F - Mech Eng,Light,Heat,Weapons – 01 – P
Patent
F - Mech Eng,Light,Heat,Weapons
01
P
F01P 3/20 (2006.01) F01P 7/16 (2006.01) F01P 5/12 (2006.01)
Patent
CA 2130875
Abstract of the Disclosure An improved cooling system for an internal combustion engine in an automotive vehicle which utilizes recirculating liquid coolant and provides an initial engine warm-up flow circuit extending: from a coolant pump, through cooling passages in the cylinder head, through a heat exchanger used to warm a passenger compartment, and back to the pump whereby a temperature responsive flow control valve or thermostat prohibits a flow of coolant from the cylinder head to cooling passages in the engine block which provides adequate cooling of the upper surfaces of the combustion chamber which are formed by the cylinder head while promoting a relatively rapid heating of the surfaces of the engine cylinders formed by the block. After the warm-up period, the thermostat opens to permit coolant flow into a down-flow passage between the cylinder head coolant passages and the engine block coolant passages resulting in a normal engine cooling circuit extending: from the coolant pump, through the cylinder head cooling passages, then through the engine block cooling passages, through a vehicle radiator, and back to the coolant pump. The improved cooling system actively cools the upper surfaces of the combustion chamber formed by the cylinder head both during an engine warm-up period and during normal engine operation which promotes complete combustion of the fuel and inhibits knock and pre-ignition. Also, since coolant warmed in the cylinder head coolant passages is directed to the passenger compartment heater, the heater more quickly provides heated air for the passenger compartment and for window defrosting. After the warm-up mode, the temperature of the engine is regulated by exchange of excess engine heat to ambient by the vehicle radiator.
Chrysler Corporation
Marks & Clerk
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