Air intake noise suppressor for an internal combustion engine

Details Air intake noise suppressor for an internal combustion engine Air intake noise suppressor for an internal combustion engine

1987-07-07

1988-07-19

Fuller, B. R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181227, 181250, F02M 3500

Patent

active

047578742

ABSTRACT:
An air intake noise suppressor for reducing noise generated by intake air sucked into an internal combustion engine. An intake pipe is provided with a resonance pipe, which extends forwards within the intake pipe as penetrating through a rear end wall of the intake pipe, communicates with the interior of the intake pipe through an opening at its front end, extends backwards from the rear end wall externally of the intake pipe and has its rear end closed, and the resonance pipe is fixedly locked to the intake pipe at its portion penetrating through the rear end wall and in the proximity of the opening at the front end. Since the resonance pipe is accommodated within the intake pipe over a considerable length and only its rear end portion projects backwards from the intake pipe, a surplus space is almost not necessitated for mounting the resonance pipe, and yet the resonance pipe itself can be made sufficiently long. The resonance pipe is supported simply and rigidly at its front end portion and at its middle portion by the intake pipe, and other support members are not necessitated.

REFERENCES:
patent: 2323955 (1943-07-01), Wilson
patent: 3396812 (1968-08-01), Wilcox et al.
patent: 4109751 (1978-08-01), Kabele
patent: 4418443 (1983-12-01), Fischer
patent: 4546733 (1985-10-01), Fukami et al.
patent: 4562800 (1986-01-01), Tsujibayashi

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