Variable runner length intake manifold

Details Variable runner length intake manifold Variable runner length intake manifold

2005-06-07

2005-06-07

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

C123S184530

Reexamination Certificate

active

06901898

ABSTRACT:
The present invention provides a variable runner length intake air manifold operative to optimize the performance of an internal combustion engine over a wide range of engine speeds. The manifold includes a housing formed of upper and lower halves fixedly attached via conventional fastening means. The upper and lower halves define a plurality of runners having constant cross-sectional areas but different cross-sectional shapes. A tapered drum is disposed within the housing and includes one open end and a plurality of openings formed in the outer surface that communicate with corresponding runners of the housing. The tapered drum is rotatably mounted within the housing such that the effective runner length or airflow path of the manifold is made adjustable by varying the angular position of the tapered drum disposed within the housing.

REFERENCES:
patent: 2835235 (1958-05-01), Gassmann
patent: 4619226 (1986-10-01), Ueda et al.
patent: 4646689 (1987-03-01), Katsumoto et al.
patent: 4765286 (1988-08-01), Lyjak et al.
patent: 5740770 (1998-04-01), Morota
patent: 5762036 (1998-06-01), Verkleen
patent: 5950587 (1999-09-01), Sattler et al.

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