Honeycomb body thermal barrier, exhaust gas treatment article, exhaust system, and methods of manufacturing same
OwnerDana Craig Bookbinder, Pushkar Tandon +1inventors
InventorsDana Craig Bookbinder, Pushkar Tandon, Christopher John Warren
Life of this patent
Estimating the term…
Abstract
An exhaust system includes an exhaust gas treatment article having a porous ceramic honeycomb body mounted in a housing. The exhaust gas treatment article includes a thermal barrier disposed at the outer peripheral surface of the honeycomb body, wherein the thermal barrier comprises blocked peripheral cell channels adjacent to and around the entire peripheral surface and/or a thermal barrier skin.
Claims23
An exhaust gas treatment article, comprising:
- a honeycomb body, comprising:
- a porous ceramic and having a plurality of channel walls extending axially from opposing first and second end faces defining cell channels therebetween, and an outer peripheral surface extending axially, and
- a thermal barrier disposed at the outer peripheral surface, wherein the thermal barrier comprises at least one of:
- blocked peripheral cell channels adjacent to and around the peripheral surface and
- a thermal barrier skin;
- and
- a housing configured to mount the honeycomb body,
- wherein an inner surface of the housing is in direct contact with the honeycomb body.
(canceled)
(canceled)
An exhaust system, comprising:
- an inlet configured to accept an exhaust gas stream to be purified;
- an exhaust gas treatment article configured to flow the exhaust gas stream through a honeycomb body to purify the exhaust gas stream;
- and
- an outlet configured to emit the purified exhaust gas stream,
- wherein the exhaust gas treatment article comprises:
- a honeycomb body, comprising:
- a porous ceramic and having a plurality of channel walls extending axially from opposing first and second end faces defining cell channels therebetween, and an outer peripheral surface extending axially, and
- a thermal barrier disposed at the outer peripheral surface, wherein the thermal barrier comprises at least one of:
- blocked peripheral cell channels adjacent to and around the peripheral surface and
- a thermal barrier skin;
- and
- a housing configured to mount the porous ceramic honeycomb body,
- wherein an inner surface of the housing is in direct contact with the honeycomb body.
A method of manufacturing an exhaust gas treatment article, comprising:
- mounting a honeycomb body in a housing, the honeycomb body comprising a porous ceramic and having a plurality of channel walls extending axially from opposing first and second end faces defining cell channels therebetween, and an outer peripheral surface extending axially, the housing configured to hold the honeycomb body in an exhaust gas stream, the mounting comprising:
- disposing the honeycomb body in an inner space defined by an inner surface of the housing,
- wherein the honeycomb body comprises a thermal barrier disposed at the outer peripheral surface, wherein the thermal barrier comprises at least one of blocked peripheral cell channels adjacent to and around the peripheral surface and a thermal barrier skin, and
- wherein the inner surface of the housing is in direct contact with the honeycomb body.
(canceled)
Dependencies are inferred from the claim text.