Motorcycle

Details Motorcycle Motorcycle

1999-02-12

2000-11-07

Yuen, Henry C.

Internal-combustion engines

Charge forming device

Fuel injection system

447109, F02M 5100, B60K 4104

Patent

active

061421235

ABSTRACT:
The present invention is directed towards a motorcycle or off-road use with an improved engine, air inlet, exhaust and engine control management. The engine is an improved four-stroke engine with a monocoque cylinder and crank case. The air inlet has been moved to the head tube of the motorcycle frame. The engine is reverse flow with the exhaust coming out the rear side and being shortened to less than about 50 inches. The engine control management has been modified to include an ignition interrupt, gear based ignition timing and after market tuning capabilities.

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Dynojet Internet advertisement (http:powercommander.com/default.htm) printed Oct. 18, 1999.
Cycle News, Riding Impression 2001 BMW F650GS, Apr. 26, 2000. p. 20.

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