Internal-combustion engines – Cooling – Interrelated coolant flow and throttle control
Patent
1997-01-29
1998-04-14
Kamen, Noah P.
Internal-combustion engines
Cooling
Interrelated coolant flow and throttle control
123 4113, F01P 714
Patent
active
057380481
ABSTRACT:
According to the present invention, the cooling apparatus is equipped with a thermostat for opening or closing a water passage between a radiator and a water-cooled engine and a cooling water passage switching valve for switching a water introducing passage for introducing the cooling water around a thermosensitive member of the thermostat. When the engine is in a high-load operating condition and when the temperature of the cooling water is equal to or higher than a predetermined temperature, the cooling water immediately after having flowed out of the water-cooled engine flows into around the thermosensitive member of the thermostat by the operation of the cooling water passage switching valve. As a result, the thermostat is operated in response to the temperature of the high temperature cooling water having flowed out of the water-cooled engine, and the set temperature of the cooling water by the thermostat can be shifted to a lower temperature. In this way, it is possible to prevent preferably an excessive rise in the temperature of the cooling water not only when the engine is in a high-load operating condition but also when the engine is in a state of hot soak such as in idling after the vehicle has travelled on an upward slope with a low speed.
Fukunaga Hiroyuki
Inoue Yoshimitsu
Suzuki Kazutaka
Yamanaka Yasutoshi
Denso Corporation
Kamen Noah P.
Nippon Soken Inc.
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