V-Type multi-cylinder engine for motorcycle

Details V-Type multi-cylinder engine for motorcycle V-Type multi-cylinder engine for motorcycle

1982-12-23

1985-01-29

Peters, Jr., Joseph F.

Motor vehicles

Special wheel base

Having only two wheels

74603, 74604, 123 54R, 123192R, 123192B, B62D 6102, F16F 1526

Patent

active

044960204

ABSTRACT:
Disclosed is an engine for motorcycles, having first and second engine blocks disposed in a form like V on the frame of the motorcycle. Pistons reciprocatably and slidably received in the engine blocks are connected to first and second crank pins of a crankshaft through respective connecting rods. Representing the included angle between the central axes of first and second cylinders for the first and second piston by .alpha., the rotational phase of the second crank pin is offset from that of the first crank pin by an angle .pi.-2.alpha. in the opposite side of the central axis of the first cylinder to the central axis of the second cylinder. A balancer weight is attached to that portion of the crank shaft positioned opposite to the first and second crank pins and on the bisector line of the angle formed between the first and second crank pins. With this arrangement, the primary inertia force as applied to the crankshaft by the mass of reciprocating parts such as pistons can be substantially eliminated to remarkably suppress the vibration of the engine.

REFERENCES:
patent: 754929 (1904-03-01), Lepape
patent: 1639165 (1927-08-01), Burtnett
patent: 2194022 (1940-03-01), Kitzeman
patent: 4194469 (1980-03-01), Kruger
patent: 4321978 (1982-03-01), Tominaga et al.
patent: 4370953 (1983-02-01), Van de Walker

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