Automobile air conditioner control method and system and automobile

Abstract

The invention discloses an automobile air conditioner control method and system and anautomobile. The method comprises the steps of judging whether the automobile meets a low-temperature heating condition or not after an air conditioner controller obtains a heating instruction, and transmitting a low-temperature heating mode starting signal to a gearbox controller if the automobile meets the low-temperature heating condition,and after the gearbox controller receives the low-temperature heating mode starting signal, determining the gear shifting point of the gearbox according to a low-temperature heating gear shifting curve, the gear shifting point of the low-temperature heating gear shifting curve beinghigher than the gear shifting point of a gear shifting curve under the normal working condition so as to control the gearbox to delay gear shifting. According to the method, the hardware cost and weight of the whole automobile are not increased, the rotating speed of the engine is indirectly adjusted by changing the gear shifting curve of the gearbox controller, the effect of dynamically increasing the starting water temperature is achieved, and the problem that the cost needs to beincreased when the heating performance of an air conditioner of an existing internal combustion engine automobile is improved is solved.

Description

technical field [0001] The invention relates to the technical field of automobile air-conditioning control, in particular to an automobile air-conditioning control method, system and vehicle. Background technique [0002] Car air conditioner is an essential part of the whole car, and the two most important and basic functions are cooling and heating. For traditional internal combustion engine vehicles, air conditioning and heating generally heat the engine coolant through the engine to exchange heat with the cold air from the cabin to heat up the cabin. The water pump sends the engine coolant to the heater core, while the water valve controls the flow. The temperature inside the cabin is controlled by the air-conditioning electronic control unit (ECU) by collecting signals such as temperature sensors and temperature setting values, and by controlling the opening of the mixing damper inside the heating ventilation and air conditioning system (HVAC). temperature, to complete ...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides an automobile air conditioning control method, system and vehicle, aiming at solving the problem of high cost of improving air conditioning and heating performance in internal combustion engine automobiles

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