CN102852692B - For having the multiplex drive circuit of the AC ignition system of Controlled in Current Mode and Based and fault tolerance detection - Google Patents
For having the multiplex drive circuit of the AC ignition system of Controlled in Current Mode and Based and fault tolerance detection Download PDFInfo
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- CN102852692B CN102852692B CN201210334125.9A CN201210334125A CN102852692B CN 102852692 B CN102852692 B CN 102852692B CN 201210334125 A CN201210334125 A CN 201210334125A CN 102852692 B CN102852692 B CN 102852692B
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Classifications
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- 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
- F02P3/0407—Opening or closing the primary coil circuit with electronic switching means
- F02P3/0414—Opening or closing the primary coil circuit with electronic switching means using digital techniques
-
- 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
- F02P23/00—Other ignition
-
- 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
- F02P3/0407—Opening or closing the primary coil circuit with electronic switching means
- F02P3/0435—Opening or closing the primary coil circuit with electronic switching means with semiconductor devices
- F02P3/0442—Opening or closing the primary coil circuit with electronic switching means with semiconductor devices using digital techniques
-
- 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
- F02P3/05—Layout of circuits for control of the magnitude of the current in the ignition coil
-
- 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
- F02P3/05—Layout of circuits for control of the magnitude of the current in the ignition coil
- F02P3/051—Opening or closing the primary coil circuit with semiconductor devices
- F02P3/053—Opening or closing the primary coil circuit with semiconductor devices using digital techniques
-
- 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
- F02P9/00—Electric spark ignition control, not otherwise provided for
- F02P9/002—Control of spark intensity, intensifying, lengthening, suppression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
- F02D2041/2006—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening by using a boost capacitor
Abstract
A kind of multiplex drive circuit for AC ignition system, has a shared branch road, and this shared branch road includes two switches being connected in series, and one or more private driveway, and wherein each branch road includes two switches being connected in series.This multiplex drive circuit also includes the transformator of each for one or more private driveways, each transformator has the armature winding being connected between one of one or more private driveways and shared branch road, each transformator has the secondary windings being connected in parallel with spark plug, and pulsewidth modulation (PWM) switch controller is configured to operate shared branch road and private driveway to switch to control the characteristic of the spark discharge for spark plug.The time that wherein switch controller can be occurred by monitoring spark discharge event carries out diagnostic inspection in real time.
Description
The cross reference of related application
Present patent application is co-pending U.S. Patent application No.12/542,794 part continuation application, and this U.S. is special
The applying date of profit application is August in 2009 18, and all teachings of these applications and disclosure are incorporated herein by.
Technical field
The present invention generally relates to the ignition system of the internal combustion engine using spark plug, more particularly, it relates to be used for
Using the ignition system of the internal combustion engine of spark plug, and for controlling spark plug operation and the control system of inspection system fault.
Background technology
Generally, internal combustion engine includes spark plug and produces pyrophoric firing circuit, thus lighting sky in cylinder
Gas-fuel mixture.Some electromotors produce voltage using the permanent magnet being attached to rotary flyweights on charge coil.In typical case
Capacitive discharge systems in, the electric energy from low-voltage battery is supplied to electric power supply apparatus, and this electric power supply apparatus is this
Electric energy boosts as the high voltage on capacitor, this capacitor be produce on the spark gap of spark plug electric spark provide required
Voltage.Its energy is sent to the armature winding of ignition coil and the magnetic core of ignition coil by described capacitor.From ignition lead
Circle secondary windings extract energy, till capacitor and magnetic core do not have enough energy.In inductive system, from the beginning of coil
The low tension battery of level side draws energy.When the current interruptions in coil primary winding, flyback (flyback) initiation time of generation
Puncturing of level coil, extracts energy by secondary windings from ignition coil magnetic core.Either in capacitive discharge or inductance
In property discharge ignition system, energy is all in moment T1Send the magnetic of ignition coil by the electric current of ignition coil armature winding to
Core.In subsequent moment T2, from the energy production ignition coil secondary voltage and current being stored in magnetic core.Change open-circuit voltage
(OCV), the ability of current amplitude (CA) and spark duration (SD) these secondary coil characteristics all stores with wound core
Energy change relevant.But, once energy is Already in magnetic core, the characteristic of secondary coil is largely just
It is defined as any state of secondary load permission, will not change before igniting in next time.
For the design of given inductive or capacitive discharge coil, OCV, CA are directly become with the energy of storage with SD
Direct ratio.Increase with the energy being stored in magnetic core, these three values also increase.In these systems, maximum constraint is open circuit electricity
Pressure.This parameter should always sufficiently large reliably to cause spark.Accordingly, it would be desirable to the energy applying to coil has minimum energy
Amount, thus reliably produce spark.For typical inductive and capacitive discharge ignition system, the order of magnitude of OCV is 25-
40kV.Which has limited the scalable amount of CA and SD, the regulation of this scalable amount can be by applying to adjust energy realization.In addition, CA
Must increase with SD simultaneously or reduce simultaneously.In traditional inductive or capacitive discharge coil design, these parameters can not
It is independently adjusted.In order to improve the Whole Response of ignition system, it usually needs improve coil design.But, typically for given
Coil design for, to different engine operating conditions, the relation between OCV, CA and SD cannot be optimised.
As the succedaneum of inductive discharge and capacitive discharge ignition system, some engine systems are using exchange (AC)
Ignition system.In AC ignition system, generally alternating current is produced by DC-AC inverter.May adopt in this system
Inverter has several type.For example, exemplary AC ignition system includes transformator, and this transformator has centre tapped first
Level coil and the secondary coil being connected to spark plug.By capacitor to multiple windings with centre tapped primary coil
One of electric discharge, can starting arc on spark plug.Two terminals of primary coil are all connected with switch or transistor.Switch can be
Switch thus changing sense of current in primary coil between being switched on and off, and thus change the side of electric current in secondary coil
To.Can be according to the control being conducive to the mode adjusting CA the or SD time period to realize these switches.
But, AC ignition system generally using more power semiconductors than capacitive and inductive system, for example, switchs
And diode.Or, alternatively, AC igniting needs ignition coil to have more than two winding, e.g. centre cap line
The primary setting of circle.Generally, with the reduction of coil complexity, the power semiconductor being used increases, and vice versa.Due to volume
The element increasing outward and the complexity increasing provide more it may happen that the point of fault, this makes AC ignition system cost become
Height, and for reliability reduce.In addition, many AC ignition systems do not allow secondary current is carried out accurately real-time
Control, wherein secondary current determines the characteristic of spark discharge.In addition, many AC ignition systems do not have fault certainly
The function of diagnosis or the function of prediction further circuits fault.
It would therefore be desirable to have a kind of exchange ignition system, it can adopt the element more less than conventional AC ignition system with more
Low cost manufactures, and it can make simple double winding ignition coil realize igniting.Also need to a kind of ignition system, it is permitted
Permitted than traditional inductive, capacitive character changes electricity or exchange ignition system realizes the accurate real-time control of SD and CA higher degree.Separately
Outward, the ignition system of a kind of energy discovery circuit fault or estimation future malfunction probability is very useful.
The embodiment provides a kind of exchange ignition system.These and other and the advantage of the present invention, and attached
Plus creative feature, will be become readily apparent from by detailed description below of the present invention.
Content of the invention
In an aspect, An embodiment provides a kind of multiplexing for AC ignition system drives
Circuit, it has a shared branch road, and this shared branch road includes the switch of two coupled in series, and one or more special
Road, wherein each private driveway include the switch of two coupled in series.This AC ignition system is also included for one or more special
With the transformator (having the ignition coil of two windings) of each of branch road, each transformator has and is coupled in one or many
Armature winding between one of individual private driveway and shared branch road.In addition, each transformator have in parallel with spark plug
The secondary windings coupling.This AC ignition system also includes pulsewidth modulation (PWM) switch controller, and it is configured to shared of operation
Road and private driveway switch to control the characteristic of the spark discharge for spark plug.
According on the other hand, An embodiment provides a kind of programmable A C ignition system, it includes DC
Electrical bus, multiple spark plugs, each spark plug is coupled with the secondary windings of corresponding transformator.Each transformator includes tool
There is the armature winding of the first terminal, this first terminal is coupled between corresponding a pair of special switch of coupled in series.This can be compiled
Journey AC ignition system also has a pair of common switch of coupled in series, and the Second terminal of wherein each armature winding is connected to shared
Between switch, wherein common switch and each special switch are both coupled to DC bus.This AC ignition system has PLC technology
Device, it is configured to, using pulse-width modulation operation common switch and special switch, wherein control common switch and special switch bag
Include the spark discharge characteristic controlling for multiple spark plugs.In addition, Programmable Logic Controller being capable of detecting system fault.In addition, can
Programmable controller can be based on once provide energy the time span that spark event spent and predict to ignition system
Spark plug failure or situation about can not start.
When being considered in conjunction with the accompanying, other aspects of the present invention, target and advantage will become in the following detailed description
Become apparent from.
Brief description
Show several aspects of the present invention including the accompanying drawing as the part of this specification in this manual, and and
Description is used for the principle of the present invention is described together.In figure：
Fig. 1 is according to one embodiment of the invention, has the signal of the AC ignition system module of multiplex drive circuit
Figure；With
Fig. 2A and 2B is timing diagram, shows the fundamental voltage during the exemplary operation of Fig. 1 ignition system and electricity
Stream waveform；
Fig. 3 is according to one embodiment of the invention, has the frame of 16 channel AC ignition system of multiplex drive circuit
Figure.
Fig. 4 is the circuit diagram for programmable control system.
Fig. 5 includes multiple timing diagrams, show fundamental voltage during the exemplary operation of the ignition system of Fig. 4 and
Current waveform.
Fig. 6 shows the exemplary operation of the particular aspects of circuit in Fig. 4.
Fig. 7 includes multiple timing diagrams, exemplary operation when showing that in Fig. 4, circuit runs in the manner depicted in FIG. 6
The fundamental voltage of period and current waveform.
Fig. 8 shows the operation of particular aspects when fault in the circuit of Fig. 4.
Fig. 9 includes multiple timing diagrams, during the operation when showing that in Fig. 4, circuit runs in the way of shown in Fig. 8
Fundamental voltage and current waveform.
Figure 10 shows for different breakdown voltages, flows through the electric current chart of the primary coil of AC ignition system.
Although the present invention will be described with reference to certain preferred embodiment, it is not intended that limit the invention to these
Embodiment.On the contrary, in the spirit and scope of the present invention defined in the appended claims, this intention will comprise all optional sides
Case, modification and equivalents.
Specific embodiment
Fig. 1 shows exemplary exchange (AC) ignition system module 100 according to an embodiment of the invention, and it has many
Road is multiplexed drive circuit 101.Ignition system module 100 may be structured to (that is, being connected) of 3 passages with three spark plugs, or
It is two channel modules (that is, being connected with two spark plugs), and includes branch road 102 that is shared or sharing, branch road 102 has two
The switch S2 being connected in series, 104 and S3,106.First private driveway 108 has be connected in series two switch S4, and 110 and S5,
112.One terminal 103 of the armature winding 114 of the first ignition coil or transformator 116 is connected to and switchs S2, and 104 and S3,106
Between, and another terminal 105 of armature winding 114 is connected to and switchs S4, and 110 and S5, between 112.First transformator 116
Secondary windings 118 are connected in parallel with the first spark plug 120.Because the ignition coil of the present invention does not need storage as prior art
The so much energy of the ignition coil of ignition system, the ignition system of the therefore present invention may be structured to using such ignition lead
Circle, this ignition coil is substantially designed to run rather than energy accumulating device as high-tension transformer.
Two switch S6 that second private driveway 122 includes being connected in series, 124 and S7,126.Second private driveway 122 with
First private driveway 108 and shared branch road 102 are connected in parallel.The of the armature winding 128 of the second ignition coil or transformator 130
One terminal 121 is connected to and switchs S2, and 104 and S3, between 106, and the Second terminal 123 of armature winding 128 is connected to switch S6,
124 and S7, between 126.The secondary windings 132 of the second transformator 130 are connected in parallel with the second spark plug 134.
In another the triple channel embodiment of the present invention, the 3rd private driveway 136 inclusion series connection (shown in broken lines)
The two switch S8 connecting, 138 and S9,140.One terminal of the armature winding 142 of the 3rd transformator 144 (shown in broken lines)
131 be connected to switch S2,104 and S3, between 106, and another terminal 133 of armature winding 142 be connected to switch S8,138
And S9, between 140.The secondary windings 146 of the 3rd transformator 144 and the 3rd spark plug 148 are connected in parallel.
Hereafter will be apparent from, shared branch road 102 is referred to as shared or public branch road, because it can be with igniting
The more than one primary winding for spark plug of system connects.Shared branch road 102 and three private driveways 108,
122,136 are all connected in parallel.But, each private driveway 108,122,136 is all connected from different primary windings.Often
Individual armature winding is all connected from different spark plugs.
In one embodiment, switch is N-channel field-effect transistor (FET).In another embodiment, switch is gold
Belong to oxide semiconductor field effect transistor (MOSFET), In yet another embodiment, switch is insulated gate bipolar transistor
(IGBT).However, it is contemplated that other kinds of switch also is used as the switch of the embodiment of the present invention.The present invention another
In embodiment, each of one or more switches all have the diode being connected in antiparallel.
Pulsewidth modulation (PWM) switch controller 150 is connected with current sense resistor 152 and the neutral conductor 154, the neutral conductor 154
Connect with the public terminal of shared branch road 102 and private driveway 108,122,136.In one embodiment of the invention, PWM opens
Gateway controller 150 is as field programmable gate array (FPGA).When switch is MOSFET or igbt transistor, PWM on-off control
Device 150 is connected with the grid of transistor with controlling switch operation.In addition, PWM switch controller 150 may be structured to for high frequency
Operation, such as 5-55 KHz.The high-frequency operation of switch controller 150 allows the precise control to primary current level.
High coupling factor between armature winding and secondary windings means that the precise control of primary winding current leads to secondary windings electricity
Accurate, the real-time control of stream.This control of secondary winding current makes to realize the control of spark discharge characteristic (such as CA and SD)
System.Therefore, PWM switch controller 150 is configured to change these ginsengs of electric discharge during the electric discharge of specific spark occurs
Number.
In one embodiment of the invention, for producing the DC electricity of pyrophoric electric energy boost converter 162 from DC to DC
Power bus 160 draws acquisition.Boost converter 162 includes the controller 164 of Operation switch S1 166.Right by controller 164
The control of switch S1 166, controller 164 adjusts output voltage, i.e. the voltage of the DC electric power bus 160 of boost converter 162.
Battery 168 provides electric current to inducer 170.The inductor terminals 171 relative with battery 168 and diode 172 and switch S1
166 connections.Switch S1 166 is connected with current sensing resistor 173 and controller 164 again.The diode relative with inducer 170
Terminal 175 is connected with capacitor 174, DC electric power bus 160, and is connected with the Voltage Feedback line 177 being connected to controller 164.
In one exemplary embodiment of the present invention, battery 168 provides 24 volts of unidirectional currents, and it is in DC electric power bus 160
Place boosts to about 185 volts.In order to produce predetermined average current IL, using pulsewidth modulation, switch S1 166 is modulated.
Electric current ILExchange (AC) ripple component (for example, about ± 6 amperes) will be less than DC component (for example, about 34 amperes).When
During boost converter 162 " on ", electric current ILIt is continuous, constant electric current.When boost converter 162 " on ", in S1
During modulation when switching S1 166 disconnection, electric current ILThe electric current bag flowing to capacitor 174 through diode 172 will be provided.This
A little electric current bags will flow into capacitor 174, and improve the voltage on capacitor 174.Voltage Feedback line 177 is used for by controller 164
Cut off boost converter 162 at predetermined voltage level (that is, 185 volts) place.In this point, S1 modulation will stop, and switch S1 166 will
Rest on open mode.Then electric current ILZero will be begun to decrease to.As voltage VboostWhen being reduced to the second predeterminated level, boosting turns
Parallel operation 162 will be again switched on, and high frequency S1 modulation will be activated again, thus producing the suitable direct current flowing through inducer 170
(DC) electric current IL, thus firmly keeping 185 volts on the dc bus.
In order to control the spark character of spark plug 120, switch S2 104 works together with S5 112 in pairs.They connect simultaneously
Lead to or cut off simultaneously.Switch S3 106 and S4 110 also together with work in pairs, and the operation with switch S2 104 and S5 112
State is contrary.The spark plug gap of the first spark plug 120 initial ionizing by switching S3 106 and connecting of S4 110
Realize.In one exemplary embodiment, transformator 116,130,144 armature winding is of about 1 with secondary winding turns ratio:
180.When switch S3 106 connects with S4 110,185 in DC electric power bus 160 volt voltage is applied on armature winding 114.
This produces high voltage on secondary windings 118.As the voltage (V on spark plug gapSP) sufficiently high (for example from 5 to 40 kilovolts)
When, spark plug gap will ionizing occur.Now, spark plug gap seems it is no longer open circuit, and more like a Zener
Diode.As long as the secondary windings 118 of transformator 116 can exceed the Zener voltage of spark plug gap, or keep voltage, then
Spark gap will keep ionizing, and spark discharge is persistently carried out.Holding voltage on spark plug gap during spark discharge
To decline, VSPIt is reduced to the voltage between 300 volts to 3000 volts.VSPPolarity determined by the sense of current.
Identical with above-mentioned mode, switch S2 104 works together with S7 126 in pairs, and they are also turned on or cut simultaneously
Disconnected.Switch S3 106 and S6 124 also together with work in pairs, and contrary with the mode of operation of switch S2 104 and S7 126.Open
Close S2 104, S7 126, S3 106 operate to control the spark discharge characteristic of the second spark plug 134 together with S6 124.Similar
Ground, switch S2 104 works together with S9 140 (shown in broken lines) in pairs, and they are also turned on or cut off simultaneously.Switch S3
106 with S8 138 (shown in broken lines) also together with work in pairs, and with switch S2 104 and S9 140 mode of operation contrary.
Switch S2 104, S9 140, S3 106 operate to control the spark discharge characteristic of the 3rd spark plug 148 together with S8 138.
During AC ignition system works, the electric current I when switching S2 104 and connecting (closing) with S5 112PFlow through primary
Coil 114.Work as IPWhen reaching predeterminated level (such as 30 to 150 amperes), switch controller 150 cuts off S2 104 and S5 112,
It is also turned on switching S3 106 and S4 110.When switch S3 106 connects with S4 110, flow through the electric current I of armature winding 114P
Change direction, thus defining the AC operation of ignition system.Switch S3 106 and S4 110 will be retained as on-state, until
Electric current IPTill reaching predetermined value, the size of this predetermined value is equal to the amplitude of the switch peak current of S2 104 and S5 112, but
It is opposite polarity.Therefore, electric current IPThere is high frequency triangle wave shape.Flow into the electric current I of secondary windingsSHave and primary winding current
IPIdentical shape and phase place, but proportional zoom can be formed according to the turn ratio of armature winding and secondary windings.
Transformator 116,130,144 with respect to the winding of common ignition coil have the primary and secondary of low inductance around
Group.As shown in figure 1, the low inductance of the primary and secondary winding of three transformators allows primary winding current and secondary winding current
Close-coupled.Low inductance also allows for the precise control to armature winding and secondary winding current.By accurately controlling primary
Winding current, secondary winding current is also precisely controlled.
In an exemplary embodiment of the present invention, the primary inductance of transformator is about 109 microhenrys, and secondary inductance is about
3.7 is prosperous, and primary leakage inductance is about 28 microhenrys, and secondary leakage inductance is about 0.95 henry.In addition, the primary coupling factor of transformator
It is about 0.8630, secondary coupling ratio is about 0.8630, turn ratio is about 184 to 1.Flow through transformator primary and time
The time rate of change of the electric current of level winding is indicated by leakage inductance or coupling factor.Coupling factor can be determined by equation below：
1-k2=Lps/Lp=Lsp/ Ls, (1)
Wherein k is coupling factor, LpIt is primary inductance during secondary open circuit, LsIt is secondary inductance during primary open, Lps
It is the primary inductance (leakage at primary) during secondary short circuited, LspIt is secondary inductance (the letting out at secondary during primary short
Leakage).This sets the frequency of oscillation of given electric current setting.With the increase of current value, frequency reduces.When being couple to 185 volts of volumes
When determining bus, it is reduced to 65mA (rms) with output current level from 300mA (rms), the frequency of oscillation of transformator is from about existing
12kHz is to about in 55kHz.With regard to inductance mentioned herein and coupling factor, the meaning of " about " is plus-minus 25%, because very
Multifactor can affect these values, including interwinding capacity, Kelvin effect, approach effect, measuring method and product differentiation.
In another exemplary embodiment of the present invention, the primary inductance of transformator is of about 246 microhenrys, secondary inductance
It is of about 8.11 henries, primary leakage inductance is about 61 microhenrys, secondary leakage inductance is about 2.04 henries.In addition, the primary of transformator
Coupling factor is about 0.8672, and secondary coupling ratio is about 0.8651, and turn ratio is about 182 to 1.When being couple to 185 volts
During nominal bus, it is reduced to 65mA (rms) with output current level from 300mA (rms), the frequency of oscillation of transformator is from about
In 5kHz to about in 29kHz.
Fig. 2A and 2B is timing diagram, shows the fundamental voltage of the expected during the operation in Fig. 1 ignition system module 100
And current waveform.ILWaveform 202 shows the input current flowing to boost converter.Little ripple in this letter simulation data
Inconspicuous.Notice ILStop when the time being equal to zero.As voltage VboostWhen decreasing below 180 volts, ILBegin to turn on, or even
I after spark stops at 1 millisecondLAlso constant conduction.Electric current ILFlowing is until VboostReturn to 185 volts.
VboostWaveform 204 shows 185 volts of DC output voltages of boost converter.Have during the heavy load of ignition event
Some voltages decline.But, the basic conception of this programme is voltage VboostFor steady state value.Voltage shown in analogous diagram declines
The result of nonideal or actual supply of electric power design alternative.
Cur_Cmd waveform 206 shows primary current IPThe AC amplitude of instruction.It should be noted that electric current IPPeak value correspond to
Cur_Cmd track.It should also be noted that as shown in Figure 2 A and 2B, with corresponding, almost summary responses IP, Cur_Cmd is almost
Can immediately be changed.
S2, S5 instructional waveform 208 shows the state of switch S2 104 and S5 112.When signal is+1 (high), switch
104,112 closures.When signal is -1 (low), switch 104,112 disconnection.S3, S4 instructional waveform 210 shows switch S3 106
State with 110 S4.When signal is+1 (high), switch 106,110 conducting.When signal is -1 (low), switch 106,110
Disconnect.It should be noted that S2, S5 instructional waveform 208 and S3, the phase place difference of S4 instructional waveform 210.
IPWaveform 212 shows ignition coil primary current.It should be noted that this electric current has triangle AC shape.This AC
The amplitude of electric current is determined by Cur _ Cmd signal.The frequency of this AC electric current is Vboost, the result of LP and Cur_Cmd.With Cur_
The increase of Cmd amplitude, frequency reduces.It it is of about 100 amperes puncturing period Cur_Cmd.After puncturing, Cur_Cmd changes to
About 50 amperes.In 600 μ sec and 800 μ sec, Cur_Cmd changes, IPCorrespondingly change.
VSPWaveform 214 shows the voltage at sparking-plug electrode.It should be noted that puncturing in this emulation occurs about 35
Kilovolt.Afterwards, VSPIt is reduced to the holding voltage that amplitude under this simulation scenarios is about 1000 volts.It should also be noted that VSPPole
Property is by electric current ISDirection determine.
Electric current ISWaveform 216 is IP(that is, triangular wave) is according to the reflection of the proportional scaling of turn ratio in ignition coil.Electricity
Stream ISAnd the ability immediately changing its amplitude is the feature of embodiment illustrated in fig. 1.It should be noted that the first negative peak is at a relatively high simultaneously
And follow Cur_Cmd waveform 206.After puncturing, Cur_Cmd reduces, ISAmplitude also correspondingly reduce.In about 600 μ sec,
Cur_Cmd gradually uprises, electric current ISAmplitude be also such.In about 800 μ sec, Cur_Cmd changes again, electric current IS?
It is such.In about 1000 μ sec, Cur_Cmd vanishing, electric current ISStopping is followed.This leads to the termination of spark.
In the present invention, the programmability of spark flash-over characteristic allows to select in a wide range CA and SD.For example, the present invention
It is in the range of 0.1 to 4.0 milliseconds that one embodiment allows spark discharge time programming, and CA is programmed in 50 to 1000 millis
In the range of peace.Therefore this allows single igniting system design to be applied to multiple different electromotor designs and configuration.With pin
Different with manufacturing a series of entirely ignition systems to the design of different electromotors, an ignition system of embodiments of the invention design
Design can be programmed to can work together with the electromotor of different model.This programmability can be by programmable device or controller
Software section ground or integrally realize.
The programmability of ignition system described herein is conducive to the more long life of spark plug used in system.
During the life-span of electromotor, changing spark plug is expensive and time-consuming aspect during electromotor integrally maintains.In common spark
In plug, spark gap increases with export license.Of long duration, this causes punch through voltage and keeps voltage to increase.Other because
Element, for example, can puncture mean effective pressure and can also affect operating mode in cylinder with what engine load increased, includes electromotor and works
The spark discharge characteristic of period.The specific electromotor ginseng of impact spark discharge characteristic can be changed for a user on one's own initiative
Number.The change of the change of parameter, such as these parameters, can be switched on and off controller 150 and detect, and it is then during spark discharge
Increase energy to spark, if necessary, spark character is maintained in acceptable operation restriction.This pass through primary and
The close-coupled of secondary current is realizing.In an embodiment of the present invention, the real-time control secondary electrical by control primary current
Stream.
In another embodiment, PLC technology is that FPGA is configured to control the electric current in primary coil and detection electricity
Road fault.Fig. 4 shows FPGA control circuit 400 and the single rank of the multiplex drive circuit for AC ignition system
Section.Even if merely illustrating the single stage, the control circuit of design can also control other stages.The output signal of FPGA407
IREF_HI_1 and IREF_HI_2 is connected respectively to low pass filter 401 and 402.Low pass filter 401 and low pass filter 402
Output be couple to together with IREF_HI_SELECT switch 403 input.The output of switch 403, is also designated as
CurrCmdPeak, is coupled to the positive input terminal of comparator 404.The negative terminal of input comparator 404 is V_IFB.Comparator
404 output is _ IFB_PK, and it is connected as input to FPGA407.
IREF_HI_1 and IREF_HI_2 is pulsewidth modulation (PWM) control signal, and it sets for the electric current of primary ignition coil
Determine threshold value.FPGA control circuit 400 passes through to set IREF_HI_SELECT, IREF_HI_1 and IREF_HI_2 before ignition event
Suitable dutycycle controlling the electric current in primary ignition coil.Low pass filter 401 and 402 pwm signal IREF_HI_1
Be converted to D/C voltage command value with IREF_HI_2, and IREF_HI_SELECT controlling switch 403.IREF_HI_SELECT allows
FPGA control circuit 400 switches between two D/C voltage command value IREF_HI_1 and IREF_HI_2 immediately.Then utilize than
Selected D/C voltage command value is made to be compared with V_IFB compared with device 404.V_IFB represents the voltage recording on resistance 416, its
It is directly proportional to the electric current flowing through primary ignition coil 415.Therefore, whenever V_IFB reaches the D/C voltage command value of regulation (after filtering
IREF_HI_1 or IREF_HI_2) when, the output _ IFB_PK of comparator 404 will instruct FPGA407 switching multiplexing and drive
Switching network in circuit, this has discussed above.
In addition, IREF_HI_SELECT can select between IREF_HI_1 and IREF_HI_2 immediately.Follow in initial ignition
During ring, the pwm signal that FPGA407 can change IREF_HI_1 and IREF_HI_2 is suitable for change in whole ignition system
Operating mode.For example, IREF_HI_SELECT can start ignition cycle using IREF_HI_1, and is switched to during ignition cycle
IREF_HI_2.When being currently operating in IREF_HI_2, FPGA407 can change the dutycycle of the pwm signal of IREF_HI_1 with
Produce another for the control point of the switching network in multiplex drive circuit.
Multiple timing diagrams that Fig. 5 comprises show the expected during the operation fundamental voltage of the FPGA control circuit 400 of Fig. 4
Example with current waveform.IPWaveform 502 illustrates the electric current in primary coil 415.It should be noted that how the peak value of waveform is
The accurate peak value in response to V_IFB waveform 508.
V_IFB waveform 508 shows electric current IP502 and resistance 416 on voltage between relation.It is superimposed upon V_IFB ripple
Shape 508 top is the CurrCmdPeak being set by the IREF_HI_SELECT from FPGA407.
S2, S5 instructional waveform 504 shows the drive signal for S2 411 and S5 412 being produced by FPGA407.S3,
S4 instructional waveform 506 shows the drive signal for S3 413 and S4 414 being produced by FPGA407.It should be noted that two
How waveform has accurately contrary phase place, when V_IFB reaches one of each CurrCmdPeak level, occur from height to
The transformation from low to high of low one-tenth.
_ IFB_PK waveform shows the output of comparator 404 in Fig. 4.When V_IFB waveform is more than CurrCmdPeak, _
IFB_PK waveform reduces, and FPGA407 is meaned reached desired peak current threshold.Now, FPGA407 switching S2,
S5 instructional waveform 504 and S3, S4 instructional waveform 506, thus change the working condition of switching network.
IREF_HI_SELECT waveform 512 shows FPGA407 command signal, and this signalisation switch 403 is in IREF_
Switch between HI_1 and IREF_HI_2, this sets the new level of CurrCmdPeak.It should be noted that in V_IFB waveform 508
The CurrCmdPeak line of middle superposition shows this relation.
In addition, FPGA control circuit 400 has diagnosis capability.FPGA control circuit 400 can detect various faults,
Including：Short-circuit conditions on primary coil 415；Open circuit situation on primary coil 415；Primary ignition coil 415 positive or negative
(PRI+ and PRI-) short-circuit conditions between side and ground.
In the diagram, FPGA control circuit 400 includes comparator 405,406 and 408.CurrentCmdMid is FPGA
PWM output signal, it flows through low pass filter 422, produces a DC reference voltage, and this DC reference voltage is couple to comparator
405 positive input terminal is used for being compared with V_IFB, and V_IFB is couple to the negative input end of comparator 405.CurrentCmdLo
It is another PWM output signal of FPGA, it flows through low pass filter 424, produce a DC reference voltage, this DC reference voltage
The positive input terminal being couple to comparator 406 is used for being compared with V_IFB, and V_IFB is couple to the negative input end of comparator 406.
CurrSDLevel is another PWM output signal of FPGA, and it flows through low pass filter 420, produces a DC reference voltage,
The positive input terminal that this DC reference voltage is couple to comparator 408 is used for being compared with V_HS, and V_HS is couple to comparator 406
Negative input end.The output of comparator 405,406 and 408 is respectively _ IFB_MID, _ IFB_LO and _ ISD.
Substantially, CurrSDLevel, CurrCmdMid, CurrCmdLo produce the voltage ginseng being compared with systematic parameter
Examine parameter.Specifically, the systematic parameter being compared is that (it corresponds to primary coil 415 for voltage (V_IFB) on resistance 416
In electric current), and voltage (V_HS) on resistance 410 (it corresponds to the electricity of the primary coil flowing through current transformer 409
Stream).In the diagram, they are shown as obtaining from FPGA407, but voltage reference points can also be from single DC reference circuit
Obtain.Respectively as comparator 408, comparator 405 and comparator 406 output _ ISD, _ IFB_MID and _ IFB_LO be logical
Know that the electric current in FPGA407 primary coil 415 has reached the signal of some prescribed levels.
Specifically, _ IFB_LO is the trigger of input FPGA407, and the electric current in its instruction primary coil 415 is
Reach predetermined low-level.Fig. 5 _ IFB_LO waveform 516 shows this function.It should be noted that working as V_IFB waveform 508
Across produce voltage reference lines superposition CurrCmdLo when, _ IFB_LO be how to be changed into from height low.Similarly, _
IFB_MID is the trigger of input FPGA407, and the electric current in its instruction primary coil 415 has reached predetermined medium
Level.Fig. 5 _ IFB_MID waveform 514 shows this function.It should be noted that when V_IFB waveform 508 is across the voltage producing
During the CurrCmdMid of the superposition of reference line, _ IFB_MID be how to be changed into from height low.
_ ISD is when from power supply VboostObtain the trigger notifying FPGA407 during excessive electric current.In order to produce this letter
Number, in comparator 408, the DC reference signal producing from CurrSDLevel is compared with V_HS.V_HS is on resistance 410
Voltage, as shown in figure 4, this voltage reflects the electric current of the primary coil flowing through current transformer 409.
During AC ignition system 400 normal work, draw the other parts of electric current feed system from power supply.Flow through electric current
The electric current of transformator 409 primary side induces electric current in the primary side of current transformer 409, and then produces electricity on resistance 410
Pressure.Thus producing the V_HS used by comparator 408.
By monitoring _ IFB_MID, _ IFB_LO and _ ISD, FPGA407 can detect above-mentioned fault.Specifically
Say, the short-circuit conditions on primary coil 114 can be all early than expected triggering ground and detect by _ IFB_LO and _ IFB_MID.
Open circuit situation on primary coil 114 can be never triggered and be detected by _ IFB_LO and _ IFB_MID.Primary ignition line
Short-circuit conditions between the circle negative side of (being shown as PRI- in Fig. 4) and ground can be uprised and be detected by _ ISD.This is because
Short-circuit conditions between PRI- and ground will make to obtain excessive electric current thus triggering _ ISD from power supply.
Another possible fault is short-circuit conditions and ground between for the PRI+ (see Fig. 4).As herein described concrete
In embodiment, between PRI- and ground, the failure condition of short circuit is by comparator 408 (see Fig. 4) detection.But, similar PRI+ with
Between ground, the failure condition of short circuit cannot be detected, because switch S3 413 and S4 414 is always first switched on
(asserted).Due to this selection, electric current will always first flow through current transformer and flow into switch S4 414, then pass through primary
Coil 415, then passes through switch S3 413 and flows to resistance 416, finally flow into ground.As FPGA407 ON switch S2 411 and S5
412 and cut off (deassert) switch S3 413 and S4 414 when, due in ignition coil primary 415 flowing electricity
Stream, the electric current of current transformer 409 will be forced step change immediately, and ignition coil primary 415 is bigger than current transformer 409
Inductance much.This step change of current transformer 409 electric current has the composition of very high frequency, and it can be 409 and 410
Resonance is excited in circuit.This can lead to serious ringing effect to be back in current transformer 409, thus providing the voltage of mistake
Measured value V_HS.In fact, the circuit kinetics just having described are so that _ ISD is useless in this concrete condition.
This circuit can work in the case that switch S2 with S5 always connects first.This makes it possible to pass through _ ISD discovery
The failure condition of the short circuit from PRI+ to ground, but the failure condition of the short circuit from PRI- to ground will be difficult to find.
In order to switch detection mistake when S3 413 connects first with S4 414, the operation of AC ignition system is slightly different,
As shown in Figure 6.It should be noted that switch S2 411, S3 413, S4 414 and S5 412 are switch mosfets, shape as depicted
State 0 602.Although showing switch mosfet, can using any be two-way for voltage for unidirectional and for electric current
Switch.Specifically, it is possible to use the body diode effect to imitate MOSFET for the parallel combination of IGBT and diode, this is at this
It is known in field.
During not having the exemplary operation of any fault, AC ignition system is operated as follows.With before
Similar, an AC ignition cycle by the conducting of S3 413 and S4 414, state 1 604 as depicted.Reach peak value electricity
After stream, S3 413 and S4 414 are turned off, and start second switch circulation.But, different from conducting switch S2 411 and S5 412
, all switch S2 411, S3 413, S4414 and S5 412 are maintained at scram position.Now, negative current is had to flow through
Primary coil 415.When the short circuit that four switch mosfets all turned off and do not had exception occurs, switch mosfet S2 411
Carry out rectification with the body diode of S5412, make the electric current of primary coil 415 flow through S2 411 and S5 412 structure, similar to opening
Close the on-state of S2 411 and S5 412, state 2 606 as depicted.Body diode due to S2 411 and S5 412 enters
Row rectification, the voltage being applied on primary coil 415 is equal to Vboost, VboostDrive normal current to flow through primary coil 415 again,
If S2 411 and S5 412 is switched on, will be it is observed that above-mentioned situation.The flowing of reverse current will be very of short duration, therefore
Once _ IFB_LO comparator sends the signal flowing through the activity as expected of the electric current of primary coil 415 to FPGA407 (see Fig. 4), open
Close S2 411 will actually be connected by FPGA control circuit 400 with S5 412, state 3 608 as depicted.
Fig. 7 illustrates the normal operating of this additional step.It should be noted that in S3, after S4 instructional waveform 706 is cut off, S2, S5
Instructional waveform 704 is in and S3, S4 instructional waveform 706 identical state, until the trailing edge display stream of _ IFB_LO waveform 714
The electric current crossing primary coil 412 is movable as expected.Now, S2, S5 instructional waveform 704 and S3, S4 instructional waveform 706 recovers them
Normal work.
When short-circuit conditions actually occur at terminals P RI+ (see Fig. 4) and ground between when, extra mode of operation is attached to
Different current characteristics will be led on two switching intervals.Fig. 8 describes the behaviour of AC ignition system in the presence of this specific fault
Make.State 0 802 shows short-circuit conditions 801.Behind first switch interval, state 1 804 shows, in primary coil 415
There is negative current.As S2 411, when the control signal of S5 412, S3413, S4 414 is all cut off, short-circuit conditions 801 would not allow for
S2 411 body diode self-rectifying, this will lead to the electric current from S5 412 body diode to flow to ground, such as state 2 by short dot
Shown in 806.The other current path that short-circuit conditions lead to will lead to the curent change of the relative time flowing through primary coil 415
(di/dt) much smaller, this will be occurred without by control signal _ IFB_LO and _ IFB_MID trailing edge or very late appearance and examine
Measure.
Timing diagram shown in Fig. 9 show exist PRI+ to ground short-circuit conditions when circuit operation.It should be noted that working as
When S3, S4 instructional waveform 906 is connected, how the electric current in primary coil 415 works as expected, such as IPShown in 902.But
During state 2 806, when all switches are maintained at scram position, the electric current in primary coil 415 is unlike its normal work
Performance when making is such.Due to short-circuit conditions 801, IPSubstantially reduce the change of its relative time；Therefore V_IFB can not or
At least very slowly reaching makes comparator 405 or comparator 406 leads to the _ level that reduces of IFB_MID or _ IFB_LO, such as V_IFB
Shown in waveform 908.Therefore, when _ IFB_MID or _ IFB_LO is triggered when having spent the long time in FPGA407, detect PRI
+ to ground short-circuit conditions 801.
The process of the failure condition from PRI+ to Di Ju road for the detection does not need to carry out in each ignition cycle.FPGA controls
Circuit 400 can implement this process in the circulation of interval.
Except testing circuit fault, FPGA control circuit 400 can also detect the spark of the part as AC ignition system
The deterioration of the spark gap of plug.Time one is long, and with the Reusability of spark plug, spark interval will slowly be corroded.Spark interval
Become due to corrosion big, so that the gas breakdown between sparking-plug electrode or the voltage needed for ionizing is increased.The electricity of this increase
The increase of time needed for pressure demand reaches its peak value with primary current is associated, such as comparator 404 _ IFB_PK output
Shown (see Fig. 4).FPGA control circuit 400 can monitor _ IFB_PK be switched on required for time, and by itself and inquiry table
Or in itself previously known mathematical function is associated.
Figure 10 shows an example of above-mentioned relation.Specifically, Figure 10 illustrates multiple waveforms, and these waveforms represent right
Ying Yu be applied to different breakdown voltage on spark gap (15kV 1002,20kV 1004,25kV 1006,30kV 1008,
35kV 1010,38kV 1012) and flow through the electric current of primary coil 415 (see Fig. 4).And, in the situation shown in waveform 1014
Ignition system is unable to disruptive spark plug gap.Figure 10 shows and increases with breakdown voltage, the peak value (_ IFB_PK) of primary current
Extending in time becomes more late.Without puncturing, as shown in waveform 1014, flow through the electric current phase of primary coil 415
Significantly less than situation about puncturing during generation to the rate of change of time (as waveform 1002,1004,1006,1008,1010 and 1012
Shown).
Value in Figure 10 is although show the operation of system, but by no means implies that the restriction to system operatio.And,
It is shown as -100 amperes although puncturing and flowing through the electric current of primary coil 415 during generation, the value of gamut can.
In addition, this technology can be used not only to determine spark plug corrosion, and can be used for detecting AC ignition system 419 (see
Fig. 4) the situation about can not starting of primary side.In this case, FPGA control circuit 400, by detection _ IFB_PK, by energy
Enough the electric current in detection primary coil reaches the situation of peak value overspending time, or can detect and can not reach peak point current
Situation.FPGA control circuit 400 detection _ IFB_PK is switched on before time, when this time be more than corresponding in inquiry table
During time value, FPGA control circuit will detect situation about can not starting.
It should be noted that in the whole description of the embodiment of above-mentioned control system, prefix " _ " occur in _ ISD, _ IFB_PK, _
In IFB_MID and _ IFB_LO signal, represent that they are effectively for signal.This is not intended to limit aforementioned signal need not
Must not be the effective low signal of AC ignition system to realize desired function.Accordingly, there exist _ ISD, IFB_PK, IFB_MID and
IFB_LO signal is not the second embodiment of effective low signal.
Above-mentioned control system is operable in the ignition system of several types.Although the embodiment description before all
Control system be used for AC ignition system, but can be used for DC ignition system.For example, above-mentioned control system is applied to
PWM DC ignition system has DC output current and MOSFET and substitutes the diode network of half-bridge switch network (as herein
The AC system of description is such).
In addition, this control system is also applied for various engines type.For example, at one, there is starting of 16 spark plugs
On machine, multiplexing 16 channel system channel AC ignition system include 16 private driveways with 32 switches, typically
There are six shared branch roads of 12 switches.When switch is embodied as N- passage FET, drive patrolling switch controller using door
Collect the driving level being converted to enough to Operation switch.In one embodiment, 22 half-bridge drivers are used for driving 16 access points
44 FET in fiery system.Each shared branch road is coupled to corresponding boost converter, and whole 44 switches can be by one
PWM controller is controlled, and its operation was generally described before.
In reciprocating engine, cylinder is generally lighted a fire in a predefined order.May there is weight between therefore adjacent igniting
Folded.This overlapping probability increases with the increase of number of cylinders, increases with the growth of spark duration, for
For the electromotor of asymmetric ignition order, probability is bigger.For example, there are 16 cylinder four-stroke electromotors of symmetrical ignition order
Igniting output carry out every 45 degree, i.e. 720 degree/16=45 degree.In 1800RPM, 1 degree=92.59 microseconds, lead to be output as
Every 4.167 milliseconds of igniting are once.If the maximum spark persistent period is such as 2 milliseconds, between each igniting, will there is no overlap.
But, 16 Cylinder engines with 15-75 asymmetric ignition order there may be such igniting overlap.?
1800RPM, has 1.39 milliseconds i.e. 15 degree overlapping between these ignition orders.In this case, if spark duration is 2 millis
Second, some overlaps are possible.Exemplary 16 channel ignition system 300 shown in Fig. 3 have four Fig. 1 shown types 3 lead to
Road ignition system module 302, module therein includes elements shown in phantom.Ignition system 300 also includes class shown in two Fig. 1
2 channel ignition system modules 304 of type, wherein this module does not include elements shown in phantom.Four 3 channel ignition system modules
302 and two 2 channel ignition system modules be connected to 16 spark plugs of electromotor 306.Traditional non-multiplexed AC igniting
System may need 64 switches (four, each spark plug) to operate 16 Cylinder engines 306.But, ignition system 300 many
Road repeatedly used features allow that same 16 Cylinder engines 306 utilize 44 switchs.Ignition system module 302, special of 304
Road uses 32 switches, and the shared branch road in those modules uses 12 switches.Common switch controller 150 (being shown in Fig. 1)
Can be used for operating whole 44 switches.
This design breaker in middle controller 150 accurately adjusts the levels of current in the armature winding of each transformator, this
Plant design to allow to control CA independent of SD, the OCV simultaneously maintaining like.Additionally, embodiments of the invention are intended to before enforcement
State the design not adopting costliness while ignition system feature, do not adopt centre-tapped transformer, high pressure, high current half
Conductor, resonance circuit or high energy storage ignition coil.
All lists of references including publications, patent applications and patents cited herein all close with references manner
It is incorporated herein, reaching such as each list of references is individually and to refer in particular to be shown as integrating with the application with references manner simultaneously
And its full text same degree set forth herein.
Term " one " used in the description present disclosure content of following claims (especially), " one " and
" being somebody's turn to do " and similar term shall be interpreted as including odd number and plural number, unless otherwise indicated herein or otherwise clearly contradicted.Term
"comprising", " having ", " inclusion ", " containing " shall be interpreted as open-ended term (i.e. it is meant that " including but not limited to "), unless
It is otherwise noted.Numerical range listed herewith is only used as indicating respectively the side of writing a Chinese character in simplified form of each the independent numerical value falling into described scope
Method, unless otherwise indicated herein, and each independent numerical value combines in the description just as its here illustrates respectively.Herein
Described all methods can execute in any suitable order, the obvious lance unless otherwise indicated herein or with context
Shield.Any example provided herein or exemplary language (for example, " such as ") are only used for preferably describing the present invention, and not
For limiting the scope of the present invention, Unless Otherwise Requested.Language in description should not be regarded as indicating for enforcement originally
Invention is necessary, the element of any failed call protection.
There has been described the preferred embodiments of the present invention, including the known best mode for executing the present invention of inventor.
When reading described above, the change of these preferred embodiments will be apparent to the person skilled in the art.This
Inventor wishes that technical staff suitably applies this change, and the present inventor expects that the present invention can be with except special herein
Not Miao Shu beyond mode implement.Therefore, the present invention includes whole modifications and the equivalent of theme described in claims, described
Claims are attached in the application in the case of applicable law permission.And, the present invention includes said elements in its institute
Any combinations in being possible to deform, unless here indicates otherwise or otherwise clearly contradicted.
Claims (28)
1. a kind of exchange AC igniter, including：
Switching network, is configured to semi-bridge type structure；
Ignition transformer, has the primary coil attached as the load of switching network；
Controller, is configured to controlling switch network；
Comparator network, is configured to be compared AC ignition system parameter with reference parameter；Wherein comparative result instruction control
Device processed how Operation switch network.
2. AC igniter as claimed in claim 1, the systematic parameter being wherein compared in comparator network and reference
Parameter is voltage.
3. AC igniter as claimed in claim 1, wherein produces described reference parameter by controller.
4. AC igniter as claimed in claim 1, wherein controller are configured to set command value, this command value instruction stream
Cross the peak point current of the primary coil of ignition transformer.
5. AC igniter as claimed in claim 4, wherein controller is configured to immediately change command value.
6. AC igniter as claimed in claim 1, wherein also includes power supply and current sensor, and current sensor is constructed
Between power supply and switching network, current sensor is configured to provide and is drawn into the current related of switching network from power supply
Systematic parameter.
7. AC igniter as claimed in claim 6, the output of wherein comparator network is the input to controller.
8. ignition transformer is flow through in the determination of AC igniter as claimed in claim 7, wherein monitoring control devices comparator network
The electric current of primary coil reached time of low spot value and midrange, this low spot value and midrange are indicated by reference parameter.
9. AC igniter as claimed in claim 7, wherein monitoring control devices draw excess from power supply compared with reference parameter
The situation of electric current.
10. AC igniter as claimed in claim 1, the secondary coil of wherein ignition transformer is connected with spark plug, wherein
The electric current of moment to the primary coil flowing through ignition transformer that monitoring control devices are activated from AC igniter reaches instruction electricity
Spent time amount during flow horizontal, then this time quantum is for being associated with when spark plug discharges.
11. AC igniters as claimed in claim 1, the switching network being wherein configured to semi-bridge type structure is included for electricity
Press as unidirectional and be two-way switch for electric current.
A kind of 12. methods for controlling ignition system, comprise the steps：
The systematic parameter of measurement initial ignition circulation；
The reference parameter of systematic parameter and ignition system is compared；
If the comparative result of systematic parameter and reference parameter is shown in the load of switching network has reached peak point current,
Change the mode of operation of switching network；
Wherein change a subsequent current cycle in the load of step trigger switch network of mode of operation of switching network.
13. methods as claimed in claim 12, also include changing the instruction of the peak point current in the load of configuration switch network
The step of the reference parameter of value.
14. methods as claimed in claim 12, wherein reference parameter are corresponding to the low current value in the load of switching network
Desired voltage, the intermediate current between the preferable low current in the load of switching network and desired peak current, switching network
Load in desired peak current, and supply switching network preferable maximum current value；Wherein systematic parameter is and switch
The voltage of the corresponding measurement of the electric current in the load of network, and the electricity of measurement corresponding with the electric current being supplied to switching network
Pressure.
15. methods as claimed in claim 14, wherein comparison step will be corresponding with the desired peak current in ignition system
Voltage is compared with the voltage of the corresponding measurement of the electric current in the load with switching network.
16. methods as claimed in claim 14, also include the step diagnosing the fault in ignition system.
17. methods as claimed in claim 16, the step of wherein tracing trouble includes, instruction in comparison step be supplied to
The step that the voltage of the corresponding measurement of the electric current of switching network is more than the ideal maximum value of electric current being supplied to switching network.
18. methods as claimed in claim 16, wherein comparison step also include measuring a time period, this time period be for
The ignition cycle of the voltage of measurement corresponding with the electric current in the load of switching network starts from the load of switching network at least
One preferable low-voltage is increased to preferable medium voltage, is increased to desired peak electricity from the preferable low-voltage of the load of switching network
Pressure, or it is increased to, from the preferable medium voltage of the load of switching network, the time that desired peak voltage is spent, wherein diagnose
Step include indicating the time of measuring that obtains from measuring process occurs must be fast, more longer than desired than expection, and/or from nonevent step
Suddenly.
19. methods as claimed in claim 14, the load of wherein switching network is the primary coil of ignition transformer, wherein secondary
Level coil is attached to spark plug；Wherein comparison step also include measure from start corresponding with the electric current the load of switching network
The step that the ignition cycle of voltage reaches the time that the desired peak current in the load of switching network is spent, and store institute
The time of measurement.
20. methods as claimed in claim 19, also include the step determining the erosion levels of spark gap of spark plug.
21. methods as claimed in claim 20, the step of wherein determination erosion levels is passed through will be from initial ignition event to fire
The time of measuring puncturing of the spark gap of Hua Sai with for representational spark plug representational spark gap various
The reference value that erosion levels puncture this representational spark gap spent time amount is associated and realizes.
22. methods as claimed in claim 21, wherein said reference value is comprised in inquiry table.
23. methods as claimed in claim 19, the time of this measurement is compared with predetermined time period, if the time of this measurement
Exceed predetermined time period, then situation about can not starting occurs.
24. methods as claimed in claim 12, wherein switching network are semi-bridge type switching networks.
25. methods as claimed in claim 12, wherein ignition system are exchange AC ignition systems.
26. methods as claimed in claim 25, the switching network of wherein AC ignition system is semi-bridge type switching network.
27. methods as claimed in claim 12, wherein ignition system are direct current DC ignition systems.
28. methods as claimed in claim 27, the output current of wherein this DC ignition system is DC value, and switching network is
MOSFET and diode network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611216214.8A CN106593742B (en) | 2011-07-01 | 2012-06-29 | Multiplex drive circuit for the AC ignition system with Controlled in Current Mode and Based and fault tolerance detection |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/175,311 | 2011-07-01 | ||
| US13/175,311 US8931457B2 (en) | 2009-08-18 | 2011-07-01 | Multiplexing drive circuit for an AC ignition system with current mode control and fault tolerance detection |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611216214.8A Division CN106593742B (en) | 2011-07-01 | 2012-06-29 | Multiplex drive circuit for the AC ignition system with Controlled in Current Mode and Based and fault tolerance detection |
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| Publication Number | Publication Date |
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| CN102852692A CN102852692A (en) | 2013-01-02 |
| CN102852692B true CN102852692B (en) | 2017-03-01 |
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| CN201210334125.9A Expired - Fee Related CN102852692B (en) | 2011-07-01 | 2012-06-29 | For having the multiplex drive circuit of the AC ignition system of Controlled in Current Mode and Based and fault tolerance detection |
| CN201611216214.8A Expired - Fee Related CN106593742B (en) | 2011-07-01 | 2012-06-29 | Multiplex drive circuit for the AC ignition system with Controlled in Current Mode and Based and fault tolerance detection |
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| CN (2) | CN102852692B (en) |
| DE (1) | DE102012105797A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593742A (en) * | 2011-07-01 | 2017-04-26 | 伍德沃德公司 | Multiplexing drive circuit for AC ignition system with current mode control and fault tolerance detection |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5912208B1 (en) * | 2014-06-06 | 2016-04-27 | 新電元工業株式会社 | Ignition device |
| WO2018217883A2 (en) * | 2017-05-23 | 2018-11-29 | Pass & Seymour, Inc. | Arc fault circuit interrupter |
| CN113161870B (en) * | 2021-04-15 | 2022-12-02 | 常州易控汽车电子股份有限公司 | Spark plug discharge time detection system |
| CN113311363B (en) * | 2021-04-21 | 2023-04-18 | 潍柴动力股份有限公司 | Method, device, equipment and medium for diagnosing open-circuit fault of secondary coil of engine |
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| CN1162068A (en) * | 1996-01-26 | 1997-10-15 | 株式会社三叶 | Ignition control system |
| CN1240252A (en) * | 1998-06-19 | 2000-01-05 | 杜卡提·恩勒基公司 | Phase-controlled voltage regulator for motor vehicles and method |
| CN1332895A (en) * | 1998-12-23 | 2002-01-23 | 冠军航天股份有限公司 | Inductive ignition circuit |
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| JPS5634964A (en) * | 1979-08-31 | 1981-04-07 | Nippon Soken Inc | Ignition device |
| JP3114120B1 (en) * | 1999-09-21 | 2000-12-04 | 阪神エレクトリック株式会社 | Ignition system |
| DE102004056844A1 (en) * | 2004-11-25 | 2006-06-01 | Daimlerchrysler Ag | Fast multiple spark ignition |
| JP5201321B2 (en) * | 2007-12-04 | 2013-06-05 | 富士電機株式会社 | Igniter system |
| US8276564B2 (en) * | 2009-08-18 | 2012-10-02 | Woodward, Inc. | Multiplexing drive circuit for an AC ignition system |
| CN102852692B (en) * | 2011-07-01 | 2017-03-01 | 伍德沃德公司 | For having the multiplex drive circuit of the AC ignition system of Controlled in Current Mode and Based and fault tolerance detection |
-
2012
- 2012-06-29 CN CN201210334125.9A patent/CN102852692B/en not_active Expired - Fee Related
- 2012-06-29 DE DE102012105797A patent/DE102012105797A1/en not_active Withdrawn
- 2012-06-29 CN CN201611216214.8A patent/CN106593742B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162068A (en) * | 1996-01-26 | 1997-10-15 | 株式会社三叶 | Ignition control system |
| CN1240252A (en) * | 1998-06-19 | 2000-01-05 | 杜卡提·恩勒基公司 | Phase-controlled voltage regulator for motor vehicles and method |
| CN1332895A (en) * | 1998-12-23 | 2002-01-23 | 冠军航天股份有限公司 | Inductive ignition circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593742A (en) * | 2011-07-01 | 2017-04-26 | 伍德沃德公司 | Multiplexing drive circuit for AC ignition system with current mode control and fault tolerance detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106593742A (en) | 2017-04-26 |
| CN102852692A (en) | 2013-01-02 |
| CN106593742B (en) | 2019-09-24 |
| DE102012105797A1 (en) | 2013-01-03 |
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