Tube with variable inside diameter

Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means

Patent

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F02M 3510

Patent

active

057223580

ABSTRACT:
A tube, particularly suitable for use as a part of the intake manifold of an internal-combustion engine, having an inside diameter which can be changed as a function of the operating condition of the internal-combustion engine.

REFERENCES:
patent: 3875918 (1975-04-01), Loynd
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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