Patent ID: 8127723
Filing Date: 2012-03-06
Classification: F01P

Abstract:
1. A cooling circuit of an engine comprising: a water pump provided at a coolant circulation line; an engine provided with a water jacket forming a pathway through which a coolant supplied from the water pump passes, and having a coolant inflow line and a coolant exhaust line connected to the pathway of the water jacket; a radiator connected to the coolant exhaust line of the engine; a thermostat selectively connecting the radiator with the water pump so as to control a coolant flow therebetween; a first cooling line connecting the coolant exhaust line to a heater; a first return line connecting the heater to the water pump through the thermostat; a second cooling line connecting the coolant exhaust line to a throttle body; a third cooling line connecting the throttle body to an oil cooler; and a second return line connecting the oil cooler to the first return line so as to guide a coolant exhausted from the oil cooler to the first return line.