Blow-by gas reducing device

Details Blow-by gas reducing device Blow-by gas reducing device

2011-07-19

2011-07-19

McMahon, M. (Department: 3783)

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

C123S1960CP

Reexamination Certificate

active

07980234

ABSTRACT:
The present invention provides a blow-by gas reducing device capable of adopting an exhaust pump with a small discharge rate and capable of suppressing oil degradation by reducing the mixing of bubbles in oil. The device includes: an oil pan of an engine; an oil tank; a first communication passage (an oil passage) connecting the oil tank and an oil holding portion of the oil pan; an oil pump (an exhaust pump) being provided in the first communication passage and pressure-feeding oil in the oil holding portion to the oil tank; a second communication passage (a gas passage) connecting the oil tank and a blow-by gas residing portion of the engine; and a gas sending device (a gas mechanism) utilizing a flow force of the oil inside the first communication passage to send blow-by gas in the blow-by gas residing portion to the oil tank via the second communication passage.

REFERENCES:
patent: 6148807 (2000-11-01), Hazen
patent: 6877494 (2005-04-01), White et al.
patent: 7051721 (2006-05-01), Tomita et al.
patent: 7165541 (2007-01-01), Hommes
patent: 8-240113 (1996-09-01), None
English language Abstract and machine translation of JP 8-240113 A.

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