Patent ID: 6684826
Filing Date: 2004-02-03
Classification: F01P,F02D

Abstract:
An engine cooling apparatus, comprising:a circulation passage extending through an engine, wherein coolant flows through the circulation passage; a radiator provided in the circulation passage, wherein the radiator cools coolant passing through the circulation passage; a flow regulating valve, which regulates the flow rate of coolant flowing through the radiator; and a controller for controlling the flow regulating valve, wherein the controller sets a feedforward term, which corresponds to a basic opening of the flow regulating valve, based on the operation state of the engine, wherein the controller sets a feedback term, the feedback term being adjusted such that the engine coolant temperature, which is the temperature of coolant flowing through the engine, converges on a predetermined target value, and wherein the controller feedback controls the opening of the flow regulating valve based on the feedforward term and the feedback term.