Lubricating structure for an engine

Details Lubricating structure for an engine Lubricating structure for an engine

2006-08-15

2006-08-15

Argenbright, Tony M. (Department: 3747)

Internal-combustion engines

Lubricators

Crankcase, pressure control

C123S1960CP, C123S19800E, C123S19800E

Reexamination Certificate

active

07089905

ABSTRACT:
A lubricating structure for an engine includes a crankcase for supporting a crankshaft formed from a pair of case halves coupled to each other along a mating plane extending along a plane perpendicular to an axial line of the crankshaft. An oil reservoir in a lower portion of the crankcase extends across the mating plane. A pump chamber of an oil pump is formed between the two case halves across the mating plane. Lubricant is drawn from the oil reservoir into the oil pump using a structure which can achieve reduction of the number of parts and improve the ease of assembly. The structure includes a path groove, which forms an oil suction path for interconnecting the oil pump and the oil reservoir, formed in at least one of the two case halves.

REFERENCES:
patent: 6116205 (2000-09-01), Troxler et al.
patent: 6823829 (2004-11-01), Kawamoto et al.
patent: 2002122290 (2002-04-01), None

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