Muffler with catalyst for internal combustion engine

Details Muffler with catalyst for internal combustion engine Muffler with catalyst for internal combustion engine

1985-02-26

1986-04-01

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181256, 181262, 181265, 181272, F01N 114, F01N 315

Patent

active

045791945

ABSTRACT:
A muffler for internal combustion engine houses a catalyst for exhaust gas purification and is provided with an exhaust gas inlet pipe through which exhaust gas from the engine is fed to the upstream side of the catalyst. The exhaust gas inlet pipe includes an inlet pipe section provided therein with a venturi section through which atmospheric air as secondary air is inducted into the exhaust gas inlet pipe. The inlet pipe section is extended in the direction of exhaust gas flow to form an extension pipe section which has a length of at least two times the inner diameter of the extension pipe section, thereby suppressing cutoff frequency at lower levels.

REFERENCES:
patent: 2482987 (1949-09-01), De N. McCollum
patent: 3038552 (1962-06-01), Hedblom
patent: 3061416 (1962-10-01), Kazokas
patent: 3471265 (1969-10-01), Ciapetta et al.
patent: 4050903 (1977-09-01), Bailey et al.
patent: 4124091 (1978-11-01), Mizusawa

Affiliated with

Also associated with

Rating

Muffler with catalyst for internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Muffler with catalyst for internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Muffler with catalyst for internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1080051