Engine heating device

Internal-combustion engines – With heating means

Patent

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F02M 1702

Patent

active

042586771

ABSTRACT:
An apparatus is provided which utilizes the heat of fusion of a storage material to store heat from a vehicle exhaust system for later use in warming the lubricant or cooling fluid of the engine. An elongated canister has a portion of the exhaust system running through it, and that portion is located near the bottom of the canister. Located in the top of the canister is a heat exchanger through which flows engine coolant or lubricant. The remainder of the canister is filled with a heat storage material which may consist of various eutectic salt mixtures or single salts having temperatures of fusion and heats of fusion such that the material is in a liquid state when warmed by the exhaust system and in a solid state at ambient temperatures.

REFERENCES:
patent: 1139081 (1915-05-01), Stone
patent: 1765933 (1930-06-01), Miller
patent: 1837647 (1931-12-01), Bates
patent: 1892571 (1932-12-01), Goodwin
patent: 1922788 (1933-08-01), Wethrall
patent: 2234423 (1941-03-01), Wittmann
patent: 3062510 (1962-11-01), Percival
patent: 3147744 (1964-09-01), Percival
patent: 3236220 (1966-02-01), Holmes
patent: 4164253 (1979-08-01), Skala

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