Engine cooling system and heater circuit therefor

Details Engine cooling system and heater circuit therefor Engine cooling system and heater circuit therefor

1993-11-22

1995-05-30

Kamen, Noah P.

Internal-combustion engines

Cooling

Parallel flow

123 4101, 165101, F01P 300

Patent

active

054192870

ABSTRACT:
A heating system for a vehicle having an internal combustion engine comprising a cylinder head defining an upper coolant chamber and a cylinder block defining a lower coolant chamber. A heater has an inlet in fluid flow communication with the lower coolant chamber of the engine and an outlet connected to a high point of the lower coolant chamber of the engine. A pump has a low pressure side connected to the lower coolant chamber of the engine and a high pressure side connected to a radiator and to the heater. A nonvariable in-line flow restrictor is disposed between the high pressure side of the pump and the heater for limiting coolant pressure on said heater at all flow rates of said pump.

REFERENCES:
patent: 5031579 (1991-07-01), Evans

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