CN107076096A - Internal combustion engine ignition device - Google Patents
Internal combustion engine ignition device Download PDFInfo
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- CN107076096A CN107076096A CN201480080332.3A CN201480080332A CN107076096A CN 107076096 A CN107076096 A CN 107076096A CN 201480080332 A CN201480080332 A CN 201480080332A CN 107076096 A CN107076096 A CN 107076096A
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- ignition
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- internal combustion
- combustion engine
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P3/00—Other installations
- F02P3/06—Other installations having capacitive energy storage
- F02P3/08—Layout of circuits
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
Abstract
The present invention provides a kind of internal combustion engine ignition device for the startability for improving engine, is provided with the internal combustion engine ignition device：Primary current test section, is detected to the primary current of ignition coil；By the detected value of primary current reach threshold value timing detection on the basis of timing unit；Switch drive unit, the state making the current control switch that the primary current progress on or off to ignition coil is controlled after the start-up operation of engine starts when the power supply of microcomputer is established or when detecting benchmark timing for that can connect；And ignition control unit when starting, the timing of ignition timing when can act as the startup of engine according to the waveforms detection of primary current in the startup of engine makes current control be off state with switch in the timing detected, thus, carries out ignition operation.
Description
Technical field
The present invention relates to the internal combustion engine ignition device of failure of current type.
Background technology
As the internal combustion engine ignition device of failure of current type, as shown in patent document 1 or patent document 2, by magnetic
Motor（Flywheel magneto）Non-transformer as priming supply（batteryless）Igniter be widely adopted, the magnetic
Motor is made up of the magnet rotor of 3 pole magnetic field of magnets the periphery mounting permanent magnet of the flywheel in the crank axle for being installed on engine
And the stator for winding ignition coil on the iron core with a pair of opposite magnetic pole pieces of the magnetic pole with magnet rotor and constituting is constituted.
In the magneto for the igniter of the species, the primary winding of ignition coil also serves as the hair of priming supply
Electric coil, only the once alternating voltage with following waveform is sensed during crank axle rotates 1 week in primary winding：With one
First half-wave of individual polarity, with another polarity and wave height value than the second half-wave of the first half wave height and with a pole
Property and occur successively with the 3rd half-wave of the wave height value equal with the first half-wave.First to the 3rd sensed in primary winding
Among half-wave voltage, the main half-wave of wave height value highest is the second half-wave, and second half-wave voltage is in order to obtain ignition energy
And use.
It is connected in parallel at the two ends of the primary winding of the ignition coil for the stator for being arranged at magneto by IGBT or bipolar
The current control switch that the thyristor that transistor npn npn etc. can carry out on or off control is constituted, passes through the electric current
Control is switched and magneto constitutes firing circuit.In addition, being provided with IGNITION CONTROL portion, the IGNITION CONTROL portion is made by control
Current control controls the point of internal combustion engine with switch in the timing that the ignition timing of engine becomes an OFF state from on-state
In fiery period, the internal combustion engine ignition device of failure of current type is made up of the IGNITION CONTROL portion and above-mentioned firing circuit.
In the igniter shown in patent document 1, current control is made up of with switch NPN transistor, in ignition coil
Primary winding in when sensing the second half-wave voltage, the current potential of the colelctor electrode of the transistor, should relative to transmitting extremely positive potential
Circuit in parallel is connected to the two ends of the primary winding of ignition coil between the collector emitter of transistor.In addition, the collection of transistor
Connected between electrode and base stage by bias with resistance, the second half-wave voltage sensed in the primary winding of ignition coil reaches
Defined level and the base current of defined size are from the colelctor electrode side of transistor by bias resistance to transistor flow
When（When providing the drive signal for being used for making transistor be conducting state）, transistor is conducting state.
In the igniter shown in patent document 1, base stage, transmitting also in the transistor for constituting current control switch
Interpolar is connected with thyristor（thyristor）, make the thyristor to connect shape in the ignition timing of internal combustion engine
State, thus, makes to be that the transistor of conducting state is cut-off state before that.When make transistor be cut-off state when, cut-out from
The primary current flowed between the collector emitter that the primary winding of ignition coil passes through transistor, therefore, in ignition coil
Primary winding in sensing want to make the primary current flowed before that to continue the high voltage in direction flowed, the voltage root
According to ignition coil once with it is secondary between step-up ratio and boost to the high voltage of igniting.In the secondary coil of ignition coil
The high voltage of the igniting of middle sensing is applied to the spark plug for the cylinder for being installed on internal combustion engine, therefore, in putting for the spark plug
Spark discharge is produced in electric gap and carrys out igniter motor.
As described above, in the igniter of failure of current type, connect the primary winding parallel connection relative to ignition coil
The current control connect is become an OFF state with switch from on-state, thus, the inductive ignition in the secondary coil of ignition coil
High voltage carries out ignition operation, therefore, by setting to making current control be changed into turning off shape from on-state with switch
The IGNITION CONTROL portion that the timing of state is controlled, so as to control the ignition timing of engine.
In the igniter shown in patent document 1, microcomputer is provided with order to constitute IGNITION CONTROL portion, in order to
The rotation information of supply voltage and engine is provided to the microcomputer, the primary side of ignition coil is provided with firing line
Circle.Trigger winding is set to sensing and the voltage of primary winding same phase, and the induced voltage is input into power circuit and week
In phase signal generation portion.Current circuit will sense the first half-wave voltage and the 3rd half-wave voltage in the primary winding of ignition coil
When the voltage transformation that senses in the trigger coil for fixed DC voltage, the power supply terminal to microcomputer and week by the DC voltage
Phase signal generator is provided.Periodic signal generating unit to the voltage sensed in the primary winding of ignition coil by carrying out waveform
Shaping, thus by the rising of each of the first half-wave voltage and the second half-wave voltage by sensing in primary winding and under
The signal that the rectangle of drop generation level change is wavy is produced as periodic signal, and the periodic signal is believed to the interruption of microcomputer
Number input terminal is provided.Microcomputer is according to generation cycle of periodic signal（Crank axle rotate 1 week required for time）Inspection
Survey the rotary speed of internal combustion engine, for the ignition timing of the rotary speed computing engine detected, the computing detecting
During ignition timing, it is pass to be connected to constitute current control with the thyristor of the base emitter interpolar of the transistor of switch
Disconnected state carries out ignition operation.
In the igniter shown in patent document 2, trigger winding is omitted, is sensed in the primary winding of ignition coil
Voltage is input into power circuit and periodic signal generating unit.Supply voltage will sense in the primary winding of ignition coil
First half-wave voltage and the 3rd half-wave voltage are transformed to fixed DC voltage and provide supply voltage to microcomputer.This
Outside, periodic signal generating unit will carry out the wavy periodic signal of the rectangle after waveform shaping to the voltage sensed in primary winding
There is provided to the interrupt signal input terminal of microcomputer.
In the igniter shown in patent document 2, also by circuit between collector emitter and ignition coil once
The transistor of coils from parallel connection of coils connection constitutes current control switch, is connected with the base emitter interpolar of the transistor for making this
Transistor is the thyristor of cut-off state.In addition, being connected between the colelctor electrode and base stage of transistor via bias with resistance
Connect, when the second half-wave voltage sensed in the primary winding of ignition coil reaches specified level, from the colelctor electrode side of transistor
Make transistor be conducting state to base current as defined in base stage flowing, make crystalline substance when making thyristor be on-state
Body pipe is cut-off state to carry out ignition operation.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2009-156203 publications；
Patent document 2：Japanese Unexamined Patent Publication 2010-180854 publications.
The content of the invention
The invention problem to be solved
In the internal combustion engine ignition device of the conventional failure of current type shown in patent document 1 or patent document 2, both starting
During the startup of machine also usual operating after start completion when, entered using the voltage to sensing in the primary winding of ignition coil
Periodic signal obtained from row waveform shaping is directed to the ignition timing of the rotary speed computing engine of the engine detected,
The ignition timing of institute's computing makes current control be off state with switch, thus, ignition operation is carried out, therefore, in engine
After start-up operation starts, it is impossible to carry out ignition operation until microcomputer starts and be changed into being capable of detecting when the rotation of engine
The state of speed.
In order to go out the rotary speed of engine according to the generation cycle detection of periodic signal, it is necessary to which crank axle rotates 1 week.Cause
This, is not to rotate crank axle after the start-up operation of engine is started in the case of using conventional igniter
Initial igniting can not be carried out after more than 1 week, exist loss engine startability it is such the problem of.
In the igniter of failure of current type, it is desirable to be able to larger electricity is flowed in the primary winding of ignition coil
Stream, accordingly, it would be desirable to make the number of turn of primary winding few.Therefore, when crank rotation rotary speed upon start up is low, it is difficult to make one
Among first sensed in secondary coil to the 3rd half-wave voltage in order to microcomputer provide supply voltage and use first
The wave height value of half-wave voltage and the 3rd half-wave voltage reaches the level needed to the power supply in order to ensure microcomputer, it is difficult to
Microcomputer is remained into working condition.Therefore, the primary winding in ignition coil is passed through in the case where not loading battery
The voltage of middle sensing makes microcomputer work and be lighted a fire by the failure of current type of the Microcomputer control ignition timing
In the case of the crank velocity of rotation reduction of device on startup, it is impossible to carry out ignition operation, exist in the startup of engine
The problem of failure is such.
Especially, the starter that rebounds is being used（recoil starter）Or Recoil starter（kick starter）Like that
By inputting the starter that is operated come in the case of starting engine, the song after the start-up operation of engine is started
Arbor is difficult to persistently provide in order that miniature calculating from the primary winding of ignition coil to power circuit during rotating more than 1 week
Machine works and voltage more than required voltage value, therefore, in the case of using conventional igniter, it is impossible to avoid in hair
The probability failed in the startup of motivation is high.
Further, being also contemplated for also setting according to ignition coil in addition in addition to the IGNITION CONTROL portion for having used microcomputer
The voltage detecting at two ends of primary winding go out the timing that light a fire to make the circuit that current control switch is off state,
But, in the case of using the structure that such circuit is also set up in addition to microcomputer, the structure of igniter becomes
Obtain complicated, therefore, not preferably.
It is an object of the invention to provide not sluggish after the supply voltage of microcomputer is established can carry out most
First ignition operation and also can be easy in the case of engine is started using the starter by manual operation
Ground carries out the internal combustion engine ignition device of the failure of current type of the startup of engine.
Scheme for solving problem
The present invention is using a kind of internal combustion engine ignition device as object, and the internal combustion engine ignition device possesses：Firing circuit, tool
The standby stator in the magneto for being installed on internal combustion engine is provided with primary winding and secondary coil and in the crank of the internal combustion engine
Axle rotate 1 week during only sense in primary winding once with negative polarity the first half-wave and positive polarity the second half-wave and
The ignition coil of the alternating voltage for the waveform that 3rd half-wave of negative polarity occurs successively and relative to the ignition coil once
Coils from parallel connection of coils connection current control switch, make the current control with switch become an OFF state from on-state when
The high voltage of inductive ignition carries out ignition operation in the secondary coil of the ignition coil；And IGNITION CONTROL portion, to institute
Current control is stated to be controlled to carry out the firing circuit timing of ignition operation with the on or off of switch（During igniting
Phase）It is controlled.
As shown below first is at least disclosed to the tenth invention in order to reach above-mentioned purpose in the present invention.
First invention
In the first invention disclosed in this specification, it is provided with：Primary current test section, to the primary line by ignition coil
The primary current for enclosing and flowing is detected；Microcomputer, uses the primary current detected by the primary current test section
The processing that is needed to carry out in order to constitute the IGNITION CONTROL portion of information；And power circuit, will be in the ignition coil
Primary winding in the first half-wave voltage for sensing and the 3rd half-wave voltage be transformed to DC voltage and by the DC voltage to institute
State microcomputer and provide and be used as supply voltage.
In addition, above-mentioned IGNITION CONTROL portion possesses：Switch drive unit, before sensing the second half-wave voltage in primary winding
During provide drive signal with switch to make current control switch be the state that can connect to current control；Benchmark is determined
When detection unit, by the primary current detected by primary current test section reach threshold value timing detection on the basis of timing；Start
When ignition control unit, be possible in the startup of internal combustion engine according to the waveform of the primary current detected by primary current test section
As internal combustion engine startup when ignition timing timing ask for for start when ignition timing, when being lighted a fire when seeking out the startup
Make current control during the phase at once with switch is off state to make firing circuit carry out ignition operation；And IGNITION CONTROL when generally
Unit, is directed to after the start completion of internal combustion engine according to the rotation for detecting the internal combustion engine that the cycle of benchmark timing obtains
The ignition timing of velocity information computing internal combustion engine, makes current control be shut-off with switch detecting during the ignition timing of computing
State, thus, makes firing circuit carry out ignition operation.
As described above, when be provided with the second half-wave voltage is sensed in primary winding before during used to current control
When switch provides drive signal switch the current control for the switch drive unit for the state that can be connected, in engine
Startup when can be not accompanied by the feelings of larger delay when sensing the second half-wave voltage in the primary winding of ignition coil
Current control is set to flow primary current with switch for on-state under condition.In addition, as described above, when being provided with internal combustion engine
Startup when point when being possible to the startup as internal combustion engine according to the waveform of the primary current detected by primary current test section
The timing in fiery period is asked for ignition timing and making current control at once during ignition timing when seeking out the startup when starting
When with switch being startup of the off state to carry out ignition operation during ignition control unit, in the startup of engine, without etc.
Treat that crank axle rotates 1 week rotary speed to detect engine, can be after microcomputer startup initially in primary line
The second half-wave is sensed in circle（The half-wave of positive polarity）Initial igniting is carried out during voltage.Therefore, the startup behaviour of engine is being started
After work, it promptly can carry out the initial explosion of engine to start engine, even if as by inputting startup engine
Situation in the case where being difficult to carry out the crank rotation of engine with sufficient speed, also can easily carry out engine like that
Startup.
In the igniter of failure of current type, current value when cutting off the primary current of ignition coil is bigger, then produces
Bigger ignition energy.In the present invention, the size with ignition energy in the startup of engine pair has the one of direct relation
The waveform of primary current is monitored, thus, determines ignition timing, therefore, by the initial ignition timing during startup of engine
Be defined as can as start when ignition timing timing and also the timing of sufficient ignition energy can be obtained, can be accurate
Ground carries out the initial explosion of engine, and the startup of engine can be made easy.
In addition, in above-mentioned first invention, being provided with the IGNITION CONTROL portion being made up of microcomputer by ignition lead
The primary current of circle reach threshold value timing detection on the basis of timing benchmark timing detection unit, according to by the benchmark timing examine
Survey unit and detect that the cycle of benchmark timing obtains the rotating speed data of engine, therefore, there is no need to set generation to carry in addition
For the circuit of the crank signal of the information of the crankangle of engine.Therefore, according to the first invention, except by ignition coil and electric current
Outside firing circuit of the control with switch composition, as long as setting primary current test section, constituting the miniature calculating in IGNITION CONTROL portion
Machine and the power circuit that supply voltage is provided to the microcomputer, then can constitute igniter, igniting can be sought to fill
The simplification for the structure put.
Second invention
In the second invention disclosed in this specification, it is provided with：Primary current test section, to the primary line by ignition coil
The primary current for enclosing and flowing is detected；Crank signal generating unit, bag is generated using the voltage sensed in primary winding
The crank signal of crank angle information containing internal combustion engine；Microcomputer, uses the primary current detected by primary current test section
Information and the processing that is needed to carry out in order to constitute IGNITION CONTROL portion of the crank angle information that is provided using crank signal；And
Power circuit, direct current is transformed to by the first half-wave voltage sensed in the primary winding of ignition coil and the 3rd half-wave voltage
Press and provide the DC voltage to microcomputer and be used as supply voltage.
In the second invention, above-mentioned IGNITION CONTROL portion possesses：Switch drive unit, senses the second half-wave in primary winding
The shape that drive signal is provided with switch to make current control switch for that can connect to current control during before voltage
State；Ignition control unit during startup, in the startup of internal combustion engine according to the ripple of the primary current detected by primary current test section
Ignition timing during to start is asked in the timing of ignition timing when shape is possible to the startup as internal combustion engine, is seeking out the startup
When ignition timing when make current control at once with switch is off state to carry out ignition operation；And IGNITION CONTROL list when generally
Member, is directed to the rotary speed of the internal combustion engine obtained according to the generation interval of crank signal after the start completion of internal combustion engine
Information determines the ignition timing of internal combustion engine, and it is shut-off shape with switch that current control is made when detecting determined ignition timing
State, thus, makes firing circuit carry out ignition operation.
In the case where constituting like this, in the same manner as the situation using the first invention, starting the startup behaviour of engine
After work, it promptly can carry out the initial explosion of engine to start engine, even if starting the feelings of engine by inputting
Under condition, the startup of engine also can be easily carried out.In addition, pair there is the once electric of direct relation with the size of ignition energy
The waveform of stream is monitored, thus, determines the ignition timing during startup of engine, therefore, by during the startup of engine most
First ignition timing is defined as reliably obtaining the period of sufficient ignition energy, can reliably carry out the first quick-fried of engine
It is fried.
3rd invention
3rd invention is applied to the first invention or the second invention, in the present invention, the first half-wave electricity that primary winding is sensed
Pressure and the 3rd half-wave voltage are transformed to DC voltage and provide the DC voltage to the microcomputer be used as power supply
The mode of voltage constitutes the power circuit.
4th invention
4th invention is applied to the first invention or the second invention, in the present invention, ignition coil possess interpole coil in primary side,
The interpole coil is connected in series relative to primary winding and sensed and the voltage same phase that senses in the primary winding
Voltage.In this case, power circuit be configured to by when sensing the first half-wave voltage in institute's primary winding in interpole coil
The voltage of the sensing and voltage transformation that senses in interpole coil is direct current when three half-wave voltages is sensed in primary winding
Pressure.
5th invention
5th invention is applied to the first invention or the second invention, in the present invention, one will detected by primary current test section
The ignition control unit when mode that ignition timing during for the startup is asked in the timing of primary current to peaking constitutes startup.
6th invention
6th invention is applied to the first invention or the second invention, in the present invention, one will detected by primary current test section
The mode of ignition timing is constituted when timing of the primary current when being reduced to set level after more than peak value is asked for start
Ignition control unit during startup.
7th invention
7th invention is applied to the first invention or the second invention, and in the present invention, IGNITION CONTROL portion is configured to：Starting internal combustion engine
Start-up operation after the number of times of ignition operation that carries out reach before set number of times during by starting time point fire control
Unit processed controls ignition timing, and the number of times of the ignition operation carried out after the start-up operation of internal combustion engine is started reaches set
After number of times by it is usual when ignition control unit control ignition timing.
8th invention
8th invention be applied to the second invention, in the present invention, crank signal generating unit be configured to by ignition coil once
Timing or alternating current that the alternating voltage sensed in coil starts as input in the first half-wave of the waveform of the alternating voltage
The waveform of pressure shifts from the first half-wave and produces crank signal for the timing of the second half-wave.
9th invention
9th invention is applied to the second invention.In the present invention, ignition coil possesses interpole coil, the additional wire in primary side
Circle is connected in series relative to primary winding and senses the voltage of the voltage same phase with sensing in the primary winding.In the feelings
Under condition, crank signal generating unit be configured in interpole coil will to sense voltage senses as input in primary winding
The first half-wave timing started of the waveform of alternating voltage or the waveform of the alternating voltage sensed in primary winding are from the first half
Ripple transfer produces crank signal for the timing of the second half-wave.
Tenth invention
Tenth invention is applied to the first invention or the second invention, in the present invention, in order to prevent in cut-out ignition coil once
The voltage sensed during electric current in the secondary coil of ignition coil turns into excessive, is provided with primary induction voltage limiting unit, institute
State the electricity that primary induction voltage limiting unit will sense when cutting off current control switch in the primary winding of ignition coil
Pressure is limited to below set level.
Invention effect
In accordance with the invention it is possible to after in the startup of engine, microcomputer is started, initially feel in primary winding
Initial igniting is carried out when answering the half-wave voltage of positive polarity.Therefore, after the start-up operation of engine is started, without waiting for song
Arbor rotates 1 week, and can promptly carry out the initial explosion of engine makes engine start, is sent out even in such as being started by manpower
The situation of motivation is difficult in the case of being rotated with the crank that sufficient speed carries out engine like that, also can easily be sent out
The startup of motivation.
In addition, according to the present invention, the waveform according to the size with ignition energy with the primary current of direct relation is asked for
The ignition timing during startup of engine, therefore, when starting engine, ignition timing is defined as to obtain sufficient ignition energy
The period of amount, it is possible to increase the startability of engine.
Especially, the invention according to described in claim 1, is set in the IGNITION CONTROL portion being made up of microcomputer
The primary current of ignition coil is reached to the benchmark timing detection unit of timing on the basis of the timing detection of threshold value, according to detecting
The cycle of benchmark timing, ignition timing when obtaining the usual operating after the start completion for computing engine and the hair needed
The rotating speed data of motivation, therefore, eliminates the hardware electricity for the signal for producing the rotating speed data for being used to obtain engine
Road, can seek the simplification of the structure of igniter.
Brief description of the drawings
Fig. 1 is the block diagram for the structure for showing an embodiment of the invention.
Fig. 2 is to make the part of ignition coil for section to show the magneto used in the embodiment shown in Fig. 1
（magneto）Major part construction an example front elevation.
Fig. 3 is the circuit diagram of the configuration example for the hardware for showing the embodiment shown in Fig. 1.
Fig. 4 is the block diagram for the structure for showing another embodiment of the present invention.
Fig. 5 is the circuit diagram of the configuration example for the hardware for showing the embodiment shown in Fig. 4.
Fig. 6 is the block diagram for the structure for showing another embodiment of the present invention.
Fig. 7 is the circuit diagram of the configuration example for the hardware for showing the embodiment shown in Fig. 6.
Fig. 8 is the block diagram for the structure for showing another embodiment of the present invention.
Fig. 9 is the circuit diagram of the configuration example for the hardware for showing the embodiment shown in Fig. 8.
Figure 10 be each portion for schematically showing the embodiment shown in the embodiment and Fig. 4 shown in Fig. 1 voltage,
The time diagram of current waveform.
Figure 11 be each portion for schematically showing the embodiment shown in the embodiment and Fig. 8 shown in Fig. 6 voltage,
The time diagram of current waveform.
Figure 12 is the main program for showing the processing that microcomputer is performed in the embodiments of the present invention（main
routine）Algorithm an example flow chart.
Figure 13 is an example of the algorithm for showing the memory initialization process carried out in the main program shown in Figure 12
The flow chart of son.
Figure 14 is shown in each embodiment in engine（engine）Startup when perform startup A/D processing
The flow chart of one example of algorithm.
Figure 15 is shown in Fig. 1 embodiment and Fig. 4 embodiment whenever benchmark timing detection unit is detected
Go out the flow chart of an example of the algorithm of the benchmark Interruption processing performed during benchmark timing.
Figure 16 is shown in Fig. 1 embodiment and Fig. 4 embodiment when set by timer X is measured
Between when the flow chart of the algorithm of processing that performs.
Figure 17 is performed when being and showing the measurement for completing the set time in firing timer in each embodiment
The flow chart of the algorithm of processing.
Figure 18 is shown in the embodiment shown in the embodiment and Fig. 8 shown in Fig. 6 in the first half-wave（half-
wave）Voltage generation when to microcomputer interrupting input terminal input crank signal（crank signal）Shi Zhihang
Processing algorithm flow chart.
Embodiment
Embodiments of the present invention are described in detail with reference to the following drawings.The present invention can be applied to rush to 2
Journey internal combustion engine（two-stroke internal combustion engine）The igniter lighted a fire, can also be applied
In to 4 strokes（four-stroke internal combustion engine）The igniter that internal combustion engine is lighted a fire, but
It is, in embodiment as shown below, it is assumed that the internal combustion engine lighted a fire is 4 Stroke Engines.
[first embodiment]
Fig. 1 is the block diagram for the structure for showing the first embodiment of the present invention, in the figure, and 1 is (not shown) interior to be installed on
The magneto of combustion engine.Magneto 1 has 3 pole magnet rotors of the crank axle for being installed on internal combustion engine（magnet rotor）, Yi Ji
Ignition coil IG primary winding Wp and secondary coil Ws is wound on iron core with the magnetic pole piece opposite with the magnetic pole of magnet rotor
And the stator constituted, such as Figure 10（B）And Figure 11（B）Schematically show like that, during the crank axle of internal combustion engine rotates 1 week
Only sensing in primary winding Wp once has the first half-wave voltage V1, the second half-wave voltage V2 and the 3rd half-wave voltage V3
The alternating voltage of the waveform occurred successively.
Among the first to the 3rd half-wave voltage sensed in the primary winding Wp of ignition coil, the first half-wave voltage V1 and
3rd half-wave voltage V3 is voltage of the wave height value than relatively low negative polarity, and the second half-wave voltage V2 is wave height value than the first half-wave electricity
The voltage of pressure and the high positive polarity of the 3rd half-wave voltage.In the igniter of failure of current type, in order to obtain ignition energy and
Use the second high half-wave voltage V2 of wave height value.
When reference picture 2, the major part of the configuration example of magneto 1 is shown.Magneto 1 shown in Fig. 2 is by being installed on
The crank axle of engine（It is not shown.）Magnet rotor 1a and the shell relative to engine（It is not shown.）Fixed stator 1b structures
Into.Magnet rotor 1a is by being installed on the flywheel of the cup-shaped of the crank axle of engine（flywheel）101 and be fixed on be formed at it is winged
The permanent magnet 103 of radially magnetized arcuation in the recess 102 of the periphery of wheel and in flywheel is constituted.In the magnet rotor of diagram
In, pass through the magnetic pole of the outer circumferential side of permanent magnet 103（It is N poles in the example in the figures）With to the both sides positioned at recess 102
The magnetic pole of the inner circumferential side of permanent magnet derived from the outer peripheral face of flywheel（It is S poles in the example in the figures）Constituting has in flywheel
3 magnetic poles arranged in circumference（3 poles）Magnetic field of magnets.
Stator 1b possesses：The bar-shaped main iron core 104 that is made up of the layered product of steel plate, the long size side in main iron core 104
To one end and the other end possess a pair of yokes that rearward end is fixed respectively（yoke）105 and 106 U-shaped iron core 107, with
And the ignition coil IG wound on main iron core 104.The magnetic pole strength with cylinder planar is formed with the top of yoke 105,106
Magnetic pole piece 108 and 109, make the outer peripheral face of these magnetic pole pieces and magnet rotor opposite via gap.
Ignition coil IG, which possesses, is being fixed on a reel of iron core principal part 104（bobbin）Wound once on 110
The coil Wp and secondary coil Ws wound on secondary reel 111, the insertion of secondary reel 111 that volume has secondary coil is installed
In primary winding Wp periphery.It is configured with order to being flowed in the primary winding Wp of ignition coil on the outside of secondary coil Ws
The igniting unit 113 that the element that dynamic electric current is controlled and needed is assemblied in printed base plate 112 and constituted, via conductor 114
Connect between igniting unit 113 and primary winding Wp.Ignition coil IG and igniting unit 113 are inserted into resinous shell
In 115, cast into shell 115（casting）Thermosetting insulating resin, thus, casting（mold）Ignition coil IG and
Igniting unit 113.High-voltage line is exported from the secondary coil Ws of ignition coil ungrounded side terminal（high-tension cord）
116, the high voltage of the igniting sensed in secondary coil Ws by spark from high-voltage line 116 to the cylinder for being installed on engine
Plug supply.
In the example in the figures, by ignition coil IG, igniting unit 113 and house their shell 115 and constitute electricity
Flow the internal combustion engine ignition device IU of cut-out type.In igniter IU, make the magnetic pole piece 108,109 of iron core 107 via rule
Fixed gap and be formed with the outer peripheral face of the magnetic pole of magnet rotor it is opposite in the state of configure, ignition lead is respectively formed in by insertion
Mounting hole h1 and the h2 screw of the yoke 105 and 106 of IG iron core 107 are enclosed by iron core 107 and the shell for being arranged on engine etc.
Stator installation portion link, thus, the shell relative to internal combustion engine is fixed.
When the crank axle of internal combustion engine rotated and Fig. 2 shown in the magnet rotor 1a of magneto 1 rotated when turn in magnetic
During the position of the magnetic pole piece 108 and 109 for the iron core 107 that this 3 magnetic poles of the SNS in sub- 1a magnetic field pass through stator, such as Figure 10（A）With
Figure 11（A）The shown magnetic flux like that, flowed in iron core 107 carries out alternation, by the change of the magnetic flux, in ignition lead
Such as Figure 10 in the primary winding Wp of circle（B）And Figure 11（B）It is shown it is such sense the first half-wave voltage V1, the second half-wave voltage V2 and
The alternating voltage for the waveform that 3rd half-wave voltage V3 occurs successively.Also felt in secondary coil Ws by the alternation of magnetic flux
Alternating voltage is answered, still, the electricity that senses before the primary current flowed in primary winding Wp in secondary coil Ws is being breaking at
Pressure not up to produces the voltage of spark discharge in spark plug, therefore, will not carry out ignition operation by the secondary voltage.
As shown in Figure 1, current control switch 2 is connected in parallel in the primary winding Wp relative to ignition coil IG,
Firing circuit 3 is constituted with switch 2 by ignition coil IG and current control.Current control is with switch 2 by insulated gate transistor
（IGBT）, bipolar transistor, field-effect transistor（MOSFET）Free semiconductor switch is controlled to constitute etc. on or off,
It is on-state during the second half-wave voltage that positive polarity is sensed in the primary winding Wp of ignition coil.
When it is on-state current control is switched 2, primary current I1 is used from primary winding Wp by current control
Switch 2 flows.In the ignition timing of internal combustion engine it is pass using IGNITION CONTROL portion 10 described later on current control switch 2
Disconnected state.When it is off state current control is switched 2, one flowed before that is wanted in sensing in primary winding Wp
Primary current I1 continues the high voltage of polarity flowed.The voltage according to ignition coil once, the step-up ratio of secondary and boost,
Therefore, the high voltage of 20 ~ 30 [kV] igniting is sensed in the secondary coil Ws of ignition coil.Sense in secondary coil Ws
High voltage be applied to the spark plug 4 of the cylinder for being installed on internal combustion engine, therefore, fire is produced in the discharging gap of spark plug 4
Flower electric discharge, lights a fire to engine.
In the present invention, it is provided with microcomputer to constitute IGNITION CONTROL portion 10（It is not shown in Fig. 1.）.It is micro-
Type computer is performed for being used for the ignition timing to internal combustion engine（Current control is set to be changed into closing from on-state with switch 2
The timing of disconnected state）The program for the processing being controlled.In order that microcomputer work is, it is necessary to the electricity of the microcomputer
Source terminal, which is provided, has defined magnitude of voltage（Usually 5 [V]）DC voltage Vcc.
In the internal combustion engine ignition device of the present invention, according to the first half sensed in the primary winding Wp of ignition coil
Wave voltage V1 and the 3rd half-wave voltage V3 are obtained for the microcomputer for constituting IGNITION CONTROL portion 10 to be maintained into working condition
Dc source.Therefore, in the present embodiment, it is provided with the first half-wave voltage V1 that will be sensed in primary winding Wp and
Three half-wave voltage V3 are transformed to fixation（Usually 5 [V]）DC voltage Vcc and by DC voltage Vcc to miniature calculating
The power circuit 5 that the power supply terminal of machine is provided.Power circuit 5 for example can partly be constituted by as follows：Using in primary winding Wp
First half-wave voltage V1 of the negative polarity of middle sensing and the 3rd half-wave voltage V3 be charged to fixed voltage the first capacitor, with
And make the electric charge transfer being accumulated in first capacitor into the second capacitor and make in the two ends generation of second capacitor
The pumping of the DC voltage of polarity after the voltage reversal at the two ends of the first capacitor（pumping）Circuit.
It is additionally provided with the present embodiment and the primary current I1 flowed by current control with switch 2 is detected
And the primary current test section 6 for providing the information of the primary current detected to the A/D input terminals of microcomputer.This one
Primary current test section 6 can be for example made up of current limiting element, and the current limiting element is so that what primary current I1 flowed
Mode is connected in series with 2 and primary winding Wp of switch relative to current control and produced when primary current I1 flows at two ends
The raw voltage drop proportional to the current value of the primary current.It is used as the current limiting element for constituting primary current test section 6, energy
Enough use shunt resistance device（shunt resister）Or two for being connected in series multiple diodes in identical direction and constituting
Pole pipe array etc..It is further possible to pass through Hall（Hall）Current sensor etc. constitutes primary current test section 6.
The IGNITION CONTROL portion 10 being made up of microcomputer possesses：Switch drive unit 11, benchmark timing detection unit 12,
During startup ignition control unit 13 and generally when ignition control unit 14.These units are illustrated below.
Switch drive unit 11
To electric current during before the second half-wave voltage V2 of the switch drive unit 11 to sense positive polarity in primary winding Wp
Control that drive signal is provided and is made current control switch for the unit for the state that can be connected with switch.Microcomputer exists
Start engine start-up operation and power circuit 5 produces when starting microcomputer and required voltage, deposited
After the reset in each portion such as reservoir or timer（Carrying out electrification reset（power-on reset）Afterwards）, first, to electric current
Control provides drive signal with the control terminal of switch 2, thus, as long as applying from primary winding Wp to current control with switch 2
Second half-wave voltage, then the current control is switched is changed into on-state at once.Electrification reset is being carried out by microcomputer
Carry out constituting switch drive unit 11 to the process that current control switchs 2 processing for providing drive signal afterwards.
Benchmark timing detection unit 12
Benchmark timing detection unit 12 is the timing to the detection as the rotary speed for carrying out internal combustion engine or starts engine
The unit that the benchmark timing of the timing of the measurement of ignition timing is detected.Benchmark timing detection unit 12 such as Figure 10（D）It is shown
The primary current I1 detected by primary current test section 6 is reached to timing on the basis of threshold value Ith timing t c detections like that.It is miniature
Computer reads the information of the primary current provided from primary current test section 6 to A/D input terminals with tiny time interval, will
The primary current information read is compared with threshold value, and the primary current information read is detected as into base for timing more than threshold value
When certainly.Primary current I1 waveform and the crankangle of engine（The rotary angle position of crank axle）With fixed alternate pass
It is and changes, therefore, crank angular positions and fixed position of the said reference timing t c for engine（Benchmark crankangle position
Put）Timing when consistent.
Ignition control unit 13 during startup
Ignition control unit 13 is such as lower unit during startup：Detected in the startup of internal combustion engine according to by primary current test section 6
The timing of ignition timing when being possible to the startup as internal combustion engine of the waveform of primary current ask for ignition timing during to start,
Enter to exercise the processing that current control switch 2 is off state during ignition timing at once when seeking out startup（Except whereabouts electric current
The processing for the drive signal that control is provided with switch 2）, firing circuit is carried out ignition operation.Point when the startup of internal combustion engine
When fiery period is excessively early relative to the timing of the piston arrival top dead centre of engine, when engine is ignited, piston can not be got over
Cross top dead centre and be pushed back, therefore, the driver for not only failing in the startup of engine but also being operated to starter
Impacted, therefore, not preferably.The phenomenon that piston can not cross top dead centre and be pushed back when engine is ignited is referred to as bullet
Return（recoil）Or recoil（kickback）.
Recoil will not be produced in the startup of engine, therefore, it is possible to be used as the ignition timing during startup of internal combustion engine
Timing be relative to engine crank axle reach top dead centre when timing without excessively early position and for obtain in order to
Obtain sufficiently cutting off current value for making the energy of engine ignition（Make current control switch 2 to cut for off state
The value of primary current during disconnected primary current）Timing.Primary current I1 waveform and the crankangle of engine have fixed
White relation and change, therefore, determined when the waveform based on primary current start when ignition timing when, can hair
The crank angular position of ignition location in the startup of motivation when suitable for starting is lighted a fire.
For example, it is assumed that the stator 1b of configuration magneto, so that the rotary angle position in the crank axle of internal combustion engine is reached
The piston of engine reaches the position of top dead centre（Top dead center position）Or compared with the top dead center position somewhat in advance position when
Primary current I1 is to peaking.In this case, can as engine startup when ignition location crank angular position example
Such as it is reduced to for primary current I1 to the position of peaking or primary current I1 after more than peak value and is set as being not less than
The setting level of the minimum value for the failure of current value allowed to obtain the energy in order to be lighted a fire and be needed to engine
When crank angular position.
In the above cases, ignition control unit 13 is configured to one will detected by primary current test section 6 during startup
Ignition timing or be configured to will be detected by primary current test section 6 during to start one is asked in the timing of primary current to peaking
Ignition timing when timing of the primary current when being reduced to set level after more than peak value is asked for start.
Ignition control unit 14 when generally
Ignition control unit 14 is such as lower unit when generally：After the start completion of internal combustion engine, for according to by benchmark timing
When detection unit 12 detects that the rotating speed data for the internal combustion engine that the cycle of benchmark timing obtains carrys out the igniting of computing internal combustion engine
Phase, make current control be off state with switch during the ignition timing of computing detecting, thus, carry out firing circuit 3
Ignition operation.
In the example depicted in figure 1, ignition control unit 14 is by rotary speed arithmetic element 14A, usual time point when usual
Fiery period arithmetic element 14B, it is usual when ignition timing detection unit 14C and switch OFF unit 14D constitute.
Here, rotary speed arithmetic element 14A is such as lower unit：Whenever benchmark timing detection unit 12 detects that benchmark is determined
When（Primary current reaches the timing of threshold value）When, according to before detecting at the time of secondary standard timing to detect this secondary standard determine
When at the time of time（Crank axle rotate 1 week required for time）Carry out the rotary speed of computing engine.
In addition, ignition timing arithmetic element 14B is the rotary speed to the computing of rotary speed arithmetic element 14A institutes when usual
Under engine ignition timing carry out computing unit.Ignition timing arithmetic element is directed to by rotary speed computing when this is usual
The rotary speed retrieval of unit 14A computings provides the ignition timing computing table of rotary speed and the relation of ignition timing（Mapping
（map））, interpolation arithmetic is applied to the value retrieved, thus, the ignition timing of the engine under the rotary speed of institute's computing entered
Row computing.Rotations of the ignition timing arithmetic element 14B whenever using benchmark timing computing rotary speed for institute's computing when generally
Rotary speed computing ignition timing, makes the ignition timing of institute's computing be stored in the RAM of microcomputer.
When generally ignition timing detection unit 14C when detecting benchmark timing in order to detect with the benchmark of previous detection
The timing computing and temporal calculation for being stored in the ignition timing in RAM and measuring the ignition timer made in microcomputer is
Ignition timing time of measuring, the ignition timing time of measuring of institute's computing is arranged in ignition timer at once, the measurement is opened
Begin.When ignition timer to be completed to ignition timing detection unit 14C the measurement of set ignition timing time of measuring when generally
Timing as ignition timing, when detecting the ignition timing to switch OFF unit 14D provide switch OFF instruction.Switch
Shut-off unit 14D from it is usual when ignition timing detection unit 14C the timing of switch OFF instruction be provided enter to exercise current control
With the processing that switch 2 is off state（Except the processing for the drive signal that whereabouts current control is provided with switch 2）To make electric current control
System switch 2 is off state.
When reference picture 3, the configuration example of the hardware of internal combustion engine ignition device shown in Fig. 1 is shown.Shown in the figure
Example in, the IGBT of the primary winding Wp of ignition coil ungrounded side terminal is connected to by colelctor electrode（Insulated-gate type crystal
Pipe）T1 constitutes current control switch 2.
In addition, shunt resistance device Rs is connected between IGBT T1 emitter stage and primary winding Wp ground connection side terminal,
Primary current test section 6 is constituted by the shunt resistance device.Shunt resistance device Rs is used relative to primary winding Wp with current control
Switch 2 is connected in series, therefore, when primary current I1 is flowed from the primary winding of ignition coil by current control switch 2
When, the voltage drop proportional to primary current I1 is produced at shunt resistance device Rs two ends.The voltage at resistor Rs two ends
Signal is detected as primary current.Primary winding Wp ground connection side terminal is grounded together with secondary coil Ws ground connection side terminal.
In addition, power circuit 5 is made up of following part：Anode is connected to the diode of primary winding Wp ground connection side terminal
The first capacitor C1, the anode that D1, one end are connected to diode D1 negative electrode are connected to the other end of the capacitor and negative electrode connects
Diode D2, the anode for being connected to primary winding Wp ungrounded side terminal are connected to capacitor C1 and diode D1 tie point
Diode D3, the second capacitor C2 being connected between diode D3 negative electrode and ground connection, the two ends direction in the second capacitor C2
Ground side be connected with the Zener diode ZD of anode and the series circuit relative to diode D1 and the second capacitor C1 and simultaneously
The resistance R1 of connection ground connection.Pump is constituted by diode D1 to D3, the first and second capacitor C1 and C2 and resistance R1
（pump）Circuit, the pump circuit by make temporarily to be accumulated in electric charge transfer in the first capacitor C1 into the second capacitor come
Second capacitor C2 is charged, so as to obtain the voltage with the first capacitor C1 two ends at the second capacitor C2 two ends
The voltage of opposite polarity.
In the power circuit 5 of diagram, the first half-wave voltage V1 and the 3rd half of negative polarity is sensed in primary winding Wp
During wave voltage V3, the first capacitor C1 is charged to the polarity of diagram by diode D1 and D2.It is accumulated in the first capacitor C1
In electric charge be transferred to by diode D3 and resistance R1 in the second capacitor C2, therefore, the second capacitor C2 is charged to figure
The polarity shown.The voltage at the second capacitor C2 two ends is limited by Zener diode ZD Zener voltage.It is used as Zener diode
ZD, using with the supply voltage with microcomputer（5[V]）The diode of equal Zener voltage.
In figure 3, MCU is the microcomputer for constituting IGNITION CONTROL portion 10.Microcomputer MCU is gone back in addition to cpu
Possess the memories such as ROM or RAM, timer etc., the program in ROM is stored in by execution to constitute various functions and realizes list
Member.Microcomputer MCU, which possesses from power circuit 5, to be provided the power supply terminal of power source voltage Vcc, is carried to current control with switch
Output port A for drive signal and the A/D input ports for being transfused to analog signal, by primary current test section 6 in resistance
The primary current that device Rs two ends are obtained detects that signal is inputted to A/D input ports.
Then, reference picture 10 illustrates come the work to the internal combustion engine ignition device shown in Fig. 1.Figure 10（A）Show
The change of the magnetic flux flowed in the iron core of ignition coil, the figure（B）Show the electricity sensed in primary winding Wp
Press VL.In addition, Figure 10（C）The power source voltage Vcc provided from power circuit 5 to microcomputer is shown, the figure（D）Show
Primary current I1.And then, Figure 10（E）The timework of the ignition timer in microcomputer is shown, the figure（F）With（G）
Respectively illustrate the timework of the timer for the timing determination for making IGBT T1 be conducting state and the output port A from microcomputer
The voltage provided to IGBT grid.
When carrying out the start-up operation of internal combustion engine, the crank axle of engine is rotated, therefore, in ignition coil
The magnetic flux flowed in iron core produces Figure 10（A）Shown such change, by the magnetic flux change, in primary winding Wp
First half-wave voltage V1, the second half-wave voltage V2 and threeth half-wave voltage V3 of negative polarity of positive polarity of the sensing with negative polarity
The alternating voltage VL of the waveform occurred successively（Figure 10 B）.In Fig. 10, alternating voltage VL the first half-wave voltage V1 is produced
Moment and at the time of as zero（At the time of second half-wave voltage is produced）T1 and t2 are set to, the 3rd half-wave voltage is produced
Moment（At the time of second half-wave voltage turns into zero）T3 and t4 are set at the time of turning into zero with the 3rd half-wave voltage.
Alternating voltage VL the first half-wave voltage V1 and the 3rd half-wave voltage V3 are input into power circuit 5, therefore, electricity
Source circuit 5 provides power source voltage Vcc to microcomputer MCU（Figure 10 C）.Power source voltage Vcc is produced in the first half-wave voltage
Period is to peaking（5V）Reduced, still, risen again when the 3rd half-wave voltage V3 is produced with fixed ratio afterwards,
3rd half-wave voltage exceedes after peak value, is dropped during before next first half-wave voltage V1 is produced with fixed ratio
It is low.When the wave height value of the first half-wave voltage V1 and the 3rd half-wave voltage V2 after the start of engine are uprised and alternating voltage VL is produced
Raw interval becomes in short-term, and power source voltage Vcc is retained as the value equal with Zener diode ZD Zener voltage（5V）.
Reached after the start-up operation of engine is being carried out in moment ta power source voltage Vcc in order that microcomputer work
Make and during the minimum value Vth of required voltage, microcomputer MCU starts and carries out electrification reset.In the electricity of microcomputer
The rated value of source voltage vcc be 5 [V] in the case of, in order that microcomputer work and the minimum value Vth of required voltage is
2. 3 [V] left and right.During power source voltage Vcc keeps more than minimum value Vth value, microcomputer is maintained work shape
State.
Further, in the example shown in Figure 10, the timing of the power source voltage Vcc that power circuit 5 is exported to peaking with
First half-wave voltage of the voltage sensed in primary winding Wp is consistent with the timing of the 3rd half-wave voltage to peaking, still,
In the case where constituting power circuit 5 by pump circuit as shown in Figure 3, in the startup of engine, power source voltage Vcc is arrived
The timing of peaking with primary voltage VL the first half-wave voltage and the 3rd half-wave voltage to peaking timing compared with evening it is a little.
In the example shown in Figure 10, start and enter initialization of line storage etc. in moment ta microcomputer MCU multiple
After the work of position, such as Figure 10（G）Shown such, microcomputer is applied from output port A to IGBT T1 grid, transmitting interpolar
Plus drive signal.The magnitude of voltage of the drive signal is roughly the same with the magnitude of voltage of the power source voltage Vcc of microcomputer.Thus,
IGBT T1 are changed into the state that can be turned on（As long as then being led at once in the forward voltage that colelctor electrode, transmitting interpolar apply more than threshold value
Logical state）.Therefore, when alternating voltage VL the second half-wave voltage V2 reaches threshold value after moment t2 rises in moment tb
When, IGBT T1 are changed into conducting state, and primary current I1 starts flowing in ignition coil.
Then, microcomputer MCU is detected according to the primary current inputted from primary current test section 6 to A/D terminals and believed
Timing on the basis of tc detections at the time of number primary current I1 being reached into threshold value Ith.Benchmark timing t c is entered by microcomputer
The process of row detection constitutes benchmark timing detection unit 12.
Microcomputer is possible to as internal combustion engine always according to the waveform of the primary current detected by primary current test section 6
Startup when ignition timing timing ask for for start when ignition timing, make at once during ignition timing when seeking out the startup
Current control is switched（It is IGBT in the present embodiment）2 be off state, firing circuit is carried out ignition operation.
In the example shown in Figure 10, according to each tiny time to inputting from primary current test section 6 to A/D terminals
Primary current detection signal is sampled, and the primary current value newly sampled is compared with the primary current value sampled slightly before, by
This, ignition timing when primary current I1 is shown into the timing t d of maximum is asked for start, in the startup, ignition timing td is such as
Figure 10（G）The shown drive signal for making to provide to IGBT T1 grid from port A like that is zero.Thus, when lighting a fire on startup
Phase td, it is cut-off state to make IGBT T1, is breaking at the primary current I1 that flows in ignition coil before that to carry out a firer
Make.
Asked for by doing as described above start when ignition timing and in striked startup, ignition timing makes IGBT
The process of ignition operation is carried out for cut-off state to constitute ignition control unit 13 during startup.Ignition timing is controlled on startup
Unit 13 carries out the initial explosion of engine when carrying out ignition operation in the latter stage of the compression stroke of engine（first
explosion）To start engine.
Microcomputer is carrying out being used to determine then providing drive to IGBT also in timing on the basis of moment tc is detected
The timer X of the timework of the timing of dynamic signal（In timing（on-timing）Decision timer）As defined in middle setting
Time, such as Figure 10（F）The shown measurement for starting the time like that.When moment te timer X completes timework, from microcomputer
The port A of calculation machine provides state of the drive signal to make IGBT for that can turn on to IGBT grid.
The time measured in timer X is set in, so that the timing after primary winding Wp senses the 3rd half-wave voltage
Device completes timework.During after starting the start-up operation of engine untill the rotary speed for detecting engine,
The fixation that the time measured in timer X is set as the predicted value of the rotary speed based on crank axle when starting and set
Time.After the rotary speed of engine is detected, make timer X measure the rotary speed computing based on engine when
Between.
By providing the process of drive signal and fixed to IGBT when microcomputer starts after start-up operation starts
When device X provide the process of drive signal to constitute out from the port A of microcomputer to IGBT grid when completing timework
Close driver element 11.
As described above, before the start completion of engine during according to detected by primary current test section 6 one
Ignition timing during to start is asked in the timing of ignition timing when the waveform of primary current is possible to the startup as internal combustion engine, at this
Ignition timing carries out ignition operation during startup.Ignition timing when the startup of internal combustion engine is reached relative to the piston of engine
The timing of stop and it is excessively early when, there is a possibility that piston can not cross top dead centre and produce recoil.It is anti-in order to prevent
Punching, installs magneto within the engine, so that the second half-wave voltage of the alternating voltage sensed in primary winding is to peaking
Timing relative to piston reach top dead centre timing will not be excessively early.
After the start completion of internal combustion engine, by it is usual when ignition control unit 14 control ignition timing.Usual time point
Fiery control unit is whenever benchmark timing t c is detected by rotary speed arithmetic element 14A according to detecting benchmark timing t c's
Cycle（Crank axle rotate 1 week required for time）Carry out the rotary speed of computing internal combustion engine, by it is usual when ignition timing computing
Unit 14B for institute's computing rotary speed computing internal combustion engine it is usual when ignition timing, store the ignition timing of institute's computing
In memory.In addition, when detecting benchmark timing t c, ignition timing detection unit 14C is read using previous when usual
Benchmark timing computing and store it is usual when ignition timing, in order to it is read-out usual when ignition timing detected and computing
The time measured in ignition timer（Ignition timing time of measuring）, the ignition timing time of measuring of institute's computing is arranged on a little
Start the measurement in fiery timer.Ignition timing detection unit 14C is when firing timer completes timework when generally
（When detecting usual during ignition timing）Switch OFF instruction is provided to switch OFF unit 14D, stops the driving to IGBT
The supply of signal.Thus, make IGBT for cut-off state to carry out ignition operation.
The detection of the start completion situation of internal combustion engine can for example sent out according to after the start-up operation of internal combustion engine is started
The regular ignition timing of motivation（During igniting in the latter stage of 1 second compression stroke carried out during crank axle rotates 2 weeks
Phase）The number of times of the ignition operation of progress reaches set number of times（At least more than 1 time）Situation carry out.The energy of IGNITION CONTROL portion 10
Enough it is configured to：Before the igniting after starting the start-up operation of internal combustion engine in the regular ignition timing of progress setting number of times
Ignition control unit 13 controls ignition timing when period is by starting, in regular point after the start-up operation of internal combustion engine is started
The number of times of the igniting carried out in fiery period reach after set number of times by it is usual when the control of ignition control unit 14 light a fire
Period.In the present embodiment, in order that explanation is simple, in regular ignition timing after the start-up operation of engine is started
Interior progress completes the startup of engine when once lighting a fire.
For the latter stage of 1 second compression stroke carried out during crank axle rotates 2 weeks（Also top dead centre is exceeded comprising piston
Fixation later interval）The ignition operation of progress rotates engine, and 4 stroke IC engines effectively work, still, at this
In embodiment, ignition operation is carried out when rotating 1 week crank axle.Therefore, also carried out a little even in the latter stage of exhaust stroke
Firer makees, and still, work of the ignition operation carried out in exhaust stroke to engine is not impacted.
In the present embodiment, flow chart is shown into Figure 17 in Figure 12, the flow chart shows to constitute a little
Fiery control unit 10 and make microcomputer perform program algorithm.Figure 12 shows the calculation for the main program that microcomputer is performed
One example of method.In the case of according to the algorithm, first, microcomputer electrification reset is made in step S101, in step
The memory initialization process shown in Figure 13 is carried out in rapid S102.
In the memory initialization process shown in Figure 13, the timing timing in measurement elapsed time is made in step s 201
Device starts, the count value and mark of each timer beyond timing timer in step S202 in reset microcomputer
Will.Then, after the initialization of the memory needed in step S203, used in step S204 to composition current control
It is the state that can be connected that the IGBT T1 of switch grid, transmitting interpolar, which provides drive signal to make current control switch,
Main program is returned in step S205.
When terminating memory initialization process and return to Figure 12 main program, remove in step s 103（clear）
The supervision timer set in microcomputer（watchdog timer）, whether the startup of judgement engine in step S104
Terminate（Whether setting starts end mark）.It is determined as that the startup of engine does not terminate in step S104（It is not provided with starting knot
Bundle flag）When, step S105 is proceeded to carry out the startup A/D processing shown in Figure 14.
In A/D processing is started, in step S301, judge that the A/D from primary current test section 6 to microcomputer is defeated
Whether the detected value of the primary current of inbound port input exceedes peak value, in situation of the detected value not less than peak value of primary current
Under, wait more than peak value.When being determined as that the detected value of primary current exceedes peak value in step S301, step S302 is proceeded to,
Make the drive signal of the grid offer to IGBT T1 makes IGBT be cut-off state for zero, is set in step S303 and starts knot
Bundle flag.After startup end mark is set, main program is returned in step s 304.
Returned to from startup A/D processing after main program, supervision timer is removed in step s 103, in step S104
Determine whether to be provided with startup end mark.Now, it is judged to being provided with startup end mark, therefore, proceeds to step S106
To determine whether to set computing opening flag.As a result, being returned in the case where being judged to being not provided with computing opening flag
Step S103.It is determined as in step s 106 in the case of being provided with computing opening flag, proceeds to step S107, selects to be used for
The ignition timing operation table of the computing of ignition timing.Ignition timing operation table is the rotary speed and ignition timing for providing engine
Relation table, experimentally make provide engine various characteristics multiple tables and be stored in ROM.In step S108
The rotary speed of engine for detecting in addition retrieves ignition timing operation table, is read from table close to the rotary speed detected
Rotary speed under ignition timing, interpolation arithmetic is applied to read-out ignition timing, thus, during the igniting of computing engine
Phase.
In step S108 after computing ignition timing, in the step S109, what computing was set in ignition timer
Timer setup value（Ignition timing time of measuring）And return to step S103.The ignition timing set in ignition timer is surveyed
The amount time is the time measured during before carrying out ignition operation after detecting benchmark timing in ignition timer.
Microcomputer is also equipped with benchmark timing detection unit, and the benchmark timing detection unit judges from once electric at any time
Whether the detected value for the primary current I1 that stream test section 6 is provided reaches threshold value Ith and primary current is reached to the timing of threshold value
Timing on the basis of detection, applies to executory processing whenever benchmark timing is detected by the detection unit and interrupts, perform figure
Benchmark Interruption processing shown in 15.In managing in this place, the measured value of timing timer, computing are read in step S401
The difference of the measurement of the measured value of the timer this time read in and the timer read in when previous benchmark timing is detected, thus,
The time in the cycle of benchmark timing will be shown to detect（After secondary standard timing before detecting to detect this secondary standard timing
Time）Cycle time is measured as, time measurement is started again at timer.In addition, according to cycle time（Crank axle rotates
Time required for 1 week）The rotary speed of computing engine.
Then, it is used to ask for the time for making IGBT T1 for the timing of conducting state next time in measurement in step S402
Timer X in timer setup value is set.The timer setup value is set as the alternating voltage sensed in primary winding Wp
The 3rd half-wave V3 disappear after timer X complete that timework is such to be worth.
Then, ignition timing is set in the timer in step S403 in the microcomputer as ignition timer
After time of measuring, computing opening flag is set in step s 404, in step S405, returns to and is transferred to benchmark Interruption
The executory processing when applying interruption of processing.
Microcomputer also completes to perform the timer X shown in Figure 16 when the measurement of set time in timer X
Interrupt processing.In timer X interrupt processings, IGBT T1 are provided drive signal to make the IGBT be in step S501
The state that can be turned on, after license carries out next benchmark Interruption, returns in step S502 and is being transferred to timing
The processing performed during device X interrupt processings.
When microcomputer also completes the measurement of set ignition timing time of measuring in ignition timer（Detecting
For rotary speed during the ignition timing of computing）Perform the ignition timer interrupt processing shown in Figure 17.In the interrupt processing
In, make IGBT be cut-off state except the drive signal of whereabouts IGBT T1 offers in step s 601, thus, carry out a point firer
Make, afterwards, in step S602, return to the processing performed when being transferred to the interrupt processing.
In the case where constituting IGNITION CONTROL portion 10 by the algorithm shown in Figure 12 to Figure 17, pass through Figure 13 memory
The step S204 and Figure 16 of initialization process timer X interrupt processings constitute switch drive unit 11.In addition, passing through Figure 14
Shown startup A/D processing constitutes ignition control unit 13 when starting, and is handled and schemed by the benchmark Interruption shown in Figure 15
Ignition control unit 14 when ignition timer interrupt processing shown in 17 constitutes usual.
When usual within ignition control unit 14, rotary speed arithmetic element 14A by Figure 15 interrupt processing the step of
S401 is constituted, and ignition timing arithmetic element 14B is made up of the step S107 and S108 of Figure 12 main program when usual.In addition, logical
Ignition timing detection unit 14C is made up of the step S403 of Figure 15 interrupt processing when often, and switch OFF unit 14D is by Figure 17's
Ignition timer interrupt processing is constituted.
As embodiment described above, when be provided with the second half-wave voltage V2 is sensed in primary winding Wp before during
Drive signal is provided with switch 2 to current control to make current control switch for the switch drive list for the state that can be connected
During member 11, it can be not accompanied by when the second half-wave voltage V2 is sensed in the primary winding of ignition coil in the startup of engine
Current control is switched 2 in the case of larger delay and flow primary current for on-state, therefore, it is possible to make once
The time of electric current flowing is long, and can make can be by cut-out once among during primary winding Wp produces the second half-wave voltage
Electric current is big come ratio shared during carrying out ignition operation, the variable range of the ignition timing of engine can be obtained into wide.
In addition, embodiment described above is like that, detected when being provided with the startup in internal combustion engine according to by primary current
The timing of ignition timing when the waveform for the primary current that portion 6 is detected is possible to the startup as internal combustion engine is asked for starting time point
Fiery period and make current control during ignition timing at once when seeking out startup with switch 2 is off state to carry out a firer
During the startup of work during ignition control unit 13, in the startup of engine, rotate 1 week to detect engine without waiting for crank axle
Rotary speed, microcomputer startup after, can when initially sensing the second half-wave voltage V2 in primary winding Wp
Carry out initial igniting.Therefore, after the start-up operation of engine is started, the initial explosion of engine can promptly be carried out
Reliably to start engine, even if being difficult to be sent out with sufficient speed as starting the situation of engine by inputting
The crank of motivation is rotated（cranking）In the case of, it also can easily carry out the startup of engine.
In addition, in the above-described embodiment, in the startup of engine, 13 pairs of ignition control unit is with lighting a fire during startup
The waveform that the size of energy has the primary current of direct relation is monitored, thus, determines ignition timing, therefore, will be started
Initial ignition timing during the startup of machine be defined as can as start when ignition timing timing and also can be filled
The timing of the ignition energy divided, the initial explosion of engine can be carried out exactly.
In addition, in the above-described embodiment, being provided with the IGNITION CONTROL portion being made up of microcomputer to light a fire
The primary current of coil reach threshold value timing detection on the basis of timing benchmark timing detection unit 12, determine according to by the benchmark
When detection unit detect that the cycle of benchmark timing obtains the rotating speed data of engine, therefore, there is no need in addition set production
The circuit of the signal of the information of the raw crankangle that engine is provided.Therefore, except by ignition coil IG and current control switch 2
Outside the firing circuit 3 of composition, as long as setting primary current test section 6, constituting microcomputer, the Yi Jixiang in IGNITION CONTROL portion
The microcomputer provides the power circuit 5 of supply voltage, then can constitute igniter, can make failure of current type igniting dress
The structure put is significantly simple.
[second embodiment]
Fig. 4 shows the structure of second embodiment of the present invention.In the present embodiment, ignition coil IG possesses in primary side
Be connected in series and sense relative to primary winding Wp the voltage same phase with sensing in the primary winding voltage it is attached
Ledger line circle Wa, the voltage sensed in interpole coil Wa is input into power circuit 5.Power circuit 5 is configured to once
The voltage sensed when the first half-wave voltage V1 is sensed in coil Wp in interpole coil Wa and the sensing the 3rd in primary winding Wp
The voltage transformation sensed during half-wave voltage V3 in interpole coil Wa is DC voltage.
In the present embodiment, as shown in figure 5, primary winding Wp and interpole coil Wa point of contact and the stator of magneto
Iron core grounding, the terminal of interpole coil Wa ungrounded side is connected to the input terminal of the ungrounded side of power circuit 5.Fig. 5
Shown power circuit 5 by partly constituting as follows：Anode is connected to the diode D1 of interpole coil Wa ungrounded side terminal, connected
The capacitor C2 that is connected between diode D1 negative electrode and ground connection and towards ground side it is connected with anode at capacitor C2 two ends
Zener diode Zd, the voltage at capacitor C2 two ends is applied to microcomputer MCU power supply as power source voltage Vcc
Terminal.The igniter of other structures of the igniter of second embodiment and the first embodiment shown in Fig. 1 and Fig. 2
Structure it is identical, microcomputer MCU perform program algorithm it is identical with the algorithm shown in Figure 12 to Figure 18.
As in the present embodiment, it is connected in series and feels with primary winding Wp when the primary side in ignition coil is provided with
Should be with the interpole coil Wa of the voltage of the voltage same phase sensed in primary winding Wp and with will be in primary winding Wp
Sense the mode that the voltage transformation sensed when the first half-wave voltage and three half-wave voltages in interpole coil Wa is DC voltage
When constituting power circuit 5, the circuit inverted to voltage need not be set in power circuit 5, therefore, it is possible to make power supply electricity
Road it is simple in construction, can seek to be equipped with the printed base plate for the electronic unit for constituting power circuit 5 and IGNITION CONTROL portion 10
Miniaturization.
[the 3rd embodiment]
When reference picture 6, the structure of third embodiment of the present invention is shown.In addition, figure 11 illustrates the embodiment party
Voltage, the waveform of electric current in each portion of formula.In the present embodiment, it is omitted in what is set in the embodiment shown in Fig. 1 and Fig. 4
Benchmark timing detection unit 12, instead, sets and carries out waveform to the voltage sensed in ignition coil IG primary winding Wp
Shaping generates the crank signal generating unit 7 of the crank signal of the crank angle information comprising internal combustion engine.Crank signal generating unit institute
The crank signal of generation be alternating voltage VL the first half-wave voltage V1 sensed in primary winding produce timing, the first half
The timing of wave voltage V1 vanishing（The timing that second half-wave voltage is produced）, the 3rd half-wave voltage V3 produce timing（The second half
The timing of wave voltage V2 vanishing）Timing with the 3rd half-wave voltage V3 vanishing illustrates the ability to the level change recognized respectively
The wavy signal of rectangle, to show the timing signal corresponding with the specific crank angular position of crank axle of each level change.Cause
This, can obtain the information of the rotary angle position of crank axle according to crank signal, can be according to the spy for detecting crank signal
The cycle of fixed level change（For example, the week to detect the level change that the timing produced in the first half-wave voltage V1 is produced
Phase）Obtain the rotating speed data of engine.
In this case, microcomputer MCU use the information of primary current that is detected by primary current test section 6 and by
The crank angle information that crank signal produced by crank signal generating unit 7 is provided needs to carry out in order to constitute IGNITION CONTROL portion 10
The processing wanted.
The structure of the hardware of the igniter of present embodiment is as shown in Figure 7.In the igniter shown in Fig. 7, electricity
The flow control power supply electricity switched shown in 2, primary current test section 6, power circuit 5 and microcomputer MCU structure and Fig. 3
The structure on road 5 is identical.
Crank signal generating unit 7 shown in Fig. 7 is made up of following part：Emitter stage be grounded and colelctor electrode be connected to it is miniature
The interrupting input terminal INT of computer NPN transistor Tr, be connected to power circuit 5 capacitor C2 ungrounded side terminal
（The positive side lead-out terminal of power circuit 5）Resistance R5 between transistor Tr colelctor electrode, the electric capacity for being connected to power circuit 5
Resistance R6 between device C2 ungrounded side terminal and transistor Tr base stage, between transistor Tr base stage and ground connection towards connecing
Ground side be connected with anode diode D5, negative electrode be connected to ignition coil primary winding Wp ungrounded side end two poles
Pipe D6, one end be connected to transistor Tr base stage and the other end be connected to diode D6 anode resistance R7 and be connected to
The capacitor C7 at resistance R7 two ends.Differential circuit is constituted by resistance R7 and capacitor C7.
In Fig. 7 crank signal generating unit 7, in the primary line of ignition coil after the start-up operation of engine is started
The first half-wave voltage is sensed in circle and the output voltage of power circuit 5 when establishing, from power circuit 5 by resistance R6 to transistor
Tr provides defined base current, in addition, collector voltage is provided to transistor Tr from power circuit 5 by resistance R5, therefore,
Transistor Tr is conducting state.After the output voltage of power circuit is established, in primary winding during non-induced voltage
Also transistor Tr is remained into conducting state.In addition, producing the first half-wave of negative polarity in ignition coil IG primary winding Wp
During voltage V1 and the 3rd half-wave voltage V3, electric current is with primary winding Wp → diode D5's → be made up of resistance R7 and capacitor C7
Differential circuit → diode D6 → primary winding W1 path is flowed and produces forward drop at diode D5 two ends, by
This, transistor Tr base emitter interpolar voltage drop is low, and therefore, transistor Tr is retained as cut-off state.
Therefore, the crank letter for interrupting terminal INT inputs from the crank signal generating unit 7 shown in Fig. 7 to microcomputer
Number present Figure 11（D）Shown such waveform, is that the output voltage in the startup of engine in power circuit reaches threshold value
The timing t 3 that timing t 1 ' and the 3rd half-wave voltage V3 are produced rises to high level from low level and become in the first half-wave voltage V1
The timing for being zero（The timing that second half-wave voltage is produced）T2 and the timing t 4 of the 3rd half-wave voltage V3 vanishing are under high level
It is reduced to the wavy signal of low level rectangle.In addition, in the state of the output voltage of power circuit to be remained to more than threshold value,
For the timing t 3 that the half-wave voltage V3 of timing t 1 and the 3rd produced in the first half-wave voltage V1 is produced high electricity is risen to from low level
The timing t 4 of the half-wave voltage V3 vanishing of timing t 2 and the 3rd flat and in the first half-wave voltage V1 vanishing is under high level
It is reduced to the wavy signal of low level rectangle.
In the case where making the crank signal generation of waveform as described above, make microcomputer identification in the first half-wave electricity
The timing t 1 for pressing V1 to produce（In the startup of engine, the output voltage of power circuit reaches the timing t 1 ' of threshold value）Produce from
Low level is produced to the rising of high level and in the first half-wave voltage V1 vanishing and the second half-wave voltage V2 timing t 2 produced
Raw declines from high level to low level, thereby, it is possible to which the crank angular position of engine corresponding with timing t 1 and t2 is believed
Cease and provided to microcomputer, the cycle that can be changed according to the level for the crank signal for detecting to produce in timing t 1（Crank
Axle rotate 1 week required for time）Ask for the rotary speed of engine.Similarly, also can be according to detecting to produce in timing t 2
The cycle of the level change of raw crank signal asks for the rotary speed of engine.
Further, the timing produced in the 3rd half-wave voltage V1（The timing of second half-wave voltage V2 vanishing）T3 and the 3rd half
The timing t 4 of wave voltage V3 vanishing also produces level change in crank signal, still, in the once electric of cut-out ignition coil
Stream is come in the case of carrying out ignition operation, near timing t 3 and t4, the voltage waveform significantly entanglement at the two ends of primary winding,
With this concomitantly, the waveform of crank signal also entanglement, accordingly, it is difficult to be changed according to the level of the crank signal at timing t 3 and t4
Accurately obtain the rotation information of engine.
In the present embodiment, as the microcomputer MCU programs performed main program with Figure 12 shown in main program phase
Together, memory initialization process is identical with the processing shown in Figure 13.In addition, starting A/D handles identical with the processing shown in Figure 14,
Ignition timer interrupt processing is identical with the processing shown in Figure 17.In the present embodiment, instead of making in the first embodiment
The benchmark Interruption processing for Figure 15 that microcomputer is performed, performs interrupt processing during the INT inputs shown in Figure 18.In figure
Enter to exercise the processing that IGBT T1 are the state that can be turned in 18 processing, therefore, the timer interruption shown in Figure 16 is not performed
Processing.
Interrupt processing is in Figure 11 when INT shown in Figure 18 is inputted（D）Shown timing t 1（The power supply in the startup of engine
The output voltage of circuit reaches the timing t 1 ' of threshold value）There is provided from crank signal generating unit 7 to microcomputer MCU INT terminals
Performed when changing from low level to the level of high level.In managing in this place, the survey of timing timer is read in step S401 '
Value, by this reading measured value with it is previous（Before the rotation 1 week of crank axle）Interrupt processing during the INT inputs of progress
The difference of the measured value read in step S01 ' is detected as cycle time.According to the rotary speed of the cycle time computing engine come
Timing is set to be started again at timer.
Then, make in step S402 ' from the port A of microcomputer to IGBT T1 grid offer drive signal
IGBT T1 are the state that can be turned on, interrupt processing when the next INT of license is inputted.Then, in igniting in step S403 '
Ignition timing measured value is set in timer, sets after computing opening flag, in step S405 ', returns in step S404 '
The processing performed when interrupt processing is shifted when being inputted to INT.
In the present embodiment, interrupt processing constitutes ignition control unit when starting when being inputted by the INT shown in Figure 18
13 and it is usual when ignition control unit 14.Other structures of present embodiment are identical with the first embodiment shown in Fig. 1, remove
Replace detecting engine rotary speed according to the detection cycle of benchmark timing and being transported according to the generation interval of crank signal
Calculate the aspect of the rotary speed of engine and recognize the crank that the timing t 1 produced in the first half-wave is produced in microcomputer
Make during the level change of signal outside the aspect that the measurement of ignition timing starts, worked with first embodiment identical.
In the above description, it is assumed that microcomputer is performed in the level change for recognizing the crank signal at timing t 1
Interrupt processing when INT is inputted, however, it is also possible to which the level for being configured to crank signal of the microcomputer at identification timing t 2 becomes
Interrupt processing when INT inputs are performed during change.That is, the state that can be also configured to carry out making IGBT in timing t 2 to turn on
The computing of the rotary speed of processing and engine, also, start the measurement of ignition timing.
[the 4th embodiment]
It is hard figure 9 illustrates what is used in this embodiment figure 8 illustrates the overall structure of the 4th embodiment
The structure of part.In the present embodiment, in the same manner as second embodiment, ignition coil IG possesses relative to once in primary side
Coil Wp is connected in series and sensed the interpole coil Wa of the voltage of the voltage same phase with sensing in the primary winding, electricity
Source circuit 5 be configured to the voltage that will be sensed when the first half-wave voltage V1 is sensed in primary winding Wp in interpole coil Wa and
The voltage transformation sensed when sensing the 3rd half-wave voltage V3 in primary winding Wp in interpole coil Wa is DC voltage.
Power circuit 5 shown in Fig. 9 and the power circuit 5 used in this second embodiment（Reference picture 5）Similarly structure
Into.In addition, the crank signal generating unit 7 shown in Fig. 9 is made up of following part：Emitter stage be grounded and colelctor electrode be connected to it is miniature
The interrupting input terminal INT of computer NPN transistor Tr, be connected to power circuit 5 capacitor C2 ungrounded side terminal
（The positive side lead-out terminal of power circuit 5）Resistance R5 between transistor Tr colelctor electrode, the base stage for being connected to transistor Tr
Resistance R8, the anode of transmitting interpolar are connected to the diode D6 of interpole coil Wa ungrounded side terminal and are connected to two poles
The differential circuit that the series circuit by resistance R7 and capacitor C7 between pipe D6 negative electrode and transistor Tr base stage is constituted.
In the crank signal generating unit 7 shown in Fig. 9, when sensing the first half-wave voltage in primary winding Wp and once
When sensing the 3rd half-wave voltage V3 in coil Wp, base current is from interpole coil Wa by diode D6 and by resistance R7 and electricity
The differential circuit that container C7 is constituted flows to transistor Tr, therefore, and transistor Tr is conducting state.In addition, in primary winding Wp
In non-induced voltage when and when sensing the second half-wave voltage V2 in primary winding Wp, transistor Tr is cut-off state.
Therefore, the crank letter for interrupting terminal INT inputs from the crank signal generating unit 7 shown in Fig. 9 to microcomputer
Number timing t 1 produced for alternating voltage VL the first half-wave voltage V1 sensed in primary winding（In the startup of engine
The output voltage of power circuit 5 reaches the timing t 1 ' of threshold value）The timing produced with the 3rd half-wave voltage V3（Second half-wave voltage
The timing of V2 vanishing）T3 drops to low level and in the timing of the first half-wave voltage V1 vanishing from high level（The second half
The timing that wave voltage is produced）T2 and the timing t 4 of the 3rd half-wave voltage V3 vanishing rise to the square wave of high level from low level
The signal of shape.The waveform of the crank signal is to make Figure 11（D）Waveform after the waveform reversion of shown crank signal.
In the case of using present embodiment, make microcomputer identification in timing t 1（Or t1 '）The crank letter of generation
Number change from high level to low level level or timing t 2 produce crank signal the electricity from low level to high level
Flat change, carries out interrupt processing during the INT inputs shown in Figure 18, thereby, it is possible to constitute during startup ignition control unit and generally
When ignition control unit 14.
Further, in Figure 10 and Figure 11, the magnetic interlinked with primary winding is approx schematically illustrated with triangular waveform
Flux φ, the voltage VL sensed in primary winding and primary current I1 waveform, still, the magnetic flux interlinked with primary winding
The waveform close to sine wave is presented in φ, the voltage VL sensed in primary winding and primary current I1 actual waveform.
In above-mentioned each embodiment, it is assumed that with the primary current that will be detected by primary current test section to peaking
The ignition control unit when mode that ignition timing during to start is asked in timing constitutes startup, however, it is also possible to will be by once electric
Timing of the primary current of stream test section detection when being reduced to set level after more than peak value is asked for starting time point
The ignition control unit when mode in fiery period constitutes startup.
In the ignition device for internal combustion of failure of current type, when cutting off the primary current of ignition coil in primary winding
During the excessive voltage of middle sensing, the high voltage sensed in the secondary coil of ignition coil is excessively high, there is ignition coil two
The possibility of the insulation breakdown of secondary side.In order to prevent such state of affairs from producing, it is preferably provided with cut-out current control switch 2
When the voltage that senses in primary winding be limited to primary induction voltage limiting unit below set level.
The primary induction voltage limiting unit for example realized by constituting circuit also can, current collection of the circuit in IGBT
It is connected with negative electrode between pole and grid towards the Zener diode of IGBT colelctor electrode side and IGBT is remained into conducting shape
The voltage that state senses when making IGBT be cut-off state in primary winding Wp is reduced to below setting level, is used as composition
The semiconductor switch of current control switch 2, by using with active-clamp（active clamp）The switch of characteristic（Have
IGBT or bipolar transistor of the function voltage at two ends being limited to below fixed value etc.）Also may be used to realize.
The explanation of reference
1 magneto
2 current controls are switched
3 firing circuits
4 spark plugs
5 power circuits
6 primary current test sections
7 crank signal generating units
10 IGNITION CONTROL portions
11 switch drive units
12 benchmark timing detection units
Ignition control unit during 13 startup
14 it is usual when ignition control unit
14A rotary speed arithmetic elements
Ignition timing arithmetic element when 14B is usual
Ignition timing detection unit when 14C is usual
14D switch OFF units.
Claims (10)
1. a kind of internal combustion engine ignition device, possesses：
Firing circuit, the stator possessed in the magneto for being installed on internal combustion engine is provided with primary winding and secondary coil and in institute
State internal combustion engine crank axle rotate 1 week during only sense in primary winding once have negative polarity the first half-wave and positive pole
The ignition coil of the alternating voltage for the waveform that second half-wave of property and the 3rd half-wave of negative polarity occur successively and relative to described
The current control switch that the primary winding of ignition coil is connected in parallel, becomes making the current control switch from on-state
The high voltage of inductive ignition carries out ignition operation in the secondary coil of the ignition coil during for off state；And
IGNITION CONTROL portion, is controlled to light a fire to the firing circuit to the current control with the on or off of switch
The timing of work（Ignition timing）It is controlled, described device is characterised by, possesses：
Primary current test section, the primary current flowed to the primary winding by the ignition coil is detected；It is miniature
Computer, using the information of the primary current detected by the primary current test section to carry out in order to constitute the IGNITION CONTROL
Portion and the processing needed；And power circuit, the alternating voltage that the magneto is exported is transformed to DC voltage and this is straight
Stream voltage is provided to the microcomputer is used as supply voltage,
The IGNITION CONTROL portion possesses：Switch drive unit, before sensing second half-wave voltage in the primary winding
During provide drive signal with switch to make current control switch be the state that can connect to the current control；Base
Detection unit when certainly, determines on the basis of the timing detection that the primary current detected by the primary current test section is reached to threshold value
When；Ignition control unit during startup, is detected once in the startup of the internal combustion engine according to by the primary current test section
Ignition timing during to start is asked in the timing of ignition timing when the waveform of electric current is possible to the startup as the internal combustion engine,
Make the current control when seeking out the startup during ignition timing at once with switch is off state to enter the firing circuit
Row ignition operation；And ignition control unit when generally, detect institute for basis after the start completion of the internal combustion engine
The ignition timing of internal combustion engine described in the rotating speed data computing for the internal combustion engine that cycle of benchmark timing obtains is stated, in detection
It is off state with switch to make the current control during ignition timing for going out institute's computing, thus, the firing circuit is carried out point
Firer makees.
2. a kind of internal combustion engine ignition device, possesses：
Firing circuit, the stator possessed in the magneto for being installed on internal combustion engine is provided with primary winding and secondary coil and in institute
State internal combustion engine crank axle rotate 1 week during only sense in primary winding once have negative polarity the first half-wave and positive pole
The ignition coil of the alternating voltage for the waveform that second half-wave of property and the 3rd half-wave of negative polarity occur successively and relative to described
The current control switch that the primary winding of ignition coil is connected in parallel, becomes making the current control switch from on-state
The high voltage of inductive ignition carries out ignition operation in the secondary coil of the ignition coil during for off state；And
IGNITION CONTROL portion, is controlled to light a fire to the firing circuit to the current control with the on or off of switch
The timing of work（Ignition timing）It is controlled, described device is characterised by, possesses：
Primary current test section, the primary current flowed to the primary winding by the ignition coil is detected；Crank
Signal generation portion, the song of the crank angle information comprising the internal combustion engine is generated using the voltage sensed in the primary winding
Handle signal；Microcomputer, uses the information and the utilization crank of the primary current detected by the primary current test section
The processing that the crank angle information that signal is provided needs to carry out in order to constitute the IGNITION CONTROL portion；And power circuit, will
The alternating voltage of the magneto output is transformed to DC voltage and provides to make to the microcomputer by the DC voltage
For supply voltage,
The IGNITION CONTROL portion possesses：Switch drive unit, before sensing second half-wave voltage in the primary winding
During provide drive signal with switch to make current control switch be the state that can connect to the current control；Open
Ignition control unit when dynamic, in the startup of the internal combustion engine according to the primary current detected by the primary current test section
Ignition timing during to start is asked in the timing of ignition timing when waveform is possible to the startup as the internal combustion engine, is being sought out
Make the current control during startup during ignition timing at once with switch is off state to make the firing circuit be lighted a fire
Work；And ignition control unit when generally, it is directed to after the start completion of the internal combustion engine according to the crank signal
Produce the ignition timing of internal combustion engine described in the rotating speed data computing for the internal combustion engine that interval is obtained, the computing detecting
Ignition timing when make the current control be off state with switch, thus, the firing circuit is carried out ignition operation.
3. internal combustion engine ignition device according to claim 1 or 2, wherein, the power circuit is configured to：By described one
The first half-wave voltage and the 3rd half-wave voltage of secondary coil sensing are transformed to DC voltage, by the DC voltage to the microcomputer
Calculation machine, which is provided, is used as supply voltage.
4. internal combustion engine ignition device according to claim 1 or 2, it is characterised in that
The ignition coil possesses interpole coil in primary side, the interpole coil be connected in series relative to the primary winding and
Sensing and the voltage of the voltage same phase sensed in the primary winding,
The power circuit is configured to when sensing the first half-wave voltage in the primary winding in the interpole coil to feel
The voltage answered and the voltage transformation sensed in the primary winding during three half-wave voltage of sensing in the interpole coil are
The DC voltage.
5. internal combustion engine ignition device according to claim 1 or 2, it is characterised in that IGNITION CONTROL list during the startup
Member is configured to ask for the timing of the primary current to the peaking that are detected by the primary current test section for the startup time point
Fiery period.
6. internal combustion engine ignition device according to claim 1 or 2, it is characterised in that IGNITION CONTROL list during the startup
Member is configured to being reduced to the primary current detected by the primary current test section into set level after more than peak value
When timing ask for ignition timing during for the startup.
7. internal combustion engine ignition device according to claim 1 or 2, it is characterised in that the IGNITION CONTROL portion is configured to：
During before the number of times of the ignition operation carried out after starting the start-up operation of the internal combustion engine reaches set number of times
Ignition timing is controlled by ignition control unit during the startup, the point carried out after the start-up operation of the internal combustion engine is started
The number of times that firer makees reach after set number of times by it is described usual when ignition control unit control ignition timing.
8. internal combustion engine ignition device according to claim 2, it is characterised in that the crank signal generating unit is configured to
First of waveform using the alternating voltage sensed in the primary winding of the ignition coil as input in the alternating voltage
The timing or the waveform of the alternating voltage that half-wave starts are shifted from the first half-wave produces the crank for the timing of the second half-wave
Signal.
9. internal combustion engine ignition device according to claim 2, it is characterised in that
The ignition coil possesses interpole coil in primary side, the interpole coil be connected in series relative to the primary winding and
Sensing and the voltage of the voltage same phase sensed in the primary winding,
The crank signal generating unit be configured to the voltage that will sense in the interpole coil as input it is described once
Timing that first half-wave of the waveform of the alternating voltage sensed in coil starts or the alternating current sensed in the primary winding
The waveform of pressure shifts from the first half-wave and produces the crank signal for the timing of the second half-wave.
10. internal combustion engine ignition device according to claim 1 or 2, it is characterised in that be provided with primary induction voltage limit
Unit processed, the primary induction voltage limiting unit will be felt when cutting off the current control switch in the primary winding
The voltage answered is limited to below set level.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2014/067363 WO2016001968A1 (en) | 2014-06-30 | 2014-06-30 | Ignition device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107076096A true CN107076096A (en) | 2017-08-18 |
| CN107076096B CN107076096B (en) | 2019-06-07 |
Family
ID=55018570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480080332.3A Expired - Fee Related CN107076096B (en) | 2014-06-30 | 2014-06-30 | Internal combustion engine ignition device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6412572B2 (en) |
| CN (1) | CN107076096B (en) |
| WO (1) | WO2016001968A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630423A (en) * | 2018-06-21 | 2019-12-31 | 东洋电装株式会社 | Ignition device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10995726B2 (en) | 2018-03-29 | 2021-05-04 | Woodward, Inc. | Current profile optimization |
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| CN1219996A (en) * | 1996-03-25 | 1999-06-16 | 福特汽车公司 | Method and system for generating ignition coil control pulses |
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| JP2008045458A (en) * | 2006-08-11 | 2008-02-28 | Kokusan Denki Co Ltd | Capacitor discharge type engine ignition device |
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| JP4524635B2 (en) * | 2005-03-08 | 2010-08-18 | 飯田電機工業株式会社 | Ignition operation control method and ignition point control device in lower limit speed range of internal combustion engine ignition device. |
| US9739250B2 (en) * | 2013-04-03 | 2017-08-22 | Kokusan Denki Co., Ltd. | Internal combustion engine ignition device |
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- 2014-06-30 JP JP2016530693A patent/JP6412572B2/en not_active Expired - Fee Related
- 2014-06-30 WO PCT/JP2014/067363 patent/WO2016001968A1/en active Application Filing
- 2014-06-30 CN CN201480080332.3A patent/CN107076096B/en not_active Expired - Fee Related
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| JPH0552168A (en) * | 1991-08-22 | 1993-03-02 | Kokusan Denki Co Ltd | Capacitor discharging ignition device for internal combustion engine |
| CN1219996A (en) * | 1996-03-25 | 1999-06-16 | 福特汽车公司 | Method and system for generating ignition coil control pulses |
| JP2001304085A (en) * | 2000-04-28 | 2001-10-31 | Ngk Spark Plug Co Ltd | Igniter for internal combution engine |
| JP2002174163A (en) * | 2000-12-06 | 2002-06-21 | Denso Corp | Ignition control device for internal combustion engine |
| JP2008045458A (en) * | 2006-08-11 | 2008-02-28 | Kokusan Denki Co Ltd | Capacitor discharge type engine ignition device |
| WO2008114780A1 (en) * | 2007-03-19 | 2008-09-25 | Kokusan Denki Co., Ltd. | Ignition device for internal combustion engine |
| JP2010180854A (en) * | 2009-02-09 | 2010-08-19 | Iida Denki Kogyo Kk | Ignition timing control device of internal combustion engine ignition apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630423A (en) * | 2018-06-21 | 2019-12-31 | 东洋电装株式会社 | Ignition device |
| CN110630423B (en) * | 2018-06-21 | 2022-04-29 | 东洋电装株式会社 | Ignition device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016001968A1 (en) | 2016-01-07 |
| JP6412572B2 (en) | 2018-10-24 |
| CN107076096B (en) | 2019-06-07 |
| JPWO2016001968A1 (en) | 2017-05-25 |
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