Engine cooling system
First Claim
1. An engine cooling system which cools an engine by circulating cooling water in a circulation passage and controls a cooling degree of the engine according to an operating condition of the engine, the system including:
- a flow rate regulating valve for regulating a circulation flow rate of the cooling water;
stop determining means for determining whether the engine is stopped; and
after-engine-stop control means for controlling the flow rate regulating valve to open at a predetermined opening whenever the engine is determined as being stopped by the stop determining means.
1 Assignment
0 Petitions
Accused Products
Abstract
An engine cooling system controls a cooling degree of an engine 1 according to an operating condition thereof by circulating cooling water through the engine. This system is provided with a flow rate regulating valve 8 for regulating a circulation flow rate of the cooling water. An electronic control unit (ECU) 30 controls the valve 8 to open at a predetermined opening when determining the engine 1 as being stopped. In this opening control, the ECU 30 controls to bring a valve element into contact with a valve body once and then move the valve element to determine the predetermined opening with reference to a full-closed position of the valve element.
15 Citations
20 Claims
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1. An engine cooling system which cools an engine by circulating cooling water in a circulation passage and controls a cooling degree of the engine according to an operating condition of the engine, the system including:
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a flow rate regulating valve for regulating a circulation flow rate of the cooling water;
stop determining means for determining whether the engine is stopped; and
after-engine-stop control means for controlling the flow rate regulating valve to open at a predetermined opening whenever the engine is determined as being stopped by the stop determining means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification