Patent ID: 6955141
Filing Date: 2005-10-18
Classification: F01P

Abstract:
1. A cooling system for a liquid cooled internal combustion engine including a cylinder block having a cooling jacket and a cylinder head mounted on the cylinder block and having a cooling jacket connected with the cooling jacket of the cylinder block for serial coolant flow through the block and the head from a first coolant inlet in the block to a coolant outlet in the head; the improvement comprising: a second coolant inlet connected with the cooling jacket of the cylinder head; a controllable flow water pump connected between the coolant outlet and the coolant inlets to pump coolant at variable flow rates through the system; a heat exchanger connected to discharge excess heat from the coolant leaving the outlet; the heat exchanger connected with the water pump and the water pump connected with the first coolant inlet in the block for circulating liquid coolant through the system; and a diverter valve connected between the pump and the first and second coolant inlets to the block and head respectively, the diverter valve being operable to modulate coolant flow from the pump between a position of full coolant flow to the first coolant inlet to the cylinder block and a position of full coolant flow to the second coolant inlet to the cylinder head.