Automobile idling air-conditioning control method, automobile air-conditioning system and automobile

Abstract

An automobile idling air-conditioning control method includes the following steps: start the air-conditioning system when the automobile is idling; collect the ambient temperature of the outside world; judge which temperature range the collected ambient temperature is in, and the temperature range includes the preset temperature range from low temperature to high temperature. Each temperature range corresponds to a target idle speed of the engine, and the target idle speed corresponding to each temperature range from low temperature to high temperature increases sequentially; according to the judgment result, the engine is controlled to match the temperature range of the current ambient temperature. The corresponding target idle speed runs, and the engine drives the air conditioner compressor to run accordingly. The automobile idling air-conditioning control method can simultaneously meet the air-conditioning requirements of different regions and seasons, and can increase the speed of the air-conditioning compressor when the automobile is idling according to the external ambient temperature, so that the air-conditioning system can meet the occupant's requirements for air-conditioning comfort. The invention also relates to an automobile air conditioning system and an automobile.

Description

technical field [0001] The invention relates to the technical field of automobile air-conditioning, in particular to an automobile idle air-conditioning control method, an automobile air-conditioning system and an automobile. Background technique [0002] The air-conditioning system is a very common configuration in modern cars. When the external environment temperature is low, the air-conditioning system starts a heating cycle to increase the temperature in the cockpit; when the external environment temperature is high, the air-conditioning system starts a refrigeration cycle to reduce The temperature in the cockpit, and the higher the speed of the air conditioner compressor, the greater the amount of refrigerant compressed, and the better the cooling effect of the cockpit. [0003] However, when the external ambient temperature is high and the car is idling, the speed of the car engine is a fixed value (for example, the idle speed of the engine is 800rpm), and the air cond...

AI Technical Summary

Problems solved by technology

[0003] However, when the external ambient temperature is high and the car is idling, the speed of the car engine is a fixed value (for example, the idle speed of the engine is 800rpm), and the air conditioner compressor needs the engine to provide the torque for its operation, so the air conditioner compressor Running at a fixed speed, the amount of refrigerant compressed is a fixed value, the cooling effect of the cockpit is poor, and it cannot meet the passengers' needs for air conditioning comfort

Moreover, for the same model in different regions, such as tropical or subtropical regions, occupants have different cooling requirements for the air-conditioning system, that is, the cooling requirements in tropical regions are greater than in subtropical regions, and the engine speed is a fixed value when the car is idling. Therefore, for the same model, the engine management system (Engine Management System; EMS) that controls the engine speed needs to be redeveloped for different regions, that is, the engine management system that requires a higher engine speed when the car is idling in the tropics, and the engine management system that requires a higher engine speed when the car is idling in the subtropical region. The engine management system with normal engine speed increases the cost and cycle of vehicle development

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