CN109209663A - A kind of automotive air intake pressure-regulating device - Google Patents
A kind of automotive air intake pressure-regulating device Download PDFInfo
- Publication number
- CN109209663A CN109209663A CN201811234710.5A CN201811234710A CN109209663A CN 109209663 A CN109209663 A CN 109209663A CN 201811234710 A CN201811234710 A CN 201811234710A CN 109209663 A CN109209663 A CN 109209663A
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- voltage
- circuit
- amplifier
- amplifier circuit
- regulating device
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- 230000003321 amplification Effects 0.000 claims abstract description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract 2
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 5
- 230000001133 acceleration Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- 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
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
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- 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
-
- 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
- F02D41/3005—Details not otherwise provided for
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- 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
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- 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
- F02D2041/2068—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements
-
- 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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1002—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 application provides a kind of automotive air intake pressure control circuit, including sequentially connected voltage amplifier circuit, voltage follower circuit, wherein, one end of voltage amplifier circuit connects automobile air inlet pressure sensor, for receiving the voltage signal of automobile air inlet pressure sensor transmission, voltage amplifier circuit sends the voltage signal of amplification to the voltage follower circuit connecting with the other end of voltage amplifier circuit for amplifying voltage signal；One end of voltage follower circuit connects voltage amplifier circuit, and the other end thus is avoided that the influence when accessing vehicle electronic control unit to said amplifier circuitry, keeps said amplifier circuitry amplification factor relatively stable for connecting vehicle electronic control unit.Using the present invention, ECU can be made to obtain amplified pressure sensor signal value in advance to change control in advance, increase distributive value, to increase engine output torque, reducing turbine lag bring influences, and engine is made to accelerate faster, to reduce the automobile acceleration time.
Description
Technical field
The present invention relates to electronic technology fields, more particularly, to a kind of automotive air intake pressure-regulating device.
Background technique
Generally use turbocharger on automobile at present, it is therefore intended that increase air inflow, improve power, improve economy,
Improve discharge.By compressed air, the density of the induced air of engine is improved, so as to improve the power per liter of engine.
Simultaneously because the mixed firinor fuel burning adjusting of engine is improved, efficiency of combustion is improved, can also play and save fuel oil and drop
The effect of low emission.It is one important technological progress of Modern Engine.
Turbo charged principle is: if in the identical unit time, it can be the mixing of more air and fuel oil
Gas force squeeze into cylinder (combustion chamber) carry out compression fire movement (small capacity engine energy " sucking " and big capacity it is identical
Air improves volumetric efficiency), the power output bigger compared with natural intake engine just can be generated under identical revolving speed.
In general, engine can promote 30%-40% after the movement for cooperating such a " forcing air inlet " at least
Extra power, so surprising effect is exactly that turbocharger makes us the reason of being so fond that will not let out of one's hand.Moreover obtain perfect burning
Efficiency and power is allowed to significantly improve, is originally exactly that turbo charge system can be provided giving vehicle maximum value place.
The turbo charged course of work is as follows:
(1) exhaust gas of engine discharge, pushes the turbine wheel at turbine exhaust end, and is allowed to rotate.Thus it just can drive
The compressor impeller for the other side being attached thereto also while rotating.
(2) air is forced inspiration from air inlet by compressor impeller, and after the rotary compression of blade, is entered back into caliber and got over
Carry out bigger diffusion channel outflow, these compressed air are by injection combustor inner cylinder.
(3) engine having is equipped with intercooler, is reduced with this by the temperature of compressed air, improves density, prevents engine
Generate pinking.
(4) air for being compressed (and cooled rear) enters cylinder through air inlet pipe, participates in work by combustion.
(5) exhaust gas after burning is discharged from exhaust pipe, into turbine, repeats the movement of above (1).
But since the pressure of booster is by the control of ECU, the ideal that can't reach user in practical applications is wanted
It asks, because booster is driven by engine exhaust, when driver's speed-raising, turbine has hysteresis, and engine is caused to accelerate
Delay.
Summary of the invention
In order to make ECU change control in advance, increase engine output torque, reducing turbine lag bring influences,
Accelerate engine faster, the present invention proposes a kind of admission pressure regulating device, including sequentially connected voltage amplifier circuit, electricity
Pressure follows circuit, wherein one end of voltage amplifier circuit connects automobile air inlet pressure sensor, to receive automotive air intake pressure biography
The voltage signal that sensor is sent, voltage amplifier circuit are sent to and electricity for amplifying voltage signal, and by the voltage signal of amplification
Press the voltage follower circuit of the other end connection of amplifying circuit；One end of voltage follower circuit connects voltage amplifier circuit, another
Voltage signal is amplified for connecting vehicle electronic control unit, for stablizing output in end, in this way can be to avoid in access automobile electricity
To the influence of voltage amplifier circuit when sub-control unit, keep amplifying circuit amplification factor relatively stable.
Further, voltage amplifier circuit includes the first precision operational-amplifier, the output of the first precision operational-amplifier
End connects the negative input end of the first precision operational-amplifier by bleeder circuit, and the positive input terminal of the first precision operational-amplifier is used
In connection air inlet pressure sensor.Preferably, the voltage amplification ratio of voltage amplifier circuit is 1.2.
Further, device further includes the clipping module being connected with one end of voltage amplifier circuit, for that will enter electricity
The boost pressure signal level of pressure amplifying circuit is limited between the supply voltage of air inlet pressure sensor and 0V.
Further, the first current limliting module is connected between amplifying circuit and clipping module.
Further, voltage follower circuit includes the second precision operational-amplifier, the output of the second precision operational-amplifier
The negative input end of the second precision operational-amplifier of end connection, the positive input terminal of the second precision operational-amplifier pass through the second current limliting mould
The output end of block connection voltage amplifier circuit.
Further, the second current limliting module and filtering mould are also connected between voltage amplifier circuit and voltage follower circuit
Block, filter module is for filtering out high-frequency interferencing signal.
Further, voltage follower circuit output end connect isolation module, with reduce device external circuits to voltage with
It is had an impact with circuit.
Through the invention, ECU can be made to obtain amplified pressure sensor signal value in advance to change in advance through the invention
Become control, increase distributive value, to increase engine output torque, reducing turbine lag bring influences, and makes engine
Accelerate faster, to reduce the automobile acceleration time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the automotive air intake pressure-regulating device of one embodiment of the invention；
Fig. 2 is the circuit diagram of the automotive air intake pressure-regulating device of one embodiment of the invention.
As shown, the structure in order to clearly realize the embodiment of the present invention, be labelled in figure specific structure and
Device, but signal needs are only for, it is not intended to limit the invention in the specific structure, device and environment, according to specific
Need, these devices and environment can be adjusted or be modified by those skilled in the art, the adjustment that is carried out or
Person's modification still includes in the range of appended claims.
Specific embodiment
Automotive air intake pressure-regulating device provided by the invention is retouched in detail in the following with reference to the drawings and specific embodiments
It states.
It is done herein with explanation, in order to keep embodiment more detailed, the following examples are best, preferred implementation
Some well-known technique those skilled in the art can also be used other alternatives and implement by example；And attached drawing part
Merely to more specifically describing embodiment, and it is not intended to specifically limit the present invention.
As shown in Figure 1, the present invention proposes a kind of admission pressure regulating device, including sequentially connected voltage amplifier circuit,
Voltage follower circuit, wherein one end of voltage amplifier circuit connects automobile air inlet pressure sensor, for receiving automotive air intake pressure
The voltage signal that force snesor is sent, voltage amplifier circuit send the voltage signal of amplification to for amplifying voltage signal
The voltage follower circuit being connect with the other end of voltage amplifier circuit；One end of voltage follower circuit connects voltage amplifier circuit,
The other end stablizes the voltage signal of output amplification for connecting vehicle electronic control unit.
Specifically, I N-terminal is the input terminal of admission pressure regulating device of the present invention, is passed for connecting automotive air intake pressure
Sensor.OUT terminal is the output end of admission pressure regulating device of the present invention, for connecting vehicle electronic control unit (ECU), and will
Voltage signal is sent to ECU, to realize that engine faster accelerates, reduces the automobile acceleration time.
In one embodiment, voltage amplifier circuit as shown in Figure 2 includes the first precision operational-amplifier U1, and first is accurate
The output end (pin 1) of operational amplifier U1 connects the negative input end (pipe of the first precision operational-amplifier U1 by bleeder circuit
Foot 2), the positive input terminal (pin 3) of the first precision operational-amplifier U1 is for connecting air inlet pressure sensor.Bleeder circuit is by
The 2nd pin and resistance R5, R3 of one precision operational-amplifier U1 is constituted.In one embodiment, the first precision operational-amplifier
After the 2nd pin of U1 and resistance R5, R3 connect together, passes through the other end of resistance R3 and the 1st pin of U1 and connect together, R5
The other end ground connection.In this way, the voltage that the 1st pin of the first precision operational-amplifier U1 exports is positive input terminal (pin 3)
(1+R3/R5) times.Empirically it is worth, adjusts the value of R5, R3, keep the 1st pin voltage of the first precision operational-amplifier U1 close
1.2 times of the 3rd pin voltage of approximately equal to U1 can make engine speed-raising 5%~10%, second resistance R3 and third in this way
Resistance R5 is precision resistance.
In one embodiment, admission pressure sensing can also be connected by clipping module in the front end of voltage amplifier circuit
Device, the effect of clipping module are that the boost pressure signal level for entering voltage amplifier circuit is limited in air inlet pressure sensor
Between supply voltage and 0V.In one embodiment, clipping module is made of two concatenated diodes, I N-terminal and the first essence
The positive input terminal of close operational amplifier U1 links together with the point that concatenates of diode, other two end of diode is separately connected
The input voltage on ground and air inlet pressure sensor.
In one embodiment, the first current limliting module is connected between voltage amplifier circuit and clipping module, for example, current limliting
Module can be made of first resistor R1.
Voltage follower circuit includes the second precision operational-amplifier, the output end (pin 7) of the second precision operational-amplifier
The negative input end (pin 6) of the second precision operational-amplifier is connected, the positive input terminal (pin 5) of the second precision operational-amplifier is logical
Cross the output end of the second current limliting module connection voltage amplifier circuit.In one embodiment, the second current limliting module is by second resistance
R2 is constituted.Voltage follower circuit positive input terminal can also be connected with filter module, for filtering out high-frequency interferencing signal, in a reality
It applies in example, filter module is made of capacitor C1.
The level signal being amplified is input to the 5th pin of the second precision operational-amplifier U2, the second accurate operation amplifier
The 6th pin of device U2 and the 7th pin are simultaneously joined together to form voltage follower, make the 7th of the second precision operational-amplifier U2
Pin output level is approximately equal to the 5th pin voltage of U2, and output voltage stabilization.
The output end of voltage follower circuit can drop in this way by isolation module output voltage signal to automobile ECU
The influence that low device ECU generates voltage follower circuit.In one embodiment, isolation module is made of the 4th resistance R4.
Voltage follower circuit can also avoid the influence when accessing vehicle electronic control unit to voltage amplifier circuit, make
Amplifying circuit amplification factor is relatively stable.
The specific work process of admission pressure regulating device of the invention is as follows:
The air inlet pressure sensor of automotive interior is connected with admission pressure regulating device first, allows air inlet pressure sensor
Admission pressure voltage signal is transmitted to the I N-terminal for inputting the device；The OUT terminal of device is connected to automobile ECU.The air inlet of automobile
Pressure sensor is converted into admission pressure the voltage signal of 0~5V, and admission pressure is bigger, and the voltage of sensor output is higher,
Conversely, admission pressure is smaller, the voltage of sensor output is lower.Automobile ECU controls distributive value by voltage signal height
Size, thus increase/reduce engine output torque.
It is acted on by the clipping of diode D1, D2, is limited in pressure signal level between 5V and GND, R1 plays isolation limit
Stream effect, signal by R1 enter the first precision operational-amplifier U1 the 3rd pin, the 2nd of the first precision operational-amplifier U1 the
Pin and resistance R5, R3 constitute voltage amplifier circuit, and the 1st pin voltage of the first precision operational-amplifier U1 is made to be approximately equal to U1
The 3rd pin voltage 1.2 times (merely illustrative herein, rather than limit).Simultaneously by resistance R2 be isolated rear step voltage with
With circuit, capacitor C1 filters out high-frequency interferencing signal, and the level signal being amplified is input to the 5th of the second precision operational-amplifier U2
Pin, the 6th pin and the 7th pin of the second precision operational-amplifier U2 are simultaneously joined together to form voltage follower, make second
The 7th pin level of precision operational-amplifier U2 is approximately equal to the 5th pin voltage of U2.
The sensor level signal of the 7th pin of second precision operational-amplifier U2 output is output to OUT terminal by R4, and R4 rises
Buffer action keeps apart the 7th pin of OUT terminal and U2, influences the circuit of OUT output end on U2 minimum.
The level signal being amplified is bigger than original sensor level signal, and such signal is input to the air inlet pressure of automobile ECU
Force signal input port can make ECU obtain amplified pressure sensor signal value in advance to change control in advance, increase oil spout
Amount, to increase engine output torque, reducing turbine lag bring influences, and engine is made to accelerate faster, to reduce vapour
The vehicle acceleration time.
Certainly, there are also various other embodiments by the present invention, without departing from the spirit and substance of the case in the present invention, are familiar with this
The technical staff in field can make various corresponding changes according to the present invention, but this change all should belong to power appended by the present invention
The protection scope that benefit requires.
Claims (8)
1. a kind of admission pressure regulating device, including sequentially connected voltage amplifier circuit and voltage follower circuit, feature exist
In:
One end of the voltage amplifier circuit connects automobile air inlet pressure sensor, to receive the automobile air inlet pressure sensor
The voltage signal of transmission, the voltage amplifier circuit send the voltage signal of amplification to for amplifying the voltage signal
The voltage follower circuit being connect with the other end of the voltage amplifier circuit；And
One end of the voltage follower circuit connects the voltage amplifier circuit, the other end stablizes the voltage letter for exporting the amplification
Number.
2. admission pressure regulating device according to claim 1, which is characterized in that the voltage amplifier circuit includes first
The output end of precision operational-amplifier, first precision operational-amplifier connects the described first accurate operation by bleeder circuit
The negative input end of amplifier, the positive input terminal of first precision operational-amplifier are connected to the automotive air intake pressure sensing
Device.
3. admission pressure regulating device according to claim 2, which is characterized in that the admission pressure regulating device is also wrapped
The clipping module being connected with one end of the voltage amplifier circuit is included, the clipping module will be for that will enter the voltage amplification
The boost pressure signal level of circuit is limited between the supply voltage and 0V of the air inlet pressure sensor.
4. admission pressure regulating device according to claim 3, which is characterized in that the amplifying circuit and the clipping mould
The first current limliting module is connected between block.
5. admission pressure regulating device according to claim 2, which is characterized in that the voltage of the voltage amplifier circuit is put
Big ratio is 1.2.
6. admission pressure regulating device according to claim 2, which is characterized in that the voltage amplifier circuit and the electricity
Pressure, which follows, is connected with the second current limliting module and filter module between circuit, the filter module is for filtering out high-frequency interferencing signal.
7. admission pressure regulating device according to claim 2, which is characterized in that the voltage follower circuit includes second
Precision operational-amplifier, it is defeated that the output end of second precision operational-amplifier connects bearing for second precision operational-amplifier
Enter end, the positive input terminal of second precision operational-amplifier connects the defeated of the voltage amplifier circuit by the second current limliting module
Outlet.
8. admission pressure regulating device according to claim 2, which is characterized in that the output end of the voltage follower circuit
Isolation module is connected, to reduce the influence that described device external circuits generate the voltage follower circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234710.5A CN109209663A (en) | 2018-10-23 | 2018-10-23 | A kind of automotive air intake pressure-regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234710.5A CN109209663A (en) | 2018-10-23 | 2018-10-23 | A kind of automotive air intake pressure-regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109209663A true CN109209663A (en) | 2019-01-15 |
Family
ID=64981283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811234710.5A Pending CN109209663A (en) | 2018-10-23 | 2018-10-23 | A kind of automotive air intake pressure-regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109209663A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080893A (en) * | 2019-05-21 | 2019-08-02 | 车行天下网络科技股份有限公司 | Automobile control method based on rail pressure signal and boost pressure signal |
| CN110080890A (en) * | 2019-05-21 | 2019-08-02 | 车行天下网络科技股份有限公司 | The automobile sub-controlling unit compared based on rail pressure signal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5606947A (en) * | 1995-03-29 | 1997-03-04 | Hong; Fu C. | Automotive acceleration-horsepower control means |
| CN205652081U (en) * | 2016-04-29 | 2016-10-19 | 曾恩满 | Remote control type ECU joins externally chip |
-
2018
- 2018-10-23 CN CN201811234710.5A patent/CN109209663A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5606947A (en) * | 1995-03-29 | 1997-03-04 | Hong; Fu C. | Automotive acceleration-horsepower control means |
| CN205652081U (en) * | 2016-04-29 | 2016-10-19 | 曾恩满 | Remote control type ECU joins externally chip |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080893A (en) * | 2019-05-21 | 2019-08-02 | 车行天下网络科技股份有限公司 | Automobile control method based on rail pressure signal and boost pressure signal |
| CN110080890A (en) * | 2019-05-21 | 2019-08-02 | 车行天下网络科技股份有限公司 | The automobile sub-controlling unit compared based on rail pressure signal |
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Application publication date: 20190115 |