Vehicle air conditioning and heating method providing engine on and engine off operation
First Claim
1. A vehicle air conditioning system operable to provide engine on and engine off, no-idle operation to provide air conditioning to the sleeping area of the vehicle, the vehicle including an electric power generation and storage system including an alternator and at least one battery, comprising:
- a variable-speed compressor;
a DC motor operably coupled to the variable-speed compressor;
a controller operably coupled to the motor, the controller receiving electric power from the at least one battery when the engine is off to enable operation of the compressor during an engine off condition; and
wherein the controller disables operation of the compressor when the voltage of the battery drops below a predetermined set point.
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Accused Products
Abstract
An air conditioning system for use in an over-the-road or off road vehicle is provided that provides operation during both engine on and engine off conditions. The system includes a variable speed compressor, a motor, and a controller. The controller receives electric power from the vehicle'"'"'s electric power generation system when the engine is on to enable operation of the compressor during an engine on condition. When the engine is off, the controller receives electric power from a battery to enable operation of the compressor during the engine off condition. This allows no-idle operation of the air conditioning system.
132 Citations
20 Claims
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1. A vehicle air conditioning system operable to provide engine on and engine off, no-idle operation to provide air conditioning to the sleeping area of the vehicle, the vehicle including an electric power generation and storage system including an alternator and at least one battery, comprising:
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a variable-speed compressor;
a DC motor operably coupled to the variable-speed compressor;
a controller operably coupled to the motor, the controller receiving electric power from the at least one battery when the engine is off to enable operation of the compressor during an engine off condition; and
wherein the controller disables operation of the compressor when the voltage of the battery drops below a predetermined set point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of operating an air conditioning system for a vehicle to provide air conditioning to the sleeping area of the vehicle having an electric power generation and storage system, comprising the steps of:
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drawing electric power from the electric power generation and storage system when the engine is operating to drive an electrically driven, variable-speed compressor to cool the vehicle;
drawing electric power from the electric power generation and storage system when the engine is not operating to drive the electrically driven, variable-speed compressor to cool the vehicle; and
disabling operation of the electrically driven, variable-speed compressor when an output of the electric power generation and storage system drops below a threshold. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification