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

1979-09-05

1982-01-05

Lazarus, Ira S.

Internal-combustion engines

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

123188M, F02B 3100

Patent

active

043088325

ABSTRACT:
A helically-shaped intake port comprising a helical portion and an inlet passage portion which is tangentially connected to the helical portion and extends so as to be slightly curved. The intake valve is arranged at the outlet open end of the helical portion. The side wall of the inlet passage portion, which is located near the axis of the intake valve, has on its upper portion an inclined wall portion which is arranged to be directed downwards. A projection projecting downwards and arranged to enclose the valve stem of the intake valve is formed in one piece on the upper wall of the helical portion. The projection has a maximum thickness at a position near the cross point of the circumferential wall of the projection and the straight line passing through the axis of the intake valve, and extending in parallel with a plane containing the inlet open end of the inlet passage portion. The upper half of the inclined wall portion of the side wall of the inlet passage portion is tangentially connected to the circumferential wall of the projection, which has the maximum thickness.

REFERENCES:
patent: 3008458 (1961-11-01), Eisele et al.
patent: 3273551 (1966-09-01), Julien et al.
patent: 3335707 (1967-08-01), Heinrich
patent: 3933142 (1976-01-01), List et al.
patent: 3945363 (1976-03-01), Elsbett et al.

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