Multicylinder internal combustion engine

Details Multicylinder internal combustion engine Multicylinder internal combustion engine

2006-09-05

2006-09-05

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Frame construction

Horizontal cylinder

C123S1960CP

Reexamination Certificate

active

07100562

ABSTRACT:
A V-type, multicylinder internal combustion engine with multiple isolated crank chambers formed by partitioning a space inside of a crankcase with multiple support walls for supporting a crankshaft, and multiple oil outlet holes, respectively communicating with the isolated crank chambers to separately discharge oil from the multiple isolated crank chambers, uses a single scavenging pump to discharge the oil from the isolated crank chambers rather than connecting multiple scavenging pumps, respectively, to the oil outlet holes. The engine includes an oil collecting pan mounted on a bottom wall of a crank chamber covering the multiple oil outlet holes respectively communicating with the multiple isolated crank chambers for collecting the oil passed through the oil outlet holes. The oil collecting pan has an oil reservoir with an oil outlet opening, and a single scavenging pump for drawing the oil stored in the oil collecting pan through the oil outlet opening.

REFERENCES:
patent: 5901680 (1999-05-01), Ozeki
patent: 2003/0140888 (2003-07-01), Tanaka et al.
patent: 38 05 389 (1989-08-01), None
patent: 100 43 795 (2002-03-01), None
patent: 1 394 383 (2004-03-01), None
patent: 2002-276317 (2002-09-01), None

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