Power consumption control method for vehicle air conditioning

A technology of power consumption control and automotive air conditioning, which is applied in engine control, vehicle components, air handling equipment, etc., can solve the problems of high fuel consumption pressure and inability to know

Inactive Publication Date: 2008-11-26
CHERY AUTOMOBILE CO LTD
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Problems solved by technology

[0002] At present, the international crude oil price has been rising, and the pressure on the fuel consumption of automobiles is increasing. The economy and environmental protection of automobiles are increasingly the focus of automobile development, and the operation of automobile air conditioners is an important reason for the increase in fuel consumption of automobiles. The current engine The ECU only starts the compressor according to the request signal of the A/C switch of the air conditioner (if other conditions of the engine permit), and at the same time, the engine ECU gi

Method used

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  • Power consumption control method for vehicle air conditioning
  • Power consumption control method for vehicle air conditioning
  • Power consumption control method for vehicle air conditioning

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Embodiment Construction

[0016] As shown in Figure 1 and Figure 2, there are two ways of signal transmission between the air conditioner controller (1) and the engine ECU (3), one is the PIN-to-PIN line transmission mode, and the other is the CAN signal transmission mode. That is: the air conditioner controller outputs a valid request signal (+12V) from the PIN; or the air conditioner controller directly sends the AC request signal from the CAN; the pressure sensor converts the detected pressure signal of the air conditioner system into a voltage signal, and the ECU according to the change of the voltage signal Adjust the power output of the engine.

[0017] Figure 3 shows the linear relationship between the air-conditioning system pressure and the output voltage of the air-conditioning pressure sensor, where the meanings of each label are: 0 output Voltage: output voltage

[0018] Applied Pressure: the pressure of the air conditioning system

[0019] Mpa gage: pressure unit

[0020] VDC: unit of vo...

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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 [0001] The invention relates to the field of an automobile air-conditioning system in which an engine drives a compressor, in particular to the power consumed by the engine during the operation of the automobile air-conditioning system and a logic control method for the engine ECU. Background technique [0002] At present, the international crude oil price has been rising, and the pressure on the fuel consumption of automobiles is increasing. The economy and environmental protection of automobiles are increasingly the focus of automobile development, and the operation of automobile air conditioners is an important reason for the increase in fuel consumption of automobiles. The current engine The ECU only starts the compressor according to the request signal of the A / C switch of the air conditioner (if other conditions of the engine permit), and at the same time, the engine ECU gives a torque compensation signal to increase the fuel injection quantity, thereby ...

Claims

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Application Information

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IPC IPC(8): F02D29/04B60H1/00
Inventor 娄辉
Owner CHERY AUTOMOBILE CO LTD
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