| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent an occupant from feeling discomfort due to noise of an electric compressor, and to suppress power consumption by limiting appropriately speed of the electric compressor low. <P>SOLUTION: A vehicle air-conditioning device includes a vehicle speed detection means, the electric compressor, an electric compressor rotation speed control means, and a control means setting a rotation speed upper limit value of the electric compressor, the device includes a refrigerant pressure detecting means, a fan blowing air amount setting means, an atmospheric temperature detection means, and an evaporator temperature detection means, and the control means calculates a first electric compressor rotation speed upper limit candidate on the basis of the vehicle speed, calculates a second electric compressor rotation speed upper limit candidate on the basis of the refrigerant pressure, calculates a third electric compressor rotation speed upper limit value candidate required for air conditioning in the vehicle interior, and determines the minimum value of the first to third electric compressor rotation speed upper limit value candidates as the electric compressor rotation speed upper limit value. <P>COPYRIGHT: (C)2012,JPO&INPIT |
