Engine cooling system control apparatus
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United States of America Patent
Stats
-
Oct 9, 1984
Grant Date -
N/A
app pub date -
Jan 11, 1983
filing date -
Jan 19, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cooling system control apparatus includes an electronic control unit to individually control the operation of an engine water pump, a radiator fan motor and an electromagnetic valve for bypassing the cooling water passage to the radiator, on the basis of a cooling water temperature. When the cooling water temperature is below about 85.degree. C., the water pump is stopped to raise the cooling water temperature rapidly, and when the cooling water temperature is above about 85.degree. C., the water pump is operated and the electromagnetic valve is operated to bypass the cooling water passage to the radiator, and when the cooling water temperature is above about 90.degree. C., the fan motor is operated and also the electromagnetic valve is operated to allow the cooling water to pass through the radiator.
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