CN110080893A - Automobile control method based on rail pressure signal and boost pressure signal - Google Patents

Automobile control method based on rail pressure signal and boost pressure signal Download PDF

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Publication number
CN110080893A
CN110080893A CN201910423211.9A CN201910423211A CN110080893A CN 110080893 A CN110080893 A CN 110080893A CN 201910423211 A CN201910423211 A CN 201910423211A CN 110080893 A CN110080893 A CN 110080893A
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China
Prior art keywords
signal
output end
resistance
unit
module
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CN201910423211.9A
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Chinese (zh)
Inventor
张运波
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Car And Bank World Network Polytron Technologies Inc
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Car And Bank World Network Polytron Technologies Inc
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Priority to CN201910423211.9A priority Critical patent/CN110080893A/en
Publication of CN110080893A publication Critical patent/CN110080893A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F02D31/002—Electric control of rotation speed controlling air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F02D31/007—Electric control of rotation speed controlling fuel supply
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/18—Control of the engine output torque

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The present invention is suitable for technical field of automobile control, provides a kind of automobile control method based on rail pressure signal and boost pressure signal, comprising: select the control model of control unit；Control unit receives the rail pressure signal of rail pressure sensor output or the boost pressure signal of air inlet pressure sensor output, and carries out the amplification of corresponding multiple to rail pressure signal according to the control model of setting, and amplified rail pressure signal is sent to automobile ECU；Automobile ECU controls automobile engine operation according to amplified rail pressure signal.Such method, which is realized, carries out auxiliary control to automobile, is not merely by the original control system of automobile, and driver can control automobile according to the demand of itself, enhance the experience sense of driver.

Description

Automobile control method based on rail pressure signal and boost pressure signal
Technical field
The invention belongs to technical field of automobile control more particularly to a kind of vapour based on rail pressure signal and boost pressure signal Vehicle control method.
Background technique
ECU (Electronic Control Unit) refers to electronic control unit, also known as car running computer, is mounted on vapour Interior portion is generally used to control fuel injection amount, gaseous mixture ratio etc., by microprocessor, memory, input/output interface, mould The large scale integrated circuits such as number converter and shaping, driving composition.
The pressure conversion that existing automobile rail pressure sensor will test passes to Engine ECU, automotive air intake at electric signal The pressure conversion that pressure sensor will test passes to automobile ECU at electric signal, and automobile ECU is according to rail pressure sensor and air inlet pressure The revolving speed of the signal correction engine of force snesor adjusts the output torque of engine, but Engine ECU heavy dependence with this The signal that sensor is sent cannot take different control strategies for different vehicle conditions, it is maximum latent can not to play engine Energy.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of automobile controlling party based on rail pressure signal and boost pressure signal Method cannot take different control strategies for different vehicle conditions to solve automobile ECU in the prior art, can not play engine The problem of maximum potential.
In order to solve the above technical problems, the technical solution used in the present invention is: a kind of be based on rail pressure signal and air inlet pressure The automobile control method of force signal, comprising:
Select the control model of control unit；
Described control unit receives the rail pressure signal of rail pressure sensor output or the air inlet pressure of air inlet pressure sensor output Force signal, and the amplification of corresponding multiple is carried out according to the control model of setting to rail pressure signal or boost pressure signal, it will amplify Rail pressure signal or boost pressure signal afterwards is sent to automobile ECU；
Automobile ECU is according to amplified rail pressure signal or boost pressure signal control automobile engine operation.
Further, described control unit includes the first controller and second controller, first controller and described Second controller includes selecting unit and signal processing unit, and the signal processing unit is signal amplification unit, signal ratio Combination compared with any two or more in unit and chip controls unit, first controller and the second controller are mutually only It is vertical；
The signal output end of the input terminal connection rail pressure sensor of selecting unit in first controller, the selection The output end of unit is separately connected the input terminal and the core of the input terminal of the signal amplification unit, the signal comparing unit The input terminal of piece control unit, the output end and the core of the output end of the signal amplification unit, the signal comparing unit The output end of piece control unit is all connected with automobile ECU；
The signal output end of the input terminal connection air inlet pressure sensor of selecting unit in the second controller, it is described The output end of selecting unit is separately connected the input terminal of the signal amplification unit, the input terminal of the signal comparing unit and institute State the input terminal of chip controls unit, the output end of the signal amplification unit, the output end of the signal comparing unit and institute The output end for stating chip controls unit is all connected with automobile ECU.
Further, the selecting unit includes that first switch, second switch and third switch, and the one of the first switch The one end at end, one end of the second switch and third switch is all connected with the signal output end or air inlet pressure of rail pressure sensor The signal output end of force snesor, the other end of the first switch connect the input terminal of the signal amplification unit, and described The other end of two switches connects the input terminal of the signal comparing unit, and the other end of the third switch connects the chip control The input terminal of unit processed.
Further, the signal comparing unit includes comparison module, the first amplification module and the second amplification module, rail pressure The signal output end of sensor or the signal output end of air inlet pressure sensor are separately connected the input terminal of the comparison module, institute State the first input end of the first amplification module and the first input end of second amplification module, the output end of the comparison module It is separately connected the second input terminal of first amplification module and the second input terminal of second amplification module, described first puts The big output end of module and the output end of second amplification module are all connected with automobile ECU.
Further, the comparison module includes comparator U1With the first adjustment module, the comparator U1Positive input The signal output end of end connection rail pressure sensor or the signal output end of air inlet pressure sensor, the comparator U1It is reversed defeated Enter the output end that end connects first adjustment module, the comparator U1Output end be separately connected first amplification module The second input terminal and second amplification module the second input terminal.
Further, first amplification module includes first switch module, amplifier U2, resistance R2, resistance R3, resistance R4With slide rheostat Rb, the input terminal of the first switch module connects the output end of the comparison module, the first switch The output end of module connects the amplifier U2A supply terminals, the amplifier U3Another supply terminals connect Meet power supply VCC, the amplifier U2Positive input be separately connected the resistance R3One end and the resistance R4One end, The resistance R4The other end ground connection, the resistance R3The other end connection rail pressure sensor signal output end or admission pressure The signal output end of sensor, the amplifier U2Reverse input end be separately connected the resistance R2One end and the sliding Rheostat RbOne end, the resistance R2The other end ground connection, the slide rheostat RbThe other end be separately connected the amplification Device U2Output end and automobile ECU.
Further, second amplification module includes second switch module, amplifier U3, resistance R5, resistance R6, resistance R7With slide rheostat Rc, the input terminal of the second switch module connects the output end of the comparison module, the second switch The output end of module connects the amplifier U3A supply terminals, the amplifier U3Another power supply wiring termination Ground, the amplifier U3Positive input be separately connected the resistance R5One end and the resistance R6One end, the resistance R6The other end ground connection, the resistance R5Other end connection rail pressure sensor signal output end or air inlet pressure sensor Signal output end, the amplifier U3Reverse input end be separately connected the resistance R7One end and the slide rheostat Rc One end, the resistance R7The other end ground connection, the slide rheostat RcThe other end be separately connected the amplifier U3It is defeated Outlet and automobile ECU.
Further, the signal amplification unit includes amplifier U4, resistance R10, division module and resistance value can change Third adjustment module, the amplifier U4Noninverting input connect the output end of the division module, the division module Input terminal connect the signal output end of the rail pressure sensor or the signal output end of air inlet pressure sensor, the resistance R10 One end ground connection, the resistance R10The other end be separately connected the amplifier U4Reverse input end and the third adjust mould One end of block, the amplifier U4Output end be separately connected the other end and automobile ECU of the third adjustment module.
Further, the third adjustment module includes the adjusting branch of N item parallel connection, and the M articles adjusting branch includes one Switch KMWith a resistance rM, the switch KMOne end connect one end of the third adjustment module, the switch KMIt is another End connects the resistance rMOne end, the resistance rMThe other end connect the other end of the third adjustment module, wherein 0 < M≤N, and M and N are natural number.
Further, the chip controls unit includes processor and several fix multiple amplifying unit, the processing The signal output end of the input port connection rail pressure sensor of device or the signal output end of air inlet pressure sensor, Mei Gegu The input terminal for determining multiple amplifying unit connects an output port of the processor, the output of each fixed multiple amplifying unit End is all connected with automobile ECU.
The beneficial effects of adopting the technical scheme are that the present invention devise it is a kind of based on rail pressure signal and into The automobile control method of air pressure force signal, when automobile engine is not able to satisfy power demand, it is single that driver can choose control The control model of member, control unit can carry out corresponding multiple to rail pressure signal or boost pressure signal according to the selected mode Amplification, is sent to automobile ECU for amplified rail pressure signal or boost pressure signal, automobile ECU is believed according to amplified rail pressure Number or boost pressure signal control automobile engine operation.Such control method meets automobile and is changed accordingly to different road conditions Become, plays the maximum potential of engine.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these Attached drawing obtains other attached drawings.
Fig. 1 is the process of the automobile control method provided in an embodiment of the present invention based on rail pressure signal and boost pressure signal Figure；
Fig. 2 is the functional block diagram of control unit provided in an embodiment of the present invention；
Fig. 3 is the circuit connection diagram of signal comparing unit provided in an embodiment of the present invention；
Fig. 4 is the circuit connection diagram of signal amplification unit provided in an embodiment of the present invention；
Fig. 5 is the functional block diagram of chip controls unit provided in an embodiment of the present invention.
In figure: 100, comparison module；200, the first amplification module；300, the second amplification module；400, division module；500, Third adjustment module.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
As shown in Figure 1, the automobile control method based on rail pressure signal and boost pressure signal, comprising:
Step S101 selects the control model of control unit.
The selection gist of control model includes weather, road conditions and vehicle condition.Such as need to increase power need when road conditions difference It asks, power demand can be reduced when road conditions are good, driver can carry out the selection of control model according to actual needs, meet Particular/special requirement of the driver to automobile.
Step S102, control unit receive rail pressure sensor output rail pressure signal or air inlet pressure sensor output into Air pressure force signal, and the amplification of corresponding multiple is carried out according to the control model of setting to rail pressure signal or boost pressure signal, it will Amplified rail pressure signal or boost pressure signal are sent to automobile ECU.
After the completion of control model selection, control unit carries out corresponding multiple to rail pressure signal or boost pressure signal and puts Greatly, the amplification that this place is said includes positive amplification and reversed amplification (diminution).
Step S103, automobile ECU are run according to amplified rail pressure signal or boost pressure signal control automobile engine.
For example, when control unit carries out positive amplification to rail pressure signal or is reversely amplified (i.e. to boost pressure signal Reduce) when, automobile ECU can control reduction distributive value, reduce the power output of engine, realize the effect of fuel-economizing, such mode It is suitble in the good situation of road conditions, automobile balance operation；When control unit is reversely amplified rail pressure signal and (reduced) Or when carrying out positive amplification to boost pressure signal, automobile ECU can control increase distributive value, improve the power output of engine, Such mode is suitble to the situation of vehicle starting, climbing or road conditions difference, needs engine to increase power output, can smoothly rise Step, climbing or the road for passing through road conditions difference.Such method, which is realized, carries out auxiliary control to automobile, is not merely former by automobile Some control systems, driver can control automobile according to the demand of itself, enhance the experience sense of driver.
As shown in Fig. 2, control unit includes the first controller and second controller, the first controller and second controller are equal Including selecting unit and signal processing unit, signal processing unit is signal amplification unit, signal comparing unit and chip controls Any two or more combinations in unit, the first controller and second controller are mutually indepedent；Selection list in first controller The signal output end of the input terminal connection rail pressure sensor of member, the output end of selecting unit are separately connected the defeated of signal amplification unit Enter the input terminal at end, the input terminal of signal comparing unit and chip controls unit, output end, the signal of signal amplification unit compare The output end of unit and the output end of chip controls unit are all connected with automobile ECU；The input of selecting unit in second controller The signal output end of end connection air inlet pressure sensor, the output end of selecting unit are separately connected the input of signal amplification unit It holds, the input terminal of the input terminal of signal comparing unit and chip controls unit, output end, the signal of signal amplification unit are more single The output end of member and the output end of chip controls unit are all connected with automobile ECU.
Signal processing unit is any two or more in signal amplification unit, signal comparing unit and chip controls unit Combination, designer can setting signal processing unit according to actual needs number and type, the first controller and the second control Both devices are mutually indepedent, and the first controller, which can be realized, handles the rail pressure signal of rail pressure sensor output, are then transported on To automobile ECU；Second controller, which can be realized, handles the boost pressure signal of air inlet pressure sensor output, then passes It send to automobile ECU.When driver carries out model selection, it can be worked with the first controller of single choice or second controller works, it can also So that the first controller and second controller work simultaneously, the auxiliary control of automobile is realized.Also, driver can pass through Control the first controller and second controller control signal amplification unit, signal comparing unit and chip controls unit whether work Make, realizes different control models.
In one embodiment of the present of invention, selecting unit includes first switch, second switch and third switch, first switch One end, second switch one end and third switch one end be all connected with rail pressure sensor signal output end or admission pressure pass The other end of the signal output end of sensor, the input terminal of the other end connection signal amplifying unit of first switch, second switch connects Connect the input terminal of signal comparing unit, the input terminal of the other end connection chip controls unit of third switch.
When first switch closure, second switch and third switch disconnect, works for signal amplification unit carry out automobile at this time Auxiliary control；When second switch closure, first switch and third switch disconnect, automobile is carried out for signal comparing unit at this time Auxiliary control；Third closes the switch, and when first switch and the second switch disconnects, carries out the auxiliary of automobile at this time for chip controls unit Help control；The closure and disconnect the choosing for carrying out control model that driver is switched by control first switch, second switch and third It selects.
As shown in figure 3, signal comparing unit includes comparison module 100, the first amplification module 200 and the second amplification module 300, the signal output end of rail pressure sensor or the signal output end of air inlet pressure sensor are separately connected the defeated of comparison module 100 Enter end, the first input end of the first amplification module 200 and the second amplification module 300 first input end, comparison module 100 it is defeated Outlet is separately connected the second input terminal of the first amplification module 200 and the second input terminal of the second amplification module 300, the first amplification The output end of the output end of module 200 and the second amplification module 300 is all connected with automobile ECU.
First amplification module 200, the second amplification module 300 and comparison module 100 receive the rail of rail pressure sensor output The boost pressure signal of signal or air inlet pressure sensor output is pressed, comparison module 100 senses preset value and received rail pressure The rail pressure signal of device output or the boost pressure signal of air inlet pressure sensor output control the first amplification module after being compared 200 or second amplification module 300 work, the first amplification module 200 or the second amplification module 300 are to rail pressure signal or admission pressure Signal carries out the amplification of setting multiple, and amplified rail pressure signal or boost pressure signal are sent in automobile ECU.Comparison module 100 can by rail pressure sensor export rail pressure signals or air inlet pressure sensor output boost pressure signals and preset value into Row compares, thus whether judge the work of the first amplification module 200 and the second amplification module 300, with realization to rail pressure sensor The boost pressure signal of rail pressure signal or the air inlet pressure sensor output of output is amplified accordingly, after then amplifying again Rail pressure signal or boost pressure signal be sent in automobile ECU, automobile ECU is according to amplified rail pressure signal or admission pressure Signal controls automobile, to adapt to different load conditions.
In one embodiment of the present of invention, comparison module 100 includes comparator U1With the first adjustment module, comparator U1's Positive input connects the signal output end of rail pressure sensor or the signal output end of air inlet pressure sensor, comparator U1It is anti- The output end of the first adjustment module, comparator U are connected to input terminal1Output end be separately connected the of the first amplification module 200 Second input terminal of two input terminals and the second amplification module 300.
Comparator U1Rail pressure signal or boost pressure signal and preset value are compared, output is high according to the result of the comparison Level or low level are realized that control which of the first amplification module 200 and the second amplification module 300 work, are realized Amplification to rail pressure signal or the corresponding multiple of boost pressure signal, adapts to different road conditions.
In one embodiment of the present of invention, the first adjustment module includes resistance R1With slide rheostat Ra, resistance R1One end Connect power supply VCC, resistance R1The other end be separately connected comparator U1Reverse input end and slide rheostat RaOne end, sliding Rheostat RaThe other end ground connection.
By adjusting slide rheostat RaCan carry out the setting of setting value, realize rail pressure signal or boost pressure signal and The comparison of setting value controls the work of the first amplification module 200 and the second amplification module 300.
In one embodiment of the present of invention, the first amplification module 200 includes first switch module, amplifier U2, resistance R2、 Resistance R3, resistance R4With slide rheostat Rb, the output end of the input terminal connection comparison module 100 of first switch module, first opens The output end for closing module connects amplifier U2A supply terminals, amplifier U3Another supply terminals connect power supply VCC, amplifier U2Positive input be separately connected resistance R3One end and resistance R4One end, resistance R4The other end ground connection, Resistance R3The other end connection rail pressure sensor signal output end or air inlet pressure sensor signal output end, amplifier U2 Reverse input end be separately connected resistance R2One end and slide rheostat RbOne end, resistance R2The other end ground connection, sliding become Hinder device RbThe other end be separately connected amplifier U2Output end and automobile ECU.
By adjusting slide rheostat RbIt can change the amplification factor of the first amplification module 200, to meet different road conditions Demand.
In one embodiment of the present of invention, first switch module includes switching transistor Q1, switching transistor Q1Base stage connect Meet the output end of comparison module 100, switching transistor Q1Emitter ground connection, switching transistor Q1Collector connect amplifier U2A supply terminals.
When the output of comparison module 100 is high level, switching transistor Q1Conducting, amplifier U2Obtain electric, the first amplification module 200 work, and the amplification of setting multiple is carried out to rail pressure signal or boost pressure signal.
In one embodiment of the present of invention, the second amplification module 300 includes second switch module, amplifier U3, resistance R5、 Resistance R6, resistance R7With slide rheostat Rc, the output end of the input terminal connection comparison module 100 of second switch module, second opens The output end for closing module connects amplifier U3A supply terminals, amplifier U3Another supply terminals ground connection, amplification Device U3Positive input be separately connected resistance R5One end and resistance R6One end, resistance R6The other end ground connection, resistance R5's The other end connects the signal output end of rail pressure sensor or the signal output end of air inlet pressure sensor, amplifier U3It is reversed defeated Enter end and is separately connected resistance R7One end and slide rheostat RcOne end, resistance R7The other end ground connection, slide rheostat Rc's The other end is separately connected amplifier U3Output end and automobile ECU.
By adjusting slide rheostat RcIt can change the amplification factor of the first amplification module 200, to meet different road conditions Demand.
In one embodiment of the present of invention, second switch module includes switching transistor Q2, switching transistor Q2Base stage connect Meet the output end of comparison module 100, switching transistor Q2Emitter connect power supply VCC, switching transistor Q2Collector connection Amplifier U3A supply terminals.
When the output of comparison module 100 is high level, switching transistor Q2Conducting, amplifier U3Obtain electric, the first amplification module 200 work, and the amplification of setting multiple is carried out to rail pressure signal or boost pressure signal.
As shown in figure 4, signal amplification unit includes amplifier U4, resistance R10, division module 400 and resistance value can change Third adjustment module 500, amplifier U4Noninverting input connection division module 400 output end, division module 400 it is defeated Enter the signal output end of end connection rail pressure sensor or the signal output end of air inlet pressure sensor, resistance R10One end ground connection, Resistance R10The other end be separately connected amplifier U4Reverse input end and third adjustment module 500 one end, amplifier U4's Output end is separately connected the other end and automobile ECU of third adjustment module 500.
Division module 400 receives the rail pressure signal of rail pressure sensor output or the admission pressure of air inlet pressure sensor output Signal, and rail pressure signal or boost pressure signal are divided, the rail pressure value after partial pressure is less than the rail of rail pressure sensor output Pressure value, the boost pressure signal after partial pressure are less than the air inlet pressure force value of air inlet pressure sensor output, and operational amplifier U is to partial pressure Rail pressure signal or boost pressure signal after the partial pressure of module 400 amplify, and can be realized operation by third adjustment module 500 Amplification factor of the amplifier U to rail pressure signal or boost pressure signal.Driver is logical according to locating environment in this manner The operating mode that third adjustment module 500 selects automobile is crossed, signal amplification unit can be by rail pressure according to the operating mode of selection The rail pressure signal of sensor output or the boost pressure signal of air inlet pressure sensor output carry out positive amplification or reversed amplification (diminution), the ECU of automobile controls engine operation according to signal amplification unit treated rail pressure value or air inlet pressure force value, with suitable Different vehicle condition environment is answered, the potential of engine is played.
In one embodiment of the present of invention, control unit further includes shell, and signal amplification unit is installed inside housings, shell Body can play the protective effect to signal amplification unit, the stability of enhancement device and the mechanical impact for avoiding equipment.
In one embodiment of the present of invention, division module 400 includes resistance R8With resistance R9, resistance R8One end connect rail The signal output end of pressure sensor or the signal output end of air inlet pressure sensor, resistance R8The other end be separately connected resistance R9 One end and operational amplifier U4Noninverting input, resistance R9The other end ground connection.
The rail pressure value of rail pressure sensor output or the air inlet pressure force value of air inlet pressure sensor output are Ui, by dividing mould The rail pressure value or air inlet pressure force value that operational amplifier U noninverting input is delivered to after block 400 beIt realizes to rail Pressure sensor exports the reversed amplification (reducing) of the boost pressure signal of rail pressure signal or air inlet pressure sensor output, passes through Adjust resistance R8With resistance R9The size of specific resistance value can adjust the minification to rail pressure signal or boost pressure signal.
In one embodiment of the present of invention, third adjustment module 500 includes the adjusting branch of N item parallel connection, the M articles adjusting branch Road includes a switch KMWith a resistance rM, switch KMOne end connection third adjustment module 500 one end, switch KMIt is another One end connects resistance rMOne end, resistance rMThe other end connection third adjustment module 500 the other end, wherein 0 < M≤N, and M and N is natural number.
When normal condition, all switches adjusted in branch are in off-state, when driver is closed a wherein branch When switch in road, such as the switch K in the M articles branchMClosure, the rail pressure that the noninverting input of operational amplifier inputs at this time Value or air inlet pressure force value areThe output voltage of operational amplifier U isOften The resistance value that item adjusts resistance in branch is different, by selecting different branch upper switch, resistance RMIt can choose different resistances Value, operational amplifier realize the amplification of different multiples, it is final realize rail pressure value that signal amplification unit is output in automobile ECU or Air inlet pressure force value UoFor the rail pressure value of rail pressure sensor output or the air inlet pressure force value different multiples of air inlet pressure sensor output Amplification (forward direction amplification or reversed amplification), the rail pressure value or air inlet pressure force value control that automobile ECU is exported according to signal amplification unit Engine operation processed plays the potential of engine, meets the needs of driver to adapt to different road conditions environment.
In one embodiment of the present of invention, signal amplification unit passes through the signal output end of fieldbus and rail pressure sensor Or the signal output end connection of air inlet pressure sensor, the output end of signal amplification unit pass through the ECU of fieldbus and automobile Connection.Use site bus realizes the connection between component, can guarantee the stability of electric signal transmission, improves device entirety Stability.
As shown in figure 5, chip controls unit include processor and several fix multiple amplifying units, one of processor Input port connects the signal output end of rail pressure sensor or the signal output end of air inlet pressure sensor, each fixed multiple are put One output port of the input terminal connection processor of big unit, the output end of each fixed multiple amplifying unit are all connected with automobile ECU。
Processor can select the single-chip microcontroller of the models such as 89C51,89C52, STM8 or STM32, in advance to setting in processor Several fixed threshold ranges, processor receive the rail pressure signal or air inlet pressure sensor output end of rail pressure sensor output Boost pressure signal, and judge received rail pressure signal or boost pressure signal is to determine rail pressure in which threshold range The corresponding output port output order of control after signal or boost pressure signal are in some threshold range, control connection should The fixation multiple amplifying unit of output port rail pressure signal or boost pressure signal is fixed the amplification of multiple, and different consolidates Determine multiple amplifying unit to rail pressure signal or boost pressure signal carry out different multiples amplification (amplification herein include amplification and Reduce), different road conditions are adapted to, the multistage auxiliary control of automobile is realized, improves the sensitivity of auxiliary control.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all It is included within protection scope of the present invention.

Claims (10)

1. a kind of automobile control method based on rail pressure signal and boost pressure signal characterized by comprising
Select the control model of control unit；
Described control unit receives the rail pressure signal of rail pressure sensor output or the admission pressure letter of air inlet pressure sensor output Number, and the amplification of corresponding multiple is carried out according to the control model of setting to rail pressure signal or boost pressure signal, it will be amplified Rail pressure signal or boost pressure signal are sent to automobile ECU；
Automobile ECU is according to amplified rail pressure signal or boost pressure signal control automobile engine operation.
2. the automobile control method according to claim 1 based on rail pressure signal and boost pressure signal, which is characterized in that Described control unit includes the first controller and second controller, and first controller and the second controller include choosing Unit and signal processing unit are selected, the signal processing unit is signal amplification unit, signal comparing unit and chip controls list Any two or more combinations in member, first controller and the second controller are mutually indepedent；
The signal output end of the input terminal connection rail pressure sensor of selecting unit in first controller, the selecting unit Output end be separately connected the input terminal of the signal amplification unit, the input terminal of the signal comparing unit and the chip control The input terminal of unit processed, the output end of the signal amplification unit, the output end of the signal comparing unit and the chip control The output end of unit processed is all connected with automobile ECU；
The signal output end of the input terminal connection air inlet pressure sensor of selecting unit in the second controller, the selection The output end of unit is separately connected the input terminal and the core of the input terminal of the signal amplification unit, the signal comparing unit The input terminal of piece control unit, the output end and the core of the output end of the signal amplification unit, the signal comparing unit The output end of piece control unit is all connected with automobile ECU.
3. the automobile control method according to claim 2 based on rail pressure signal and boost pressure signal, which is characterized in that The selecting unit includes first switch, second switch and third switch, one end of the first switch, the second switch One end and the third switch one end be all connected with rail pressure sensor signal output end or air inlet pressure sensor signal it is defeated Outlet, the other end of the first switch connect the input terminal of the signal amplification unit, and the other end of the second switch connects The input terminal of the signal comparing unit is connect, the other end of the third switch connects the input terminal of the chip controls unit.
4. the automobile control method according to claim 2 based on rail pressure signal and boost pressure signal, which is characterized in that The signal comparing unit includes comparison module, the first amplification module and the second amplification module, the signal output of rail pressure sensor The signal output end of end or air inlet pressure sensor is separately connected the input terminal of the comparison module, first amplification module The first input end of first input end and second amplification module, the output end of the comparison module are separately connected described first Second input terminal of the second input terminal of amplification module and second amplification module, the output end of first amplification module and The output end of second amplification module is all connected with automobile ECU.
5. the automobile control method according to claim 4 based on rail pressure signal and boost pressure signal, which is characterized in that The comparison module includes comparator U1With the first adjustment module, the comparator U1Positive input connect rail pressure sensor Signal output end or air inlet pressure sensor signal output end, the comparator U1Reverse input end connection described first The output end of adjustment module, the comparator U1Output end be separately connected the second input terminal and the institute of first amplification module State the second input terminal of the second amplification module.
6. the automobile control method according to claim 4 based on rail pressure signal and boost pressure signal, which is characterized in that First amplification module includes first switch module, amplifier U2, resistance R2, resistance R3, resistance R4With slide rheostat Rb, institute The input terminal for stating first switch module connects the output end of the comparison module, and the output end of the first switch module connects institute State amplifier U2A supply terminals, the amplifier U3Another supply terminals connect power supply VCC, the amplification Device U2Positive input be separately connected the resistance R3One end and the resistance R4One end, the resistance R4The other end Ground connection, the resistance R3The other end connection rail pressure sensor signal output end or air inlet pressure sensor signal output End, the amplifier U2Reverse input end be separately connected the resistance R2One end and the slide rheostat RbOne end, institute State resistance R2The other end ground connection, the slide rheostat RbThe other end be separately connected the amplifier U2Output end and vapour Vehicle ECU.
7. the automobile control method according to claim 4 based on rail pressure signal and boost pressure signal, which is characterized in that Second amplification module includes second switch module, amplifier U3, resistance R5, resistance R6, resistance R7With slide rheostat Rc, institute The input terminal for stating second switch module connects the output end of the comparison module, and the output end of the second switch module connects institute State amplifier U3A supply terminals, the amplifier U3Another supply terminals ground connection, the amplifier U3Just The resistance R is separately connected to input terminal5One end and the resistance R6One end, the resistance R6The other end ground connection, it is described Resistance R5The other end connection rail pressure sensor signal output end or air inlet pressure sensor signal output end, the amplification Device U3Reverse input end be separately connected the resistance R7One end and the slide rheostat RcOne end, the resistance R7's Other end ground connection, the slide rheostat RcThe other end be separately connected the amplifier U3Output end and automobile ECU.
8. the automobile control method according to claim 2 based on rail pressure signal and boost pressure signal, which is characterized in that The signal amplification unit includes amplifier U4, resistance R10, the third adjustment module that can change of division module and resistance value, institute State amplifier U4Noninverting input connect the output end of the division module, the input terminal of the division module connects the rail The signal output end of pressure sensor or the signal output end of air inlet pressure sensor, the resistance R10One end ground connection, the electricity Hinder R10The other end be separately connected the amplifier U4Reverse input end and the third adjustment module one end, the amplification Device U4Output end be separately connected the other end and automobile ECU of the third adjustment module.
9. the automobile control method according to claim 8 based on rail pressure signal and boost pressure signal, which is characterized in that The third adjustment module includes the adjusting branch of N item parallel connection, and the M articles adjusting branch includes a switch KMWith a resistance rM, The switch KMOne end connect one end of the third adjustment module, the switch KMThe other end connect the resistance rM's One end, the resistance rMThe other end connect the other end of the third adjustment module, wherein 0 < M≤N, and M and N be from So number.
10. the automobile control method according to claim 2 based on rail pressure signal and boost pressure signal, feature exist In the chip controls unit includes processor and several fix multiple amplifying unit, an input terminal of the processor The signal output end of mouth connection rail pressure sensor or the signal output end of air inlet pressure sensor, each fixed multiple amplifying unit Input terminal connect an output port of the processor, the output end of each fixed multiple amplifying unit is all connected with automobile ECU。
CN201910423211.9A 2019-05-21 2019-05-21 Automobile control method based on rail pressure signal and boost pressure signal Pending CN110080893A (en)

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US8935078B1 (en) * 2012-01-14 2015-01-13 Anthony Richard Lorts Hydraulic servo gas regulator for multi-fuel engine
CN205652081U (en) * 2016-04-29 2016-10-19 曾恩满 Remote control type ECU joins externally chip
CN108087104A (en) * 2017-12-26 2018-05-29 车行天下网络科技股份有限公司 A kind of control system of intelligent booster device
CN109017317A (en) * 2018-08-30 2018-12-18 深圳市比克动力电池有限公司 High-voltage interlocking detection circuit and automobile
CN109113876A (en) * 2018-08-27 2019-01-01 车行天下网络科技股份有限公司 A kind of intelligent engine fuel-economizing torque increase control device
CN109209663A (en) * 2018-10-23 2019-01-15 北京雄信息科技有限公司 A kind of automotive air intake pressure-regulating device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201103479Y (en) * 2007-10-22 2008-08-20 山东申普汽车控制技术有限公司 Device for automatically adjusting engine air input by air inlet pressure sensor
US8935078B1 (en) * 2012-01-14 2015-01-13 Anthony Richard Lorts Hydraulic servo gas regulator for multi-fuel engine
CN205652081U (en) * 2016-04-29 2016-10-19 曾恩满 Remote control type ECU joins externally chip
CN108087104A (en) * 2017-12-26 2018-05-29 车行天下网络科技股份有限公司 A kind of control system of intelligent booster device
CN109113876A (en) * 2018-08-27 2019-01-01 车行天下网络科技股份有限公司 A kind of intelligent engine fuel-economizing torque increase control device
CN109017317A (en) * 2018-08-30 2018-12-18 深圳市比克动力电池有限公司 High-voltage interlocking detection circuit and automobile
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