Patent ID: 6830016
Filing Date: 2004-12-14
Classification: F01P,F02B,F02F

Abstract:
A cooling system of an engine including a cylinder head and a cylinder block, the cylinder head having a head water-jacket for circulating coolant and the cylinder block having a block water-jacket for circulating coolant, the cooling system comprising:a radiator for cooling the coolant; a high-temperature coolant line for supplying the coolant from the head water-jacket to the radiator; a low-temperature coolant line for supplying the coolant from the radiator to at least one of the head and block water-jackets; a first thermostat disposed at a predetermined position in one of the low-temperature coolant line and the high-temperature coolant line; a branch coolant line for supplying the coolant from the block water-jacket to the high-temperature coolant line; a second thermostat disposed in the branch coolant line; and a hydraulic pump for generating coolant flow in the high-temperature and low-temperature coolant lines, wherein the head and block water-jackets communicate with each other by a primary pathway for transporting the coolant therebetween, and coolant flow is blocked within a cylinder-region, the cylinder region being defined as a region between the primary pathway and the branch coolant line.