Patent ID: 8430071
Filing Date: 2013-04-30
Classification: F01P

Abstract:
1. An engine cooling system for a vehicle having an internal combustion engine comprising: a main coolant pump having an inlet and an outlet configured to pump a coolant into the internal combustion engine; a torque transfer assembly driven by the engine and operatively engaging the main coolant pump to transfer torque from the internal combustion engine to the main coolant pump; a clutch connected between the main coolant pump and the torque transfer assembly and operable to selectively disengage the main coolant pump from the torque transfer assembly; a thermostat having a thermostat outlet connected to the inlet of the main coolant pump, a first inlet and a second inlet, the thermostat operable to selectively prevent coolant flow from the first inlet to the thermostat outlet; a radiator configured to receive the coolant from the internal combustion engine and direct the coolant to the first inlet; a heater core located in a HVAC module; and an electrically driven auxiliary coolant pump configured such that the coolant flowing through the auxiliary coolant pump and the heater core is directed into the second inlet of the thermostat.