Cylinder block of internal combustion engine

Details Cylinder block of internal combustion engine Cylinder block of internal combustion engine

1997-10-08

1999-08-03

McMahon, Marguerite

Internal-combustion engines

Frame construction

Horizontal cylinder

F02F 700

Patent

active

059311355

ABSTRACT:
In a cylinder block of an internal combustion engine, crank caps are bolted and a crankshaft is rotatably supported by the crank caps. The cylinder block includes bulkheads which divide an internal space of a crankcase into sub-sections for respective cylinders of the engine. Breathing holes are formed in each of the bulkheads and allow the sub-sections of the crankcase to communicate with each other via the breathing holes. Crank cap holes are formed in a bottom of each of the bulkheads. Bolts are fastened to the crank cap holes to fix the crank caps to the bulkheads. The crank cap holes are threaded holes which extend from the bottom of each of the bulkheads and are open to the breathing holes.

REFERENCES:
patent: 4753201 (1988-06-01), Fukuo et al.
patent: 5222467 (1993-06-01), Sasada
patent: 5711614 (1998-01-01), Wuest et al.

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