Combined bypass and thermostat assembly

Details Combined bypass and thermostat assembly Combined bypass and thermostat assembly

1997-02-10

1998-08-04

Okonsky, David A.

Internal-combustion engines

Cooling

Automatic coolant flow control

123 4109, F01P 714

Patent

active

057878455

ABSTRACT:
To ensure an adequate supply of hot engine coolant to a heater circuit at low engine speeds, a combined thermostat and bypass valve 10 is arranged to restrict bypass flow by means of a spring-loaded bypass valve 38 operating at a bypass delivery port 16. At low engine speeds the bypass flow pressure is insufficient to lift the bypass valve 38 from its seating and the flow through a heat exchanger "H" in the heater circuit is thereby enhanced.

REFERENCES:
patent: 4055298 (1977-10-01), Wilson
patent: 4288031 (1981-09-01), Hass
patent: 4425877 (1984-01-01), Fritzenwenger et al.
patent: 4621594 (1986-11-01), Kubis
patent: 4679530 (1987-07-01), Kuze
patent: 5183012 (1993-02-01), Saur et al.
patent: 5642691 (1997-07-01), Schroeder

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