Automotive HVAC system and method of operating same...

Details Automotive HVAC system and method of operating same... Automotive HVAC system and method of operating same...

2006-01-24

2006-01-24

Tapolcai, William E. (Department: 3744)

Refrigeration

Processes

Accumulating holdover ice in situ

C062S228200, C062S244000

Reexamination Certificate

active

06988371

ABSTRACT:
The present invention concerns a method for cooling a passenger compartment in a hybrid vehicle that operates an engine intermittently during vehicle operation, the hybrid vehicle having an HVAC system including an HVAC duct, a blower adapted to direct a flow of air through the HVAC duct, and an evaporator located within the HVAC duct. The method includes the steps of operating the blower; operating the compressor; allowing a predetermined amount of ice to form on the evaporator during operation of the compressor; turning off the vehicle engine; ceasing operation of the compressor; measuring an indicator corresponding to a remaining amount of the predetermined amount of ice formed on the evaporator; and re-starting the compressor when a predetermined air temp in air duct is reached.

REFERENCES:
patent: 5005368 (1991-04-01), MacCracken et al.
patent: 6330909 (2001-12-01), Takahashi et al.
patent: 6606877 (2003-08-01), Tomita et al.
patent: 6688120 (2004-02-01), Aoki et al.
patent: 6701731 (2004-03-01), Aikawa et al.
patent: 6708512 (2004-03-01), Kitamura et al.

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