Air intake device for an internal combustion engine

Details Air intake device for an internal combustion engine Air intake device for an internal combustion engine

1998-06-08

2000-01-25

McMahon, Marguerite

Internal-combustion engines

Intake manifold

Passage to crankcase

12318455, F02B 2702

Patent

active

060167807

ABSTRACT:
An air intake device includes a collector connected through suction pipes to cylinders of an internal combustion engine. An intermediate collector is formed by an auxiliary body and by portions of the suction pipes. The portions of the suction pipes are led in pairs, in parallel and close to one another, through the intermediate collector. Two adjacent suction pipes are each assigned a wing flap which has three wings and is disposed in the intermediate collector. In an end position, each wing flap opens a main orifice through which the suction pipes communicate with the auxiliary body and a secondary orifice through which two adjacent suction pipes communicate directly. In a closing position, the wing flap closes the orifices. Two different effective suction pipe lengths are thereby obtained in the two positions of the wing flap.

REFERENCES:
patent: 4765285 (1988-08-01), Kobayashi
patent: 5007386 (1991-04-01), Washizu et al.
patent: 5092284 (1992-03-01), Yamada
patent: 5105774 (1992-04-01), Piccini
patent: 5129368 (1992-07-01), Kristl et al.
patent: 5490484 (1996-02-01), Rutschmann

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