The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 04, 2002

Filed:

Feb. 22, 2001
Applicant:
Inventors:

Takashi Ohyama, Saitama, JP;

Shinji Kuga, Saitama, JP;

Ryuji Tsuchiya, Saitama, JP;

Tetsuaki Maeda, Saitama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 7/506 ;
U.S. Cl.
CPC ...
F02B 7/506 ;
Abstract

To provide a balancer-fitting configuration for an internal combustion engine. With the balancer-fitting configuration of the present invention, the vibration control of an internal combustion engine with forward-inclined cylinders is achieved effectively by using paired balancers separated and disposed opposite to each other. Furthermore, the part of the crankcase behind the crankshaft is decreased in size in the longitudinal direction of the frame, and thereby, a space within which the rear wheel swings is obtained without enlarging the frame. A balancer-fitting configuration of an internal combustion engine with a crankcase, a crankshaft, and a crank weight for a vehicle with a rear wheel disposed close to the rear of the crankcase, wherein the cylinder axial line of the internal combustion engine is inclined generally horizontally, and paired balancers, one above and the other below the crankshaft, are disposed generally within the maximum width of the locus of the crank weight in the longitudinal direction of the vehicle. Furthermore, a starter is disposed in the vicinity of the upper balancer, and accessories such as an oil pump are disposed in the vicinity of the lower balancer.


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