Flywheel and mounting method for same

Machine element or mechanism – Elements – Flywheel – motion smoothing-type

Reexamination Certificate

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Details

C123S054400, C123S197400

Reexamination Certificate

active

07134361

ABSTRACT:
In order to suppress axial vibration in a crank system, prevent knocking sound, and reduce vibration noise, a flywheel (1) which is mounted onto the crankshaft of an engine (E) is made into a spoked form having an uneven number of spokes (5). This prevents the symmetrical bending that occurs with an even number of spokes, and divides the vibration mode in the peripheral direction. It is preferable that the number of spokes be seven. The flywheel (1) is mounted such that, when the pistons of predetermined cylinders #5and #6are at top dead center at the start of the expansion stroke, one of the spokes (5a) is positioned on the opposing side to these predetermined cylinders, which border the center of the crank (C).

REFERENCES:
patent: 2474370 (1949-06-01), Russell
patent: 4341001 (1982-07-01), Swartout
patent: 4765198 (1988-08-01), Stravrinidis
patent: 4784006 (1988-11-01), Kethley
patent: 5000141 (1991-03-01), Sugano
patent: 5457883 (1995-10-01), Swenson, Sr.
patent: 5481142 (1996-01-01), James et al.
patent: 6166472 (2000-12-01), Pinkerton et al.
patent: 6216327 (2001-04-01), Hendrian
patent: 6547053 (2003-04-01), Shih
patent: 2 114 709 (1983-08-01), None
patent: 8-154357 (1996-06-01), None
patent: 8-154357 (1996-06-01), None
Copy of EPC Search Report for Serial No. EP 02 01 4549 dated Jul. 11, 2003.

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