Variable suction resonator system for internal combustion engine

Details Variable suction resonator system for internal combustion engine Variable suction resonator system for internal combustion engine

1997-12-12

1999-04-20

McMahon, Marguerite

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02B 2702

Patent

active

058948236

ABSTRACT:
A variable suction resonator system for internal combustion engines is disclosed. The resonator system generates a variable tuning frequency suitable for freely and effectively meeting and offsetting suction frequencies variable in accordance with the rpm of an engine, thus effectively reducing suction noises of the engine. In the system, an expansible diaphragm interiorly covers a neck, which connects a suction duct to a resonator. A pressure controller selectively pressurizes and expands the diaphragm, thus allowing the diaphragm to control the sectional area of the neck. An electronic control unit calculates an effective tuning frequency of the resonator in response to the rpm of an engine, thus controlling the pressure controller and allowing the sectional area of the neck to be selectively changed by the diaphragm.

REFERENCES:
patent: 4546733 (1985-10-01), Fukami et al.
patent: 4549947 (1985-10-01), Sawada et al.
patent: 5002021 (1991-03-01), Nakata et al.
patent: 5107800 (1992-04-01), Araki et al.

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