Internal-combustion engines – Cooling – Interrelated coolant flow and throttle control
Patent
1989-04-04
1990-10-23
Kamen, Noah P.
Internal-combustion engines
Cooling
Interrelated coolant flow and throttle control
123 4113, F01P 714
Patent
active
049643711
ABSTRACT:
A cooling system for an internal combustion engine has a water jacket connected to a radiator with upper and lower radiator passages for cooling coolant leaving the engine and a water pump in the lower radiator passage for circulating coolant through the water jacket. A bypass passage connects the upper radiator passage to the lower radiator passage for the circulation of coolant through the water jacket bypassing the radiator. A first thermostat valve in the upper radiator passage closes the upper radiator passage and opens the bypass passage when the coolant is lower than a predetermined low temperature and the engine is operated in a low engine load range so as to permit the circulation of coolant through the bypass passage bypassing the bypass passage. A second thermostat valve in the upper radiator passage opens the upper radiator passage and closes the bypass passage when the coolant is higher than a predetermined high temperature and the engine is operated with a rapid change of engine load so as to interrupt the circulation of coolant bypassing the bypass passage.
REFERENCES:
patent: 1306000 (1919-06-01), Fulton et al.
patent: 2075521 (1937-03-01), Hild
patent: 2622572 (1952-12-01), Nallinger
patent: 3805748 (1974-04-01), Garcea et al.
patent: 4011988 (1977-03-01), Inagaki
patent: 4337733 (1982-07-01), Hirata et al.
Maeda Toshimasa
Sato Hidenobu
Kamen Noah P.
Mazda Motor Corporation
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