Exhaust processor end cap

Details Exhaust processor end cap Exhaust processor end cap

2000-06-14

2001-07-03

Hook, James (Department: 3752)

Pipes and tubular conduits

With flow regulators and/or baffles

Flow facilitating

C138S177000, C138S178000, C055SDIG003

Reexamination Certificate

active

06253792

ABSTRACT:

The present invention relates to end caps that arc coupled to a body, and particularly to end caps for use in vehicle exhaust processors. More particularly, the present invention relates to end caps that are sized to mate with a shell containing an exhaust processor substrate therein.
Exhaust processors are part of a vehicle exhaust system that, in general “cleans” and “quiets” exhaust gas produced by a vehicle engine before the exhaust gas is discharged from an engine system to the atmosphere. An exhaust processor typically includes an exhaust processor body and end caps which close the ends of the exhaust processor body. The size of each exhaust processor body varies to fit a certain vehicle specification and thus an end cap must be able to fit on exhaust processor bodies of various sizes.
In accordance with the present invention, an exhaust processor is provided having an exhaust processor body and first and second end caps. The exhaust processor body includes an outer shell and a substrate positioned to lie within the outer shell. The outer shell includes an outer surface facing away from the substrate, an inner surface facing toward the substrate, and spaced apart first and second ends. The inner surface of the outer shell defines a first end cap region at the first end, a second end cap region at the second end, and a inner surface size. The first end cap is positioned to lie in the first end cap region. The second end cap is positioned to lie in the second end cap region. Each of the first and second end caps include a crimpable flange that is sizable to include a size substantially equal to the inner surface size of the inner surface of the outer shell.
A mat made of an intumescent material is positioned to lie between the outer shell and the substrate. The first and second end caps are arranged to abut or lie very close to the mat and the substrate so that the mat is not exposed to mat-degrading exhaust gas passing through the exhaust processor body.
Additional features and advantages of the invention will become apparent to those skilled in the art upon consideration of the following detailed description of preferred embodiments exemplifying the best mode of carrying out the invention as presently perceived.


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