Engine cooling system

Details Engine cooling system Engine cooling system

2005-01-04

2005-01-04

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Cooling

Automatic coolant flow control

C123S041090

Reexamination Certificate

active

06837192

ABSTRACT:
An engine cooling system includes a flow control valve and an electronic control unit (ECU) for controlling the flow control valve. The flow control valve regulates the flow rate of coolant flowing through a radiator in a coolant circuit. The ECU feedback controls the opening size of the flow control valve such that the temperature of coolant at an engine outlet seeks a predetermined target value. During the feedback control, the ECU controls the flow control valve such that the opening size of the flow control valve remains above a predetermined lowest value. As a result, the flow control valve is prevented from falling in a small opening size range in which in which it is difficult to cause the engine outlet coolant temperature to seek the target value, and the engine outlet coolant temperature is favorably adjusted.

REFERENCES:
patent: 5390632 (1995-02-01), Ikebe et al.
patent: 6390031 (2002-05-01), Suzuki et al.
patent: A 08-151922 (1996-06-01), None
patent: A 10-317965 (1998-12-01), None
patent: A 2000-345842 (2000-12-01), None

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