CN104806401B - Multi-functional fuel injector drive control device - Google Patents
Multi-functional fuel injector drive control device Download PDFInfo
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- CN104806401B CN104806401B CN201510248238.0A CN201510248238A CN104806401B CN 104806401 B CN104806401 B CN 104806401B CN 201510248238 A CN201510248238 A CN 201510248238A CN 104806401 B CN104806401 B CN 104806401B
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Abstract
The present invention relates to a kind of multi-functional fuel injector drive control device, it contains interface protection module, main control module, predrive module, drive module, boost module and power management module, the fuel injector control signal of the electronic control unit output of automobile is input to main control module after interface protection module, the drive signal of main control module output enters drive module after predrive module, drive module control fuel injector work, the fuel injector current detection signal of drive module output feeds back to main control module after predrive module, boost module provides high voltage for predrive module and drive module, power management module is interface protection module, main control module, predrive module, drive module and boost module power supply；The invention provides a kind of efficient, accurate, reliable multi-functional fuel injector drive control device.
Description
Technical field
The present invention relates to a kind of fuel injector drive control device, more particularly to a kind of multi-functional fuel injector drive control device.
Background technology
At present, with the continuous application and popularization of Design of High Pressure Common Rail Diesel Engine and direct spray petrol engine in cylinder, people are to fuel injector
The requirement of characteristic also more and more higher, more and more higher especially is required to the dynamic responding speed that fuel injector opens and closes, this is just
It is required that engine controller has high performance drive circuit and efficient control strategy, meanwhile, also to ensure that engine can
Safely and reliably run under rugged environment, the exploitation to engine controller proposes very big challenge with design.It is existing
Engine controller is only the control unit of signal rank, or the driving resource with low-power（Some does not have even
Driving force）, drive and require in face of the fuel injector of Design of High Pressure Common Rail Diesel Engine and direct spray petrol engine in cylinder, be extremely difficult to preferably imitate
Fruit.
The working characteristics driven according to fuel injector magnetic system electric current, its perfect driving are：In armature adhesive, should use up
Larger electric current promptly may be added to electromagnetic valve coil, make its quick response, carry out adhesive action；After adhesive, magnetic circuit gas
Gap reduces, and magnetic resistance also reduces, and now magnetic valve only needs less electric current stably to keep attracting state；In release, it is
The hangover of magnetic valve is reduced, driving current, and the energy of position of quick release magnetic valve should be cut off as quickly as possible.The driving
In mode, the adhesive of magnetic valve is maintained with less holding electric current, on the one hand can reduce the energy loss of battery, the opposing party
Face can also accelerate the rate of release of magnetic valve in release.
In order to realize this preferably fuel injector type of drive, it is necessary to which more complicated drive circuit designs.Industry at present
Interior drive circuit is of all kinds, but generally speaking, there are following several situations：
Divide from the difference of drive signal synthesis mode, mainly there are two kinds of forms：One kind is defeated using main controller controls
The mode gone out, each stage control pulse in drive signal is realized to realize using the Interruption of controller；This method
Need to take substantial amounts of interrupt resources, the operation to controller is unfavorable, i.e., complicated interrupt response can drag the operation of ramping controller
Speed, while the increase of number of interruptions, potential procedural problem can be caused to exist；Therefore the control accuracy of this mode is difficult to protect
Card.Another way is using analog circuit build splicing and combining into, it is necessary to using sampling feedback circuit ceaselessly enter
Row feedback control, while need to use impulse generator, trigger, comparator, amplifier, transistor etc. to build different phase
Control signal, so as to obtain the realization of different current needs；This approach reduces the resources occupation of master controller, but outside
Portion's circuit devcie is more and sends out miscellaneous, is related to the digital circuit of high frequency and sensitive analog circuit Mixed Design, gives circuit design work
Bigger difficulty is brought, does not meet circuit design digitlization and integrated trend, superseded state.
Divided from the driving voltage of fuel injector, there is two ways：A kind of is single high drive mode, this mode
Drive circuit it is very simple, it is easy to accomplish, but power consumption is big, and the requirement to boost module is very high, while precision is difficult control
System, its circuit volume can become very big, not be the direction of following controller exquisiteness trend.Another kind is high low pressure driving
Mode, that is, high pressure is used when opening（It can reach more than a hectovolt under normal circumstances）, and keep voltage to use cell voltage
（12 volts or 24 volts of cell voltages）, this mode is to the less demanding of boost module, and multichannel demand can be met all the way by boosting, together
When can reduce the thermic load of booster circuit, be the direction of future development, but the synthesis of the signal of this circuit is in design
Difficult point.
The content of the invention
The technical problem to be solved in the present invention is：A kind of efficient, accurate, reliable multi-functional fuel injector drive control is provided
Device.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
Design a kind of multi-functional fuel injector drive control device, containing interface protection module, main control module, predrive module,
Drive module, boost module and power management module, the electronic control unit ECU of automobile（Electronic Control
Unit）The fuel injector control signal of output is input to main control module, the driving letter of main control module output after interface protection module
Number enter drive module, drive module control fuel injector work, the fuel injector electric current of drive module output after predrive module
Detection signal feeds back to main control module after predrive module, and boost module provides high electricity for predrive module and drive module
Pressure, power management module are interface protection module, main control module, predrive module, drive module and boost module power supply.
Contain the tenth diode, the 11st diode, the 12nd diode, the 13rd pole in the interface protection module
Pipe, the tenth resistance and the 11st resistance, the positive pole of the tenth diode are connected with the negative pole of the 11st diode, the tenth diode
Negative pole is connected with power supply, and the positive pole of the 11st diode is connected to ground, and the fuel injector control signal of the electronic control unit of automobile is defeated
Go out end to be connected with the positive pole of the tenth diode by the tenth resistance, the positive pole of the 12nd diode and the negative pole of the 13rd diode
Connection, the negative pole of the 12nd diode are connected with power supply, and the positive pole of the 13rd diode is connected to ground, the Electronic Control list of automobile
The power control signal output end of member is connected by the 11st resistance with the positive pole of the 12nd diode；
Interface protection module can mask high pulse voltage signal, and clutter high current signal, can protect well
The core component of fuel injector drive control device is not disturbed by external high pressure impulsive noise signal.
Contain programmable logic controller (PLC), the positive pole and programmable logic controller (PLC) of the tenth diode in the main control module
Fuel injector control signal input connection；
The main control module can be caught to the fuel injector control signal of input, then carry out signal synthesis, export to
Predrive module, carry out high-low pressure Time-sharing control and high-low side combination control；, can be by the electronics of automobile by interface protection module
The multichannel fuel injector control signal of control unit output is transported in programmable logic controller (PLC), and programmable logic controller (PLC) can be to this
A little fuel injector control signals are conveyed to multiple predrive modules and drive module respectively after being handled, and control multiple fuel injector works
Make, therefore, main control module can realize the independent control to each Injection Control channel signal, unaffected each other, solve
Oil spout overlapping phenomenon in most oil spout drivings, it can ideally handle the fuel injector control signal of ECU outputs, truly driving spray
Oily device；
The power management module contains triode and voltage-stablizer, and the power output end of automobile storage battery is connected by forward direction
The 7th diode and the input of voltage-stablizer connect, the output end of voltage-stablizer is the output end of power management module, the tenth
The positive pole of two diodes is connected by the control terminal of triode and voltage-stablizer；
The power management module is mainly used to the voltage to automobile storage battery（12V/24V）Handled, output is whole
The power supply of fuel injector drive control device demand, whether the power supply of power management module is controlled using ECU power control signal,
When power control signal is high level, power management module power supply, when power control signal is low level, power management mould
Block is stopped power supply, power management module power on and off synchronous with whole engine control system；
Contain inductance, storage capacitor, binary channels low side driver and the 4th FET in the boost module, may be programmed
The high voltage output control terminal of logic controller is connected by the 8th resistance with the first input end of binary channels low side driver, double
First output end of passage low side driver is connected by the 4th resistance with the grid of the 4th FET, the 4th FET
Source ground, the drain electrode of the 4th FET are connected by the power output end of inductance and automobile storage battery, the 4th FET
Positive pole of the drain electrode also with the first diode be connected, the negative pole of the first diode is grounded by storage capacitor, the first diode
Negative pole is the high-voltage output terminal of boost module；
The boost module can adjust different boost voltage values according to different fuel injector performance requirements, maximum reachable
150V；Controlled by the PWM ripples of the 4th FET, the lifting of voltage is carried out to the continuous discharge and recharge of inductance；
Contain the first high-low side driver, the second high-low side driver, operational amplifier and comparator in predrive module,
First flash signal output part of programmable logic controller (PLC) is inputted by the flash of first resistor and the first high-low side driver
End connection, the first low side signals output end of programmable logic controller (PLC) are low with the first high-low side driver by second resistance
Side input connection, the second flash signal output part of programmable logic controller (PLC) are driven by 3rd resistor and the second high-low side
The flash input connection of device, the high-voltage output terminal of boost module pass through the second diode and the first high-low side that forward direction connects
The flash floating voltage feeder ear connection of driver, the input of voltage-stablizer are high by the 8th diode of forward direction connection and second
The flash floating voltage feeder ear connection of low side driver；
Contain the first FET, the second FET and the 3rd FET, the first high-low side in the drive module
The flash output end of driver is connected by the 12nd resistance with the grid of the first FET, the first high-low side driver it is low
Side output end is connected by the 9th resistance with the grid of the 3rd FET, and the flash output end of the second high-low side driver passes through
13rd resistance is connected with the grid of the second FET, the flash floating compensation power voltage supply end of the first high-low side driver with
The source electrode connection of first FET, flash floating compensation power voltage supply end and the second FET of the second high-low side driver
Source electrode connection, the high-voltage output terminal of boost module is connected with the drain electrode of the first FET, the source electrode of the first FET
Connected by the 3rd diode of forward direction connection and the first connection terminal of fuel injector, the input of voltage-stablizer and the second field-effect
The drain electrode connection of pipe, the source electrode of the second FET pass through the 4th diode of forward direction connection and the first connection terminal of fuel injector
Connection, the first connection terminal of fuel injector are also grounded by the 5th diode of Opposite direction connection, second connection end of fuel injector
The high-voltage output terminal of boost module is connect by the 6th diode of forward direction connection, second connection end of fuel injector is also with the 3rd
The drain electrode connection of FET, the source electrode of the 3rd FET are connected by the input of the 5th resistance and operational amplifier, fortune
The output end for calculating amplifier is connected by the input of the 6th resistance and comparator, the output end of comparator by the 7th resistance with
The fuel injector current detection signal input connection of programmable logic controller (PLC), programmable logic controller (PLC) are driven by detecting oil spout
The size of current of dynamic circuit realizes closed-loop control, while exports diagnostic message, can carry out short circuit, the diagnosis of open circuit, ensures
The trouble free service of circuit；
The drive module can realize Time-sharing control and the fuel injector selection control of high-low voltage, and the 6th diode is continuous
Diode is flowed, for protecting the 3rd FET, while the effect that fuel injector rapidly switches off can be realized.
Also contain the first pull down resistor, the second pull down resistor and voltage-stabiliser tube, the tenth diode in the interface protection module
Positive pole be grounded by the first pull down resistor, the positive pole of the 12nd diode is grounded by the second pull down resistor, and voltage-stabiliser tube simultaneously connects
Between power supply and ground, voltage-stabiliser tube is capable of the fluctuation of clamped supply voltage, and cost is low, works well；Due to FPGA control
There is no pull down resistor in device processed, in order that programmable logic controller (PLC) pin is in knowable state, so pull down resistor is added,
To prevent the interference under unknown state to programmable logic controller (PLC) Program；Signal after interface protection module can be whole
The square-wave signal of formation standard；
Also contain Transient Voltage Suppressor and emergency flight control terminal in the power management module, the input of voltage-stablizer leads to
Transient Voltage Suppressor ground connection is crossed, emergency flight control terminal is connected by the control terminal of triode and voltage-stablizer；Pass through emergency flight control
Terminal can realize power down emergency processing；First diode contains two diodes to connect together.
The adoptable model of programmable logic controller (PLC)：EPM1270T144, the first high-low side driver and second
The model of high-low side driver：IR2101S, the model of operational amplifier：AD8051, the model of comparator：LM2903,
The model of binary channels low side driver：IR4427S, the model of voltage-stablizer：LM2596S, the first FET, second effect
Ying Guan, the 3rd FET and the 4th FET are N-channel type FET.
The present invention has actively beneficial technique effect：
The high-low pressure Time-sharing control and height of Design of High Pressure Common Rail Diesel Engine and direct spray petrol engine in cylinder fuel injector can be realized
Side combination control, in automotive electronics electric control field, to realize the Injection Control of Design of High Pressure Common Rail Diesel Engine and direct spray petrol engine in cylinder
Provide efficient, accurate, reliable, convenient control device；Meanwhile the present invention realizes drive signal using the circuit simplified
Synthesis, can solve the difficult point that master controller resource occupation is more, circuit is complicated well.
Brief description of the drawings：
Fig. 1 is the structural representation of multi-functional fuel injector drive control device；
Fig. 2 is the circuit theory schematic diagram of main control module；
Fig. 3 is the circuit theory schematic diagram of interface protection module；
Fig. 4 is power management module circuit theory schematic diagram；
Fig. 5 is the circuit theory schematic diagram of predrive module；
Fig. 6 is the circuit theory schematic diagram of drive module；
Fig. 7 is the circuit theory schematic diagram of boost module.
Embodiment：
Referring to Fig. 1~Fig. 7, in figure, multi-functional fuel injector drive control device contains interface protection module, main control module, pre-
Drive module, drive module, boost module and power management module, the electronic control unit ECU of automobile（Electronic
Control Unit）The fuel injector control signal of output is input to main control module, main control module output after interface protection module
Drive signal enter drive module after predrive module, drive module control fuel injector work, the spray of drive module output
Oily device current detection signal feeds back to main control module after predrive module, and boost module is that predrive module and drive module carry
For high voltage, power management module is that interface protection module, main control module, predrive module, drive module and boost module supply
Electricity.
In interface protection module containing the tenth diode, the 11st diode, the 12nd diode, the 13rd diode,
Tenth resistance Rpr1 and the 11st resistance Rpr5, the positive pole of the tenth diode are connected with the negative pole of the 11st diode, and the 12nd
The negative pole of pole pipe is connected with power supply+5V, and the positive pole of the 11st diode is connected to ground, the oil spout control of the electronic control unit of automobile
Signal output part processed is connected by the tenth resistance Rpr1 with the positive pole PY1 of the tenth diode, the tenth diode and the 11st pole
Pipe can be replaced by rectifier Dar1；The positive pole of 12nd diode is connected with the negative pole of the 13rd diode, the 12nd pole
The negative pole of pipe is connected with power supply, and the positive pole of the 13rd diode is connected to ground, the power supply letter of the electronic control unit of automobile
Number output end is connected by the 11st resistance Rpr5 with the positive pole KEY of the 12nd diode, the 12nd diode and the 13rd
Pole pipe can be replaced by rectifier Dar5；
Interface protection module can mask high pulse voltage signal, and clutter high current signal, can protect well
The core component of fuel injector drive control device is not disturbed by external high pressure impulsive noise signal.
Contain programmable logic controller (PLC) U1, the positive pole PY1 and Programmable logical controller of the tenth diode in main control module
Device U1 fuel injector control signal input 119 connects；
Main control module can be caught to the fuel injector control signal of input, then carry out signal synthesis, exported and driven to pre-
Dynamic model block, carry out high-low pressure Time-sharing control and high-low side combination control；, can be by the Electronic Control of automobile by interface protection module
The multichannel fuel injector control signal of unit output（PY2、PY3、PY4）It is transported in programmable logic controller (PLC) U1, FPGA
Controller U1 is conveyed to multiple predrive modules and drive module respectively after can handling these fuel injector control signals, control
The work of multiple fuel injectors, therefore, main control module can realize the independent control to each Injection Control channel signal, each other not by
Influence, solve the oil spout overlapping phenomenon in most oil spout drivings, can ideally handle the fuel injector control signal of ECU outputs,
Truly drive fuel injector；
Power management module contains triode Q29 and voltage-stablizer U2, and the power output end POWER of automobile storage battery passes through just
It is connected to the 7th diode D1 of connection with voltage-stablizer U2 input IN, voltage-stablizer U2 output end OUT is power management
The output end of module, the positive pole KEY of the 12nd diode are connected by triode Q29 with voltage-stablizer U2 control terminal ON/OFF；
Power management module is mainly used to the voltage to automobile storage battery（12V/24V）Handled, export whole oil spout
The power supply of device drive control device demand, whether control the power supply of power management module using ECU power control signal, work as electricity
When source control signal is high level, power management module power supply, when power control signal is low level, power management module stops
Only power, power management module power on and off synchronous with whole engine control system；
Contain inductance L1, storage capacitor Cd1, binary channels low side driver U6 and the 4th FET Q3 in boost module,
Programmable logic controller (PLC) U1 high voltage output control terminal 95 pass through the 8th resistance R8 and binary channels low side driver U6 the
One input INA connections, binary channels low side driver U6 the first output end OUTA pass through the 4th resistance R9 and the 4th field-effect
Pipe Q3 grid connection, the 4th FET Q3 source ground, the 4th FET Q3 drain electrode pass through inductance L1 and automobile
The power output end POWER connections of battery, the 4th FET U6 positive pole to drain also with the first diode D6 are connected, the
One diode D6 negative pole is grounded by storage capacitor Cd1, and the first diode D6 negative pole is that the high voltage of boost module is defeated
Go out end；
Boost module can adjust different boost voltage values according to different fuel injector performance requirements, maximum up to 150V；
Controlled by the 4th FET Q3 PWM ripples, the lifting of voltage is carried out to the continuous discharge and recharges of inductance L1；
Contain the first high-low side driver U10, the second high-low side driver U11, operational amplifier in predrive module
U61A and comparator U5B, programmable logic controller (PLC) U1 the first flash signal output part 29 pass through first resistor R37 and first
High-low side driver U10 flash input HIN connections, programmable logic controller (PLC) U1 the first low side signals output end 3 are logical
Cross second resistance R40 side input LINs low with the first high-low side driver U10's to be connected, the of programmable logic controller (PLC) U1
Two flash signal output parts 27 are connected by 3rd resistor R381 with the second high-low side driver U11 flash input HIN, are risen
The height that the high-voltage output terminal Vboost of die block passes through the second diode D9 and the first high-low side driver U10 of forward direction connection
Side floating voltage feeder ear Vb connections, voltage-stablizer U2 input Vbattery by the 8th diode D10 of forward direction connection with
Second high-low side driver U11 flash floating voltage feeder ear Vb connections；
Contain the first FET NMOS1, the second FET NMOS2 and the 3rd FET NMOS3 in drive module,
First high-low side driver U10 flash output end HO is connected by the 12nd resistance R38 and the first FET NMOS1 grid
Connect, the grid that the first high-low side driver U10 low side output end LO passes through the 9th resistance R43 and the 3rd FET NMOS3
Connection, the second high-low side driver U11 flash output end HO pass through the 13rd resistance R39's and the second FET NMOS2
Grid connects, the first high-low side driver U10 flash floating compensation power voltage supply end Vs and the first FET NMOS1 source
Pole connects, the second high-low side driver U11 flash floating compensation power voltage supply end Vs and the second FET NMOS2 source electrode
Connection, the high-voltage output terminal Vboost of boost module are connected with the first FET NMOS1 drain electrode, the first FET
NMOS1 source electrode is connected by the 3rd diode DI1 of forward direction connection and the first connection terminal of fuel injector, and voltage-stablizer U2's is defeated
Enter to hold Vbattery and the second FET NMOS2 drain electrode to be connected, the second FET NMOS2 source electrode is connected by forward direction
The 4th diode DI2 and the first connection terminal of fuel injector connect, the first connection terminal of fuel injector also passes through Opposite direction connection
The 5th diode DI3 ground connection, second connection end of fuel injector connects boost module by the 6th diode DI4 of forward direction connection
High-voltage output terminal Vboost, the drain electrode of second connection end of fuel injector also with the 3rd FET NMOS3 is connected, the 3rd
FET NMOS3 source electrode is connected by the 5th resistance R62 with operational amplifier U61A input, operational amplifier U61A
Output end be connected by the 6th resistance R63 with comparator U5B input, comparator U5B output end passes through the 7th resistance
R61 is connected with programmable logic controller (PLC) U1 fuel injector current detection signal input 42, and programmable logic controller (PLC) U1 leads to
The size of current for crossing detection injector drive circuit realizes closed-loop control, while exports diagnostic message, can carry out short circuit, open circuit
Diagnosis, ensure the trouble free service of circuit；
Drive module can realize Time-sharing control and the fuel injector selection control of high-low voltage, and the 6th diode DI4 is continuous
Diode is flowed, for protecting the 3rd FET NMOS3, while the effect that fuel injector rapidly switches off can be realized.
Also containing the first pull down resistor Rr1, the second pull down resistor Rr5 and voltage-stabiliser tube Dz1 in interface protection module, the 12nd
The positive pole PY1 of pole pipe is grounded by the first pull down resistor Rr1, and the positive pole KEY of the 12nd diode passes through the second pull down resistor Rr5
Ground connection, voltage-stabiliser tube Dz1 are attempted by between power supply and ground, and voltage-stabiliser tube Dz1 is capable of the fluctuation of clamped supply voltage, and cost is low, effect
Well；Due to there is no pull down resistor in programmable logic controller (PLC) U1, in order that programmable logic controller (PLC) U1 pins be in can
The state known, so pull down resistor is added, to prevent the interference under unknown state to programmable logic controller (PLC) U1 Programs；Through
The signal crossed after interface protection module can be shaped to the square-wave signal of standard；
Also contain Transient Voltage Suppressor TVS1 and emergency flight control terminal, voltage-stablizer U2 input in power management module
Vbattery is grounded by Transient Voltage Suppressor TVS1, the control that emergency flight control terminal passes through triode Q29 and voltage-stablizer U2
Hold ON/OFF connections；Power down emergency processing can be realized by emergency flight control terminal；First diode D6 contains two and is attempted by
Diode together.
Programmable logic controller (PLC) U1 model：EPM1270T144, the first high-low side driver U10 and the second height
Side driver U11 model：IR2101S, operational amplifier U61A model：AD8051, comparator U5B model：
LM2903, binary channels low side driver U6 model：IR4427S, voltage-stablizer U2 model：LM2596S, the first field-effect
Pipe NMOS1, the second FET NMOS2, the 3rd FET NMOS3 and the 4th FET Q3 are N-channel type field-effect
Pipe.
Claims (6)
1. a kind of multi-functional fuel injector drive control device, it is characterized in that：Contain interface protection module, main control module, predrive mould
Block, drive module, boost module and power management module, the fuel injector control signal of the electronic control unit output of automobile is by connecing
Main control module is input to after mouth protection module, the drive signal of main control module output enters drive module after predrive module,
Drive module control fuel injector work, the fuel injector current detection signal of drive module output feed back to master after predrive module
Module is controlled, boost module provides high voltage for predrive module and drive module, and power management module is interface protection module, master
Control module, predrive module, drive module and boost module power supply；
Contain the tenth diode, the 11st diode, the 12nd diode, the 13rd diode, the tenth in interface protection module
Resistance and the 11st resistance, the positive pole of the tenth diode are connected with the negative pole of the 11st diode, the negative pole of the tenth diode with
Power supply is connected, and the positive pole of the 11st diode is connected to ground, and the fuel injector control signal output end of the electronic control unit of automobile is led to
The tenth resistance to be crossed to be connected with the positive pole of the tenth diode, the positive pole of the 12nd diode is connected with the negative pole of the 13rd diode,
The negative pole of 12nd diode is connected with power supply, and the positive pole of the 13rd diode is connected to ground, the electronic control unit of automobile
Power control signal output end is connected by the 11st resistance with the positive pole of the 12nd diode；
Power management module contains triode and voltage-stablizer, and the power output end of automobile storage battery passes through the 7th 2 of forward direction connection
The input of pole pipe and voltage-stablizer connects, and the output end of voltage-stablizer is the output end of power management module, the 12nd diode
Positive pole pass through the control terminal of triode and voltage-stablizer connect；
Also contain the first pull down resistor, the second pull down resistor and voltage-stabiliser tube in interface protection module, the positive pole of the tenth diode leads to
Cross the first pull down resistor ground connection, the positive pole of the 12nd diode be grounded by the second pull down resistor, voltage-stabiliser tube be attempted by power supply with
Between ground；Also contain Transient Voltage Suppressor and emergency flight control terminal in power management module, the input of voltage-stablizer passes through wink
State voltage suppressor is grounded, and emergency flight control terminal is connected by the control terminal of triode and voltage-stablizer；First diode contains two
The individual diode to connect together.
2. multi-functional fuel injector drive control device according to claim 1, it is characterized in that：Containing in the main control module can
Programmed logic controller, the positive pole of the tenth diode and the fuel injector control signal input of programmable logic controller (PLC) connect.
3. multi-functional fuel injector drive control device according to claim 1, it is characterized in that：Contain electricity in the boost module
Sense, storage capacitor, binary channels low side driver and the 4th FET, the high voltage output control terminal of programmable logic controller (PLC)
It is connected by the 8th resistance with the first input end of binary channels low side driver, the first output end of binary channels low side driver is led to
Cross the 4th resistance to be connected with the grid of the 4th FET, the source ground of the 4th FET, the drain electrode of the 4th FET
Connected by the power output end of inductance and automobile storage battery, the positive pole to drain also with the first diode of the 4th FET connects
Connect, the negative pole of the first diode is grounded by storage capacitor, and the negative pole of the first diode is the high voltage output of boost module
End.
4. multi-functional fuel injector drive control device according to claim 1, it is characterized in that：Contain in the predrive module
First high-low side driver, the second high-low side driver, operational amplifier and comparator, the first of programmable logic controller (PLC) are high
Side signal output part is connected by first resistor with the flash input of the first high-low side driver, programmable logic controller (PLC)
First low side signals output end is connected by second resistance side input low with the first high-low side driver, FPGA control
Second flash signal output part of device processed is connected by 3rd resistor with the flash input of the second high-low side driver, and boost mould
The high-voltage output terminal of block is powered by the second diode of forward direction connection and the flash floating voltage of the first high-low side driver
End connection, the input of voltage-stablizer pass through the 8th diode of forward direction connection and the flash floating voltage of the second high-low side driver
Feeder ear connects.
5. multi-functional fuel injector drive control device according to claim 1, it is characterized in that：Contain in the drive module
One FET, the second FET and the 3rd FET, the flash output end of the first high-low side driver pass through the 12nd
Resistance is connected with the grid of the first FET, and the low side output end of the first high-low side driver passes through the 9th resistance and the 3rd
The grid connection of effect pipe, the flash output end of the second high-low side driver pass through the 13rd resistance and the grid of the second FET
Pole is connected, and the flash floating compensation power voltage supply end of the first high-low side driver is connected with the source electrode of the first FET, and second
The flash floating compensation power voltage supply end of high-low side driver is connected with the source electrode of the second FET, the high voltage of boost module
Output end is connected with the drain electrode of the first FET, and the source electrode of the first FET passes through the 3rd diode that forward direction connects and spray
The first connection terminal connection of oily device, the input of voltage-stablizer are connected with the drain electrode of the second FET, the second FET
Source electrode is connected by the 4th diode of forward direction connection and the first connection terminal of fuel injector, and the first connection terminal of fuel injector is also
It is grounded by the 5th diode of Opposite direction connection, second connection end of fuel injector connects liter by the 6th diode of forward direction connection
The high-voltage output terminal of die block, the drain electrode of second connection end of fuel injector also with the 3rd FET are connected, the 3rd effect
Should the source electrode of pipe connected by the input of the 5th resistance and operational amplifier, the output end of operational amplifier passes through the 6th resistance
It is connected with the input of comparator, the output end of comparator passes through the 7th resistance and the fuel injector electric current of programmable logic controller (PLC)
Detection signal input connects.
6. multi-functional fuel injector drive control device according to claim 2, it is characterized in that：The programmable logic controller (PLC)
Model：The model of EPM1270T144, the first high-low side driver and the second high-low side driver：IR2101S, computing
The model of amplifier：AD8051, the model of comparator：LM2903, the model of binary channels low side driver：IR4427S,
The model of voltage-stablizer：LM2596S, the first FET, the second FET, the 3rd FET and the 4th FET are equal
For N-channel type FET.
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| CN104806401B true CN104806401B (en) | 2018-01-12 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105736162B (en) * | 2014-12-08 | 2018-06-19 | 联创汽车电子有限公司 | common rail diesel engine fuel injection control system |
| CN105422963B (en) * | 2015-12-18 | 2018-05-04 | 无锡隆盛科技股份有限公司 | Engine electric-controlled single pump electromagnetic valve control circuit |
| CN107086779B (en) * | 2017-04-28 | 2023-08-01 | 广东铭基高科电子股份有限公司 | Intelligent voltage reducing and line pressing device for automobile |
| CN107120201B (en) * | 2017-07-03 | 2019-06-21 | 山东建筑大学 | A fuel injector drive circuit with arc suppression circuit and current detection |
| US10443533B2 (en) * | 2017-10-23 | 2019-10-15 | GM Global Technology Operations LLC | Mild hybrid powertrain with simplified fuel injector boost |
| CN112746908B (en) * | 2021-01-15 | 2021-11-12 | 无锡职业技术学院 | Driving control system for high-pressure common-rail piezoelectric ceramic oil injector of diesel engine |
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| CN101368520A (en) * | 2008-10-09 | 2009-02-18 | 天津大学 | Fully digital fuel injector drive and fault detection circuit |
| CN201650475U (en) * | 2010-03-03 | 2010-11-24 | 中国一拖集团有限公司 | Electronically controlled unit pump injector driver |
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| CN204663730U (en) * | 2015-05-16 | 2015-09-23 | 意昂神州（北京）科技有限公司 | Multi-functional oil sprayer drive controller |
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| CN101368520A (en) * | 2008-10-09 | 2009-02-18 | 天津大学 | Fully digital fuel injector drive and fault detection circuit |
| CN201650475U (en) * | 2010-03-03 | 2010-11-24 | 中国一拖集团有限公司 | Electronically controlled unit pump injector driver |
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