Compressor control device for vehicle air conditioner
AssigneeDenso Corporation
InventorsYoshiaki Takano, Hiroshi Kishita, Kurato Yamasaki, Yasuhiko Niimi
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Abstract
A compressor control device is presented to control driving power of a compressor of a vehicle air conditioner. The control device is composed of a first means which detects ambient temperature conditions of the vehicle, a second means which decides a necessary air-conditioning capacity according to the ambient temperature conditions and a third means which transmits driving power to the compressor from the engine when the necessary cooling capacity is larger than a reference capacity and from the electric motor when said necessary cooling capacity is not larger than said reference capacity.
Claims14
A compressor control device for a vehicle air conditioner which includes a compressor selectively driven by one of an engine and an electric motor, said control device comprising:
- first means for detecting ambient conditions;
- second means for deciding necessary air-conditioning capacity according to said ambient conditions of said vehicle;
- and
- third means, connected between said second means and said compressor, for transmitting driving power to said compressor from said engine when said necessary cooling capacity is larger than a reference capacity, and from said electric motor when said necessary cooling capacity is not larger than said reference capacity.
A compressor control device for a vehicle air conditioner which include a variable compressor driven by an electric motor, said device comprising:
- first means for detecting ambient conditions;
- second means for deciding a necessary air-conditioning capacity according to said ambient condition of said vehicle;
- and
- third means for controlling said variable capacity according to said necessary air-conditioning capacity, said third means setting said variable capacity to a capacity smaller than said necessary air-conditioning capacity before operating said electric motor.
A compressor control device for a vehicle air conditioner which includes a compressor, an electric motor for driving said compressor, a sensor for detecting air-conditioning load, and a clutch mechanism disposed between said compressor and an engine, wherein operation of said compressor control device comprises steps of:
- deciding necessary air-conditioning capacity according to said air-conditioning load;
- comparing said necessary air-conditioning capacity with said a reference capacity;
- and
- controlling said clutch mechanism to connect said compressor with said engine when said necessary cooling capacity is larger than said reference capacity, and to disconnect said compressor from said engine and operate said electric motor to drive said compressor when said necessary cooling capacity is not larger than said reference capacity.
A compressor control device for an air conditioner for a vehicle which includes an air conditioner switch, a compressor, an electric motor for driving said compressor, a sensor for detecting air-conditioning load, and a clutch mechanism disposed between said compressor and an engine, wherein operation of said compressor control device comprises steps of:
- reading said air conditioning load;
- examining switch-on of said air conditioner switch;
- examining whether said vehicle stops or not;
- deciding necessary air-conditioning capacity according to said air-conditioning load;
- comparing said necessary air-conditioning capacity with said a reference capacity;
- and
- controlling said clutch mechanism to connect said compressor with said engine when said necessary cooling capacity is larger than said reference capacity, and to disconnect said compressor from said engine and operate said electric motor to drive said compressor when said vehicle stops and said necessary cooling capacity is not larger than said reference capacity.
Dependencies are inferred from the claim text.