Bearing structure of crankshaft in internal combustion engine

Details Bearing structure of crankshaft in internal combustion engine Bearing structure of crankshaft in internal combustion engine

2006-05-30

2006-05-30

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Frame construction

Horizontal cylinder

C384S432000

Reexamination Certificate

active

07051696

ABSTRACT:
A bearing structure of a crankshaft in an internal combustion engine supports a crankshaft on a crankcase with rolling bearings includes a play absorbing device for absorbing the play in the radial direction generated between an outer race of the rolling bearing and a bearing hole of the crankcase. The play absorbing device includes a push plug which pushes an outer race of the ball bearing in the direction perpendicular to an axis of the crankshaft. The push plug is arranged in parallel to the crankshaft between the cylinder and the crankshaft. The outer race of the ball bearing is resiliently biased toward a side of the bearing hole of the crankcase which receives an explosion pressure. As a result, the generation of a hitting sound which is attributed to the above-mentioned “play” can be largely reduced even with respect to an internal combustion engine with a high explosion pressure.

REFERENCES:
patent: 5609422 (1997-03-01), Mueller et al.
patent: 2003-83080 (2003-03-01), None
patent: 2004116705 (2004-04-01), None

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