Internal combustion engine cooling system

Details Internal combustion engine cooling system Internal combustion engine cooling system

2008-05-13

2008-05-13

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Cooling

System drained and/or heat-storing

C123S041550, C123S041050

Reexamination Certificate

active

07370612

ABSTRACT:
A check valve having a thermostat function is provided between an engine and a thermal storage tank that stores a portion of the coolant circulating in the engine. The check valve restricts the flow of the coolant from the engine to the thermal storage tank, and loosens the restriction when the temperature of the coolant increases. Through such operation of the check valve, the warm coolant is collected in the thermal storage tank and engine preheating may be performed before engine start. Thus, by providing between the engine and the thermal storage tank the check valve that operates in response to the temperature of the coolant, engine preheating can be accomplished with a simple structure and at a low cost, without using a three-way valve and performing an electrical valve switching control.

REFERENCES:
patent: 3498539 (1970-03-01), Winkman et al.
patent: 6032869 (2000-03-01), Ito et al.
patent: 6446586 (2002-09-01), Fukamachi
patent: 2004/0123816 (2004-07-01), Batzill et al.
patent: 2003-184553 (2003-07-01), None
patent: 2004-232567 (2004-08-01), None
patent: 2005-146950 (2005-06-01), None

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