Bearing case for engine
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorsAkira Furuya, Takao Sakai
Life of this patent
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Abstract
A main bearing case has a bearing holder for holding a bearing so as to support a crankshaft, and a crankcase mounting section at which it is joined to a crankcase. Rib walls are provided so as to surround the bearing holder between the bearing holder and the crankcase mounting section. The rib walls are formed in a side of the crankcase, and in a neighborhood of each inner side face of the bearing holder and the crankcase mounting section. These rib walls receive a force exerted in a radial direction from the crankshaft. Thereby, an improvement of rigidity of the main bearing case can be achieved, and also the lubrication to a valve-operating system can be always ensured by preventing an oil surface from lowering even when an engine is located with inclination.
Claims9
A bearing case attached to a crankcase of an engine in order to hold a bearing for supporting a crankshaft of said engine, comprising:
- a bearing holder for holding said bearing;
- a crankcase mounting section formed on an outer peripheral surface of said bearing case to be joined to said crankcase;
- and
- rib walls formed so as to surround said bearing holder and extend from said bearing holder to said crankcase mounting section, said rib walls being located adjacently to a side end surface of said crankcase.
A bearing case attached to a crankcase of an engine in order to hold a bearing for supporting a crankshaft of said engine, comprising:
- a bearing holder for holding said bearing;
- a crankcase mounting section formed on an outer peripheral surface of said bearing case to be joined to said crankcase;
- and
- rib walls formed so as to surround said bearing holder and extend from said bearing holder to said crankcase mounting section.
A bearing case attached to a crankcase of an engine in order to hold a bearing for supporting a crankshaft of said engine, comprising:
- a bearing holder for holding said bearing;
- a crankcase mounting section formed on an outer peripheral surface of said bearing case to be joined to said crankcase;
- and
- rib walls located adjacently to a side end surface of said crankcase.
Dependencies are inferred from the claim text.