CN101311513A - Power consumption control method for vehicle air conditioning - Google Patents
Power consumption control method for vehicle air conditioning Download PDFInfo
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- CN101311513A CN101311513A CNA2008100250389A CN200810025038A CN101311513A CN 101311513 A CN101311513 A CN 101311513A CN A2008100250389 A CNA2008100250389 A CN A2008100250389A CN 200810025038 A CN200810025038 A CN 200810025038A CN 101311513 A CN101311513 A CN 101311513A
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- air
- control method
- power consumption
- consumption control
- controlled unit
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000446 fuel Substances 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention relates to a power consumption control method of a vehicle air conditioning; wherein, the dynamic load change for the running of a vehicle air conditioning system is transferred to an engine management system ECU by a pressure sensor; the engine management system ECU corrects the air inlet amount of the engine and reduces the oil spray amount according to the load change of the air conditioning system, thereby achieving the goal of precisely controlling the output power of the engine and an air-fuel ratio.
Description
Technical field
The present invention relates to the automotive air-conditioning system field of engine-driving compressor operating, the power of consumption of engine and the logic control method of Engine ECU when being specifically related to the automotive air-conditioning system operation.
Background technique
International Crude Oil is going up always at present, it is increasing that the fuel oil of automobile takes pressure, the Economy of automobile and environmental protection more and more are the emphasis of development of automobile, and the car air conditioner operation is the major reason that automobile fuel consumption increases, and present Engine ECU just starts compressor operating according to air-conditioning A/C switch request signal (under the situation of other conditions permits of motor), Engine ECU provides a torque compensation signal simultaneously increases fuel injection quantity, (fuel injection quantity that this compensating signal increases is certain thereby the output power that improves motor is come Driven Compressor, as long as compressor is opened, the load variations with the system of air-conditioning does not change), particularly under idling operation, because Engine ECU can not be learnt current air-conditioning system load, can only provide a maximum value (normally needing to increase by 100～150rpm rotating speed) and avoid flame-out when system calibrating.And the present invention carries out new control (changing the power output of adjusting motor by air conditioning load) thereby a kind of new method that reduces the power consumption of air condition compressor on the basis of existing compressor (power is by engine-driving), finally realizes fuel-economizing, reduces discharging.
The variation in pressure of air-conditioning system directly reflects the load variations of air-conditioning system.
Summary of the invention
The objective of the invention is to logic and program, cooperate pressure sensor and variable compressor in the air-conditioning system, realize the minimizing and the minimizing tail gas emission of harmful substances of the fuel consume of car load by the control air-conditioning of redesign Engine ECU;
Technological scheme of the present invention is a kind of power consumption control method for vehicle air conditioning, the load variations that the steps include: automotive air-conditioning system by sensor passes to engine electric-controlled unit ECU; Engine electric-controlled unit ECU receives this signal, handles back output corrected parameter; Engine electric-controlled unit ECU controls the output power of motor according to this corrected parameter.
Wherein the sensor adopts pressure sensor after its pressure signal with air-conditioning system is converted to voltage signal, is passed to engine electric-controlled unit ECU.
Engine electric-controlled unit ECU comes the output power of motor is controlled by air inflow and the fuel injection quantity of revising motor.
Adopt line transfer mode or CAN bus (controller local area network--controller areanetwork) the signal transfer mode of pin PIN between air-conditioner controller in the air-conditioning system and the engine electric-controlled unit ECU to pin PIN.
The logic of control air-conditioning can be accepted the signal that sensor is exported in real time with being programmed among the engine electric-controlled unit ECU.
In sum, the load variations of air-conditioning system is through the detection of sensor, the output voltage variable signal, be passed to engine electric-controlled unit ECU, and export corresponding corrected parameter, engine electric-controlled unit ECU changes the air inflow and the fuel injection quantity of motor by this corrected parameter, and further changes the output power and the air fuel ratio of motor.
The dynamic load variations of automotive air-conditioning system operation is passed to engine management system ECU by pressure transducer, engine management system ECU is according to load variations (the system pressure signal that pressure transducer detects of air-conditioning system, this pressure signal is converted into voltage signal) revise the air inflow of motor, reduce fuel injection quantity, reach the purpose of accurate control engine air-fuel ratio.That is to say the corrected parameter of this engine output of variation that in existing engine management system, increases the air-conditioning system load.
Description of drawings
Fig. 1: AC request is carried out signal by PIN and is transmitted schematic representation;
Fig. 2: AC request is carried out signal by the CAN bus and is transmitted schematic representation;
Fig. 3: the linear relationship chart of air-conditioning system pressure and output voltage;
Reference character: air-conditioner controller (1), pressure transducer (2), Engine ECU (3).
Embodiment
As depicted in figs. 1 and 2, air-conditioner controller (1) has dual mode with the signal transmission of Engine ECU (3), a kind of is to adopt the line transfer mode of PIN to PIN, and a kind of is to adopt CAN signal transfer mode, that is: air-conditioner controller from PIN export effective demand signal (+12V); Or air-conditioner controller is gone up directly transmission AC demand signal from CAN; Pressure transducer is converted into voltage signal to the pressure signal of the air-conditioning system that detects, and ECU adjusts the power output of motor according to the variation of voltage signal.
Be illustrated in figure 3 as the air-conditioning system pressure of A/C pressure sensor and the linear relationship chart of output voltage, wherein the implication of each mark is respectively: 0utput Voltage: output voltage
Applied Pressure: the pressure of air-conditioning system
Mpa gage: pressure unit
VDC: voltage unit
The load variations of air-conditioning system is passed to Engine ECU by pressure transducer, the corrected parameter of the load variations of air-conditioning system as adjustment air input of engine by air (air-intake load).
The car load assembling has the air-conditioning system of A/C pressure sensor, the program of the ECU of engine management system control air-conditioning and logic redesign, make Engine ECU can receive the dynamic voltage signal of A/C pressure sensor output constantly, Engine ECU is according to the voltage change signal of the representative load that receives, pass through internal conversion, the corrected parameter of the air inflow (air-intake load) of engine air is adjusted in Engine ECU output, thereby reduces fuel injection quantity, reduces the power output of motor.
Claims (8)
1, a kind of power consumption control method for vehicle air conditioning is characterized in that:
The load variations of automotive air-conditioning system by sensor passes to engine electric-controlled unit ECU;
Engine electric-controlled unit ECU receives this signal, handles back output corrected parameter;
Engine electric-controlled unit ECU controls the output power of motor according to this corrected parameter.
2, power consumption control method for vehicle air conditioning according to claim 1 is characterized in that, the sensor adopts pressure sensor after its pressure signal with air-conditioning system is converted to voltage signal, is passed to engine electric-controlled unit ECU.
3, power consumption control method for vehicle air conditioning according to claim 1 and 2 is characterized in that, a variable compressor is set in the air-conditioning system.
4, power consumption control method for vehicle air conditioning according to claim 1 and 2 is characterized in that, engine electric-controlled unit ECU comes the output power of motor is controlled by air inflow and the fuel injection quantity of revising motor.
5, power consumption control method for vehicle air conditioning according to claim 1 is characterized in that, adopts line transfer mode or the CAN bus signals transfer mode of pin PIN to pin PIN between air-conditioner controller in the air-conditioning system and the engine electric-controlled unit ECU.
6, power consumption control method for vehicle air conditioning according to claim 1 is characterized in that, the logic of control air-conditioning can be accepted the signal that sensor is exported in real time with being programmed among the engine electric-controlled unit ECU.
7, power consumption control method for vehicle air conditioning according to claim 6 is characterized in that, the sensor adopts pressure sensor, and its pressure signal with air-conditioning system is converted to dynamic voltage signal.
8, power consumption control method for vehicle air conditioning according to claim 1, it is characterized in that, the load variations of air-conditioning system is through the detection of sensor, the output voltage variable signal, be passed to engine electric-controlled unit ECU, and exporting corresponding corrected parameter, engine electric-controlled unit ECU changes the air inflow and the fuel injection quantity of motor by this corrected parameter, and further changes the output power and the air fuel ratio of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100250389A CN101311513A (en) | 2008-04-24 | 2008-04-24 | Power consumption control method for vehicle air conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100250389A CN101311513A (en) | 2008-04-24 | 2008-04-24 | Power consumption control method for vehicle air conditioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101311513A true CN101311513A (en) | 2008-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100250389A Pending CN101311513A (en) | 2008-04-24 | 2008-04-24 | Power consumption control method for vehicle air conditioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101311513A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696954A (en) * | 2013-12-17 | 2014-04-02 | 重庆长安汽车股份有限公司 | External control variable displacement compressor torque compensating method and system |
| CN104512215A (en) * | 2013-09-29 | 2015-04-15 | 上海汽车集团股份有限公司 | Method for controlling automobile air conditioner compressor and device realizing method |
| CN108693949A (en) * | 2017-04-05 | 2018-10-23 | 丰田自动车株式会社 | Vehicular system |
-
2008
- 2008-04-24 CN CNA2008100250389A patent/CN101311513A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104512215A (en) * | 2013-09-29 | 2015-04-15 | 上海汽车集团股份有限公司 | Method for controlling automobile air conditioner compressor and device realizing method |
| CN103696954A (en) * | 2013-12-17 | 2014-04-02 | 重庆长安汽车股份有限公司 | External control variable displacement compressor torque compensating method and system |
| CN108693949A (en) * | 2017-04-05 | 2018-10-23 | 丰田自动车株式会社 | Vehicular system |
| CN108693949B (en) * | 2017-04-05 | 2021-07-20 | 丰田自动车株式会社 | Vehicle system |
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Open date: 20081126 |