Heat exchange – With timer – programmer – time delay – or condition responsive... – Having heating and cooling capability
Reexamination Certificate
2006-06-20
2006-06-20
Ford, John K. (Department: 3753)
Heat exchange
With timer, programmer, time delay, or condition responsive...
Having heating and cooling capability
C165S010000, C165S236000, C062S059000, C062S244000, C062S406000
Reexamination Certificate
active
07063138
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 includes an HVAC system having an HVAC duct, a blower for directing a flow of air through the HVAC duct, an evaporator located within the HVAC duct, and a heater core. The heater core has a coolant inlet outlet and is located downstream of the evaporator in the HVAC duct. The method includes the steps of cooling a refrigerant; inducing a flow of the cooled refrigerant through the evaporator; blocking a flow of coolant through the coolant inlet and outlet to trap coolant in the heater core; activating the blower to move air through the evaporator and heater core; turning off the vehicle engine; measuring a duct outlet temperature; and starting the engine when the measured duct outlet temperature is above a predetermined temperature.
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Anand Gaurav
Major Gregory A.
Maniam Balaji
Salim Munther M.
Tumas Todd M.
Ford John K.
General Motors Corporation
Hargitt Laura C.
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