Engine cooling system control apparatus

Details Engine cooling system control apparatus Engine cooling system control apparatus

1983-01-11

1984-10-09

Cuchlinski, Jr., William A.

Internal-combustion engines

Cooling

Automatic coolant flow control

123 411, 123 4112, 123 4144, F01P 512, F01P 716

Patent

active

044754850

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.

REFERENCES:
patent: 4348990 (1982-09-01), Nolte et al.
patent: 4381736 (1983-05-01), Hirayama
Abstract of Japanese Patent 57-140511 (8/31/82).

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