Oil separator for engine, and personal watercraft

Details Oil separator for engine, and personal watercraft Oil separator for engine, and personal watercraft

2005-05-17

2005-05-17

McMahon, Marguerite (Department: 3747)

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

Reexamination Certificate

active

06892716

ABSTRACT:
An oil separator comprises an oil chamber having a first space on an upper side and a second space on a lower side which communicate with each other. An air-fuel mixture transport pipe is connected to a peripheral portion of the oil chamber so as to communicate with the second space. An oil discharge pipe is connected to a lower end portion of the oil chamber. A blow-by gas discharge pipe is connected to an upper end portion of the oil chamber. The second space communicates with the first space so as to inhibit the oil from flowing from the second space into the first space. The first space communicates with the blow-by gas discharge pipe so as to inhibit the oil from flowing from the first space into the blow-by gas discharge pipe. The flow direction at one end portion of the air-fuel mixture transport pipe substantially corresponds with the circumferential direction of the oil chamber.

REFERENCES:
patent: 4269607 (1981-05-01), Walker
patent: 5450835 (1995-09-01), Wagner
patent: 5951344 (1999-09-01), Tsunoda et al.
patent: 6152119 (2000-11-01), Hoshiba et al.
patent: 6190221 (2001-02-01), Nanami
patent: 6408835 (2002-06-01), Katayama et al.
patent: 6591820 (2003-07-01), Kitano et al.
patent: 6626163 (2003-09-01), Busen et al.

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