Ice with single intake valve and dual intake manifold runners

Details Ice with single intake valve and dual intake manifold runners Ice with single intake valve and dual intake manifold runners

1989-04-06

1990-06-05

Dolinar, Andrew M.

Internal-combustion engines

Valve

Valve head cooperates with manifold

123308, F02B 3100

Patent

active

049304682

ABSTRACT:
An ICE with at least one intake port and intake valve has an air inlet passage that is split by a divider wall into primary and secondary runners, the primary being smaller than the secondary. The secondary contains a flow deactivation valve for shutting off or permitting flow to the inlet port opening. The divider wall extends to a point immediately adjacent the intake valve stem so as to positively divide the passage into the two independent runners. The centerline of the primary passage is oriented so as to produce the desired swirl rate to the air flow, other geometric considerations being defined to accurately control the swirl rate of flow and velocity to provide maximum efficiency of operation; one being that the primary passage cross-sectional area be 40%-50% of the total cross-sectional area of the port opening, another being that the volume between the closed deactivation valve and the intake valve being less than 15% of the cylinder displaced volume, and including other sized ratios.

REFERENCES:
patent: 3318292 (1967-05-01), Hideg
patent: 4485775 (1984-12-01), Kanda et al.
patent: 4499868 (1985-02-01), Kanda et al.
patent: 4550699 (1985-11-01), Okumura et al.
patent: 4844040 (1989-07-01), Leighton et al.

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