Engine cooling system and heater circuit therefor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 30, 1995
Issued Date -
N/A
app pub date -
Nov 22, 1993
filing date -
Sep 18, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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