CN202023643U - Automatic adjusting device for air inflow of electronic fuel injection engine during deceleration under different elevation donations - Google Patents
Automatic adjusting device for air inflow of electronic fuel injection engine during deceleration under different elevation donations Download PDFInfo
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- CN202023643U CN202023643U CN2011200978798U CN201120097879U CN202023643U CN 202023643 U CN202023643 U CN 202023643U CN 2011200978798 U CN2011200978798 U CN 2011200978798U CN 201120097879 U CN201120097879 U CN 201120097879U CN 202023643 U CN202023643 U CN 202023643U
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- air inlet
- air inflow
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Abstract
The utility model discloses an automatic adjusting device for the air inflow of an electronic fuel injection engine during deceleration under different elevation donations, comprising a pressure sensor for acquiring atmospheric pressure, an engine rotation speed sensor, a throttle valve position sensor, a signal conditioning circuit, an engine controller and an air intake executing mechanism, wherein the pressure sensor, the engine rotation speed sensor and the throttle valve position sensor are connected with the input end of the engine controller after passing through the signal conditioning circuit, and the output end of the engine controller is connected with the air intake executing mechanism. The automatic adjusting device has the advantages of realizing the automatic adjustment of air intake when the engine is decelerated under the condition of different elevations, meeting the requirement for the idle speed performance of the engine and improving the safety performance of vehicles.
Description
Technical field
The utility model relates to automotive electric injection engine, belongs to automobile engine management system air inlet control technique field, relates in particular to the air inlet automatic control tegulatingdevice of electronic fuel injection engine decelerating mode under a kind of Different Altitude condition.
Background technique
Automotive electric injection engine is when decelerating mode, gas pedal is unclamped, closed throttle, the charge flow rate of motor is very low, do not replenish air inflow if do not regulate air inlet in good time, will cause engine air in-cylinder combustion difference even catch fire, will damage catalyst converter when serious, therefore, under decelerating mode, in order to overcome above problem and to obtain good driving, motor must have a minimum air inflow restriction under this operating mode, and this minimum air inflow provides enough air inlets to keep the stable and car load driving of motor.Under high conditions, because rarefaction of air, pressure reduces, the engine exhaust back pressure reduces, and the motor charging efficiency is improved, and at this moment the actual needed air quantity of motor reduces, demarcate the minimum air inflow of suitable motor in the plains region, it is just bigger than normal to have arrived the plateau; When decelerating mode, if the minimum air inflow that motor is still set according to the plains region is carried out air quantity control, the air that enters motor so is big with regard to the actual needed air quantity of ratio engine, cause motor to remain high rotational speed, high idle speed appears, can't get back to normal idling, influence vehicle safety.
The model utility content
At the prior art above shortcomings, the purpose of this utility model just is to provide the air inlet automatic control tegulatingdevice of electronic fuel injection engine decelerating mode under a kind of Different Altitude condition, the automatic adjusting of air inflow when this device can be realized engine retard under the Different Altitude condition, satisfy the engine idling performance requirement, improve vehicle safety performance.
To achieve these goals, the technical solution adopted in the utility model is such: the air inlet automatic control tegulatingdevice of electronic fuel injection engine decelerating mode under the Different Altitude condition, comprise the pressure transducer of gathering atmospheric pressure, engine rotation speed sensor, throttle position sensor, signal conditioning circuit, engine controller and air inlet actuator, described pressure transducer, engine rotation speed sensor and throttle position sensor link to each other with the input end of engine controller behind signal conditioning circuit, and the output terminal of this engine controller links to each other with air inlet actuator.
Further, described engine controller comprises throttle position judge module, motor slow down substantially air inflow computing module, motor plateau deceleration air inlet adjustment amount computing module, motor finally slow down air inflow computing module and engine charge actuator aperture computing module;
Engine rotation speed sensor links to each other with slow down the substantially input end of air inflow computing module and motor plateau deceleration air inlet adjustment amount computing module of motor respectively behind signal conditioning circuit;
Throttle position sensor links to each other with the input end of throttle position judge module behind signal conditioning circuit, and the output terminal of described throttle position judge module links to each other with slow down the substantially input end of air inflow computing module and motor plateau deceleration air inlet adjustment amount computing module of motor respectively;
The pressure transducer of gathering atmospheric pressure links to each other with the input end of motor plateau deceleration air inlet adjustment amount computing module behind signal conditioning circuit;
Slow down the substantially output terminal of air inflow computing module and motor plateau deceleration air inlet adjustment amount computing module of described motor inserts the motor air inflow computing module that finally slows down simultaneously, and the described motor air inflow computing module that finally slows down links to each other with air inlet actuator behind engine charge actuator aperture computing module.
Compared with prior art, advantage of the present utility model is: the automatic adjusting of air inflow when realizing engine retard under the Different Altitude condition, satisfy the engine idling performance requirement, under the prerequisite that does not influence the air inflow of car deceleration operating mode under the condition of Plain, to the motor car engine pine tar under the high conditions behind the door the air inflow of decelerating mode automatically adjust, overcome when the plateau, because atmospheric pressure reduces, the required air inflow of slowing down reduces, demarcate the minimum air inflow of suitable motor in the plains region, it is just bigger than normal to have arrived the plateau, when decelerating mode, if the minimum air inflow that motor is still set according to the plains region is carried out air quantity control, the air that enters motor so is big with regard to the actual needed air quantity of ratio engine, cause engine speed to remain high rotating speed, the problem of high idle speed occurs, improve the Security of vehicle.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the circuit block diagram of the utility model engine controller.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment: referring to Fig. 1, the air inlet automatic control tegulatingdevice of electronic fuel injection engine decelerating mode under the utility model Different Altitude condition, comprise the pressure transducer of gathering atmospheric pressure, engine rotation speed sensor, throttle position sensor, signal conditioning circuit, engine controller and air inlet actuator, described pressure transducer, engine rotation speed sensor and throttle position sensor link to each other with the input end of engine controller behind signal conditioning circuit, the output terminal of this engine controller links to each other with air inlet actuator, pressure transducer measures different atmospheric pressure value under different altitude height, engine controller is then according to different atmospheric pressures, calculate different air inflows, and then calculate and the air inlet actuator that obtains slowing down (air bypass valve ABV) aperture, drive the work of air inlet actuator again, thereby reach the purpose of regulating the deceleration air inflow.
Referring to Fig. 2, described engine controller comprises throttle position judge module, motor slow down substantially air inflow computing module, motor plateau deceleration air inlet adjustment amount computing module, motor finally slow down air inflow computing module and engine charge actuator aperture computing module.
Engine rotation speed sensor links to each other with slow down the substantially input end of air inflow computing module and motor plateau deceleration air inlet adjustment amount computing module of motor respectively behind signal conditioning circuit; Throttle position sensor links to each other with the input end of throttle position judge module behind signal conditioning circuit, and the output terminal of described throttle position judge module links to each other with slow down the substantially input end of air inflow computing module and motor plateau deceleration air inlet adjustment amount computing module of motor respectively; The pressure transducer of gathering atmospheric pressure links to each other with the input end of motor plateau deceleration air inlet adjustment amount computing module behind signal conditioning circuit.
Slow down the substantially output terminal of air inflow computing module and motor plateau deceleration air inlet adjustment amount computing module of described motor inserts the motor air inflow computing module that finally slows down simultaneously, and the described motor air inflow computing module that finally slows down links to each other with air inlet actuator behind engine charge actuator aperture computing module.
Concrete working procedure is as follows:
1. vehicle accelerator links to each other by wire digging line with throttle position sensor, when throttle position changes, throttle position also can corresponding thereupon change, and along with the variation of position, throttle position sensor can be exported different voltage signals to the throttle position judge module.Throttle position judge module interior reservoir has the corresponding relation of input voltage and throttle position.When driver's pine tar behind the door, throttle position sensor exports the correspondent voltage signal to the throttle position judge module, this moment, the throttle position judge module just can judge that throttle closes according to voltage signal, vehicle enters decelerating mode.The throttle position judge module sends signal activation motor slow down substantially air inflow computing module and motor plateau deceleration air inlet adjustment amount computing module then.
2. on the one hand, engine rotation speed sensor is imported engine controller with engine speed behind signal conditioning circuit, carries out slow down the substantially calculating of air inflow of motor.This is the form of a two dimension, and is as follows:
3. on the other hand, engine speed speed probe and pressure transducer are input to air input of engine by air plateau deceleration air inflow adjusting computing module simultaneously with engine speed and atmospheric pressure behind signal conditioning circuit, calculate owing to altitude changes to cause that variation in pressure needs the air inflow of regulating.For fear of the excessive engine speed drop problem that causes of regulated quantity, and the too small motor that causes of the regulated quantity problem of high idle speed still, the utility model has designed distinctive computational methods, and these computational methods comprise a three-dimensional table, go out the air inlet adjustment amount by computation of table lookup.Abscissa is an engine speed, and y coordinate is an atmospheric pressure value, is output as owing to altitude changes the air inflow cause that needs that variation in pressure produces reduce.See following table for details:
As can be seen from the table, the air inlet adjustment amount is along with the variation of engine speed difference and atmospheric pressure changes, and under different altitude height, the air inlet decrease is different, considers the difference of rotating speed simultaneously, and air inflow is regulated also difference.Under the force value of plains region correspondence, value in this form is 0, that is to say that the minimum limit value of air inflow need not reduce and regulate, only when rising to certain altitude, altitude just regulates, so just do not influence the operation of motor under the condition of plains region, can automatically adjust to air inlet under the high conditions again, reduce air inflow, avoid taking place the high idle speed situation.Form y coordinate external pressure is from 101.3kPa to 50kPa, and the height above sea level scope of adaptation can also be changed according to concrete needs, so that adapt to greater or lesser height above sea level coverage area from 0 height above sea level to 5600 meter.This form can also carry out special demarcation according to vehicle and motor different.After demarcation is finished, this form will be solidificated in the internal memory of engine controller.
4. final air quantity calculating module is subtracted each other the air inflow of two aspects input, obtains correct final required deceleration air inflow.Final deceleration air inflow inputs to engine air bypass valve aperture computing module, obtain the opening value of engine air bypass valve, finally open corresponding aperture, make suitable air quantity enter motor, keep engine speed stable by connecting circuit control idling bypass valve.
By above process, when under the different altitude height condition, during the car deceleration operating mode, the utility model control gear can avoid engine speed the irregular operating situation of high idle speed to occur to the control that automatically adjusts of engine retard air inflow.
The automatic adjusting of air inflow when the utility model is realized engine retard under the Different Altitude condition, satisfy the engine idling performance requirement, under the prerequisite that does not influence the air inflow of car deceleration operating mode under the condition of Plain, to the motor car engine pine tar under the high conditions behind the door the air inflow of decelerating mode automatically adjust, overcome when the plateau, because atmospheric pressure reduces, the required air inflow of slowing down reduces, demarcate the minimum air inflow of suitable motor in the plains region, it is just bigger than normal to have arrived the plateau, when decelerating mode, if the minimum air inflow that motor is still set according to the plains region is carried out air quantity control, the air that enters motor so is big with regard to the actual needed air quantity of ratio engine, causes engine speed to remain high rotating speed, the problem that high idle speed occurs, the Security that improves vehicle.
Claims (2)
1. the air inlet automatic control tegulatingdevice of electronic fuel injection engine decelerating mode under the Different Altitude condition, it is characterized in that: comprise pressure transducer, engine rotation speed sensor, throttle position sensor, signal conditioning circuit, engine controller and the air inlet actuator of gathering atmospheric pressure, described pressure transducer, engine rotation speed sensor and throttle position sensor link to each other with the input end of engine controller behind signal conditioning circuit, and the output terminal of this engine controller links to each other with air inlet actuator.
2. the air inlet automatic control tegulatingdevice of electronic fuel injection engine decelerating mode under the Different Altitude condition according to claim 1 is characterized in that: described engine controller comprises throttle position judge module, motor slow down substantially air inflow computing module, motor plateau deceleration air inlet adjustment amount computing module, motor finally slow down air inflow computing module and engine charge actuator aperture computing module;
Engine rotation speed sensor links to each other with slow down the substantially input end of air inflow computing module and motor plateau deceleration air inlet adjustment amount computing module of motor respectively behind signal conditioning circuit;
Throttle position sensor links to each other with the input end of throttle position judge module behind signal conditioning circuit, and the output terminal of described throttle position judge module links to each other with slow down the substantially input end of air inflow computing module and motor plateau deceleration air inlet adjustment amount computing module of motor respectively;
The pressure transducer of gathering atmospheric pressure links to each other with the input end of motor plateau deceleration air inlet adjustment amount computing module behind signal conditioning circuit;
Slow down the substantially output terminal of air inflow computing module and motor plateau deceleration air inlet adjustment amount computing module of described motor inserts the motor air inflow computing module that finally slows down simultaneously, and the described motor air inflow computing module that finally slows down links to each other with air inlet actuator behind engine charge actuator aperture computing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200978798U CN202023643U (en) | 2011-04-06 | 2011-04-06 | Automatic adjusting device for air inflow of electronic fuel injection engine during deceleration under different elevation donations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200978798U CN202023643U (en) | 2011-04-06 | 2011-04-06 | Automatic adjusting device for air inflow of electronic fuel injection engine during deceleration under different elevation donations |
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| Publication Number | Publication Date |
|---|---|
| CN202023643U true CN202023643U (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200978798U Expired - Lifetime CN202023643U (en) | 2011-04-06 | 2011-04-06 | Automatic adjusting device for air inflow of electronic fuel injection engine during deceleration under different elevation donations |
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| CN (1) | CN202023643U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711600A (en) * | 2013-12-23 | 2014-04-09 | 奇瑞汽车股份有限公司 | Altitude correction factor obtaining method and device |
| CN110469416A (en) * | 2019-09-29 | 2019-11-19 | 潍柴动力股份有限公司 | A kind of engine control, control device and engine |
| CN112283338A (en) * | 2020-10-29 | 2021-01-29 | 南京汽车集团有限公司 | Plateau gear shifting rotating speed correction strategy for AMT gearbox |
-
2011
- 2011-04-06 CN CN2011200978798U patent/CN202023643U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711600A (en) * | 2013-12-23 | 2014-04-09 | 奇瑞汽车股份有限公司 | Altitude correction factor obtaining method and device |
| US10215122B2 (en) | 2013-12-23 | 2019-02-26 | Chery Automobile Co., Ltd. | Method and apparatus for acquiring altitude correction coefficient |
| CN110469416A (en) * | 2019-09-29 | 2019-11-19 | 潍柴动力股份有限公司 | A kind of engine control, control device and engine |
| CN112283338A (en) * | 2020-10-29 | 2021-01-29 | 南京汽车集团有限公司 | Plateau gear shifting rotating speed correction strategy for AMT gearbox |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Northern New Chongqing 401122 ring Yunzao Road No. 3 Patentee after: United Automotive Electronics (Chongqing) Co., Ltd. Address before: 401122 Chongqing City, Yubei District economic development zone was opened Yunzao Road No. 3 Patentee before: CHONGQING CHANGAN VISTEON ENGINE CONTROL SYSTEMS CO., LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111102 |