Combination muffler and catalytic converter

Details Combination muffler and catalytic converter Combination muffler and catalytic converter

1976-10-29

1977-09-27

Tayman, Jr., James H.

Chemistry: physical processes

Physical processes

Crystallization

23288F, 60299, 60301, 4232132, 181 36C, 181259, F01N 315

Patent

active

040509036

ABSTRACT:
Combination muffler and catalytic converter utilizes an axial flow monolithic catalytic element to treat exhaust gases from an internal combustion engine and partially reduce their sound. A perforated chamber around the catalytic element, a downstream perforated tube, and an upstream flow reversal chamber further reduce the sound. The device incorporates a venturi in the exhaust gas inlet path to add secondary air. Gas swirling and gas flow reversal structure is also provided to thoroughly mix the secondary air with the exhaust gases before the mixture is passed through a flow distribution plate and into contact with the catalytic element.

REFERENCES:
patent: 2747976 (1956-05-01), Houdry
patent: 3852042 (1974-12-01), Wagner

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