Engine cooling structure

Details Engine cooling structure Engine cooling structure

1986-10-08

1988-05-03

Ostrager, Allen M.

Internal-combustion engines

Cooling

With jacketed head and/or cylinder

123 4144, 123 4174, F02F 114, F01P 510

Patent

active

047412933

ABSTRACT:
In an engine cooling structure in which a water pump for causing a cooling water or coolant to flow in a watercool engine is located at or near one end portion of a cylinder block in the direction of the cylinder alignment, coolant passages include a main coolant passage disposed in a cylinder head and the cylinder block, a radiator circulating passage leading the cooling water from the water pump through an engine body to a radiator core, a by-pass passage by-passing the radiator core, and a heater circulating passage leading the cooling water from the engine body to an air-conditioning heater. The radiator circulating passage and the by-pass passage are arranged so as to switch by a thermostat valve. The by-pass passage and/or the heater circulating passage are or is constructed so as to have a coolant return passage disposed in the cylinder block extending in the direction of the cylinder alignment.

REFERENCES:
patent: 1791572 (1931-02-01), Ornberg
patent: 4413596 (1983-11-01), Hirayama

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