Catalytic exhaust muffler for motorcycles

Details Catalytic exhaust muffler for motorcycles Catalytic exhaust muffler for motorcycles

1975-12-08

1978-06-13

Richman, Barry S.

Chemistry: physical processes

Physical processes

Crystallization

23288FC, B01J 800, F01N 315

Patent

active

040946444

ABSTRACT:
Elongated, small diameter muffler assembly especially adapted for use on motorcycles has perforated tube and bulkhead portions at its entrance end for damping and diffusing the entering exhaust gas pulses to reduce their energy and to protect a ceramic catalytic element mounted within the muffler housing. Perforated tube and bulkhead portions at the exit end provide sound abatement and are sized to accomodate the increased volume of gases resulting from the heating provided by the catalyst element. The catalyst element is supported at each end in a manner which permits a sliding longitudinal movement relative to the housing by means of perforated tubes which are rigidly attached to the muffler housing at their outer ends only, while being free to thermally expand axially inwardly toward the catalytic element at a rate independent of the thermal growth of the muffler housing. The configuration of the exhaust gas flow path and the lengths of the inner metal elements and the ceramic catalyst element located inside the housing are selected to insure that the ceramic catalyst element is firmly restrained against vibratory movement in an axial direction as the outer housing expands at a higher expansion rate than the ceramic element during high temperature operation.

REFERENCES:
patent: 2898202 (1959-08-01), Houdry et al.
patent: 3166382 (1965-01-01), Purse et al.
patent: 3166895 (1965-01-01), Slayter et al.
patent: 3180712 (1965-04-01), Hamblin
patent: 3189418 (1965-06-01), Gary
patent: 3220179 (1965-11-01), Bloomfield
patent: 3445196 (1969-05-01), Thomas
patent: 3473323 (1969-10-01), Briggs et al.
patent: 3594131 (1971-07-01), DePalma et al.
patent: 3695851 (1972-10-01), Perga
patent: 3698875 (1972-10-01), Yamada
patent: 3754619 (1973-08-01), McCormick
patent: 3799748 (1974-03-01), Scheitlin et al.
patent: 3824790 (1974-07-01), Thomaides
patent: 3861881 (1975-01-01), Nowak
patent: 3945806 (1976-03-01), Musall et al.

Affiliated with

Also associated with

Rating

Catalytic exhaust muffler for motorcycles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalytic exhaust muffler for motorcycles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalytic exhaust muffler for motorcycles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-7033