The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2006
Filed:
May. 25, 2004
Munther M. Salim, Macomb, MI (US);
Gregory A. Major, Farmington Hills, MI (US);
Todd M. Tumas, Taylor, MI (US);
Gaurav Anand, Sterling Hts., MI (US);
Balaji Maniam, Rochester Hills, MI (US);
Munther M. Salim, Macomb, MI (US);
Gregory A. Major, Farmington Hills, MI (US);
Todd M. Tumas, Taylor, MI (US);
Gaurav Anand, Sterling Hts., MI (US);
Balaji Maniam, Rochester Hills, MI (US);
General Motors Corporation, Detroit, MI (US);
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.