CN103726969B - Spark is conveyed to the system and method for engine - Google Patents
Spark is conveyed to the system and method for engine Download PDFInfo
- Publication number
- CN103726969B CN103726969B CN201310481316.2A CN201310481316A CN103726969B CN 103726969 B CN103726969 B CN 103726969B CN 201310481316 A CN201310481316 A CN 201310481316A CN 103726969 B CN103726969 B CN 103726969B
- Authority
- CN
- China
- Prior art keywords
- ignition coil
- ignition
- engine
- spark
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
- F02P3/04—Layout of circuits
- F02P3/045—Layout of circuits for control of the dwell or anti dwell time
-
- 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
- F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
- F02P3/04—Layout of circuits
-
- 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
- F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
- F02P3/04—Layout of circuits
- F02P3/045—Layout of circuits for control of the dwell or anti dwell time
- F02P3/0453—Opening or closing the primary coil circuit with semiconductor devices
- F02P3/0456—Opening or closing the primary coil circuit with semiconductor devices using digital techniques
Landscapes
- 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)
Abstract
The invention discloses a kind of system and method for conveying spark to engine.In one example, single conductor conveying indicates the spark signal that the desired spark of multiple ignition coils shifts to an earlier date.The system and method can reduce the routing complexity of spark plug, which supplies energy by two ignition coils.
Description
The cross reference of related application
This application claims the U.S. Provisional Patent Application No.61/714 that on October 15th, 2012 submits, 058 priority,
Entire contents include for reference herein for all purposes.
Technical field
This application involves for conveying spark to the system and method for spark ignition engine.The system and method can be special
It is not beneficial to operate the engine of dilute or diluted mixture.
Background technology
Engine can with dilute air fuel mixture or（For example, passing through exhaust gas recirculatioon（EGR））Diluted air
Fuel mixture operates, to improve engine fuel economy and/or discharge.However, when engine with it is dilute or it is diluted mix
When closing object operation, combustion stability may reduce.The burning for improving the engine operated with dilute air fuel mixture is steady
Qualitatively a kind of method is to increase spark energy.Spark energy can be increased by increasing the inductance of coil, which passes through
Spark plug supplies spark to engine.However, coil charges time, and the line of higher inductance can be increased by increasing coil inductance
Circle may be reduced when the undesirable amount for increasing spark energy（For example, during the burning of stoichiometric mixture）Condition
Under ignition system efficiency.These and other disadvantages of single-coil ignition system can be by via two ignition coil supply fire
Flower overcomes to spark plug.Two ignition coils can charge and/or discharge in different time, with increase spark duration and
Energy, but different time operate two ignition coils for each spark plug may significantly increase controller output and
The quantity of electric wire.Therefore, the system of each spark plug twin coil can improve combustion stability, but may also can increase system
Cost, complexity and assembly time.
Invention content
Inventors have recognized that disadvantages mentioned above, and have studied for providing spark to engine
Method, this method include：Two different ignition coil residence time/residence times are supplied by single conductor（dwell
time）, which is supplied to the first ignition coil and the second ignition coil；With make the first ignition coil
Single spark plug is discharged into the second ignition coil.
By encoding ignition coil order, it is possible to reduce the quantity of conductor in engine igniting system.In an example
In, the ignition coil order of an ignition coil is based on the pulse width more than the first predetermined time.The point of second ignition coil
The order of firewire circle is based on the pulse width less than the second predetermined time.Two different pulse widths can be passed by single conductor
It is defeated, with two ignition coils of operation supply energy to single spark plug.
In another example, the order of the first ignition coil can be by the first conductor propagation, and the second ignition coil
Order can pass through the second conductor propagation.Second conductor can also convey the spark plug in supply energy to other engine cylinders
Other multiple ignition coils order.Therefore, the conductor of conveying ignition coil signal more less than ignition coil can include
Into ignition system.Therefore, ignition system routing complexity can reduce.
In another example, a kind of method for providing spark to engine includes：First is supplied by the first conductor
The ignition coil charging current time is to the first ignition coil；It is arrived by the second conductor the second ignition coil charging current time of supply
Second ignition coil；And the first ignition coil and the second ignition coil is made to be discharged to single spark plug.
In another example, the second conductor also conveys the ignition coil charging current time of multiple engine igniting coils.
In another example, the first ignition coil charging current time and the second ignition coil charging current time with start
Seat in the plane, which is set, synchronously to be supplied.
In another example, this method further comprises, in response to engine operating condition, stopping the second ignition coil of supply and filling
Electric current time is to the second ignition coil.
In another example, engine operating condition is less than the engine EGR amount of threshold engine EGR amount.
In another example, engine operating condition is the engine air-fuel ratio richer than threshold value air-fuel ratio.
In another example, the system for supplying spark to engine includes：First ignition coil predriver electricity
Road；The interpretation logic being electrically connected with the first ignition coil pre-driver circuit, the interpretation logic include that two ignition coils drive
Dynamic device output；And two ignition coil drive circuits being electrically connected with interpretation logic.
In another example, which further comprises two be electrically connected with two ignition coil drive circuits igniting
Coil.
In another example, which further comprises the second ignition coil predriver being electrically connected with interpretation logic
Circuit.
In another example, the interpretation logic of the second ignition coil pre-driver circuit and multiple engine cylinders is electrically connected
It is logical.
In another example, the first ignition coil pre-driver circuit only with multiple ignition coil drive circuits one
A ignition coil drive circuit is electrically connected.
This specification can provide several advantages.Specifically, this method reduce ignition system routing complexities.In addition, should
Method can reduce ignition system assembly time.In addition, this method can reduce ignition system cost.
When individually or jointly attached drawing considers, from the point of view of following specific implementation mode, the above-mentioned advantage of this specification
It will be apparent with other advantages and feature.
It is further retouched in a specific embodiment it should be understood that providing foregoing invention content and introducing in simplified form
The series of concepts stated.It is not intended that determining the key or essential characteristic of theme claimed, master claimed
The range of topic is uniquely limited by the appended claims.In addition, theme claimed be not limited to solve above or
The embodiment for any disadvantage mentioned in any part of the disclosure.
Description of the drawings
When individually or with reference to attached drawing considering, the exemplary example that specific implementation mode is referred to herein as by reading will
Advantages described herein is more fully understood, wherein：
Fig. 1 is the schematic diagram of engine；
Fig. 2 is the schematic diagram of the ignition system of the prior art；
Fig. 3 shows the illustrative diagram of the first ignition system；
Fig. 4 shows the illustrative diagram of the second interchangeable ignition system；
Fig. 5 shows supply of electrical energy to the example signal of the single ignition coil of spark plug；
Fig. 6 shows supply of electrical energy to the example signal of two ignition coils of spark plug；
Fig. 7 shows the example control system of the first ignition system；
Fig. 8 shows the example control system of the interchangeable second replaceable ignition system；With
Fig. 9 is the flow chart for the exemplary method of supply of electrical energy to spark plug.
Specific implementation mode
This specification is related to supplying energy to the spark plug of spark ignition engine.In a non-limiting example, it controls
Signal processed is supplied by individual wires.Two coils can be operated in different time respectively in response to the control signal.Therefore, generation
For supply control signal to two electric wires of two ignition coils, identical function can be executed using individual wires.With this
Mode, it is possible to reduce the quantity of controller output.In addition, compared with other multi-coil systems, can in the system use compared with
Few electric wire.Fig. 1, Fig. 3 and Fig. 4 show example ignition system.Fig. 2 shows the ignition systems of the prior art.Fig. 1, Fig. 3 and Fig. 4
System spark energy shown in Fig. 5 and Fig. 6 can be provided.Fig. 7 and Fig. 8 shows example igniting system control signal.Finally, scheme
9 show a kind of exemplary method by two ignition coils supply energy to single spark plug.
Referring to Fig.1, internal combustion engine 10 is controlled by electronic engine control 12, which includes multiple vapour
Cylinder, a cylinder in multiple cylinder are shown in Figure 1.Engine 10 includes combustion chamber 30 and cylinder wall 32, and piston 36 is located at
Wherein and it is connected to bent axle 40.Combustion chamber 30 is shown pass through respective inlet valve 52 and exhaust valve 54 and inlet manifold 44 and row
Gas manifold 48 is connected to.Each inlet valve and exhaust valve can be operated by admission cam 51 and exhaust cam 53.Adjustable air inlet is convex
The position of wheel 51 can be determined by admission cam sensor 55.The position of adjustable exhaust cam 53 can be sensed by exhaust cam
Device 57 determines.
Fuel injector 66 is shown to be positioned as injecting fuel directly into cylinder 30, this is by those skilled in the art
Member is known as directly injection.Alternatively, fuel can be injected into air inlet, this by those skilled in the art be known as into
Gas-duct jetting.The pulse width of fuel injector 66 and the signal FPW from controller 12 proportionally transporting liquid fuel.Combustion
Material is by including fuel tank, petrolift and fuel rail（It is not shown）Fuel system（It is not shown）It is transported to fuel injector 66.
The operation electric current of the driver 68 from response controller 12 is supplied in fuel injector 66.In addition, inlet manifold 44 is shown
Be connected to optional electronic throttle 62, the electronic throttle 62 adjustment choke block 64 position with control from air inlet 42 into
The air stream of gas manifold 44.
Distributorless ignition system 88 provides pilot spark to combustion chamber 30 in response to controller 12, by spark plug 92.
General or wide area is vented oxygen（UEGO）Sensor 126 is shown connect to the exhaust manifold 48 of the upstream of catalyst 70.It can
Alternatively, bifurcation exhaust gas oxygen sensor can replace UEGO sensor 126.
In one example, converter 70 may include multiple catalyst bricks.In another example, multiple rows can be used
Control device is put, wherein each has multiple bricks.In one example, converter 70 can be three-way catalyst.
Controller 12 is illustrated as normal miniature computer in Fig. 1 comprising：Microprocessor unit（CPU）102, defeated
Enter/output port（I/O）104, read-only memory（ROM）106, random access memory（RAM）108, keep-alive memory（KAM）
110 and conventional data bus.Controller 12 is shown to receive the various signals from the sensor for being connected to engine 10, removes
Before those of discuss other than signal, further include：Engine from the temperature sensor 112 for being connected to cooling cover 114
Coolant temperature（ECT）；It is connected to the position sensor 134 of accelerator pedal 130, for sensing the power applied by foot 132；Come
From the engine manifold pressure for the pressure sensor 122 for being connected to inlet manifold 44（MAP）Measured value；Carry out self-inductance measurement bent axle 40
Position hall effect sensor 118 engine position sensor；The air matter into engine from sensor 120
The measured value of amount；With the measured value of the throttle position from sensor 58.Atmospheric pressure can also be sensed（Sensor does not show
Go out）For being handled by controller 12.In the one side of this specification, every turn in bent axle of engine position sensor 118
The pulse at equal intervals for generating predetermined quantity, can determine therefrom that engine speed（RPM）.
In some instances, which may be coupled to the electric motor/battery system in hybrid vehicle.The mixing
Power car can have parallel configuration, arranged in series or its variant or combination.In addition, in some instances, may be used
Other engine configurations, for example, the engine can be by turbocharging or engine driven supercharging.
In operation, each cylinder in engine 10 is usually subjected to four stroke cycles：The cycle include into
Gas stroke, compression travel, expansion stroke and instroke.Usually, in suction stroke, exhaust valve 54 is closed and inlet valve
52 open.Air is introduced into combustion chamber 30 by inlet manifold 44, and piston 36 is moved to the bottom of cylinder, to increase combustion
Burn the volume in room 30.Piston 36 close to cylinder foot and in its stroke latter stage（For example, when combustion chamber 30 is in it most
When big volume）Position be usually referred to by those skilled in the art as lower dead center（BDC）.In compression travel, 52 He of inlet valve
Exhaust valve 54 is closed.Piston 36 is moved towards cylinder cover, so as to the air in compression and combustion room 30.Piston 36 is in its stroke end
Phase and closest to cylinder cover（For example, when combustion chamber 30 is in its minimum volume）Point usually by those skilled in the art
Referred to as top dead centre（TDC）.During referred to below as spraying, fuel is introduced into combustion chamber.In referred to below as igniting
In the process, the fuel sprayed is lighted by the known igniter of such as spark plug 92, so as to cause burning.In expansion stroke
In, the gas push piston 36 of expansion returns to BDC.Bent axle 40 converts piston movement into the rotation torque of rotary shaft.Finally,
In instroke, exhaust valve 54 is opened, and with the air fuel mixture of release burning to exhaust manifold 48, and the piston returns
Return to TDC.It should be noted that above-mentioned be only shown as example, and inlet valve and exhaust valve are opened and/or closure timings can
To change, for example, with the IC Intake Valve Closes for providing positive or negative valve overlap, delay or various other examples.
Fig. 2 is the schematic diagram of the ignition system of example prior-art.In this example, controller 12 includes two igniting
Coil pre-driver circuit 280 and 282, each ignition coil one, the ignition coil can be operable for electric energy to list
The spark plug of a cylinder.Two ignition coil pre-driver circuits 280 and 282 supply low-level electric current and are driven to ignition coil
Device 202 and 204.Ignition coil driver 202 and 204, which is included in, can be arranged in the top of spark plug 92 or neighbouring igniting system
In system 88.First ignition coil pre-driver circuit 280 can supply signal to the first ignition coil driver 202.First
Ignition coil 206 supplies electric current optionally through first coil driver 202.Electrical energy storage device 220 is to the first ignition lead
Circle 206 provides electric current.Similarly, the second ignition coil pre-driver circuit 282 can supply signal to the second ignition coil
Driver 204.Second ignition coil 208 supplies electric current optionally through the second coil actuator 204.Electrical energy storage device
220 provide electric current to the second ignition coil 208.
Spark plug 92 can be supplied to electric energy from the first ignition coil 206 and/or the second ignition coil 208.Spark plug 92
Including first electrode 260 and second electrode 262.Second electrode 262 can continuously be electrically connected with ground 240.When potential difference exists
When between first electrode 260 and second electrode 262, spark can be generated across gap 250.
Two different signals of system requirements of Fig. 2 and two individual electric wires or conductor 241 and 242, to operate first
Ignition coil 206 and the second ignition coil 208.In addition, ignition system shown in Figure 2 shows that one kind being used for single cylinder motor
System.For the engine cylinder additional more than each of cylinder as shown in the figure, energy storage device 220 and ground 240 are removed
Outside, it is necessary to which each element of Fig. 2 is provided.Therefore, the system requirements of Fig. 2 is used for the predriver and electricity of each second coil
Line, to make the wiring of the ignition system of each spark plug list ignition coil double.
Referring now to Fig. 3, it illustrates the examples of the first interchangeable ignition system.The ignition system of Fig. 3 includes Fig. 2's
Some identical elements shown in system.Have with those identical elements shown in Fig. 2 in Fig. 3 and shown in Fig. 2 and retouches
The identical reference numeral of element stated.
In such a system, controller 12 includes for supplying control signal to the first ignition coil 206 and the second ignition lead
The single igniting pre-driver circuit of circle 208.Under conditions of engine includes N number of cylinder, N number of ignition coil pre-driver
Device circuit provides control signal for ignition coil.The output of pre-driver circuit 280 is directed into interpretation logic 302.It explains
Logic 302 may include in programmable logic array, as being incorporated into central processing unit or application-specific integrated circuit（ASIC）'s
A part for logic.Interpretation logic 302 monitors timing and the level for the signal that pre-driver circuit 280 provides.It is non-at one
In limitative examples, what the timing of the signal provided by pre-driver circuit 280 can be as depicted in figure 7.For example, when control
When the pulse width of signal processed was longer than for the first predetermined time, interpretation logic 302 changes the letter for being supplied to ignition coil driver 202
Number state.When the pulse width for controlling signal was less than for the second predetermined time, interpretation logic change is supplied to ignition coil drive
The state of the signal of dynamic device 204.Interpretation logic 302 can export individual signal to ignition coil driver 202 and 204.By
The signal that interpretation logic 302 is supplied to ignition coil driver 202 and 204 is lighted a fire with by the first ignition coil 206 and second
The cylinder trip that coil 208 supplies the cylinder of spark synchronizes.In one example, from the first ignition coil 206 and/or second
Ignition coil 208 provides at least one spark during receiving each of cylinder of spark cycle.For example, in the cylinder for receiving spark
Compression travel in, one time cylinder cycle can supply spark.In addition, in one example, the first ignition coil 206 has
The inductance different from the second ignition coil 208.
Referring now to Fig. 4, it illustrates the examples of the second interchangeable ignition system.The ignition system of Fig. 4 includes Fig. 2's
Some identical elements shown in system.In Fig. 4 with those identical elements shown in Fig. 2 have with shown in Fig. 2 and
The identical reference numeral of element of description.
Similar to the system of Fig. 2, Fig. 4 shows there is the first pre-driver circuit 280 and the second pre-driver circuit
282 controller.The system of Fig. 4 and Fig. 2 is the difference is that the system of Fig. 4 includes interpretation logic 402.In addition, before second
Set driver circuit 282 not only supplies coil control signal to interpretation logic 402, is used for operating the second ignition coil 208, and
And pre-driver circuit 282 also supplies signal to the n-th cylinder in the engine cylinder sum such as indicated at 403-405
Interpretation logic.Conductor 441 conveys the signal for indicating when to make the first ignition coil 206 to be charged and discharged.Conductor 442 is defeated
It send and indicates when to make the second ignition coil 208 and the second point by other engine cylinders of each of 411-413 expressions
The signal that firewire circle is charged and discharged.In this way, only offer one drives use from the additional wire 442 of controller 12
In the second ignition coil 411-413 of each engine cylinder.For driving each second point from other engine cylinders
The signal of firewire circle is provided by the second pre-driver circuit 282 and conductor 442.
In this example, interpretation logic 402 provides control signal to the first ignition coil drive circuit 202 and second point
Fiery coil driver circuitry 204.By selecting a pulse as operation second from multiple pulses during cycle of engine
The basis of ignition coil drive circuit 204, interpretation logic 402 provide control signal to the second ignition coil drive circuit
204.First ignition coil of other cylinders of each of engine（It is not shown）It is all supplied to from the pre-driver similar to 280
The control signal of device circuit.
Therefore, the system of Fig. 1, Fig. 3 and Fig. 4 provide supply spark to engine comprising：The preposition drive of first ignition coil
Dynamic device circuit；The interpretation logic being electrically connected with the first ignition coil pre-driver circuit, the interpretation logic include two igniting
Coil actuator exports；With two ignition coil drive circuits being electrically connected with interpretation logic.The system further comprise with
Two ignition coils that two ignition coil drive circuits are electrically connected.What the system further comprised being electrically connected with interpretation logic
Second ignition coil pre-driver circuit.The system include wherein the second ignition coil pre-driver circuit be used for it is multiple
The interpretation logic of engine cylinder is electrically connected.The system include wherein the first ignition coil pre-driver circuit only with multiple points
One ignition coil drive circuit of fiery coil driver circuitry is electrically connected.
Referring now to Fig. 5, it illustrates the example signals of the single ignition coil of supply of electrical energy to spark plug.The signal
The system shown in Fig. 3 or Fig. 4 provides.When only the first ignition coil 206 or the second ignition coil 208 are followed in cylinder
When providing energy during ring for spark, another ignition coil does not receive the signal of charge or discharge.Vertical marker T0-T2It indicates
The interested moment during the sequence.
Indicate that the ignition coil of the first ignition coil 206 or the second ignition coil 208 fills from first figure at the top of Fig. 5
Electric current and time.Y-axis indicates ignition coil charging current, and ignition coil charging current increases along the direction of Y-axis arrow.
X-axis indicates the time, and the time increases along the direction of X-axis arrow.
Indicate that the ignition coil of the first ignition coil 206 or the second ignition coil 208 is put from second figure at the top of Fig. 5
Electric current and time.Y-axis indicates ignition coil discharge current, and ignition coil discharge current increases along the direction of Y-axis arrow.
X-axis indicates the time, and the time increases along the direction of X-axis arrow.
In moment T0, which neither charges, does not also discharge.For example, in the air inlet or the row that receive the cylinder of spark
During gas stroke, ignition coil can not charge or discharge.
In moment T1, in response to the desired spark timing based on engine speed and load, electric current starts in primary side
Flow into ignition coil.When turning off the switch or driver is to allow electric current to flow to the ignition coil from energy source, electric current can flow
Enter in the ignition coil.In one example, ignition coil driver 202 comes from interpretation logic 302 shown in Fig. 3 in reception
Order after close.In another example, ignition coil driver 202 comes from interpretation logic 402 shown in Fig. 4 in reception
Order after close.
In moment T2, desired spark timing in response to the secondary side discharge that causes the ignition coil and in ignition coil
Induced current flow between spark plug, the electric current flowing to the primary side of the ignition coil stop.Ignition coil current with
It the increase of time and declines.In one example, in response to the order of the interpretation logic 302 shown in Fig. 3, ignition lead
Driver 202 is enclosed in moment T2It opens.In another example, in response to the order of the interpretation logic 402 shown in Fig. 4,
Ignition coil driver 202 is in moment T2It opens.
Therefore, Fig. 5 shows the example of the circuit for Fig. 3 and Fig. 4 when operating single ignition coil in the circuit
Ignition coil signal.Such operation can be similar to the behaviour of the ignition coil in the monocoil ignition system of each spark plug
Make.
Referring now to Fig. 6, it illustrates the example signals of two ignition coils of supply of electrical energy to spark plug.The signal
The system shown in Fig. 3 or Fig. 4 provides.Fig. 6 shows the first ignition coil 206 and the second ignition coil 208 in cylinder
In cyclic process energy is provided for spark.Vertical marker T5-T9Indicate the interested moment during the sequence.
Indicate that supply of electrical energy charges to the ignition coil of the first ignition coil of spark plug from first figure at the top of Fig. 6
Electric current and time.First ignition coil can be ignition coil 206 shown in Fig. 3 and Fig. 4.Y-axis indicates ignition coil charging
Electric current, and ignition coil charging current increases along the direction of Y-axis arrow.X-axis indicates the time, and the time is along X-axis arrow
Direction increases.
Indicate that supply of electrical energy charges to the ignition coil of the second ignition coil of spark plug from second figure at the top of Fig. 6
Electric current and time.Second ignition coil can be ignition coil 208 shown in Fig. 3 and Fig. 4.Y-axis indicates ignition coil charging
Electric current, and ignition coil charging current increases along the direction of Y-axis arrow.X-axis indicates the time, and the time is along X-axis arrow
Direction increases.
From the third at the top of Fig. 6 figure indicate ignition coil discharge current from the first and second ignition coils and when
Between.Y-axis indicates ignition coil discharge current, and ignition coil discharge current increases along the direction of Y-axis arrow.When X-axis indicates
Between, and the time is along the increase of the direction of X-axis arrow.
In moment T5, ignition coil neither charges, also do not discharge.For example, in the air inlet or exhaust of the cylinder for receiving spark
During stroke, ignition coil can not charge or discharge.
In moment T6, in response to the expectation spark timing based on engine speed, load and engine dilution, electric current starts
It is flowed into the first ignition coil in primary side.When turning off the switch or driver is to allow electric current to flow to the first ignition lead from energy source
When circle, electric current can flow into the first ignition coil.In one example, ignition coil driver 202 is receiving in Fig. 3
Shown in interpretation logic 302 order after close.In another example, ignition coil driver 202 is receiving in Fig. 4
Shown in interpretation logic 402 order after close.
In moment T7, in response to being based on engine speed, load and the diluted expectation spark timing of air inlet aerating mixture,
Electric current starts to flow into the second ignition coil in primary side.When turning off the switch or driver is to allow electric current to flow to from energy source
When two ignition coils, electric current can flow into the second ignition coil.In one example, ignition coil driver 204 is receiving
It is closed after the order of interpretation logic 302 shown in Fig. 3.In another example, ignition coil driver 204 is receiving
It is closed after the order of interpretation logic 402 shown in Fig. 4.
In moment T8, expectation spark timing in response to the secondary side discharge that causes the first ignition coil and in ignition coil
Induced current flow between spark plug, the electric current flowing to the primary side of the first ignition coil stop.First ignition coil
Electric current declines as time increases.In one example, in response to the order of the interpretation logic 302 shown in Fig. 3,
Ignition coil driver 202 is in moment T8It opens.In another example, in response to the interpretation logic 402 shown in Fig. 4
Order, ignition coil driver 202 is in moment T8It opens.
In moment T9, expectation spark timing in response to the secondary side discharge that causes the second ignition coil and in ignition coil
Induced current flow between spark plug, the electric current flowing to the primary side of the second ignition coil stop.Second ignition coil
Electric current support/enhancing（bolster）Electric current from the first ignition coil, to extend spark duration and spark energy.
In one example, in response to the order of the interpretation logic 302 shown in Fig. 3, ignition coil driver 204 is in moment T9
It opens.In another example, in response to the order of the interpretation logic 402 shown in Fig. 4, ignition coil driver 202 exists
Moment T9It opens.
Therefore, Fig. 6 shows the example ignition coil of the circuit of Fig. 3 and Fig. 4 when operating two ignition coils in circuit
Signal.In this way, spark duration and energy can increase, to improve the burning in dilute or dilution operation cylinder
Stability.
Referring now to Fig. 7, the figure shows the ignition systems in single-cylinder cyclic process including two ignition coils（Example
Such as, the system of Fig. 3）Control signal.The signal indicates that control provides spark to single cylinder（For example, the cylinder that number is 1）
Two coils signal.Shown in signal be a part for cycle of engine, and similar control signal is each
The output of cylinder cycle.When with the signal of those shown other similar engine cylinders also difference during cycle of engine
Between（For example, during the compression travel of each cylinder of the engine）It is provided by single ignition control signal.The signal of Fig. 7
It can be generated by the system of Fig. 1 and Fig. 3 according to the method for Fig. 9.Vertical marker T20-T27Expression especially feels emerging during the sequence
At the time of interesting.
Indicate that single ignition coil controls signal from first figure at the top of Fig. 7, which controls signal
It is to operate supply of electrical energy to the basis of the first and second ignition coils of single spark plug.The ignition coil control signal in response to
Engine combustion mode in engine speed, engine load, its dependent variable（For example, dilute or dilution）And change state.Example
Such as, 704, the bold portion of ignition coil control signal traces is shown for operating single igniting during cylinder cycle
One example ignition coil of coil controls signal.For example, in 702 and 712, the dotted portion of the trace is shown in vapour
The ignition coil of two ignition coils of operation and the multiple sparks of offer controls signal during cylinder recycles.
The first ignition coil charging current is indicated from second figure at the top of Fig. 7.The charging current flows into the first igniting
Primary coil in coil.Residence time is the time quantum that charging current flows into the ignition coil.When charging current flows into the
When in one ignition coil, power storage is in supplying first ignition coil of the energy to two ignition coils of spark plug.Storage
The amount of energy in the first ignition coil is as charging current is moved along the direction of Y-axis arrow and is increased.When the first charging electricity
When stream is in the reduced levels near X-axis, the first ignition coil does not charge.For example, at 720, solid line indicates to work as from the top of Fig. 7
Coil control signal in first figure in portion is in solid line（Such as 704）Timing at when first coil charging current.
For example, dotted line indicates to be in for example at 712 when from the coil control signal in first figure at the top of Fig. 7 at 726
The interchangeable first ignition coil charging current generated when at the timing of dotted line.
The second ignition coil charging current is illustrated from the third at the top of Fig. 7.When the second coil charges electric current
When increase, the second ignition coil of supply energy to two ignition coils of single spark plug is charging.When the second ignition lead
Charging current signal is enclosed when increasing along the direction of Y-axis arrow, the charging of the second ignition coil increases.When the second ignition coil charges
When current signal is in the reduced levels near X-axis, the second ignition coil does not charge.Dotted line 730,732 and 734 indicates can
The alternatively ignition coil retention signal timing by being provided from the control signal in first figure at the top of Fig. 7.
The potential mode of operation of the first and second ignition coils is indicated from the 4th figure at the top of Fig. 7.According to state table
750, which corresponds to the operation of the first and second ignition coils.For example, in the state that number is 2, only second point
Firewire circle is charging.In the state that number is 3, the first and second ignition coils are all charging.
In moment T20, the first ignition coil charging current and the second ignition coil charging current be in low-level, instruction the
One and second ignition coil do not charging.The ignition coil state is also at " 0 " value, and the first and second ignition coils of instruction do not exist
Charging.Ignition coil control signal is also at low-level, and instruction coil is not command by charging.
In moment T20With moment T21Between, short duration pulse can be provided, as shown in the dotted line at 702.One
In a example, it is less than predetermined threshold when the high-level duration that ignition coil controls the pulse of signal（For example, being less than 75 μ s）
When, ignition coil controls signal command the second ignition coil charging current and increases, and to make the second ignition coil charge, such as exists
At 730 and moment T21It is shown.Short duration ignition coil control signal passes through the explanation as shown in figure 3 302
Logic is converted to the second ignition coil charging current.Ignition coil control signal be in high level be less than predetermined time amount it
After be converted into after low-level, the second ignition coil charging current increases predetermined time amount at 730.Ignition coil state when
Carve T21Become 0 and 2 from 0.Second ignition coil can also increase, and as shown in 732, be charged with providing longer ignition coil
Duration.Therefore, if ignition coil control signal includes the pulse as shown in 702, ignition coil state is
One is 2 value, is indicated in moment T21With moment T22Between time during only the second ignition coil can be activation.
In moment T22Shortly before, ignition coil control signal is converted into high level, and rests on the high level at 704
It is longer than predetermined time amount（For example, more than 150 μ s）, instruction passes through such as opening the by making the charging of the first ignition coil shown in 720
One ignition coil.Predetermined time amount after ignition coil control signal is converted into higher level at 704, the first ignition lead
Circle charging current is initially increased in moment T22Higher level, instruction the first ignition coil charging.In 704 and moment
T22Between delay time allow interpretation logic to determine that be the first ignition coil or the second ignition coil should charge.It may
Ignition coil state be denoted as 1,2 and 3.If only longer duration pulse is provided by ignition coil control signal, only
Operate ignition coil 1.If if not providing longer duration pulse and compared with short duration pulse 702 or 706 by lighting a fire
Coil control signal provides, then only operates the second ignition coil.If the longer and shorter pulse duration is all by ignition coil
It controls signal to provide, then operates both first and second ignition coils.
If pulse 702 is not output and if longer duration ignition coil control pulses are as shown in 706
Relatively short duration ignition coil control pulses after, then the second ignition coil charging current increases and opens, such as in 734 Hes
Moment T23It is shown.Therefore, no matter from low-level it is converted into high level, or vice versa, short duration control signal pulse
Operation is to change the state of the second ignition coil charging current.In this way, ignition coil control signal output can be explained
For the individual signals for two ignition coils stops or the order of ignition coil charging signals.Additionally it should should be mentioned that, such as
Fruit provides the short pulse width as shown in 702, then the second ignition coil is opened before the first ignition coil starts to charge up
Begin to charge.If not providing the short pulse width as shown in 702, but the short pulse provided as shown in 706 is wide
Degree, then the second ignition coil starts to charge up after the first ignition coil starts to charge up.Additionally it should should be mentioned that, if carried
For such as two short pulses at 702 and shown in 706, then short pulse 706 is used for ordering the stopping of the second ignition coil to fill
Electricity, as indicated by the second ignition coil charging current 730.In this way, ignition coil 2 can be put before ignition coil 1
Electricity, and the timing between ignition coil charging and discharging can change.
708, ignition coil control signal is converted into low state, and instruction the first ignition coil of order stops charging.First
Ignition coil charging current is in 724 and moment T24It is converted into low state, is the pre- timing for the time for being later than the conversion at 708
The area of a room.Moment T23With moment T24Between available ignition lead round state based on the possible ignition coil arteries and veins for being denoted as 1,2 and 3
The combination of punching.
In pulse 710, ignition coil control signal can be simply converted into higher state, to indicate the second ignition coil
It will stop receiving charging by the second charging current.Moment T24With moment T25Between possible ignition coil state be denoted as 0
With 2.Terminate to change the to charge relative to the first ignition coil it should also be mentioned that the timing of pulse 710 can be adjusted
The charging of two ignition coils terminates.
712, ignition control signal can be converted high state, to indicate that the first ignition coil will be in cylinder cycle
Between second charge.In moment T26Slower predetermined time amount, the first ignition coil charging current increases to higher level, with root
Second of the charging during cylinder cycle of the first ignition coil of signal designation is controlled according to the ignition coil 712.Moment T25And when
Carve T26Between possible ignition coil state be state 0.
It 714, shows when the first ignition coil operates twice during single cylinder cycle, ignition control signal turns
Change reduced levels into.In moment T27Slower predetermined time amount, the first ignition coil charging current are converted into relatively low water at 728
It is flat.It is the first igniting charging current that predetermined time amount after the conversion that ignition coil controls signal, which allows interpretation logic to determine,
Or the second igniting charging current should change state.
Therefore, ignition control signal is individual signals, which can provide shorter duration signal level variation,
To encode the state change of the second ignition coil charging current, and identical signal provides longer duration signal level,
To encode the state change of the first ignition coil charging current.It is to allow to explain to keep ignition coil state of a control predetermined time amount
The basis of the charging current of the logic determination selected ignition coil to be adjusted.
Because the state of the second ignition coil is by the memory Partial controll in the interpretation logic 302 of Fig. 3（It should be noted that
It is that the short duration pulse from controller 12 is handoff functionality）, special precautionary measures can be taken to avoid and control
Desired state loses synchronization in device processed.These precautionary measures may include that the mistake of reset the second ignition coil to closed state is stopped
Stay protection（over dwell protection）.Precautionary measures may include but be not necessarily limited to：Electrification reset/power on reset
（power-on reset）（Electric power resets when being applied to ignition module）, overcurrent reset（Sensing the first of the second ignition coil
Grade electric current resets when being more than predetermined limit）It is resetted with the igniting residence time is spent（It is more than predetermined determining that ignition coil 2 has already turned on
It is resetted when time quantum）.
Referring now to Fig. 8, it illustrates for interchangeable second ignition system（For example, the system of Fig. 4）Example control
Signal processed.The signal indicates that control provides spark to single cylinder（For example, the cylinder that number is 1）Two coils signal.
Other engine cylinders（It is not shown）Signal with it is those of shown similar.In addition, passing through n-th ignition coil signal and public
Ignition control signal provides the signal of other engine cylinders.Compared with signal shown in fig. 8, during cycle of engine,
The signal of other engine cylinders is provided in different time.The signal of Fig. 8 can be according to the method for Fig. 9 by the system of Fig. 1 and Fig. 4
It generates, and represents single-cylinder cycle.Vertical marker T30-T37Indicate the moment of special interest during the sequence.
Illustrated from first of the top of Fig. 8 is for operating supply of electrical energy to first and second points of single spark plug
A signal in two ignition coils control signal on the basis of firewire circle.Ignition coil in response to engine speed, start
Machine load, engine combustion mode（For example, dilute or dilution）Signal intensity state is controlled Deng its dependent variable.Such as at 804
The bold portion of ignition control signal trace the ignition coil for operating single ignition coil during cylinder cycle is shown
Control signal.Such as the dotted portion of the trace at 808 shows the igniting for providing multiple sparks during cylinder cycle
Coil control signal.
It is the second ignition coil for operating supply of electrical energy to single spark plug to be illustrated from second of the top of Fig. 8
Basis two ignition coils control signal in second signal.Second ignition coil controls signal and turns in response to engine
Speed, engine load, engine combustion mode（For example, dilute or dilution）Change state Deng its dependent variable.Dotted line signal（Example
Such as, 812-816）Show that the control signal of the second coil can be converted into high state from low state（Vice versa）Difference when
Between.In addition, the second ignition coil control signal is in the conductor for being routed to the second ignition coil of each of each engine cylinder
Upper conveying.
The first ignition coil charging current is illustrated from the third at the top of Fig. 8.When the first ignition coil charging current
When increasing, the first ignition coil of supply energy to two ignition coils of spark plug is charging.When the first ignition coil fills
When electric current is moved along the direction of Y-axis arrow, the charging of the first ignition coil is increasing.When the first ignition coil charging current is in X
When near axis, the first ignition coil is not charging.Such as the solid line at 820 is indicated from first figure at the top of Fig. 8
Coil control signal be in the first igniting charging current generated when the timing of solid line for example at 804.Such as at 824
Dotted line indicate when the timing for being in dotted line for example at 808 from the coil control signal in first figure at the top of Fig. 8
When the interchangeable first ignition coil charging current that generates.
The second ignition coil charging current is illustrated from the 4th of the top of Fig. 8.When the second ignition coil charging current
When increasing, the second ignition coil of supply energy to two ignition coils of single spark plug is charging.When the second ignition lead
Charging current is enclosed along the direction of Y-axis arrow when increasing, the charging of the second ignition coil is increasing.When the second ignition coil charging electricity
When stream is in the reduced levels near X-axis, the second ignition coil is not charging.The expression of dotted line 830,832 and 834 can be replaceable
Ground is by the ignition coil charging current signal timing from the control signal offer in second figure at the top of Fig. 8.
The potential mode of operation of the first and second ignition coils is indicated from the 5th figure at the top of Fig. 8.According to state table
850, mode of operation corresponds to the operation of the first and second ignition coils.For example, in the state of number 2, only the second ignition lead
Circle is charging.In the state of number 3, the first and second ignition coils are all charging.
In moment T30, the first ignition coil charging current and the second ignition coil charging current be in low-level, instruction the
One and second ignition coil do not charging.Ignition coil state is also at " 0 " value, and the first and second ignition coils of instruction are not filling
Electricity.Ignition coil control signal is also at low-level, and instruction coil is not command by charging.
Only in moment T31Before, show that public the second ignition coil control signal is converted into higher level at 812, and
And show that the first ignition coil control signal is converted into higher level threshold amount of time at 802（For example, being more than 75 μ s）.When
When one ignition coil control signal and the second ignition control signal are in higher level up to threshold amount of time, the second ignition coil fills
Electric current starts to increase.Predetermined time amount after two coil control signals are height, in response at 802 and at 812
Conversion, the second ignition coil charging current start to increase at 830.Ignition coil state is in moment T31Become 0 and 2 from 0.Cause
This, if ignition coil control signal includes such as the pulse at 802 and shown in 812, ignition coil state be 2
Value is indicated in moment T31With moment T32Between time during only the second ignition coil can be activation.
In moment T32Shortly before, in response to desired spark timing, the first ignition coil control signal is converted at 804
At high level, and high-level place is rested on, instruction opens first by the first ignition coil charging current of increase at 820
Ignition coil.Predetermined time amount after the first ignition coil control signal is converted into higher level at 804, the first ignition lead
Charging current is enclosed at 820 and moment T32It is converted into higher level, the ignition coil that instruction number is 1 is charging.It is possible
Ignition coil state is denoted as 1,2 and 3.
At 814, show that the second ignition coil control signal can be converted into high state or from high state from low state
It is converted into the replaceable time of low state.If being converted into high state from low state, the second ignition coil charging current is at 834
With moment T33Increase to higher state.If being converted into low state from high state, in response to desired engine spark timing,
Two ignition coil charging currents drop to from higher state compared with low state.In moment T33With moment T34Between available igniting
Combination of the coil state based on possible ignition coil pulse, and it is denoted as 1,2 and 3.
806, show that the first ignition coil control signal is converted into relatively low water in response to desired engine spark timing
It is flat.In moment T34Soon later, as shown in 822, the first ignition coil charging current drops to reduced levels from higher level,
To indicate that the first ignition coil does not recharge.In moment T34With moment T35Between possible ignition coil state be denoted as 0 He
2。
816, show that the second ignition coil control signal turns in response to desired engine spark timing from higher level
Change reduced levels into.Second ignition coil charging current controls signal also in moment T in response to the second ignition coil35From compared with Gao Shui
Flat turn changes reduced levels into.Second ignition coil retention signal indicates that the second ignition coil does not recharge.In moment T35And the moment
T36Between possible ignition coil state be state 0.
808, show that the first ignition coil control signal is converted into response to desired engine spark timing compared with Gao Shui
It is flat.In moment T36Predetermined time amount later, the first ignition coil charging current increase to higher level 824.With this side
Formula can adjust the charging current signal of the first ignition coil to higher level, to be carried for the second spark at spark plug
For energy.In moment T36With moment T37Between, ignition coil may be at state 0 or state 1.
Reduced levels are converted into 810, first ignition coil signals, to indicate that the charging of the first ignition coil will stop.
First ignition coil charging current signal is in 826 and moment T37It is converted into reduced levels soon later.Ignition coil state when
Carve T37It is in the value for 0 afterwards.
Therefore, two ignition control signals control two ignition coils of single cylinder.In addition, two ignition control signals
In a signal be directed into other engine cylinders, so as to control engine remaining cylinder the second coil.In addition, figure
7 and timing shown in fig. 8 it is solely for the purpose of illustration, be not interpreted as limiting the range or width of this specification.
It is also to be noted that the first ignition coil can be by making electric current stop after the first ignition coil starts to charge up
Fluid stopping is discharged to the first ignition coil.Similarly, the second ignition coil can be by starting to fill in the second ignition coil
Electric current stopping is set to flow to the second ignition coil and discharge after electricity.Therefore, the charging and discharging of respective ignition coil pass through
It is supplied to the current control of ignition coil.
Referring now to Fig. 9, it illustrates a kind of methods of supply of electrical energy to spark plug.The method of Fig. 9 can be stored in Fig. 1
Shown in controller 12 non-transitory memory in be used as executable instruction.In addition, the method for Fig. 9 can be applied to Fig. 1,
The system of Fig. 3 and Fig. 4, to provide the sequence in Fig. 5-8.
In step 902, method 900 determines engine operating condition.Engine operating condition may include but be not limited to engine turn
Speed, engine load, engine air-fuel ratio, engine EGR amount and the time from engine start.It is determined in engine operating condition
Afterwards, method 900 proceeds to step 904.
In step 904, method 900 judges whether the engine is operated with dilute or dilution mode.In one example, method
900 judge that engine is operated with dilute pattern according to engine air-fuel ratio.In another example, when engine EGR amount is more than threshold value
When amount, method 900 judges that engine operates under diluting condition.If method 900 judges engine in dilute or dilution operation, side
Method 900 proceeds to step 914.Otherwise, method 900 proceeds to step 906.If the engine does not have dilute or dilution operation, only
Energy from single ignition coil can be supplied to spark plug during cylinder cycle.If the engine is dilute or dilution behaviour
Make, the energy from two ignition coils can be supplied to spark plug during cylinder cycle.
In step 906, method 900 determines desired spark timing and spark energy, to be transported to the list of engine cylinder
A spark plug.In one example, engine spark is empirically determined and is stored in through engine speed and load rope in advance
In the table drawn.Desired spark is the output from the table, and based in response to engine EGR amount and/or engine air-fuel ratio
Change the one or more functions that spark shifts to an earlier date and changes.Similarly, it is determined and is corresponded to coke based on engine speed and load
Ear is the spark residence time of the amount of the expectation spark energy of unit.Change spark energy by adjusting the ignition coil residence time
Amount.After desired spark timing and energy determine, method 900 proceeds to step 908.
In step 908, method 900 is based on desired spark timing and at least one spark of energy adjusting controls signal category
Property.In one example, spark control signal attribute can be crankshaft angles, and in the crankshaft angles, spark stops order and sends
To ignition coil.In addition, method 900 can adjust the ignition order pulse duration.
In one example, method 900 adjusts the spark attribute for being supplied to single conductor, which refers to
The command signal on ground, wherein command signal include the fire of every group of two ignition coils for providing energy to single spark plug
Flower timing and location information.Single conductor can be provided for each engine cylinder.It includes small that single attribute, which may include supply,
In the signal pulse width of the duration of predetermined time amount as shown in Figure 7.Alternatively, single attribute can supply packet
Include the pulse width of the signal of the duration more than predetermined time amount as shown in Figure 7.The duration of pulse width can
To be supplied with charge volume to the basis of one of two ignition coils.The timing of pulse width can start and/or terminate igniting
The basis of coil charges.Pulse width can be about the high or low horizontal component of signal.In one example, wherein pulse width
More than predetermined time amount, the first ignition coil of two ignition coils is with reference to wide with the relevant control signal pulse of engine location
The timing of degree carries out charge or discharge.
In another example, an attribute of any one signal of the adjustment of method 900 in two signals, described two
A signal can be supplied by referring to two conductors on ground.Two signals can provide during cylinder cycle, and include
Spark is supplied to the spark timing information of cylinder about by single spark plug, and the single spark plug can be via two igniting
Coil supplies energy.The attribute adjusted can be two control one of signals is in high state or low relative to engine location
The timing of state.By adjusting the pulse width timing of a signal, it can adjust and be transported to individually by single ignition coil
The spark timing and spark energy of spark plug.It should also be mentioned that the conveying of one of two signals is about all engine cylinders
Spark timing information, and information of another conveying in two signals about the spark timing of an engine cylinder.
Show that the example for the spark that adjustment is provided by the single ignition coil of system, the system can be supplied from two in Fig. 8
The energy of ignition coil is to single spark plug.After the Attribute tuning of control signal, method 900 proceeds to step 910.
In step 910, method 900 is converted into coil drive signal by signal is controlled.Coil drive signal determination can be for
When occur to the charging and discharging of the single coil of two coils of energy to single spark plug.
In one example, wherein two ignition leads for passing through single command signals direct supply energy to single spark plug
The charge control of circle, method 900 explain single command signal and export retention signal to two ignition coils single ignition lead
Circle.
In another example, wherein two ignition leads for passing through two control signals directs supply energy to two spark plugs
The charge control of circle, method 900 explain a single point of the output retention signal to two ignition coils together of two control signals
Firewire circle.After exporting retention signal, method 900 proceeds to step 912.
In step 912, method drives one of two ignition coils with electric current.When the retention signal allows electric current to flow to igniting
When coil, ignition coil charging.When the electric current flowing stopping to the ignition coil, ignition coil electric discharge.Show at one
In example, ignition coil can supply electric current by field-effect transistor or another type of switching device.In two ignition coils
One of supply energy to spark plug after, method 900, which proceeds to, to be exited.
In step 914, method 900 determines desired spark timing and spark energy, to be conveyed by two ignition coils
To the single spark plug of engine cylinder.In one example, engine spark timing, which is empirically determined and is stored in, passes through hair
In two tables of motivation rotating speed and load index.The expectation timing of supply energy to the spark plug is the output from the table and base
In the one or more work(for changing ignition coil charging and discharging timing in response to engine EGR amount and/or engine air-fuel ratio
Can and change.Similarly, the amount for corresponding to the expectation spark energy as unit of joule is determined based on engine speed and load
Each ignition coil the spark residence time.Spark energy changes by adjusting the ignition coil residence time.In desired fire
After flower timing and energy determine, method 900 proceeds to step 916.
In step 916, method 900 is based on desired spark timing and at least two spark of energy adjusting controls signal category
Property.In one example, spark control signal attribute can be crankshaft angles, and in the crankshaft angles, two sparks stop order
It is provided to two ignition coils.Therefore, the engine location synchronism output of order and each cylinder cycle is stopped.In addition, side
Method 900 can adjust the ignition order pulse duration for being supplied to two ignition coils.
In one example, method 900 adjusts the two spark attributes supplied by single conductor, and single conductor conveying is drawn
The command signal on ground is used, wherein command signal includes the spark control instruction of multiple cylinders, and wherein command signal includes carrying
For the spark timing and location information of every group of two ignition coils of energy to single spark plug, and wherein command signal includes
The spark timing and location information of each spark plug in each cylinder of multiple cylinders.Two attributes may include including small
In the first attribute for supplying pulse width in the command signal of the duration of predetermined time amount as shown in Figure 7.Second belongs to
Property may include including more than predetermined time amount as shown in Figure 7 duration command signal in supply pulse it is wide
Degree.In this way, two different pulse widths can indicate desired ignition lead by the single conductor of movement order signal
Circle order.The duration of first pulse width can be the basis for the charge volume that supply is fed into the first ignition coil.The
The duration of two pulse widths can be the basis for the charge volume that supply is fed into the second ignition coil.Pulse width is just
When can be start and/or terminate ignition coil charging basis.Pulse width can be the high or low horizontal part about signal
Point.In one example, when pulse width is more than predetermined time amount, the first ignition coil of two ignition coils refers to and hair
Motivation position it is relevant control signal pulse width timing and charge or discharge.In another example, when pulse width is less than
When predetermined time amount, the second ignition coil of two ignition coils refers to and the relevant control signal pulse width of engine location
Timing and charge or discharge.
In another example, two ignition leads that the adjustment of method 900 can be supplied by referring to two conductors on ground
Enclose two attributes of command signal.Two signals can provide during cylinder cycle, and include being supplied by single spark plug
For spark to the spark timing information of cylinder, which can be via two ignition coils supply energy.The category adjusted
Property may include timing that two control one of signals are in high state or low state relative to engine location.Another attribute can
To be in relative to engine location the timing of high state or low state including another of two control signals.By adjusting warp
By the pulse width timing of two signals of two conductors supply, it can adjust and be transported to single spark via two ignition coils
The spark timing and spark energy of plug.It should also be mentioned that fire of one of two signals conveying about all engine cylinders
The information of flower timing, and information of another signal conveying of two signals about the spark timing of an engine cylinder.Fig. 8
In show to adjust and provide the example to the spark of single spark plug via two ignition coils.Two categories of signal are controlled at two
Property adjustment after, method 900 proceeds to step 918.
In step 918, one or more control signal is converted into coil drive signal by method 900.Coil drive signal
When the charging and discharging that determination can supply energy to two ignition coils of single spark plug occur.
In one example, wherein two ignition leads for passing through single command signals direct supply energy to single spark plug
The charge control of circle, method 900 explain single command signal and export retention signal to two ignition coils.Retention signal is every
A cylinder cycle output.In addition, multiple circuits and ignition coil supply energy to the spark plug in each engine cylinder.It is less than
The pulse width of predetermined time amount is supplied with electric current to the basis of one of two ignition coils.It is wide more than the pulse of predetermined time amount
Degree is supplied with electric current to the basis of another ignition coil of two ignition coils.
In another example, wherein passing through two control signals and two conductors guidance supply energy to two spark plugs
The charge control of two ignition coils, method 900 explain two control signals and export two retention signals to supply spark energy
Measure two ignition coils of single spark plug.After exporting two retention signals, method 900 proceeds to step 912.
In step 912, method drives two ignition coils with electric current.When retention signal allows electric current to flow to ignition coil
When, ignition coil charging.When the electric current flowing stopping to ignition coil, ignition coil electric discharge.In one example, ignition lead
Circle can supply electric current by field-effect transistor or another type of switching device.Energy is supplied to fire in two ignition coils
After Hua Sai, method 900, which proceeds to, to be exited.
In this way, method 900 can supply retention signal to can supply energy by two ignition coils to fiery
The single ignition coil of the system of Hua Sai.In addition, method 900, which can be based on two, stops two stop letters of control signal offer
Number, one of them includes the ignition timing for other engine cylinders.
Therefore, the method for Fig. 9 provides conveying spark to engine comprising：By single conductor provide two it is different
Ignition coil residence time, two different residence times are supplied to the first ignition coil and the second ignition coil；And make
One ignition coil and the second ignition coil discharge into single spark plug.This method further comprises two different ignition coils
Residence time is converted into two ignition coil orders.This method further comprises in response to two ignition coil command operations two
Ignition coil driver.This method is provided including wherein the first residence time to the first ignition coil, and when the wherein second stop
Between provide to the second ignition coil.
In addition, this method further comprises supplying for the first residence time with the first engine crank angle, and with the second hair
Motivation crankshaft angles supplied for the second residence time.This method includes wherein the first engine crank angle from the second engine crankshaft
Angle delay（retard）.This method shifts to an earlier date including wherein the first engine crank angle from the second engine crank angle.
In another example, the method for Fig. 9 provides conveying spark to engine comprising：It is supplied by the first conductor
The first ignition coil residence time to the first ignition coil；Supplied for the second ignition coil residence time to second by the second conductor
Ignition coil；With so that the first ignition coil and the second ignition coil is discharged into single spark plug.This method includes wherein first point
The firewire circle residence time passes through the first pulse width offer more than the first threshold time.
In some instances, this method includes passing through less than the second threshold time wherein the second ignition coil residence time
Second pulse width provides.This method includes the ignition coil stop that wherein the second conductor also conveys multiple engine igniting coils
Time.This method is synchronous with engine location including wherein the first ignition coil residence time and the second ignition coil residence time
Ground supplies.This method further comprises stopping the second ignition coil residence time of supply to the second igniting in response to engine operating condition
Coil.This method includes the engine EGR amount that wherein engine operating condition is less than threshold engine EGR amount.This method includes it
Middle engine operating condition is the engine air-fuel ratio richer than threshold value air-fuel ratio.
In other examples, the method for Fig. 9 provides conveying spark to engine comprising：It is supplied by single conductor
Two different ignition coil charging current times, two different ignition coil charging current times are fed into the first igniting
Coil and the second ignition coil；With so that the first ignition coil and the second ignition coil is discharged into single spark plug.This method is into one
Step includes that two different ignition coil charging current times are converted into two ignition coil orders.This method further comprises
In response to two ignition coil command operations, two ignition coil drivers.This method includes wherein providing the first ignition coil to fill
Electric current time is to the first ignition coil and wherein provides for the second ignition coil charging current time to the second ignition coil, and
Further comprise the stop prevention and control excessively that the second coil is reset to closed state.
In another example, this method further comprises supplying the charging of the first ignition coil with the first engine crank angle
Current time and with the second engine crank angle supply the second ignition coil charging current time.This method includes wherein first
Engine crank angle postpones from the second engine crank angle.This method includes wherein the first engine crank angle from second
Engine crank angle shifts to an earlier date.
In another example, the method for Fig. 9 provides spark to engine comprising：Supply at first point by the first conductor
The firewire circle charging current time is to the first ignition coil；Supplied for the second ignition coil charging current time to the by the second conductor
Two ignition coils；With so that the first ignition coil and the second ignition coil is discharged into single spark plug.This method includes wherein first
The ignition coil charging current time passes through the first pulse width offer more than the first threshold time.This method includes wherein second
The ignition coil charging current time passes through the second pulse width offer less than the second threshold time.This method includes wherein second
Conductor also conveys the ignition coil charging current time of multiple engine igniting coils.
In some instances, this method includes that wherein the first ignition coil charging current time and the second ignition coil charge
Current time is synchronously supplied with engine location.This method further comprises stopping supply second point in response to engine operating condition
The firewire circle charging current time is to the second ignition coil.This method is less than threshold engine EGR including wherein engine operating condition
The engine EGR amount of amount.This method includes the engine air-fuel ratio that wherein engine operating condition is richer than threshold value air-fuel ratio.
As will be appreciated by those of skill in the art, the routine described in Fig. 9 can indicate any amount of place
Manage one or more of strategy, such as event-driven, interruption driving, multitask, multithreading etc..Therefore, various steps shown in
Rapid or function may in the order shown, concurrently or in the case where some are omitted execute.Similarly, it is not necessary to it is required that processing is suitable
Sequence realizes objects, features and advantages described herein, but provides the processing sequence only for the purposes of illustrating and describing.Herein
Described method and sequence can be by being stored in the non-transitory memory of the control device in system as described herein
In executable instruction provide.Although being not explicitly shown, those skilled in the art will recognize that shown step or
One or more of function can be repeatedly carried out according to used specific policy.
Terminate this specification herein.Those skilled in the art will be expected by reading this specification without departing substantially from this explanation
Many changes and modifications under the spirit and scope of book.For example, with natural gas, gasoline or alternative fuel configuration operation L3,
L4, L5, V6, V8, V10 and V12 engine can be using this specification to benefit.
Claims (3)
1. it is a kind of provide spark to engine method comprising：
First ignition coil charging current time was supplied to the first ignition coil of cylinder based on the first signal change state, the
One signal is provided by the first conductor；
Second ignition coil charging current time was supplied to by the state of state and first signal in response to second signal
Second ignition coil of the cylinder, the second signal are provided by the second conductor, wherein second conductor also point of delivery
Spark is supplied to the cylinder different from the cylinder so as to multiple second ignition coils by the firewire circle charging current time；With
Make first ignition coil and second ignition coil then made to discharge into single spark plug,
Wherein the second point firewire circle enhances the electric current from first ignition coil, to extend spark duration and
Spark energy.
2. according to the method described in claim 1, the wherein described first ignition coil charging current time is by being more than the first threshold
The first pulse width for being worth the time provides.
3. according to the method described in claim 2, the wherein described second point firewire circle charging current time is by being less than the second threshold
The second pulse width for being worth the time provides.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261714058P | 2012-10-15 | 2012-10-15 | |
| US61/714,058 | 2012-10-15 | ||
| US13/804,443 | 2013-03-14 | ||
| US13/804,443 US10502176B2 (en) | 2012-10-15 | 2013-03-14 | System and method for delivering spark to an engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103726969A CN103726969A (en) | 2014-04-16 |
| CN103726969B true CN103726969B (en) | 2018-07-17 |
Family
ID=50383359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310481316.2A Active CN103726969B (en) | 2012-10-15 | 2013-10-15 | Spark is conveyed to the system and method for engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103726969B (en) |
| DE (1) | DE102013111299A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9458773B2 (en) | 2014-05-15 | 2016-10-04 | Ford Global Technologies, Llc | Method and system for ignition energy control |
| CN104564479A (en) * | 2014-12-29 | 2015-04-29 | 联合汽车电子有限公司 | Engine ignition system and method |
| CN104847564A (en) * | 2015-05-06 | 2015-08-19 | 莫嘉林 | Double-spark ignition system |
| JP6476295B2 (en) * | 2015-07-15 | 2019-02-27 | 日立オートモティブシステムズ株式会社 | Engine control device |
| US9739252B1 (en) * | 2016-02-19 | 2017-08-22 | Ford Global Technologies, Llc | System and method for detecting engine knock and misfire |
| JP6324432B2 (en) | 2016-04-12 | 2018-05-16 | 三菱電機株式会社 | Ignition control device and ignition control method for internal combustion engine |
| JP7058758B2 (en) * | 2018-12-18 | 2022-04-22 | 三菱電機株式会社 | Ignition system for internal combustion engine |
| KR20220112982A (en) * | 2021-02-05 | 2022-08-12 | 현대자동차주식회사 | Control system of ignition coil and method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885541A (en) * | 1973-07-23 | 1975-05-27 | Teledyne Ind | Dual ignition coil for internal combustion engine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2590995B2 (en) * | 1987-12-26 | 1997-03-19 | アイシン精機株式会社 | Ignition device |
| GB9515272D0 (en) * | 1994-12-23 | 1995-09-20 | Philips Electronics Uk Ltd | An ignition control circuit, and engine system |
| JP4691373B2 (en) * | 2005-03-14 | 2011-06-01 | 日立オートモティブシステムズ株式会社 | Spark ignition engine, control device used for the engine, and ignition coil used for the engine |
| US7121270B1 (en) * | 2005-08-29 | 2006-10-17 | Vimx Technologies Inc. | Spark generation method and ignition system using same |
-
2013
- 2013-10-14 DE DE201310111299 patent/DE102013111299A1/en active Pending
- 2013-10-15 CN CN201310481316.2A patent/CN103726969B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885541A (en) * | 1973-07-23 | 1975-05-27 | Teledyne Ind | Dual ignition coil for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103726969A (en) | 2014-04-16 |
| DE102013111299A1 (en) | 2014-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103726969B (en) | Spark is conveyed to the system and method for engine | |
| US10502176B2 (en) | System and method for delivering spark to an engine | |
| CN105275648B (en) | The system and method for selective cylinder deactivation | |
| CN105089903B (en) | The method and system of igniter motor control | |
| US9771918B2 (en) | Ignition system | |
| US8108125B2 (en) | Reformate control via accelerometer | |
| CN105292104B (en) | For improving the method and system of hybrid vehicle consistency of performance | |
| CN104071150B (en) | Hybrid vehicle | |
| CN101539063B (en) | System and control method for an engine having two types of fuel injectors | |
| CN103582754B (en) | Method for controlling vehicle launch | |
| CN104165097B (en) | The control method of modulated displacement engine | |
| CN106170623B (en) | Internal combustion engine ignition device | |
| EP3006725A1 (en) | Ignition control device for internal combustion engine | |
| US9695792B2 (en) | System and method for operating an ignition system | |
| CN103061904B (en) | For providing fuel to the system and method for electromotor via multiple fuel paths | |
| CN107709756A (en) | Engine control system | |
| JP5765493B2 (en) | Ignition device and ignition method for internal combustion engine | |
| CN104755749B (en) | Controller for starting vehicular direct-injection engine | |
| CN107415934A (en) | Control device for motor vehicle driven by mixed power and the control method for motor vehicle driven by mixed power | |
| CN105545502A (en) | Hybrid vehicle | |
| US9903333B2 (en) | Ignition apparatus for an internal-combustion engine | |
| US20160146176A1 (en) | Ignition control device | |
| CN107587948A (en) | System and method for generating auxiliary torque | |
| JP2010095084A (en) | Control device for hybrid vehicle | |
| CN105793096A (en) | Controller and control method for power converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |