Vehicle air conditioning and heating system providing engine on and engine off operation
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United States of America Patent
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Jun 4, 2013
Grant Date -
Dec 10, 2009
app pub date -
Aug 14, 2009
filing date -
Apr 29, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
An air conditioning system for use in an over-the-road or off road vehicle is provided that provides a method of operation during both engine on and engine off conditions. The method operates the air conditioning system at one capacity when the engine is running, and at a second capacity when the engine is not running. The selection of these capacities is based on the power capacity of the source of electric power from which the air conditioning system is operated. When a storage battery is used to power the air conditioning system during engine off conditions, the second capacity is lower than the capacity at which the system is operated when the engine is running.
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