Arrangements for supporting crankshafts in multicylinder engines

Details Arrangements for supporting crankshafts in multicylinder engines Arrangements for supporting crankshafts in multicylinder engines

1988-07-13

1990-03-27

Kamen, Noah P.

Internal-combustion engines

Frame construction

Horizontal cylinder

123195H, F02F 700

Patent

active

049111175

ABSTRACT:
An arrangement for supporting a crankshaft in a multicylinder engien comprises a plurality of bulkheads provided in a cylinder block of the engine to be arranged at predetermined intervals along an axis of the crankshaft disposed in the cylinder block, a plurality of bearing caps each coupled with a lower end of one of the bulkheads by a cap bolt screwed into the bulkhead through a part of the bearing cap relatively close to the bulkhead so as to constitute a bearing portion for supporting the crankshaft in conjunction with the bulkhead, a beam structure extending along the axis of the crankshaft to interconnect therethrough adjacent two of the bearing caps, and a reinforcing structure coupled with the beam structure with a plurality of clamped spots generally arranged in the direction along which the crankshaft extends and also coupled with each of side skirt portions of the cylinder block with a plurality of clamped spots generally arranged in the direction along which the crankshaft extends.

REFERENCES:
patent: 3046954 (1962-07-01), Hoffman
patent: 3841203 (1974-10-01), Bruce
patent: 4445472 (1984-05-01), Ogawa et al.
patent: 4656983 (1987-04-01), Anno
patent: 4721077 (1988-01-01), Fukuo et al.

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