CN102996316B - Ignition control device for engine - Google Patents
Ignition control device for engine Download PDFInfo
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- CN102996316B CN102996316B CN201110276598.3A CN201110276598A CN102996316B CN 102996316 B CN102996316 B CN 102996316B CN 201110276598 A CN201110276598 A CN 201110276598A CN 102996316 B CN102996316 B CN 102996316B
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- voltage
- electrically connected
- bipolar junction
- junction transistor
- pulse generator
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Abstract
The invention discloses an ignition control device for an engine. The ignition control device for the engine comprises a pulse generator and a control unit, wherein the control unit comprises a microcontroller and a printed circuit board. The printed circuit board is electrically connected with the microcontroller. The printed circuit board comprises a trailing edge signal producing circuit; the trailing edge signal producing circuit is electrically connected to the microcontroller; the trailing edge signal producing circuit comprises a bipolar junction transistor; an emitter (E) of the bipolar junction transistor is electrically connected to the pulse generator; a collector (C) of the bipolar junction transistor is electrically connected to the microcontroller; and moreover, a base (B) of the bipolar junction transistor is increased to a predetermined voltage level which is higher than 0 volt.
Description
Technical field
The present invention relates to a kind of ignition control device, particularly relate to a kind of ignition control device of engine startup system.
Background technique
The speed of motorcycle and flexibility are subject to popular reason for it, and with regard to the operation of motorcycle, that the fresh air that imported in the external world and fuel oil are delivered to after Carburetor is mixed into oil gas, again oil gas input engine is fired generation power, and promote reciprocating motion of the pistons, with the rotation driving speed variator system to drive trailing wheel, trailing wheel then drives front-wheel synchronous axial system, reach the object of advancing, generally namely restart soon after motorcycle stops, engine running can be started easily, but when stopping for a long time (being namely commonly called as cold car), then when starting engine under cold car state, will comparatively difficulty cannot start smoothly.
With reference to figure 1, TaiWan, China letters patent book number I300821 discloses a kind of engine startup system 7.Engine startup system 7 comprises power subsystem 71, lock on switch 70 and inductor 72.Power subsystem 71 (such as storage battery) in order to whole motorcycle is provided engine startup system 7 needed for voltage and electric current.Engine startup system 7 also comprises controller for motor 73 and ignition control device 75, wherein controller for motor 73 is in order to drive the crank rotation of engine (not shown), and ignition control device 75 reaches engine ongoing operation voluntarily in order to make spark plug light a fire.Lock on switch 70 is electrically connected on power subsystem 71, controller for motor 73 and ignition control device 75.Inductor 72 is electrically connected on lock on switch 70 and ignition control device 75, and inductor 72 is electrically connected on power subsystem 71 via power-on switch 78.Induction pieces 74 (such as chip card) makes lock on switch 70 be switched by inductor 72 sympathetically.
Controller for motor 73 Bao Kuo Brake car arm indicator cock 731, enable switch 733, relay 737 are connected in series with the field coil 735 of relay 737 mutually with starting motor 739 Brake car arm indicator cock 731, enable switch 733, and one of relay 737 group of wet contact 738 is electrically connected on power subsystem 71 and starting motor 739.When Brake car arm indicator cock 731 is on state with enable switch 733, make the field coil 735 of relay 737 excitatory, and make relay 737 for serviceability, namely wet contact 738 is on state, make power subsystem 71 be powered at starting motor 739, make starting motor 739 rotate and drive the crank rotation of engine.
Ignition control device 75 comprises capacitive discharge ignition (Capacitive Discharge Ignition; CDI) 751, high-tension coil 753, spark plug 755 and fire signal producer 757, wherein capacitive discharge ignition 751, high-tension coil 753 and spark plug 755 electricity series connection mutually, and fire signal producer 757 is electrically connected on capacitive discharge ignition 751, with the ON time of control capacitance discharge ignition 751, and make high-tension coil 753 produce high pressure, and be powered at spark plug 755, make spark plug 755 produce electric arc and light a fire, make engine can continue voluntarily to rotate.Fire signal producer 757 comprises alternator (Alternating Curren tGenerator; ACG) 7571 with pulse generator (Pulser) 7573, be with motor alternator 7571 to generate electricity when engine rotates, and be transmitted in pulse generator 7573, and this pulse generator 7573 just can control capacitance discharge ignition 751, high pressure is produced to make high-tension coil 753, and be powered at spark plug 755, make spark plug 755 produce electric arc and light a fire.
With reference to figure 2, TaiWan, China letters patent book number I344430 discloses a kind of engine structure of motor cycle.Bent axle 81 is provided with flywheel 82, pulse generator 83 in left crankcase side, described flywheel 82 is provided with projection 821, when bent axle 81 rotates flywheel driven 82, the projection 821 on flywheel 82 is responded to by pulse generator 83, the exportable signal of described pulse generator 83 is to capacitive discharge ignition, and described capacitive discharge ignition then can make spark plug do accurate firing action.
With reference to figure 3, TaiWan, China letters patent book number 104401 discloses a kind of traditional ignition mechanism 91 (such as capacitive discharge ignition (CDI) or crystallization coil igniting (TCI)), low voltage (Vs) supply 93, capacitor 96 and 98, diode 90,92 and a resistance 94.Traditional ignition mechanism 91 provides and produces the high voltage (magnetic fields increases the volume of electricity slurry) of collapsing or needed for ionization to the fuel-air mixture in the gap on the surface 971 along traveling spark device (TSI) 97.
Above-mentioned 3 sections of patents all do not disclose when low-temperature condition starting motor operates, pulse generator (Pulser) voltage that alternator (ACG) produces is low compared with the pulse generator voltage of normal temperature state, and the trailing edge voltage of pulse generator is slightly lower than the leading edge voltage of pulse generator.When the trailing edge voltage of pulse generator is lower than 1.2V, then effectively cannot trigger the bipolar junction transistor (BJT) of the trailing edge circuit of capacitive discharge ignition (CDI), therefore cannot produce trailing edge signal to the microcontroller (MCU) sending out capacitive discharge ignition (CDI).Because microcontroller (MCU) judges when make spark plug light a fire, therefore when the slow-speed of revolution, if trailing edge jitter, then to cause spark plug misfire, make car engine not easily start according to trailing edge signal.
Therefore, need to provide a kind of engine ignition control apparatus, aforesaid problem can be solved.
Summary of the invention
The invention provides a kind of engine ignition control apparatus to comprise: pulse generator, and control unit, comprise microcontroller and printed circuit board (PCB), described printed circuit board (PCB) is electrically connected on described microcontroller, wherein said printed circuit board (PCB) comprises trailing edge signal generating circuit, described trailing edge signal generating circuit is electrically connected to microcontroller, described trailing edge signal generating circuit comprises bipolar junction transistor, the emitter-base bandgap grading (E) of described bipolar junction transistor is electrically connected to described pulse generator, the collector (C) of described bipolar junction transistor is electrically connected to described microcontroller, and the base stage of described bipolar junction transistor (B) is promoted to the predetermined voltage level being greater than 0 volt, wherein said printed circuit board (PCB) also comprises bleeder circuit and leading signal produces circuit, after described leading signal produces circuit and the parallel connection of described trailing edge signal generating circuit, connect with described bleeder circuit again, described bleeder circuit is electrically connected to described pulse generator, described leading signal produces circuit and is electrically connected to described microcontroller, and the emitter-base bandgap grading of described bipolar junction transistor (E) is electrically connected to described pulse generator via described bleeder circuit.
The base stage (B) of bipolar junction transistor of the present invention is promoted to predetermined voltage level, can reduce the trigger voltage of the trailing edge voltage signal of pulse generator significantly.Because microcontroller (MCU) judges when make spark plug light a fire according to trailing edge signal, therefore when the slow-speed of revolution below minus 20 degrees Celsius, the trailing edge signal stabilization of ignition control device of the present invention, can not cause spark plug misfire, and car engine can be made easily to start.
In order to allow, the present invention is above-mentioned more obviously, hereafter can will be coordinated accompanying drawing, be described in detail below with other object, feature and advantage.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the engine startup system of prior art;
Fig. 2 is the configuration schematic diagram of the bent axle of prior art, flywheel and pulse generator;
Fig. 3 is the schematic diagram of the ignition mechanism of prior art;
Fig. 4 is the schematic diagram of the engine startup system of the embodiment of the present invention;
Fig. 5 is the control unit of the embodiment of the present invention and the schematic diagram of pulse generator;
Fig. 6 illustrates the voltage signal of the pulse generator of the embodiment of the present invention; And
Fig. 7 is the circuit diagram of the printed circuit board (PCB) of the embodiment of the present invention.
[primary component symbol description]
1 engine startup system 10 lock on switch
11 power subsystem 13 controller for motor
131 Brake car arm indicator cock 133 enable switches
137 relay 135 field coils
138 wet contact 139 starting motors
15 ignition control device 151 control units
153 high-tension coil 155 spark plugs
157 fire signal producer 1571 alternators
1573 pulse generators
1511 printed circuit board (PCB) 1512 microcontrollers
1513 bleeder circuit 1514 leading signal produce circuit
1515 trailing edge signal generating circuit 1515a bipolar junction transistors
1515b bipolar junction transistor
7 engine startup system 70 lock on switchs
71 power subsystem 72 inductors
73 controller for motor 731 Brake car arm indicator cocks
733 enable switch 737 relays
735 field coil 738 wet contacts
739 starting motors
74 induction pieces 78 power-on switchs
75 ignition control device 751 capacitive discharge ignitions
753 high-tension coil 755 spark plugs
757 fire signal producer 7571 alternators
7573 pulse generators
81 bent axle 82 flywheels
821 projection 83 pulse generators
90 diode 91 ignition mechanisms
92 diode 93 low voltage (Vs) supplies
94 resistance 96 capacitors
97 traveling spark device 971 surfaces
98 capacitors
Embodiment
With reference to figure 4, it illustrates the engine startup system 1 of the embodiment of the present invention.Engine startup system 1 comprises power subsystem 11, lock on switch 10, controller for motor 13 and ignition control device 15.Power subsystem 11 (such as storage battery) in order to whole motorcycle is provided engine starting device 1 needed for voltage and electric current.Controller for motor 13 is in order to drive the crank rotation of engine (not shown), and ignition control device 15 reaches engine ongoing operation voluntarily in order to make spark plug light a fire.Lock on switch 10 is electrically connected on power subsystem 11, controller for motor 13 and ignition control device 15, that is lock on switch 10 is in order to control conducting between power subsystem 11 and controller for motor 13 and ignition control device 15.
Controller for motor 13 Bao Kuo Brake car arm indicator cock 131, enable switch 133, relay 137 are connected in series with the field coil 135 of relay 137 mutually with starting motor 139 Brake car arm indicator cock 131, enable switch 133, and one of relay 137 group of wet contact 178 is electrically connected on power subsystem 11 and starting motor 139.When Brake car arm indicator cock 131 is on state with enable switch 133, make the field coil 135 of relay 137 excitatory, and make relay 137 for serviceability, namely wet contact 138 is on state, make power subsystem 11 be powered at starting motor 139, make starting motor 139 rotate and drive the crank rotation of engine.
Ignition control device 15 comprises control unit 151, high-tension coil 153, spark plug 155 and fire signal producer 157.Control unit 151 is similar to capacitive discharge ignition (CapacitiveDischarge Ignition; CDI).The electricity series connection mutually of control unit 151, high-tension coil 153 and spark plug 155, and fire signal producer 157 is electrically connected on control unit 151, to determine the ON time of control unit 151, and make high-tension coil 153 produce high pressure, and be powered at spark plug 155, make spark plug 155 produce electric arc and light a fire, make engine can continue voluntarily to rotate.Fire signal producer 157 comprises alternator (Alternating Current Generator; ACG) 1571 with pulse generator (Pulser) 1573, when lock on switch 10 controls conducting between power subsystem 11 and controller for motor 13 and described ignition control device 15, when engine rotates, band motor alternator 1571 generates electricity, and be transmitted in pulse generator 1573, the voltage signal of pulse generator 1573 can be transferred into control unit 151, and this pulse generator 1573 just can determine control unit 151, high pressure is produced to make high-tension coil 153, and be powered at spark plug 155, make spark plug 155 produce electric arc and light a fire.
With reference to figure 5, control unit 151 comprises microcontroller 1512 and printed circuit board (PCB) 1511, and printed circuit board (PCB) 1511 can be modularization, and is electrically connected on microcontroller 1512.In detail, printed circuit board (PCB) 1511 comprises bleeder circuit 1513, leading signal produces circuit 1514 and trailing edge signal generating circuit 1515.After leading signal produces circuit 1514 and trailing edge signal generating circuit 1515 parallel connection, then connect with bleeder circuit 1513.Bleeder circuit 1513 is electrically connected to pulse generator 1573, and leading signal produces circuit 1514 and trailing edge signal generating circuit 1515 is electrically connected to microcontroller 1512 respectively.With reference to figure 6, the voltage signal of pulse generator 1573 is leading signal positive voltage and trailing edge signal negative voltage, the voltage signal of the low-temperature condition of the pulse generator 1573 especially below minus 20 degrees Celsius is low compared with the voltage signal of normal temperature state, and the trailing edge voltage of pulse generator 1573 is slightly lower than the leading edge voltage of pulse generator 1573.Bleeder circuit 1513 in order to the voltage signal of stable pulse generator 1573, and converts string ripple to square wave.Leading signal produces circuit 1514 provides leading signal to microcontroller 1512, when can be used as engine height rotating speed, and spark plug igniting basis for estimation.Trailing edge signal generating circuit 1515 provides trailing edge signal to microcontroller 1512, when can be used as the engine slow-speed of revolution, and spark plug igniting basis for estimation.
With reference to figure 7, in this enforcement, bleeder circuit 1513 can be made up of multiple resistance, electric capacity, voltage divider etc.Leading signal produces circuit 1514 and can be made up of multiple resistance, electric capacity and bipolar junction transistor (BJT) etc.Trailing edge signal generating circuit 1515 can be made up of multiple resistance, electric capacity and bipolar junction transistor (BJT) etc.The bleeder circuit 1513 of Fig. 7, leading signal produce the configuration design of the electronic component (resistance, electric capacity and bipolar junction transistor etc.) of circuit 1514 and trailing edge signal generating circuit 1515 in order to the present invention to be described, and unrestricted the present invention.
Especially, trailing edge signal generating circuit 1515 comprises bipolar junction transistor 1515a, the emitter-base bandgap grading (E) of bipolar junction transistor 1515a can be electrically connected to pulse generator 1573 via bleeder circuit 1513, the collector (C) of bipolar junction transistor 1515a can be electrically connected to microcontroller 1512 via another bipolar junction transistor 1515b, and the base stage of bipolar junction transistor 1515a (B) is promoted to the predetermined voltage level being greater than 0V (volt).
Illustrate, receive power subsystem 12V voltage by integrated regulator (such as model 7805), and 12V voltage transitions is become 5V voltage.In the present embodiment, 5V voltage, through the adjustment of resistance R20, R21, makes the base stage of bipolar junction transistor 1515a (B) voltage VB be set as the predetermined voltage level of 0.3125V.Due to bipolar junction transistor 1515a turn-on condition be VBE at least about needing more than 0.7V, therefore emitter-base bandgap grading (E) the voltage VB of bipolar junction transistor 1515a need only be greater than 0.387V (negative voltage) and gets final product conducting.Adjustment due to resistance R8, R9 through bleeder circuit 1513 can make the voltage signal of pulse generator 1573 reduce, therefore the voltage signal of pulse generator 1573 only need be greater than 0.651V (negative voltage) can triggering and conducting bipolar junction transistor 1515a, to provide trailing edge signal to microcontroller 1512, during as the engine slow-speed of revolution, spark plug igniting basis for estimation.During the slow-speed of revolution particularly below ambient temperature minus 20 degrees Celsius, the voltage signal of pulse generator 1573 of the present invention only needs low voltage, still can triggering and conducting bipolar junction transistor 1515a, to provide trailing edge signal to microcontroller 1512, as the use of spark plug igniting.
Must be greater than 1.2V (negative voltage) compared to the trailing edge voltage signal of the pulse generator of prior art, ability conducting bipolar junction transistor, the present invention only need be greater than 0.651V (negative voltage) can triggering and conducting bipolar junction transistor.In other words, the base stage (B) of bipolar junction transistor of the present invention is promoted to predetermined voltage level, can reduce the trigger voltage of the trailing edge voltage signal of pulse generator significantly.Because microcontroller (MCU) judges when make spark plug light a fire according to trailing edge signal, therefore when the slow-speed of revolution below minus 20 degrees Celsius, the trailing edge signal stabilization of ignition control device of the present invention, can not cause spark plug misfire, and car engine can be made easily to start.
In sum, being only mode of execution or the embodiment of notebook invention for presenting adopted technological means of dealing with problems, being not used for limiting the scope of patent working of the present invention.Namely allly to conform to the claims in the present invention context, or the equivalent variations made according to the scope of the claims of the present invention and amendment, be all the scope of the claims of the present invention and contain.
Claims (5)
1. an engine ignition control apparatus, comprising:
Pulse generator; And
Control unit, comprise microcontroller and printed circuit board (PCB), described printed circuit board (PCB) is electrically connected on described microcontroller, wherein said printed circuit board (PCB) comprises trailing edge signal generating circuit, described trailing edge signal generating circuit is electrically connected to microcontroller, described trailing edge signal generating circuit comprises bipolar junction transistor, the emitter-base bandgap grading (E) of described bipolar junction transistor is electrically connected to described pulse generator, the collector (C) of described bipolar junction transistor is electrically connected to described microcontroller, and the base stage of described bipolar junction transistor (B) is promoted to the predetermined voltage level being greater than 0 volt,
Wherein said printed circuit board (PCB) also comprises bleeder circuit and leading signal produces circuit, after described leading signal produces circuit and the parallel connection of described trailing edge signal generating circuit, connect with described bleeder circuit again, described bleeder circuit is electrically connected to described pulse generator, described leading signal produces circuit and is electrically connected to described microcontroller, and the emitter-base bandgap grading of described bipolar junction transistor (E) is electrically connected to described pulse generator via described bleeder circuit.
2. engine ignition control apparatus according to claim 1, also comprise integrated regulator, in order to receive the first voltage of power subsystem, and described first voltage transitions is become the second voltage, described second voltage is less than described first voltage, wherein said trailing edge signal generating circuit also comprises two resistance, through the adjustment of described two resistance, makes the base stage of described bipolar junction transistor (B) voltage sets be described predetermined voltage level.
3. engine ignition control apparatus according to claim 2, wherein below ambient temperature minus 20 degrees Celsius, described first voltage is 12V, described second voltage 5V, the voltage signal of described pulse generator is greater than 0.651V (negative voltage) and gets final product bipolar junction transistor described in triggering and conducting.
4. engine ignition control apparatus according to claim 1, wherein also comprise high-tension coil, spark plug and fire signal producer, the electricity series connection mutually of described control unit, high-tension coil and spark plug, and described fire signal producer is electrically connected on described control unit.
5. engine ignition control apparatus according to claim 1, wherein lock on switch is in order to control conducting between power subsystem and controller for motor and described ignition control device, makes the voltage signal of described pulse generator be sent to described control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110276598.3A CN102996316B (en) | 2011-09-13 | 2011-09-13 | Ignition control device for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110276598.3A CN102996316B (en) | 2011-09-13 | 2011-09-13 | Ignition control device for engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102996316A CN102996316A (en) | 2013-03-27 |
| CN102996316B true CN102996316B (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110276598.3A Expired - Fee Related CN102996316B (en) | 2011-09-13 | 2011-09-13 | Ignition control device for engine |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3978833A (en) * | 1975-06-13 | 1976-09-07 | Chrysler Corporation | Engine control circuit for providing a programmed control function |
| JPS61169667A (en) * | 1985-01-21 | 1986-07-31 | Nippon Denso Co Ltd | Ignition timing control device in internal-combustion engine |
| US4651705A (en) * | 1985-05-10 | 1987-03-24 | Kokusan Denki Co., Ltd. | Ignition system for an internal combustion engine |
| US4870587A (en) * | 1986-11-28 | 1989-09-26 | Honda Giken Kogyo Kabushiki Kaisha | Method of discriminating a stroke of a 4-cycle internal combustion engine |
| CN1043369A (en) * | 1988-12-05 | 1990-06-27 | 褚庆怀 | Ignition advance variation control system of internal combustion engine |
| JPH0893611A (en) * | 1994-09-21 | 1996-04-09 | Nippondenso Co Ltd | Ignition device for internal combustion engine |
| CN1162068A (en) * | 1996-01-26 | 1997-10-15 | 株式会社三叶 | Ignition control system |
| US5775297A (en) * | 1995-11-08 | 1998-07-07 | Sanshin Kogyo Kabushiki Kaisha | Engine operation control system |
| JP2002339847A (en) * | 2001-05-18 | 2002-11-27 | Kokusan Denki Co Ltd | Ignition device for internal combustion engine |
-
2011
- 2011-09-13 CN CN201110276598.3A patent/CN102996316B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3978833A (en) * | 1975-06-13 | 1976-09-07 | Chrysler Corporation | Engine control circuit for providing a programmed control function |
| JPS61169667A (en) * | 1985-01-21 | 1986-07-31 | Nippon Denso Co Ltd | Ignition timing control device in internal-combustion engine |
| US4651705A (en) * | 1985-05-10 | 1987-03-24 | Kokusan Denki Co., Ltd. | Ignition system for an internal combustion engine |
| US4870587A (en) * | 1986-11-28 | 1989-09-26 | Honda Giken Kogyo Kabushiki Kaisha | Method of discriminating a stroke of a 4-cycle internal combustion engine |
| CN1043369A (en) * | 1988-12-05 | 1990-06-27 | 褚庆怀 | Ignition advance variation control system of internal combustion engine |
| JPH0893611A (en) * | 1994-09-21 | 1996-04-09 | Nippondenso Co Ltd | Ignition device for internal combustion engine |
| US5775297A (en) * | 1995-11-08 | 1998-07-07 | Sanshin Kogyo Kabushiki Kaisha | Engine operation control system |
| CN1162068A (en) * | 1996-01-26 | 1997-10-15 | 株式会社三叶 | Ignition control system |
| JP2002339847A (en) * | 2001-05-18 | 2002-11-27 | Kokusan Denki Co Ltd | Ignition device for internal combustion engine |
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| CN102996316A (en) | 2013-03-27 |
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