Inlet arrangement for an internal combustion engine

Details Inlet arrangement for an internal combustion engine Inlet arrangement for an internal combustion engine

1998-10-01

1999-12-07

Wolfe, Willis R.

Internal-combustion engines

Means to whirl fluid before, upon, or after entry into...

123336, 123337, F02D 910, F02B 3108

Patent

active

059965495

ABSTRACT:
An inlet arrangement is provided for a multi-cylinder internal combustion engine. Each cylinder has an air inlet passage and a pair of inlet valves. A control flap is disposed within the inlet passage of one of the cylinders, the flap being pivotable about a pivot axle. The axle is disposed transverse to the length of the inlet passage. The flap has an operative position in which swirling of the air occurs and a starting position. The flap has a pair of wings provided on opposite sides of the pivot axle. The control flap has a base profile substantially corresponding to the internal profile of the inlet passage and a base area. One of the wings has a greater base area than the second of the wings. The first wing has a recess adjacent to the outer circumference of the wing. The recess, in the starting position of the control flap, faces away from direction from which the air flows.

REFERENCES:
patent: 5063899 (1991-11-01), Hitomi et al.
patent: 5273014 (1993-12-01), Mitobe et al.
patent: 5640941 (1997-06-01), Hazen et al.
patent: 5718198 (1998-02-01), Adamisin et al.
patent: 5720255 (1998-02-01), Yoshikawa
patent: 5806484 (1998-09-01), Yoneyama et al.

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