Intake port device for an engine of a vehicle

Details Intake port device for an engine of a vehicle Intake port device for an engine of a vehicle

1996-07-05

1998-08-25

Okonsky, David A.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 3500

Patent

active

057973652

ABSTRACT:
An intake port device for an engine of a vehicle includes a cylinder head having an intake port therein, an intake valve, disposed at an end of the intake port leading to an engine cylinder, for opening and closing the intake port, and a cross-section controller for controlling a cross-sectional area of a portion of the intake port. The cross-section controller includes an elastic member disposed about an inner wall of the intake port, and a movable member forming a portion of the inner wall of the intake port. The movable member may be a hydraulically controlled piston which moves according to the speed of the engine so as to change the cross-sectional area of the intake port; thus, properly and effectively generating a swirling air flow to improve combustion within the engine.

REFERENCES:
patent: 4274368 (1981-06-01), Shaffer
patent: 4465035 (1984-08-01), Carr
patent: 4928638 (1990-05-01), Overbeck
patent: 5216985 (1993-06-01), Brummer et al.
patent: 5311848 (1994-05-01), Isaka et al.

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