CN103726969A - System and method for delivering spark to an engine - Google Patents
System and method for delivering spark to an engine Download PDFInfo
- Publication number
- CN103726969A CN103726969A CN201310481316.2A CN201310481316A CN103726969A CN 103726969 A CN103726969 A CN 103726969A CN 201310481316 A CN201310481316 A CN 201310481316A CN 103726969 A CN103726969 A CN 103726969A
- Authority
- CN
- China
- Prior art keywords
- spark
- coil
- point fire
- spark coil
- charging current
- 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.)
- Granted
Links
Images
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
A system and method for delivering spark to an engine is disclosed. In one example, a single conductor carries a spark signal that is indicative of a desired spark advance for a plurality of ignition coils. The system and method may reduce wiring complexity for spark plugs that are supplied energy via two ignition coils.
Description
The cross reference of related application
The application requires the U.S. Provisional Patent Application No.61/714 submitting on October 15th, 2012,058 preference, and this is for your guidance for all objects are included in for its full content.
Technical field
The application relates to the system and method to spark ignition engine for delivery of spark.This system and method can be particularly useful for the motor that operates mixture rare or dilution.
Background technique
Motor can be for example, with the air-fuel mixture operation of rare air-fuel mixture or (, by exhaust gas recirculatioon (EGR)) dilution, to improve motor fuel Economy and/or discharge.But when motor is during with mixture operation rare or dilution, combustion stability may reduce.Improvement is to increase spark energy with a kind of method of the combustion stability of the motor of rare air-fuel mixture operation.Spark energy can increase by the inductance that increases coil, and this coil is supplied with spark to motor by spark plug.But, increase coil inductance and can increase the coil charges time, and the coil of higher inductance may reduce the ignition system efficiency under the condition of when not expecting to increase the amount of spark energy (for example,, between the main combustion period of stoichiometric mixture).These and other shortcomings of single-coil ignition system can overcome by supplying with spark to spark plug via two spark coils.Two spark coils can, in different time charging and/or electric discharge, to increase spark duration and energy, may increase the quantity of controller output and electric wire but be used for each spark plug at two spark coils of different time operation significantly.Therefore, the system of each spark plug twin coil can improve combustion stability, but also may increase system cost, complexity and installation time.
Summary of the invention
The present inventor has realized that above-mentioned shortcoming, and after deliberation for the method for spark to motor is provided, the method comprises: by single conductor, supply with two the different spark coil waiting time/waiting time (dwell time), these two different waiting time are supplied to the first spark coil and second point fire coil; With make the first spark coil and second point fire coil discharge into single spark plug.
By the order of encoded point fire coil, likely reduce the quantity of conductor in engine igniting system.In one example, the pulse width of the spark coil order of a spark coil based on being greater than for first scheduled time.The pulse width of the spark coil order of second point fire coil based on being less than for second scheduled time.Two different pulse widths can be transmitted by single conductor, to operate, supply with two spark coils of energy to single spark plug.
In another example, the order of the first spark coil can be transmitted by the first conductor, and the order of second point fire coil can be by the second conductor transmission.The second conductor also can be carried and supply with the order of energy to multiple other spark coils of the spark plug in other engine cylinders.Therefore, than the conductor of spark coil conveying ignition coil signal still less, can cover in ignition system.Therefore, ignition system wiring complexity can reduce.
In another example, a kind of for providing spark to the method for motor to comprise: by the first conductor, to supply with for the first spark coil charging current time to the first spark coil; By the second conductor, supply with the second point fire coil charging current time to second point fire coil; And make the first spark coil and second point fire coil be discharged to single spark plug.
In another example, the second conductor is also carried the spark coil charging current time of multiple engine igniting coils.
In another example, the first spark coil charging current time and second point fire coil charging current time and engine location are synchronously supplied with.
In another example, the method further comprises in response to engine operating condition, stops supplying with the second point fire coil charging current time to second point fire coil.
In another example, engine operating condition is the engine EGR amount that is less than 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, for supplying with spark to the system of motor, comprise: the first spark coil predriver circuit; With the interpretation logic of the first spark coil predriver circuit electric connection, this interpretation logic comprises two spark coil driver outputs; And with two spark coil drive circuits of interpretation logic electric connection.
In another example, this system further comprises and two spark coils of two spark coil drive circuit electric connections.
In another example, this system further comprises and the second point fire coil predriver circuit of interpretation logic electric connection.
In another example, the interpretation logic electric connection of second point fire coil predriver circuit and multiple engine cylinders.
In another example, the first spark coil predriver circuit only with a spark coil drive circuit electric connection of multiple spark coil drive circuits.
This specification can provide some advantages.Particularly, the method has reduced ignition system wiring complexity.In addition, the method can reduce ignition system installation time.In addition, the method can reduce ignition system cost.
When considering individually or by reference to the accompanying drawings, from embodiment below, the above-mentioned advantage of this specification and other advantages and feature will be apparent.
The series of concepts that provides foregoing invention content to further describe in embodiment with the form introduction of simplifying is provided.This does not mean that key or the essential characteristic of determining theme required for protection, and the scope of theme required for protection is limited uniquely by appended claims.In addition, theme required for protection is not limited to solve in the above or the mode of execution of any shortcoming of mentioning in any part of the present disclosure.
Accompanying drawing explanation
When individually or while considering with reference to accompanying drawing, the example that is referred to herein as the example of embodiment by reading will be understood advantage described herein more completely, wherein:
Fig. 1 is the schematic diagram of motor;
Fig. 2 is the schematic diagram of the ignition system of prior art;
Fig. 3 illustrates the illustrative diagram of the first ignition system;
Fig. 4 illustrates the illustrative diagram of the second interchangeable ignition system;
Fig. 5 illustrates the example signal of supply of electrical energy to a single point fire coil of spark plug;
Fig. 6 illustrates the example signal of supply of electrical energy to two spark coils of spark plug;
Fig. 7 illustrates the example control signal of the first ignition system;
Fig. 8 illustrates the example control signal of interchangeable the second replaceable ignition system; With
Fig. 9 is the flow chart to the exemplary method of spark plug for supply of electrical energy.
Embodiment
This specification relates to supplies with the spark plug of energy to spark ignition engine.In a non-limiting example, control signal is supplied with by single electric wire.Two coils can operate at different time respectively in response to this control signal.Therefore, replace two wires of supplying with control signal to two spark coil, can carry out identical function with single electric wire.By this way, can reduce the quantity of controller output.In addition, compared with other multi-coil systems, can in this system, use less electric wire.Fig. 1, Fig. 3 and Fig. 4 illustrate example points ignition system.Fig. 2 illustrates the ignition system of prior art.The system of Fig. 1, Fig. 3 and Fig. 4 can provide the spark energy shown in Fig. 5 and Fig. 6.Fig. 7 and Fig. 8 illustrate example points ignition system control signal.Finally, Fig. 9 illustrates a kind of exemplary method of two spark coils supply energy to single spark plug that pass through.
With reference to Fig. 1, explosive motor 10 is controlled by electronic engine control device 12, and this explosive motor 10 comprises multiple cylinders, and a cylinder in the plurality of cylinder is shown in Fig. 1.Motor 10 comprises firing chamber 30 and cylinder wall 32, and piston 36 is positioned at wherein and is connected to bent axle 40.Firing chamber 30 is illustrated by intake valve 52 and exhaust valve 54 separately and is communicated with intake manifold 44 and gas exhaust manifold 48.Each intake valve and exhaust valve can be operated by intake cam 51 and exhaust cam 53.The position of adjustable intake cam 51 can be determined by intake cam sensor 55.The position of adjustable exhaust cam 53 can be determined by exhaust cam sensor 57.
In one example, transducer 70 can comprise multiple catalyzer bricks.In another example, can use multiple emission control systems, wherein each have multiple bricks.In one example, transducer 70 can be three-way catalyst.
In some instances, this motor can be connected to the motor/battery system in motor vehicle driven by mixed power.This motor vehicle driven by mixed power can have configuration in parallel, arranged in series or its variant or combination.In addition, in some instances, can adopt other engine configurations, for example, this motor can be by turbosupercharging or engine driven supercharging.
In operating process, four-journey circulation of experience conventionally of the each cylinder in motor 10: this circulation comprises intake stroke, compression stroke, expansion stroke and exhaust stroke.Usually, in intake stroke, exhaust valve 54 cuts out and intake valve 52 is opened.Air is introduced into firing chamber 30 by intake manifold 44, and piston 36 moves to the bottom of cylinder, to increase the volume in firing chamber 30.Piston 36 for example, is called lower dead center (BDC) by those skilled in the art conventionally near the position in cylinder bottom and the latter stage in its stroke (, when firing chamber 30 in its maximum volume time).In compression stroke, intake valve 52 and exhaust valve 54 are closed.Piston 36 moves towards cylinder head, so that the air in compression and combustion chamber 30.Piston 36 for example, is called top dead center (TDC) by those skilled in the art conventionally in its stroke latter stage and the point that approaches cylinder head (, when firing chamber 30 in its minimum volume time) most.Being called as below in the process of injection, fuel is introduced into firing chamber.Being called as below in the process of igniting, the fuel spraying is lighted by the known ignition mechanism of for example spark plug 92, thereby causes burning.In expansion stroke, the gas push piston 36 of expansion turns back to BDC.Bent axle 40 converts piston movement to the rotation torque of running shaft.Finally, in exhaust stroke, exhaust valve 54 is opened, and with the air-fuel mixture that discharges burning, to gas exhaust manifold 48, and this piston turns back to TDC.It should be noted in the discussion above that above-mentionedly only as example, to illustrate, and intake valve and the timing of exhaust valve open and/or closed can change, for example, so that IC Intake Valve Closes or various other examples of positive or negative valve overlap, delay to be provided.
Fig. 2 is the schematic diagram of the ignition system of exemplary prior art.In this example, controller 12 comprises two spark coil predriver circuit 280 and 282, one of each spark coil, and this spark coil can operate the spark plug to single cylinder with supply of electrical energy.Two spark coil predriver circuit 280 and 282 are supplied with low-level electric current to spark coil driver 202 and 204.Spark coil driver 202 and 204 is included in the top or near ignition system 88 that can be arranged on spark plug 92.The first spark coil predriver circuit 280 can be supplied with signal to the first spark coil driver 202.The first spark coil 206 is optionally supplied with electric current by the first coil actuator 202.Electrical energy storage device 220 provides electric current to the first spark coil 206.Similarly, second point fire coil predriver circuit 282 can be supplied with signal to second point fire coil driver 204.Second point fire coil 208 is optionally supplied with electric current by the second coil actuator 204.Electrical energy storage device 220 provides electric current to second point fire coil 208.
Spark plug 92 can be supplied to electric energy from the first spark coil 206 and/or second point fire coil 208.Spark plug 92 comprises the first electrode 260 and the second electrode 262.The second electrode 262 can with the continuous electric connection in ground 240.When potential difference is present between the first electrode 260 and the second electrode 262, spark can produce through gap 250.
Two different signals of system requirements of Fig. 2 and two independent electric wires or conductor 241 and 242, to operate the first spark coil 206 and second point fire coil 208.In addition, the ignition system shown in Fig. 2 illustrates a kind of system for single cylinder motor.For the each extra engine cylinder that exceedes cylinder shown in figure, except energy storing device 220 and ground 240, must provide each element of Fig. 2.Therefore, the system requirements of Fig. 2 is used for predriver and the electric wire of each the second coil, thereby the wiring of the ignition system of each spark plug single-point fire coil is doubled.
Referring now to Fig. 3, it shows the example of the first interchangeable ignition system.The ignition system of Fig. 3 comprises some the identical elements shown in the system of Fig. 2.In Fig. 3, have and reference character identical with the element of describing shown in Fig. 2 with those the identical elements shown in Fig. 2.
In this system, controller 12 comprises for supplying with the single igniting predriver circuit of control signal to the first spark coil 206 and second point fire coil 208.At motor, comprise under the condition of N cylinder, N spark coil predriver circuit provides control signal for spark coil.The output of predriver circuit 280 is directed into interpretation logic 302.Interpretation logic 302 can be included in programmable logic array, as the part of logic of enrolling central processing unit or specific integrated circuit (ASIC).Interpretation logic 302 is monitored timing and the level of the signal that predriver circuit 280 provides.In a non-limiting example, the timing of the signal being provided by predriver circuit 280 can be as described in Fig. 7.For example, when the pulse width of control signal was longer than for first scheduled time, interpretation logic 302 changes the state of the signal that is supplied to spark coil driver 202.When the pulse width of control signal was less than for second scheduled time, interpretation logic changes the state of the signal that is supplied to spark coil driver 204.Interpretation logic 302 can be exported independent signal to spark coil driver 202 and 204.By interpretation logic 302, be supplied to the signal of spark coil driver 202 and 204 and the cylinder travel synchronization of supplying with the cylinder of spark by the first spark coil 206 and second point fire coil 208.In one example, in the each cycle period that receives the cylinder of spark from the first spark coil 206 and/or second point fire coil 208, provide at least one spark.For example, in the compression stroke of cylinder that receives spark, a cylinder circulation just can be supplied with spark.In addition, in one example, the first spark coil 206 has the inductance different from second point fire coil 208.
Referring now to Fig. 4, it shows the example of the second interchangeable ignition system.The ignition system of Fig. 4 comprises some the identical elements shown in the system of Fig. 2.In Fig. 4, have and reference character identical with the element of describing shown in Fig. 2 with those the identical elements shown in Fig. 2.
Be similar to the system of Fig. 2, Fig. 4 illustrates the controller with the first predriver circuit 280 and the second predriver circuit 282.The difference of the system of Fig. 4 and Fig. 2 is that the system of Fig. 4 comprises interpretation logic 402.In addition, the second predriver circuit 282 is not only supplied with coil control signal to interpretation logic 402, it is used for operating second point fire coil 208, and predriver circuit 282 is also supplied with the interpretation logic of signal to N the cylinder as in the engine cylinder sum indicating at 403-405 place.Conductor 441 carries indication when to make the signal of the first spark coil 206 charging and dischargings.Conductor 442 is carried the signal of the second point fire coil charging and discharging of indicating each other engine cylinders that when make second point fire coil 208 and represented by 411-413.By this way, only provide an additional wire 442 of carrying out self-controller 12 to drive the second point fire coil 411-413 for each engine cylinder.For driving from the signal of each second point fire coil of other engine cylinders, by the second predriver circuit 282 and conductor 442, provided.
In this example, interpretation logic 402 provides control signal to the first spark coil drive circuit 202 and second point fire coil drive circuit 204.By select the basis of a pulse as operation second point fire coil drive circuit 204 from multiple pulses during cycle of engine, interpretation logic 402 provides control signal to arrive second point fire coil drive circuit 204.The first spark coil (not shown) of each other cylinders of motor is supplied to from the control signal that is similar to 280 predriver circuit.
Therefore, the system of Fig. 1, Fig. 3 and Fig. 4 provides supplies with spark to motor, and it comprises: the first spark coil predriver circuit; With the interpretation logic of the first spark coil predriver circuit electric connection, this interpretation logic comprises two spark coil driver outputs; With with two spark coil drive circuits of interpretation logic electric connection.This system further comprises two spark coils with two spark coil drive circuit electric connections.This system further comprises the second point fire coil predriver circuit with interpretation logic electric connection.This system comprises wherein second point fire coil predriver circuit and the interpretation logic electric connection for multiple engine cylinders.This system comprise the first spark coil predriver circuit wherein only with a spark coil drive circuit electric connection of multiple spark coil drive circuits.
Referring now to Fig. 5, it shows the example signal of supply of electrical energy to a single point fire coil of spark plug.Described signal can be provided by the system shown in Fig. 3 or Fig. 4.When only the first spark coil 206 or second point fire coil 208 are when cylinder cycle period provides energy for spark, another spark coil does not receive the signal of charge or discharge.Vertical marker T
0-T
2be illustrated in the interested moment during this sequence.
From first figure at the top of Fig. 5, represent spark coil charging current and the time of the first spark coil 206 or second point fire coil 208.Y-axis represents spark coil charging current, and spark coil charging current increases along the direction of Y-axis arrow.X-axis represents the time, and the time increases along the direction of X-axis arrow.
From second figure at the top of Fig. 5, represent spark coil discharge current and the time of the first spark coil 206 or second point fire coil 208.Y-axis represents spark coil discharge current, and spark coil discharge current increases along the direction of Y-axis arrow.X-axis represents the time, and the time increases along the direction of X-axis arrow.
At moment T
0, this spark coil neither charges, and does not also discharge.For example, during the air inlet or exhaust stroke of cylinder that receives spark, spark coil can not charge or discharge.
At moment T
1, in response to the spark timing of the expectation based on engine speed and load, electric current starts to flow into spark coil in primary side.When closing switch or driver are when allowing electric current to flow to this spark coil from energy source, electric current can flow in this spark coil.In one example, spark coil driver 202 is closed after the order receiving from the interpretation logic 302 shown in Fig. 3.In another example, spark coil driver 202 is closed after the order receiving from the interpretation logic 402 shown in Fig. 4.
At moment T
2, in response to causing the spark timing of expectation of primary side electric discharge of this spark coil and the induced current flow between spark coil and spark plug, to the current flowing of the primary side of this spark coil, stop.Ignition coil current declines along with the increase of time.In one example, in response to the order of the interpretation logic 302 from shown in Fig. 3, spark coil driver 202 is at moment T
2open.In another example, in response to the order of the interpretation logic 402 from shown in Fig. 4, spark coil driver 202 is at moment T
2open.
Therefore, Fig. 5 illustrates when operating single spark coil in described circuit the example ignition coil signal for the circuit of Fig. 3 and Fig. 4.Such operation can be similar to the operation of the spark coil in the monocoil ignition system of each spark plug.
Referring now to Fig. 6, it shows the example signal of supply of electrical energy to two spark coils of spark plug.Described signal can be provided by the system shown in Fig. 3 or Fig. 4.Fig. 6 illustrate the first spark coil 206 and second point fire coil 208 in cylinder cyclic process for spark provides energy.Vertical marker T
5-T
9be illustrated in the interested moment during this sequence.
From first figure at the top of Fig. 6, represent spark coil charging current and the time of supply of electrical energy to the first spark coil of spark plug.The first spark coil can be the spark coil 206 shown in Fig. 3 and Fig. 4.Y-axis represents spark coil charging current, and spark coil charging current increases along the direction of Y-axis arrow.X-axis represents the time, and the time increases along the direction of X-axis arrow.
From second figure at the top of Fig. 6, represent spark coil charging current and the time of supply of electrical energy to the second point fire coil of spark plug.Second point fire coil can be the spark coil 208 shown in Fig. 3 and Fig. 4.Y-axis represents spark coil charging current, and spark coil charging current increases along the direction of Y-axis arrow.X-axis represents the time, and the time increases along the direction of X-axis arrow.
From the 3rd figure at the top of Fig. 6, represent spark coil discharge current and the time from the first and second spark coils.Y-axis represents spark coil discharge current, and spark coil discharge current increases along the direction of Y-axis arrow.X-axis represents the time, and the time increases along the direction of X-axis arrow.
At moment T
5, spark coil neither charges, and does not also discharge.For example, during the air inlet or exhaust stroke of cylinder that receives spark, spark coil can not charge or discharge.
At moment T
6, in response to the expectation spark timing based on engine speed, load and motor dilution, electric current starts in primary side flows into the first spark coil.When closing switch or driver are when allowing electric current to flow to the first spark coil from energy source, electric current can flow in the first spark coil.In one example, spark coil driver 202 is closed after the order receiving from the interpretation logic 302 shown in Fig. 3.In another example, spark coil driver 202 is closed after the order receiving from the interpretation logic 402 shown in Fig. 4.
At moment T
7, in response to the expectation spark timing based on engine speed, load and the dilution of air inlet aerating mixture, electric current starts in primary side flows into second point fire coil.When closing switch or driver are when allowing electric current to flow to second point fire coil from energy source, electric current can flow in second point fire coil.In one example, spark coil driver 204 is closed after the order receiving from the interpretation logic 302 shown in Fig. 3.In another example, spark coil driver 204 is closed after the order receiving from the interpretation logic 402 shown in Fig. 4.
At moment T
8, in response to causing the expectation spark timing of primary side electric discharge of the first spark coil and the induced current flow between spark coil and spark plug, to the current flowing of the primary side of the first spark coil, stop.The first ignition coil current declines along with the increase of time.In one example, in response to the order of the interpretation logic 302 from shown in Fig. 3, spark coil driver 202 is at moment T
8open.In another example, in response to the order of the interpretation logic 402 from shown in Fig. 4, spark coil driver 202 is at moment T
8open.
At moment T
9, in response to causing the expectation spark timing of primary side electric discharge of second point fire coil and the induced current flow between spark coil and spark plug, to the current flowing of the primary side of second point fire coil, stop.Second ignition coil current support/enhancing (bolster) is from the electric current of the first spark coil, thus prolongation spark duration and spark energy.In one example, in response to the order of the interpretation logic 302 from shown in Fig. 3, spark coil driver 204 is at moment T
9open.In another example, in response to the order of the interpretation logic 402 from shown in Fig. 4, spark coil driver 202 is at moment T
9open.
Therefore, Fig. 6 illustrates the example ignition coil signal of the circuit of Fig. 3 and Fig. 4 when operating two spark coils in circuit.By this way, spark duration and energy can increase, to improve the combustion stability in cylinder rare or that dilution operates.
Referring now to Fig. 7, the figure shows the control signal that comprises the ignition system (for example, the system of Fig. 3) of two spark coils in single-cylinder cyclic process.This signal indication control provides spark to arrive the signal of two coils of single cylinder (for example, be numbered 1 cylinder).Shown signal is the part for cycle of engine, and similarly control signal is the output of each cylinder circulation.With shown in those similarly other engine cylinders signal also the different time during cycle of engine (for example,, during the compression stroke of each cylinder of this motor) by single ignition control signal, provide.The signal of Fig. 7 can be produced by the system of Fig. 1 and Fig. 3 according to the method for Fig. 9.Vertical marker T
20-T
27be illustrated in the interested especially moment during this sequence.
From first figure at the top of Fig. 7, represent a single point fire coil control signal, this single point fire coil control signal is the basis of operation supply of electrical energy to the first and second spark coils of single spark plug.This spark coil control signal for example, in response to the engine combustion pattern in engine speed, engine load, its dependent variable (, rare or dilution) change state.For example, 704, the solid line part of this spark coil control signal trace shows an example points fire coil control signal for operate single spark coil in cylinder cycle period.For example, 702 and 712, the dotted portion of this trace shows for operate two spark coils and the spark coil control signal that multiple sparks are provided in cylinder cycle period.
From second figure at the top of Fig. 7, represent the first spark coil charging current.This charging current flows into the primary air in the first spark coil.The waiting time is that charging current flows into the amount of time in this spark coil.In the time of in charging current flows into the first spark coil, power storage supply with energy in the first spark coil of two spark coils of spark plug.Be stored in the amount of the energy in the first spark coil along with charging current moves and increases along the direction of Y-axis arrow.When near the reduced levels of the first charging current X-axis, the first spark coil does not charge.For example, at 720 places, solid line represents the first coil charging current when the timing of the coil control signal in first figure at the top from Fig. 7 in solid line (for example, 704).For example, at 726 place's dotted lines, represent interchangeable the first spark coil charging current producing during in timing place at 712 dotted line for example when the coil control signal in first figure at the top from Fig. 7.
The 3rd from the top of Fig. 7 illustrates second point fire coil charging current.When the second coil charges electric current is increasing, supply with energy and charge to the second point fire coil of two spark coils of single spark plug.When second point fire coil charging current signal is when the direction along Y-axis arrow increases, the charging of second point fire coil increases.When near the reduced levels of second point fire coil charging current signal X-axis, second point fire coil does not charge.Dotted line 730,732 and 734 represents that the spark coil can be alternatively being provided by the control signal from first figure at the top of Fig. 7 stops timing of signals.
From the 4th figure at the top of Fig. 7, represent the potential serviceability of the first and second spark coils.According to state table 750, this serviceability is corresponding to the operation of the first and second spark coils.For example, in the state that is numbered 2, only second point fire coil is in charging.In the state that is numbered 3, the first and second spark coils are all in charging.
At moment T
20, the first spark coil charging current and second point fire coil charging current are in low-level, and indication the first and second spark coils are not in charging.This spark coil state is also in " 0 " value, and indication the first and second spark coils are not in charging.This spark coil control signal is also in low-level, and indication coil is not by order charging.
At moment T
20with moment T
21between, can provide short endurance pulse, as shown in the dotted line at 702 places.In one example, when the high-level endurance of the pulse of spark coil control signal is less than predetermined threshold, (for example, be less than 75 μ s) time, spark coil control signal order second point fire coil charging current increases, to make second point fire coil charging, as at 730 places and moment T
21shown in.This short endurance spark coil control signal by as in Fig. 3 302 shown in interpretation logic be converted to second point fire coil charging current.Spark coil control signal after high level is less than scheduled time amount, convert to low-level after, second point fire coil charging current increases the scheduled time and measures at 730 places.Spark coil state is at moment T
21from 0, become 0 and 2.Second point fire coil also can increase, as shown in 732, so that the endurance of longer spark coil charging to be provided.Therefore, if spark coil control signal comprise as the pulse shown in 702, to be one be 2 value to spark coil state, it is indicated at moment T
21with moment T
22between time durations only second point fire coil can activate.
At moment T
22soon,, spark coil control signal converts high level to before, and the high level that rests on 704 places is longer than scheduled time amount, and (for example, exceed 150 μ s), indication by making the first spark coil charging open the first spark coil as shown in 720.Scheduled time amount in spark coil control signal after 704 places convert higher level to, the first spark coil charging current starts to be increased at moment T
22higher level, indication the first spark coil charge.704 and moment T
22between to allow interpretation logic to determine be that the first spark coil or second point fire coil should be in chargings retard time.Possible spark coil state is denoted as 1,2 and 3.If only provided by spark coil control signal compared with long duration pulse, operating point fire coil 1 only.If provided by spark coil control signal if do not provided compared with long duration pulse and shorter endurance pulse 702 or 706, only operate second point fire coil.If long and all by spark coil control signal, provided compared with the short burst endurance, operate the first and second spark coils both.
If if pulse 702 be not output and be that second point fire coil charging current increases and opens after the shorter endurance ignition coil control pulses as shown in 706 compared with long duration ignition coil control pulses, as 734 and moment T
23shown in.Therefore, no matter from the low-level high level that converts to, or vice versa, and short endurance control signal pulse operation is to change the state of second point fire coil charging current.By this way, the output of spark coil control signal can be interpreted as the individual signals for the order of two spark coils stops or spark coil charging signals.In addition, should be mentioned that, if provided as the short pulse width shown in 702, before the first spark coil starts charging, second point fire coil starts charging.If do not provided as the short pulse width shown in 702, but provide as the short pulse width shown in 706, after the first spark coil starts charging, second point fire coil starts charging.In addition, should be mentioned that, if provided as two short pulses shown in 702 places and 706, short pulse 706 is used for order second point fire coil and stops charging, as indicated in second point fire coil charging current 730.By this way, spark coil 2 can discharge before spark coil 1, and the timing between spark coil charging and discharging can change.
708, spark coil control signal converts low state to, and directive command the first spark coil stops charging.The first spark coil charging current is 724 and moment T
24convert low state to, it is the scheduled time amount being later than in the time of the conversion at 708 places.Moment T
23with moment T
24between the combination of available point fire coil state based on being denoted as 1,2 and 3 possible spark coil pulse.
In pulse 710, spark coil control signal can convert higher state simply to, to indicate second point fire coil will stop receiving charging by the second charging current.Moment T
24with moment T
25between possible spark coil state be denoted as 0 and 2.It might also be mentioned, the timing of pulse 710 can be adjusted to finish to change the charging of second point fire coil with respect to the first spark coil charging and finish.
712, ignition control signal can convert high state to, to indicate the first spark coil to charge for the second time in cylinder cycle period.At moment T
26slower scheduled time amount, the first spark coil charging current is increased to higher level, with basis, in 712 spark coil control signal, indicates the first spark coil to charge for the second time in cylinder cycle period.Moment T
25with moment T
26between possible spark coil state be state 0.
714, it illustrates that ignition control signal converts reduced levels to when the first spark coil is when single cylinder cycle period operates twice.At moment T
27slower scheduled time amount, the first spark coil charging current converts reduced levels at 728 places.It is that the first igniting charging current or the second igniting charging current should change state that scheduled time amount after the conversion of spark coil control signal allows interpretation logic to determine.
Therefore, ignition control signal is individual signals, this signal can provide shorter endurance signal level to change, with the change of state of coding second point fire coil charging current, and identical signal provides longer endurance signal level, with the change of state of the first spark coil charging current of encoding.Holding point fire coil state of a control scheduled time amount is to allow interpretation logic to determine the basis of the charging current of the selected spark coil that will adjust.
Because the state of second point fire coil (be should be noted that by the storage Partial controll in the interpretation logic 302 of Fig. 3, the short endurance pulse that carrys out self-controller 12 is switching function), can take special preventive measure to avoid losing and synchronizeing with the state of expecting in controller.These preventive measure can comprise that reset second point fire coil stops protection (over dwell protection) to crossing of closed condition.Preventive measure can be including but not necessarily limited to: electrification reset/power on reset (power-on reset) (resetting when electric power is applied to ignition module), excess current reset (when the primary current of sensing second point fire coil exceedes predetermined restriction, resetting) and spend the igniting waiting time reset (opened and exceeded scheduled time reset while measuring at definite spark coil 2).
Referring now to Fig. 8, it shows for example, example control signal for interchangeable second point ignition system (, the system of Fig. 4).This signal indication control provides spark to arrive the signal of two coils of single cylinder (for example, be numbered 1 cylinder).The signal of other engine cylinder (not shown) with shown in those are similar.The signal of other engine cylinders is provided by N ignition coil signal and public ignition control signal in addition.Compared with the signal shown in Fig. 8, during cycle of engine, at different time, provide the signal of other engine cylinders.The signal of Fig. 8 can be produced by the system of Fig. 1 and Fig. 4 according to the method for Fig. 9, and represents single-cylinder circulation.Vertical marker T
30-T
37be illustrated in the interested especially moment during this sequence.
From first of the top of Fig. 8, illustrating is for operating the signal of supply of electrical energy to two basic spark coil control signals of the first and second spark coils of single spark plug.Spark coil for example, in response to its dependent variables such as engine speed, engine load, engine combustion patterns (, rare or dilution) control signal state of changing.For example in the solid line part of the ignition control signal trace at 804 places, the spark coil control signal for operate single spark coil in cylinder cycle period is shown.For example at the dotted portion of the trace at 808 places, the spark coil control signal for multiple sparks were provided in cylinder cycle period is shown.
From second of the top of Fig. 8, illustrating is for operating second signal of supply of electrical energy to two basic spark coil control signals of the second point fire coil of single spark plug.Second point fire coil control signal for example, in response to its dependent variables such as engine speed, engine load, engine combustion patterns (, rare or dilution) change state.Dotted line signal (for example, 812-816) illustrates that the control signal of the second coil can convert from low state the different time of high state (vice versa) to.In addition, second point fire coil control signal is to carry on the conductor of each second point fire coil that routes to each engine cylinder.
The 3rd from the top of Fig. 8 illustrates the first spark coil charging current.When the first spark coil charging current is when increasing, supply with energy and charging to the first spark coil of two spark coils of spark plug.When the first spark coil charging current moves along the direction of Y-axis arrow, the first spark coil charging is increasing.When the first spark coil charging current is near X-axis, the first spark coil is not in charging.For example at the solid line at 820 places, represent when the coil control signal in first figure from the top of Fig. 8 is in for example the first igniting charging current producing just constantly at 804 solid line.For example at the dotted line at 824 places, represent when the coil control signal in first figure from the top of Fig. 8 is in for example interchangeable the first spark coil charging current producing just constantly at 808 dotted line.
The 4th from the top of Fig. 8 illustrates second point fire coil charging current.When second point fire coil charging current is when increasing, supply with energy and charging to the second point fire coil of two spark coils of single spark plug.When second point fire coil charging current along the direction of Y-axis arrow when increasing, the charging of second point fire coil is increasing.When near the reduced levels of second point fire coil charging current X-axis, second point fire coil is not in charging.The spark coil charging current timing of signals can be alternatively being provided by the control signal from second figure at the top of Fig. 8 is provided for dotted line 830,832 and 834.
From the 5th figure at the top of Fig. 8, represent the potential serviceability of the first and second spark coils.According to state table 850, serviceability is corresponding to the operation of the first and second spark coils.For example, in the state of numbering 2, only second point fire coil is in charging.In the state of numbering 3, the first and second spark coils are all in charging.
At moment T
30, the first spark coil charging current and second point fire coil charging current are in low-level, and indication the first and second spark coils are not in charging.Spark coil state is also in " 0 " value, and indication the first and second spark coils are not in charging.Spark coil control signal is also in low-level, and indication coil is not by order charging.
Only at moment T
31before, illustrate that public second point fire coil control signal converts higher level at 812 places, and illustrate that the first spark coil control signal converts higher level threshold time amount to and (for example, is greater than 75 μ s) at 802 places.When the first spark coil control signal and the second ignition control signal are when higher level reaches threshold time amount, second point fire coil charging current starts to increase.Scheduled time amount after two coil control signals are height, in response to the conversion at 802 places and 812 places, second point fire coil charging current starts at 830 places to increase.Spark coil state is at moment T
31from 0, become 0 and 2.Therefore,, if spark coil control signal comprises that spark coil state is the value for 2 as the pulse shown in 802 places and 812, it is indicated at moment T
31with moment T
32between time durations only second point fire coil can activate.
At moment T
32soon,, in response to the spark timing of expecting, the first spark coil control signal converts high level at 804 places before, and rests on high level place, and indication is opened the first spark coil by increase by the first spark coil charging current at 820 places.In the first spark coil control signal, at 804 places, convert the scheduled time amount after higher level to, the first spark coil charging current is at 820 places and moment T
32convert higher level to, indication is numbered 1 spark coil and charges.Possible spark coil state is denoted as 1,2 and 3.
At 814 places, showing second point fire coil control signal can convert high state to or from high state, convert replaceable time of low state to from low state.If convert high state to from low state, second point fire coil charging current is at 834 places and moment T
33be increased to higher state.If convert low state to from high state, in response to the motor spark timing of expecting, second point fire coil charging current drops to lower state from higher state.At moment T
33with moment T
34between the combination of the spark coil pulse of available spark coil state based on possible, and be denoted as 1,2 and 3.
806, illustrate that the first spark coil control signal converts reduced levels in response to the motor spark timing of expecting.At moment T
34soon afterwards, as shown in 822, the first spark coil charging current drops to reduced levels from higher level, to indicate the first spark coil not recharge.At moment T
34with moment T
35between possible spark coil state be denoted as 0 and 2.
816, illustrate that second point fire coil control signal converts reduced levels in response to the motor spark timing of expecting to from higher level.Second point fire coil charging current in response to second point fire coil control signal also at moment T
35from higher level, convert reduced levels to.Second point fire coil stops signal designation second point fire coil and does not recharge.At moment T
35with moment T
36between possible spark coil state be state 0.
808, illustrate that the first spark coil control signal converts higher level in response to the motor spark timing of expecting.At moment T
36scheduled time amount after a while, the first spark coil charging current is increased to higher level 824.By this way, the charging current signal that can adjust the first spark coil is to higher level, to provide energy for the second spark at spark plug place.At moment T
36with moment T
37between, spark coil can be in state 0 or state 1.
In 810, the first ignition coil signal, convert reduced levels to, to indicate the first spark coil charging to stop.The first spark coil charging current signal is 826 and moment T
37soon convert afterwards reduced levels to.Spark coil state is at moment T
37after in being 0 value.
Therefore, two spark coils of two single cylinders of ignition control signal control.In addition, a signal in two ignition control signals is directed into other engine cylinders, so that the second coil of all the other cylinders of control engine.In addition, the timing shown in Fig. 7 and Fig. 8 is only for illustrative purposes, is not regarded as limiting scope or the width of this specification.
Be also to be noted that the first spark coil can make current stops flow to the first spark coil to discharge after charging by starting at the first spark coil.Similarly, second point fire coil can make current stops flow to second point fire coil to discharge after charging by starting at second point fire coil.Therefore, separately the charging and discharging of spark coil by being supplied to the Current Control of spark coil.
Referring now to Fig. 9, it shows the method for a kind of supply of electrical energy to spark plug.The method of Fig. 9 can be stored in the nonvolatile storage of the controller 12 shown in Fig. 1 as executable instruction.In addition, the method for Fig. 9 can be applied to the system of Fig. 1, Fig. 3 and Fig. 4, so that the sequence in Fig. 5-8 to be provided.
In step 902, method 900 is determined engine operating condition.Engine operating condition can include, but are not limited to engine speed, engine load, engine air-fuel ratio, engine EGR amount and the time from engine start.After engine operating condition is determined, method 900 advances to step 904.
In step 904, method 900 judges that whether this motor is with rare or dilution mode operation.In one example, method 900 judges that according to engine air-fuel ratio motor operates with rare pattern.In another example, when engine EGR amount is greater than threshold quantity, method 900 judges that motor operates under diluting condition.If method 900 judges that motor is in rare or dilution operation, method 900 advances to step 914.Otherwise method 900 advances to step 906.If this motor does not have rare or dilution operation, only from the energy of a single point fire coil, can be supplied to spark plug in cylinder cycle period.If this motor is rare or dilution operation, from the energy of two spark coils, can be supplied to spark plug in cylinder cycle period.
In step 906, method 900 is determined spark timing and the spark energy expected, to be transported to the single spark plug of engine cylinder.In one example, motor spark is determined by rule of thumb in advance and is stored in the table by engine speed and load index.The spark of expecting is the output from this table, and changes based on change one or more functions that spark shifts to an earlier date in response to engine EGR amount and/or engine air-fuel ratio.Similarly, the spark waiting time corresponding to the amount of the expectation spark energy take joule as unit based on engine speed and determination of power load.By adjusting the spark coil waiting time, change spark energy.Expect spark timing and energy determine after, method 900 advances to step 908.
In step 908, method 900 spark timing and at least one spark control signal attribute of energy adjusting based on expecting.In one example, spark control signal attribute can be crankshaft angles, and in this crankshaft angles, spark stops order and sends to spark coil.In addition, method 900 can be adjusted the ignition order pulse duration.
In one example, method 900 is adjusted the spark attribute that is supplied to single conductor, this single conductor is carried the command signal that refers to ground, and wherein command signal comprises for providing energy to arrive spark timing and the location information of every group of two spark coils of single spark plug.Can provide single conductor for each engine cylinder.Single attribute can comprise supplies with the signal pulse width that comprises the endurance that is less than the amount of scheduled time as shown in Figure 7.Alternatively, single attribute can be supplied with the pulse width of the signal that comprises the endurance that is greater than the amount of scheduled time as shown in Figure 7.The endurance of pulse width can be the basis of supplying with one of charge volume to two spark coil.The timing of pulse width can be the basis of beginning and/or the charging of end point fire coil.Pulse width can be about the high or low horizontal component of signal.In one example, wherein pulse width is greater than scheduled time amount, and the first spark coil of two spark coils carries out charge or discharge with reference to the timing of the control signal pulse width relevant to engine location.
In another example, method 900 is adjusted an attribute from any one signal in two signals, and described two signals can arrive by reference two conductors on ground and supply with.Two signals can provide in cylinder cycle period, and comprised that described single spark plug can be supplied with energy via two spark coils about supply with the spark timing information of spark to cylinder by single spark plug.The attribute of adjusting can be the timings in high state or low state with respect to engine location of one of two control signals.By adjusting the pulse width timing of a signal, can adjust the spark timing and the spark energy that by a single point fire coil, are transported to single spark plug.It might also be mentioned, one of two signals are carried the information about the spark timing of all engine cylinders, and another in two signals carried the information about the spark timing of an engine cylinder.The example that the spark providing by a single point fire coil of system is provided has been shown in Fig. 8, and this system can be supplied with from the energy of two spark coils and arrive single spark plug.After the Attribute tuning of control signal, method 900 advances to step 910.
In step 910, method 900 converts control signal to coil drive signal.Coil drive signal determines when can supply with energy occurs to the charging and discharging of the single coil of two coils of single spark plug.
In one example, wherein by individual command signals direct, supply with the charging control of energy to two spark coils of single spark plug, method 900 explains that individual command signal output stop a single point fire coil of signal to two spark coil.
In another example, wherein by two control signals, instruct the charging control of two spark coils supplying with energy to two spark plug, method 900 explains that the output in the lump of two control signals stops a single point fire coil of signal to two spark coil.After output stops signal, method 900 advances to step 912.
In step 912, one of two spark coils of current drives for method.When this stop signal allows electric current to flow to spark coil, this spark coil charging.When stopping to the current flowing of this spark coil, this spark coil electric discharge.In one example, spark coil can be supplied with electric current by the COMM communication of field effect transistor or another type.At one of two spark coils, supply with energy after spark plug, method 900 advances to and exits.
In step 914, method 900 is determined spark timing and the spark energy expected, to be transported to the single spark plug of engine cylinder by two spark coils.In one example, the timing of motor spark is determined by rule of thumb and is stored in two tables by engine speed and load index.Supplying with energy is from the output of this table and based on changing one or more functions of spark coil charging and discharging timing and change in response to engine EGR amount and/or engine air-fuel ratio to the expectation timing of this spark plug.Similarly, the spark waiting time corresponding to each spark coil of the amount of the expectation spark energy take joule as unit based on engine speed and determination of power load.Spark energy changes by adjusting the spark coil waiting time.Expect spark timing and energy determine after, method 900 advances to step 916.
In step 916, method 900 spark timing and at least two spark control signal attributes of energy adjusting based on expecting.In one example, spark control signal attribute can be crankshaft angles, and in this crankshaft angles, two sparks stop order and are provided to two spark coils.Therefore, stopping order synchronizes and exports with the engine location of each cylinder circulation.In addition, method 900 can be adjusted the ignition order pulse duration that is supplied to two spark coils.
In one example, method 900 is adjusted two spark attributes supplying with by single conductor, single conductor is carried the command signal that refers to ground, wherein command signal comprises the spark control command of multiple cylinders, wherein the spark timing and the location information that provide energy to arrive every group of two spark coils of single spark plug are provided command signal, and wherein command signal comprises spark timing and the location information of the each spark plug in each cylinder of multiple cylinders.Two attributes can be included in and comprise the first attribute of supplying with pulse width in the command signal that is less than endurance of scheduled time amount as shown in Figure 7.The second attribute can be included in the command signal that comprises the endurance that is greater than the amount of scheduled time as shown in Figure 7 and supply with pulse width.By this way, two different pulse widths can be by the spark coil order of the single conductor indicative of desired of movement order signal.The endurance of the first pulse width can be the basis that supply is fed into the charge volume of the first spark coil.The endurance of the second pulse width can be the basis that supply is fed into the charge volume of second point fire coil.The timing of pulse width can be the basis of beginning and/or the charging of end point fire coil.Pulse width can be the high or low horizontal component about signal.In one example, when pulse width is greater than when amount scheduled time, the first spark coil charge or discharge with reference to the timing of the control signal pulse width relevant to engine location of two spark coils.In another example, when pulse width is less than when amount scheduled time, the charge or discharge with reference to the timing of the control signal pulse width relevant to engine location of the second point fire coil of two spark coils.
In another example, method 900 is adjusted two attributes of two spark coil command signals of two conductors supplies can arriving by reference ground.Two signals can provide in cylinder cycle period, and comprised the spark timing information to cylinder by single spark plug supply spark, and this single spark plug can be supplied with energy via two spark coils.The attribute of adjusting can comprise the timing in high state or low state with respect to engine location of one of two control signals.Another attribute can comprise another timing in high state or low state with respect to engine location of two control signals.By adjusting the pulse width timing of two signals supplying with via two conductors, can adjust the spark timing and the spark energy that via two spark coils, are transported to single spark plug.It might also be mentioned, one of two signals are carried the information about the spark timing of all engine cylinders, and another signal of two signals is carried the information about the spark timing of an engine cylinder.Shown in Fig. 8, adjust the example that is provided to the spark of single spark plug via two spark coils.After two Attribute tunings of two control signals, method 900 advances to step 918.
In step 918, method 900 converts one or more control signals to coil drive signal.Coil drive signal determines when can supply with energy occurs to the charging and discharging of two spark coils of single spark plug.
In one example, wherein by individual command signals direct, supply with the charging control of energy to two spark coils of single spark plug, method 900 explains that individual command signal output stop signal to two spark coil.Stop signal in each cylinder circulation output.In addition, multiple circuit and spark coil are supplied with energy to the spark plug in each engine cylinder.The pulse width that is less than scheduled time amount is the basis that supplies electric current to one of two spark coils.The pulse width that is greater than scheduled time amount is the basis that supplies electric current to another spark coil of two spark coils.
In another example, wherein pass through the charging control of two spark coils of two control signals and two conductor guidance supply energy to two spark plugs, method 900 is explained two control signals and exports two stop signals two spark coils that arrive single spark plug to supply spark energy.After two of outputs stop signal, method 900 advances to step 912.
In step 912, two spark coils of current drives for method.When stop signal allows electric current to flow to spark coil, spark coil charging.When stopping to the current flowing of spark coil, spark coil electric discharge.In one example, spark coil can be supplied with electric current by the COMM communication of field effect transistor or another type.At two spark coils, supply with energy after spark plug, method 900 advances to and exits.
By this way, method 900 can be supplied with and stop signal to supplying with a single point fire coil of energy to the system of spark plug by two spark coils.In addition, method 900 can stop control signal based on two provides two to stop signal, and one of them comprises the ignition timing for other engine cylinders.
Therefore, the method for Fig. 9 provides carries spark to motor, and it comprises: by single conductor, provide two different spark coil waiting time, two different waiting time are supplied to the first spark coil and second point fire coil; And make the first spark coil and second point fire coil discharge into single spark plug.The method further comprises and converts two different spark coil waiting time to two spark coil orders.The method further comprises in response to two spark coil drivers of two spark coil command operations.The method comprises that wherein first waiting time was provided to the first spark coil, and wherein second waiting time was provided to second point fire coil.
In addition, the method further comprises with the first engine crank angle supplied with for first waiting time, and supplied with for second waiting time with the second engine crank angle.The method comprises that wherein the first engine crank angle postpones (retard) from the second engine crank angle.The method comprises that wherein the first engine crank angle from the second engine crank angle in advance.
In another example, the method for Fig. 9 provides conveying spark to motor, and it comprises: by the first conductor, supplied with for the first spark coil waiting time to the first spark coil; By the second conductor, supply with the second point fire coil waiting time to second point fire coil; With make the first spark coil and second point fire coil discharge into single spark plug.The method comprises that wherein the first spark coil waiting time provided by the first pulse width that is greater than the first threshold time.
In some instances, the method comprises that wherein the second point fire coil waiting time provides by the second pulse width that is less than the Second Threshold time.The method comprises the spark coil waiting time that wherein the second conductor is also carried multiple engine igniting coils.The method comprises that wherein the first spark coil waiting time and the second point fire coil waiting time and engine location are synchronously supplied with.The method further comprises in response to engine operating condition and stops supplying with the second point fire coil waiting time to second point fire coil.The method comprises that wherein engine operating condition is the engine EGR amount that is less than threshold engine EGR amount.The method comprises that wherein engine operating condition is the engine air-fuel ratio richer than threshold value air fuel ratio.
In other examples, the method of Fig. 9 provides conveying spark to motor, it comprises: by single conductor, supply with two different spark coil charging current times, two different spark coil charging current times are fed into the first spark coil and second point fire coil; With make the first spark coil and second point fire coil discharge into single spark plug.The method further comprises and converts two different spark coil charging current times to two spark coil orders.The method further comprises in response to two spark coil drivers of two spark coil command operations.The method comprises wherein to be provided for the first spark coil charging current time to the first spark coil and wherein provides the second point fire coil charging current time to second point fire coil, and further comprised the stop prevention and control excessively that the second coil reset to closed condition.
In another example, the method further comprise with the first engine crank angle supply with the first spark coil charging current time and with second engine crank angle supply with the second point fire coil charging current time.The method comprises that wherein the first engine crank angle postpones from the second engine crank angle.The method comprises that wherein the first engine crank angle from the second engine crank angle in advance.
In another example, the method for Fig. 9 provides spark to motor, and it comprises: by the first conductor, supplied with for the first spark coil charging current time to the first spark coil; By the second conductor, supply with the second point fire coil charging current time to second point fire coil; With make the first spark coil and second point fire coil discharge into single spark plug.The method comprises that wherein the first spark coil charging current time provided by the first pulse width that is greater than the first threshold time.The method comprises that wherein the second point fire coil charging current time provides by the second pulse width that is less than the Second Threshold time.The method comprises the spark coil charging current time that wherein the second conductor is also carried multiple engine igniting coils.
In some instances, the method comprises that wherein the first spark coil charging current time and second point fire coil charging current time and engine location are synchronously supplied with.The method further comprises in response to engine operating condition and stops supplying with the second point fire coil charging current time to second point fire coil.The method comprises that wherein engine operating condition is the engine EGR amount that is less than threshold engine EGR amount.The method comprises that wherein engine operating condition is the engine air-fuel ratio richer than threshold value air fuel ratio.
Just as skilled in the art will appreciate, the routine described in Fig. 9 can represent one or more in any amount of processing policy, such as event-driven, drives interrupts, Multi task, multithreading etc.Therefore, shown various steps or function may with shown in order, carry out concurrently or in some abridged situations.Similarly, needn't require processing sequence to realize object described herein, feature and advantage, but provide this processing sequence only for convenience of explanation and describe.Method described herein and sequence can provide by the executable instruction being stored in the nonvolatile storage of the control gear in system described herein.Although one or more can repeatedly the execution according to used specific policy in the step shown in one of ordinary skill in the art will recognize that or function is not clearly shown.
At this, finish this specification.Those skilled in the art is by reading this specification by many changes and the modification expected under the spirit and scope that do not deviate from this specification.For example, with L3, L4, L5, V6, V8, V10 and the V12 motor of rock gas, gasoline or the operation of alternative fuel placement, can use this specification to benefit.
Claims (10)
1. the method for spark to motor is provided, and it comprises:
By single conductor, supply with two different spark coil charging current times, described two different spark coil charging current times are fed into the first spark coil and second point fire coil; With
Make described the first spark coil and described second point fire coil discharge into single spark plug.
2. method according to claim 1, it further comprises described two different spark coil charging current times is changed into two spark coil orders.
3. method according to claim 2, it further comprises in response to two spark coil drivers of described two spark coil command operations.
4. method according to claim 1, wherein the first spark coil charging current time offered described the first spark coil, and wherein the second point fire coil charging current time offers described second point fire coil, and described method further comprises the stop prevention and control excessively that make described the second coil be reset to closed condition.
5. method according to claim 4, it further comprises with the first engine crank angle supplies with described the first spark coil charging current time, and supplies with the described second point fire coil charging current time with the second engine crank angle.
6. method according to claim 5, wherein said the first engine crank angle postpones from described the second engine crank angle.
7. method according to claim 5, wherein said the first engine crank angle from described the second engine crank angle in advance.
8. the method for spark to motor is provided, and it comprises:
By the first conductor, supplied with for the first spark coil charging current time to the first spark coil;
By the second conductor, supply with the second point fire coil charging current time to second point fire coil; With
Make described the first spark coil and described second point fire coil discharge into single spark plug.
9. method according to claim 8, wherein said the first spark coil charging current time provides by the first pulse width that is greater than the first threshold time.
10. method according to claim 9, the wherein said second point fire coil charging current time provides by the second pulse width that is less than the Second Threshold time.
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 true CN103726969A (en) | 2014-04-16 |
| CN103726969B 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) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107100777A (en) * | 2016-02-19 | 2017-08-29 | 福特环球技术公司 | System and method for detecting combustion knock He catching fire |
| CN107709756A (en) * | 2015-07-15 | 2018-02-16 | 日立汽车***株式会社 | Engine control system |
| CN113167207A (en) * | 2018-12-18 | 2021-07-23 | 三菱电机株式会社 | Ignition device for internal combustion engine |
Families Citing this family (3)
| 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 |
| 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 |
| KR20220112982A (en) * | 2021-02-05 | 2022-08-12 | 현대자동차주식회사 | Control system of ignition coil and method thereof |
Citations (5)
| 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 |
| US4938200A (en) * | 1987-12-26 | 1990-07-03 | Aisin Seiki Kabushiki Kaisha | Ignition device |
| US5623912A (en) * | 1994-12-23 | 1997-04-29 | U.S. Philips Corporation | Ignition control circuit, and engine system |
| US20060201475A1 (en) * | 2005-03-14 | 2006-09-14 | Hitachi, Ltd. | Spark ignition engine, controller for use in the engine, ignition coil for use in the engine |
| CN101292404A (en) * | 2005-08-29 | 2008-10-22 | 卫思科技公司 | 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 (5)
| 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 |
| US4938200A (en) * | 1987-12-26 | 1990-07-03 | Aisin Seiki Kabushiki Kaisha | Ignition device |
| US5623912A (en) * | 1994-12-23 | 1997-04-29 | U.S. Philips Corporation | Ignition control circuit, and engine system |
| US20060201475A1 (en) * | 2005-03-14 | 2006-09-14 | Hitachi, Ltd. | Spark ignition engine, controller for use in the engine, ignition coil for use in the engine |
| CN101292404A (en) * | 2005-08-29 | 2008-10-22 | 卫思科技公司 | Spark generation method and ignition system using same |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107709756A (en) * | 2015-07-15 | 2018-02-16 | 日立汽车***株式会社 | Engine control system |
| CN107709756B (en) * | 2015-07-15 | 2019-05-10 | 日立汽车***株式会社 | Engine control system |
| CN107100777A (en) * | 2016-02-19 | 2017-08-29 | 福特环球技术公司 | System and method for detecting combustion knock He catching fire |
| CN113167207A (en) * | 2018-12-18 | 2021-07-23 | 三菱电机株式会社 | Ignition device for internal combustion engine |
| CN113167207B (en) * | 2018-12-18 | 2022-10-28 | 三菱电机株式会社 | Ignition device for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103726969B (en) | 2018-07-17 |
| DE102013111299A1 (en) | 2014-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103726969A (en) | System and method for delivering spark to an engine | |
| RU145341U1 (en) | ENGINE SPARK SYSTEM | |
| CN105275648B (en) | The system and method for selective cylinder deactivation | |
| CN201747495U (en) | Fuel delivery system of multi-fuel engine | |
| US9771918B2 (en) | Ignition system | |
| CN101539063B (en) | System and control method for an engine having two types of fuel injectors | |
| CN102913363A (en) | Method and system for pre-ignition control | |
| CN102913362A (en) | Method and system for pre-ignition control | |
| CN103061904B (en) | For providing fuel to the system and method for electromotor via multiple fuel paths | |
| WO2013038530A1 (en) | Ignition control apparatus for internal combustion engine | |
| CN102297067A (en) | Methods for controlling an internal combustion engine | |
| CN103104366A (en) | Method for determining and compensating engine blow-through air | |
| CN102162401A (en) | Method for starting an engine | |
| CN102162404A (en) | Method for starting an engine | |
| CN101839185A (en) | Use ion sense feedback and multi-strike spark to manage the burning control of highly diluted and rare air fuel ratio | |
| CN102705090A (en) | Method and system for pre-ignition control | |
| CN103180579A (en) | System and method for adjusting fuel mass for minimum fuel injector pulse | |
| CN103244267A (en) | System and method for monitoring an ignition system | |
| CN102806915A (en) | Torque control systems and methods | |
| CN105649803A (en) | Methods and systems for learning variability of direct fuel injector | |
| CN104033228A (en) | System and method for cooling engine pistons | |
| CN102770652A (en) | Control device of internal combustion engine | |
| CN105649807A (en) | Methods and systems for adjusting direct fuel injector | |
| CN104033261A (en) | Method and system for improving engine starting | |
| CN103485909A (en) | System and method for compensating gaseous fuel injection |
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 |