Blow-by gas treatment for engine

Details Blow-by gas treatment for engine Blow-by gas treatment for engine

1998-07-20

1999-10-19

Kamen, Noah P.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F02B 4710, F02M 3524, F01M 1300, F01M 1304

Patent

active

059671270

ABSTRACT:
To improve the low-temperature resistance of a blow-by gas treatment device. An air cleaner is connected through a carburetor to the intake side of a cylinder portion constituting an engine in a four-wheel buggy. A blow-by gas induction pipe is provided to connect a crankcase and one side surface of the air cleaner, so as to induce a blow-by gas from the crankcase to a return chamber defined in the air cleaner at one side portion thereof. An exhaust pipe extends rearwardly from the exhaust side of the cylinder portion along a part of the induction pipe, and is connected to a muffler. The muffler is located in the vicinity of the return chamber in the air cleaner, so as to warm the return chamber by the heat radiated from the muffler, thereby ensuring good returnability of the blow-by gas even at low temperatures. The exhaust pipe similarly warms the induction pipe.

REFERENCES:
patent: 3705497 (1972-12-01), Hollins
patent: 3769798 (1973-11-01), Whittaker
patent: 4133547 (1979-01-01), Fox
patent: 4282713 (1981-08-01), Antoku et al.
patent: 4503931 (1985-03-01), Sugimoto et al.
patent: 4611679 (1986-09-01), Yanagishita et al.

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