Variable cross section catalytic converter

Details Variable cross section catalytic converter Variable cross section catalytic converter

1991-08-19

1992-10-13

Kummert, Lynn M.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422181, 422221, 422222, 422171, 60288, 60290, 60299, B01D 5000, F01N 300

Patent

active

051548941

ABSTRACT:
A catalytic converter for use in the exhaust system of an internal combustion engine having a rigid outer canister with a catalyst support disposed therein for movement between a first position adjacent in inlet end of the canister and a second position located in spaced relationship with said inlet end. In its first position, the substrate seals the inlet thereby forcing the entire exhaust flow through the fluid flow passages within the catalyst support which are in axial alignment with the converter inlet. The effect of forcing the totality of flow reduced volume of the substrate to the entire thermal energy of the exhaust stream thereby assisting in a reduction in the catalyst light-off time. Following catalyst light-off, the catalyst support is moved to its second, spaced position in which the entire frontal area of the converter is exposed to the exhaust flow thereby lowering backpressure of the converter and preventing converter overtemperature problems.

REFERENCES:
patent: 3287899 (1966-11-01), Bintz
patent: 3361350 (1968-01-01), Genbauffe
patent: 3814589 (1974-06-01), Heitland
patent: 3954418 (1976-05-01), Stormont
patent: 4023360 (1977-05-01), Wossner et al.

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