Variable air intake manifold

Details Variable air intake manifold Variable air intake manifold

1996-10-15

1997-06-17

Okonsky, David A.

Internal-combustion engines

Intake manifold

For engine having radiating cylinders

12318455, F02M 3510

Patent

active

056387857

ABSTRACT:
An intake manifold assembly (12) for an internal combustion engine (16) which can vary the intake geometry of the air flowing therethrough. The intake manifold assembly (12) includes a pair of secondary runners (28), one for each bank of cylinders, with each of the secondary runners (28) able to selectively communicate with a small plenum (44) at its end or a large plenum (36) intermediate its ends. The intake manifold assembly (12) also includes a set of primary runners (46) able to selectively communicate with the small plenums (44) at their upstream ends or the large plenums (36) intermediate their ends. The airflow is switchable through the actuation of upper runner control valves (40) and lower runner control valves (50) to thereby vary the tuning of the intake manifold to improve the overall torque and horsepower output of the engine.

REFERENCES:
patent: 4671217 (1987-06-01), Hitomi et al.
patent: 4945865 (1990-08-01), Lee
patent: 5005536 (1991-04-01), Suzuki et al.
patent: 5088454 (1992-02-01), Washizu et al.
patent: 5125369 (1992-06-01), Hitomi et al.
patent: 5309883 (1994-05-01), Pischke

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