Engine cooling apparatus for motorcycles

Details Engine cooling apparatus for motorcycles Engine cooling apparatus for motorcycles

1997-06-10

1999-06-29

Kwon, John

Internal-combustion engines

Cooling

Automatic coolant flow control

123 4112, F01P 702

Patent

active

059153440

ABSTRACT:
To minimize excessive temperature elevation when in a fast idle state for an engine covered with a cowling, and to prevent heat damage to the cowling, for motorcycles. A radiator and an electric radiator fan are positioned ahead of a watercooled engine and are installed inside a cowling C. When a transmission neutral sensor detects when the transmission is in neutral and a engine speed sensor detects a speed at or over a fast idle speed of the engine both output a high-level signal continuously for a specific length of time to a timer. This state is recognized as the fast idle state of the engine, the transistor is switched on, and the electric motor of the radiator fan 17 is actuated.

REFERENCES:
patent: 4557223 (1985-12-01), Gueyen
patent: 4823744 (1989-04-01), Omura
patent: 5133302 (1992-07-01), Yamada et al.
patent: 5307644 (1994-05-01), Cummins et al.
patent: 5359969 (1994-11-01), Dickrell et al.
patent: 5609125 (1997-03-01), Ninomiya

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