Blow-bye gas return device for internal combustion engines

Details Blow-bye gas return device for internal combustion engines Blow-bye gas return device for internal combustion engines

1988-10-25

1989-09-05

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F02M 2506

Patent

active

048628603

ABSTRACT:
In a blow-bye gas return device of an internal combustion engine having a blow-bye gas return passage for conducting blow-bye gas from the engine into an integrally combined structure of a fuel injection body and a throttle body, the blow-bye gas return passage has a blow-bye gas discharge orifice which opens toward the upstream side of an air intake passage formed within the injection body around a fuel injector. The discharge orifice is located upstream of the injection port of the injector and on the opposite side of an air flow sensor, whereby the blow-bye gas discharge orifice is free from the injection fuel from the injection port and the air flow sensor is free from oil mist discharged from the blow-bye gas discharge orifice. Further, the blow-bye gas discharge orifice is located at a position where the dynamic pressure is low, whereby the flow resistance is low.

REFERENCES:
patent: 3116727 (1964-01-01), Dietrich
patent: 3589347 (1971-06-01), Sawada
patent: 4345573 (1982-08-01), Obata
patent: 4719891 (1988-01-01), Porth et al.

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