Crankshaft supporting structure for an internal combustion engin

Details Crankshaft supporting structure for an internal combustion engin Crankshaft supporting structure for an internal combustion engin

1989-11-08

1991-04-23

Okonsky, David A.

Internal-combustion engines

Frame construction

Horizontal cylinder

123198E, 384429, 384432, F02F 700

Patent

active

050092057

ABSTRACT:
A crankshaft supporting device for a multi-cylinder engine including a plurality of bulkheads provided in a cylinder block of the engine to be arranged along an axis of the crankshaft, disposed in a lower part of the cylinder block. A bearing cap member has a plurality of bearing cap portions each coupled with a lower end of one of the bulkheads so as to constitute a bearing portion for supporting the crankshaft in conjunction with the bulkhead, and a pair of beam portions extending along the axis of the crankshaft to interconnect therethrough two adjacent bearing cap portions. A reinforcement member has a side wall portion which is coupled with a skirt portion of the cylinder block, and a plurality of bolt seats are located underneath the beam portion of the bearing cap member. A plurality of ribs interconnect at least one of the bolt seats and at least one of the side wall portions. A plurality of bolts fasten the beam portions with the bolt seats.

REFERENCES:
patent: 4474148 (1984-10-01), Kikuchi
patent: 4656983 (1987-04-01), Anno
patent: 4831978 (1989-05-01), Iguchi et al.
patent: 4856486 (1989-08-01), Mori et al.
patent: 4911117 (1990-03-01), Nishimura et al.
Society of Automotive Engineers No. 770775, 9/77, "Engine Concept and Design", Component Testing and Engine Development.

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