System for after-run heating of a vehicle interior

Details System for after-run heating of a vehicle interior System for after-run heating of a vehicle interior

1999-06-18

2000-09-12

Joyce, Harold

Heating systems

Automatic control

Heat source is a reverse cycle refrigerating system or heat...

237 123B, G05D 2300

Patent

active

061165131

ABSTRACT:
A system for continuing heating of a vehicle interior after the engine which normally controls the heating of the vehicle has been turned off. The system comprises a first control circuit located in the engine compartment of the vehicle which continues to pump heated engine coolant through the heater core of the vehicle after the engine has been turned off. A second control circuit located in the passenger compartment of the vehicle continues to operate the heater fan which blows air through the heater core and into the passenger compartment after the engine has been turned off. Thermostats in each circuit are operative to disconnect the battery when the coolant temperature is no longer effective to heat the passenger compartment. The first and second control circuits have no mechanical, electrical or electromagnetic interconnection therebetween.

REFERENCES:
patent: 3269653 (1966-08-01), Howard
patent: 4308994 (1982-01-01), Perhats
patent: 5067652 (1991-11-01), Enander
patent: 5294050 (1994-03-01), Hoffman et al.

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