Arvin Industries, Inc.

George Edward Scheitlin

Robert T Usleman

Mark A Sickels

Richard F Little

An 'in-line' exhaust processor includes a housing having an inlet for introducing a combustion product from an engine and an outlet for exhausting filtered or otherwise treated combustion product from the housing. A first substrate is situated in a forward or upstream position within the housing to filter combustion product introduced into the housing through the inlet. A second substrate is situated in an adjacent rearward or downstream position within the housing to filter combustion product from at least two sources in the manner explained below. Each substrate includes a cellular structure having opposite inlet and outlet ends and a longitudinal axis. The housing includes a first clam shell portion and a complementary second clam shell portion joined to the first clam shell portion to surround and hold the substrate pair in series. The exhaust processor further includes a bypass channel for diverting a selected portion of the combustion product introduced into the housing through the housing inlet to the second substrate.

Exhaust processor

A catalytic converter includes a shell defining first and second shell portions. A first substrate supports a reducing catalyst in the first shell portion. A second substrate supports an oxidizing catalyst in the second shell portion. The shell further includes inlet and outlet passageways. The inlet passageway is disposed in the shell adjacent the first shell portion and allows combustion products to enter the shell. The outlet passageway is disposed adjacent the second shell portion and allows combustion products to exit from the shell. A third passageway located longitudinally between the first and second shell portion allows combustion product to flow readily from the first shell portion into the second shell portion. A manifold introduces air into the combustion product flowing through the third passageway and an air fitting provides access to the manifold through an exterior wall of the shell. The manifold extends perimetrally at least partially about, and conforms to the interior wall of, the shell in the third passageway. The manifold has a plurality of apertures which open inwardly to direct a plurality of streams of air from the manifold into the stream of combustion product flowing through the third passageway. The converter can be of a 'clam shell' type, having first and second longitudinal shell halves, or it can have a one-piece main shell portion.

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Columbus, IN, United States of America

George Edward Scheitlin