Patent ID: 8833314
Filing Date: 2014-09-16
Classification: F01P,G05D,Y10T

Abstract:
1. A cooling system for cooling a combustion engine, the system comprising: a radiator for cooling of coolant which is circulated in the cooling system; a pilot line, which has an inlet to receive a small portion of the coolant flow from an inlet line which leads the coolant to the engine; a thermostat comprising a sensing element configured for monitoring the temperature of the coolant in the pilot line; a valve configured for directing the coolant from a line of the cooling system to the engine either without cooling the coolant in the radiator at times when the sensing element detects that the coolant in the pilot line is at a lower temperature than a regulating temperature, or to directing the coolant from the cooling system line to the radiator for cooling the coolant before the coolant is led to the engine at times when the sensing element detects that the coolant in the pilot line is at a higher temperature than the regulating temperature; a selectively activatable and deactivatable thermal device in contact with the coolant in the pilot line at a location upstream of the sensing element in a direction of coolant flow; and a control unit configured to determine temperature of the coolant in the pilot line and to estimate when to alter the coolant's operating temperature in the cooling system and to selectively activate the thermal device to alter temperature of the coolant in the pilot line travelling to the thermostat that the pilot line receives via an inlet for the coolant flow from the inlet line which leads the coolant to the combustion engine, wherein the control unit is configured to activate, based on the determination of the temperature of the coolant in the pilot line, the thermal device to alter the temperature of the coolant in the pilot line travelling to the thermostat to obtain a temperature different than the regulating temperature.