Helically-shaped intake port of an internal-combustion engine

Details Helically-shaped intake port of an internal-combustion engine Helically-shaped intake port of an internal-combustion engine

1983-05-11

1984-12-04

Lazarus, Ira S.

Internal-combustion engines

Valve

Valve head cooperates with manifold

123308, F02F 142

Patent

active

044857748

ABSTRACT:
An engine comprising an intake port which has a separating wall projecting downwardly from the upper wall of the intake port. The separating wall defines a helical portion, an inlet passage portion tangentially connected to the helical portion, and a bypass passage interconnecting the inlet passage portion and the helical portion. A rotary valve is arranged in the inlet portion of the bypass passage so that the axis of the rotary valve is substantially parallel to the axis of the stem of the intake valve. The rotary valve is actuated by a vacuum-operated diaphragm apparatus and is opened when the amount of air fed into the cylinder of the engine is increased beyond a predetermined value.

REFERENCES:
patent: 3850479 (1974-11-01), Boyhont et al.
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patent: 4159011 (1979-06-01), Sperry
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patent: 4256062 (1981-03-01), Schafer
patent: 4257384 (1981-03-01), Matsumoto
patent: 4286554 (1981-09-01), Okamoto
patent: 4312309 (1982-01-01), Nakanishi et al.
patent: 4411226 (1983-10-01), Okumura et al.
patent: 4438741 (1984-03-01), Okumura et al.

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