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US 6,543,243 B2Granted
Hybrid compressor
AssigneeVisteon Global Technologies, Inc.
InventorsRobert John Mohrmann, Brian Robert Kelm, Rance Andrew Stehouwer
Life of this patent
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AssigneeVisteon Global Technologies, Inc.
InventorsRobert John Mohrmann, Brian Robert Kelm, Rance Andrew Stehouwer
Estimating the term…
An air conditioning system includes an engine driven compressor, and an independent electric motor driven compressor in a common housing. A controller adjusts the independent operation of the engine driven compressor and electric motor driven compressor in response to cooling demand input, and operational parameters of the engine and the battery, as well as optionally the electric motor driven compressor output and engine driven compressor output. A method of independently operating an engine driven compressor and electric motor driven compressor is also provided. The air-conditioning system, controller, and method are particularly useful in hybrid vehicles that use smaller displacement internal combustion engines and electric motor drive means.
A vehicle air conditioner compressor system, comprising:
A controller for a vehicle cooling or air conditioning system compressor apparatus, comprising a first input for temperature, and outputs for controlling independent first and second compressors drivable by independent engine and electric motor drive means, wherein said controller outputs, when operatively connected to first and second compressors, can independently adjust the output of the first and second compressors in response to said first input, wherein said controller outputs can provide control signals to simultaneously operate a first and a second compressor, control signals to operate a first compressor while a second compressor is not operated, or control signals to operate a second compressor while a first compressor is not operated.
A method for improving the efficiency of a vehicle air conditioner compressor system, comprising providing an engine driven compressor and an electric motor driven compressor, wherein said engine driven compressor is not the same as said electric motor driven compressor, wherein said method comprises the step of adjusting the output of said engine driven compressor and electric motor driven compressor in response to a cooling demand, wherein, depending on the cooling demand input, said engine driven compressor is operated simultaneously with said electric motor driven compressor, said engine driven compressor is operated while said electric motor driven compressor is not operated, or said electric motor driven compressor is operated while said engine driven compressor is not operated.
Dependencies are inferred from the claim text.