Cooling system for spark-ignition two-cycle engine

Details Cooling system for spark-ignition two-cycle engine Cooling system for spark-ignition two-cycle engine

1996-11-13

1997-12-30

Kamen, Noah P.

Internal-combustion engines

Cooling

Interrelated coolant flow and throttle control

123 4129, F01P 320

Patent

active

057018510

ABSTRACT:
In a spark-ignition two-cycle engine, the inlet end of a cylinder cooling water passage is connected to the discharge port of a cooling water pump by a cooling water pipe. The inlet end of a cylinder head cooling water passage is connected to the discharge port of a cooling water pump by a cooling water pipe. The outlet end of the cylinder cooling water passage is connected through a thermostat to the upper end of a cylinder cooling radiator, and the outlet end of the cylinder head cooling water passage is connected through a three-way valve to the upper end of a cylinder head cooling radiator and a pipe fitting. Upon the increase of the temperature of the cooling water for cooling the cylinder head to a predetermined temperature, a CPU provides a control signal to a servomotor to close a port of the three-way valve connected to the pipe fitting and to open a port of the three-way valve connected to the cylinder head cooling radiator.

REFERENCES:
patent: 1774881 (1930-09-01), Fry
patent: 2216802 (1940-10-01), Baster
patent: 2445684 (1948-07-01), Mallory
patent: 3444845 (1969-05-01), Scheiterlein
patent: 4212270 (1980-07-01), Nakanishi et al.
patent: 4726324 (1988-02-01), Itakura
patent: 4726325 (1988-02-01), Itakura
patent: 5337704 (1994-08-01), Roth

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