Vehicle air conditioning and heating system providing engine on and engine off operation
AssigneeBergstrom, Inc.
InventorsTerry Zeigler, Eric Elias
Life of this patent
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Abstract
An air conditioning system for use in an over-the-road or off road vehicle is provided that allows operation during both engine on and engine off conditions. The system utilizes a variable speed, motor driven compressor controlled by an intelligent power generation management controller. This controller selects from one of the available sources of power on the vehicle to drive the compressor, and modulates the compressor speed and capacity based on operational parameters and source availability and depletion. The controller may also operate a coolant or air heater to provide heating to the interior compartments.
Claims6
A heating, ventilation, and air conditioning (HVAC) system for a vehicle having an engine, comprising:
- a first coolant loop including a motor-driven compressor;
- a second coolant loop in thermal communication with the first coolant loop, the second coolant loop including a heat exchanger positioned in thermal communication with an interior compartment of the vehicle;
- and
- an intelligent power generation management controller operably coupled to the motor-driven compressor, the controller receiving electric power from at least one source of electric power operable regardless of an operating condition of the vehicle's engine;
- and
- wherein the controller modulates a speed of the motor-driven compressor based on a power capacity of the at least one source of electric power when interior cooling is required.
Dependencies are inferred from the claim text.