Oil passage structure for engine

Details Oil passage structure for engine Oil passage structure for engine

2005-03-29

2005-03-29

Moulis, Thomas (Department: 3747)

Internal-combustion engines

Lubricators

Crankcase, pressure control

C184S006500

Reexamination Certificate

active

06871627

ABSTRACT:
To provide a lubricating device for an engine in which a generator is housed in a generator chamber formed between a crankcase and a generator cover connected to the crankcase. A block side return oil passage is in communication with a head side return oil passage provided in a cylinder head and is provided in a cylinder block in such a manner as to be in communication with the generator chamber in order to return oil from the cylinder head to the oil pan through the generator chamber. The device is intended to prevent a raise in oil temperature and an increase in friction loss by adjusting the amount of oil flowing into the generator chamber to an optimum value. A branch oil passage is in communication with an intermediate portion of a block side return oil passage and is provided in a cylinder block. The branch oil passage is formed so as to allow part of the oil flowing in the block side return oil passage to bypass the generator chamber and to flow to the oil pan.

REFERENCES:
patent: 6598705 (2003-07-01), Ito et al.
patent: 6799485 (2004-10-01), Kawamoto et al.
patent: 20040069266 (2004-04-01), Fujikubo
patent: 11-193723 (1999-07-01), None

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