Motorcycle engine

Details Motorcycle engine Motorcycle engine

1982-01-29

1984-10-02

Feinberg, Craig R.

Internal-combustion engines

Multiple cylinder

123 55VF, 123195A, 180219, 180297, F02B 7522, B62D 2102

Patent

active

044741448

ABSTRACT:
A multi-cylinder internal combustion engine is mounted on the frame body of a motorcycle. The engine has a front cylinder block extending forward and a rear cylinder block extending upward so that a V-shaped space is defined between the cylinder blocks. A downdraft carburetor supplies fuel to the front cylinder block and a lateral-draft carburetor supplies fuel to the rear cylinder block. Both carburetors are positioned in the V-shaped space and their air intake ports are in close proximity but offset laterally. The intake pipes to the carburetors have essentially the same length and geometrical arrangement. First and second exhaust systems for the two cylinder blocks are essentially the same length although the exhaust system for the front cylinder block extends under the engine to one side of the rear wheel of the motorcycle and the other exhaust system for the rear cylinder block extends at a higher elevation to the other side of the wheel.

REFERENCES:
patent: 754929 (1904-03-01), Lepape
patent: 4226296 (1980-10-01), Higaki
Schofield; "Petersen's Basic Carburetion and Fuel Systems"; 1971, pp. 30-39.

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