US 12,013,075 B2Granted

Insulated exhaust gas conduit systems

AssigneeCummins Emission Solutions Inc.

InventorsJacob D. Canik, Andrew Komisarek, Corey Verseman

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Abstract

An insulated exhaust gas conduit system includes a first exhaust gas conduit, a second exhaust gas conduit, a first insulation sleeve, and a second insulation sleeve. The first exhaust gas conduit has a first exhaust gas conduit end portion. The second exhaust gas conduit has a second exhaust gas conduit end portion that is configured to engage with the first exhaust gas conduit end portion. The first insulation sleeve includes a first insulation sleeve insulation layer and a first insulation sleeve heat shield. The first insulation sleeve insulation layer is disposed around the first exhaust gas conduit. The first insulation sleeve heat shield is disposed around the first insulation sleeve insulation layer. The first insulation sleeve extends beyond the first exhaust gas conduit end portion. The second insulation sleeve includes a second insulation sleeve insulation layer and a second insulation sleeve heat shield.

Claims22

Dependent claims

An insulated exhaust gas conduit system comprising:

a first exhaust gas conduit having a first exhaust gas conduit end portion;
a second exhaust gas conduit having a second exhaust gas conduit end portion configured to engage with the first exhaust gas conduit end portion;
a first insulation sleeve comprising:
a first insulation sleeve insulation layer;
and
a first insulation sleeve heat shield disposed around the first insulation sleeve insulation layer,
wherein a first portion of the first insulation sleeve insulation layer is disposed around the first exhaust gas conduit, and a second portion of the first insulation sleeve insulation layer extends beyond the first exhaust gas conduit end portion and is disposed around the second exhaust gas conduit end portion, and the first portion and the second portion of the first insulation sleeve insulation layer are formed as a single continuous piece;
and
a second insulation sleeve comprising:
a second insulation sleeve insulation layer disposed around the second exhaust gas conduit;
and
a second insulation sleeve heat shield disposed around the second insulation sleeve insulation layer,
wherein the second exhaust gas conduit end portion is exposed from the second insulation sleeve, wherein:
the first insulation sleeve insulation layer comprises:
a first insulation sleeve insulation layer body interfacing with the first exhaust gas conduit;
and
a first insulation sleeve insulation layer end contiguous with the first insulation sleeve insulation layer body and separated from the first exhaust gas conduit;
the first insulation sleeve heat shield comprises:
a first insulation sleeve heat shield body interfacing with the first insulation sleeve insulation layer body and the first insulation sleeve insulation layer end;
and
a first insulation sleeve heat shield end portion contiguous with the first insulation sleeve heat shield body, the first insulation sleeve heat shield end portion interfacing with the first insulation sleeve insulation layer end and extending inward from the first insulation sleeve heat shield body towards the second exhaust gas conduit.

18 more elements

An insulated exhaust gas conduit system comprising:

a first exhaust gas conduit having a first exhaust gas conduit end portion;
a second exhaust gas conduit having a second exhaust gas conduit end portion configured to couple to the first exhaust gas conduit end portion at a joint, the second exhaust gas conduit end portion comprising a flange configured to overlap the first exhaust gas conduit end portion at the joint;
a first insulation layer disposed on the first exhaust gas conduit, wherein the first insulation layer extends beyond the first exhaust gas conduit end portion;
a second insulation layer disposed on the second exhaust gas conduit, wherein the second insulation layer ends before the second exhaust gas conduit end portion, such that the second exhaust gas conduit end portion is exposed from the second insulation layer;
a first heat shield disposed on the first insulation layer;
a second heat shield disposed on the second insulation layer;
and
an exhaust gas conduit clamp configured to secure the first exhaust gas conduit to the second exhaust gas conduit at the joint, the exhaust gas conduit clamp having a connection portion that connect ends of the exhaust gas conduit clamp to one another, wherein a portion of the connection portion of the exhaust gas conduit clamp is located in a cutout portion of the first insulation layer and the first heat shield.

5 more elements

An insulated exhaust gas conduit system comprising:

a first exhaust gas conduit having a first exhaust gas conduit end portion;
a second exhaust gas conduit having a second exhaust gas conduit end portion configured to engage with the first exhaust gas conduit end portion;
a first insulation sleeve comprising:
a first insulation sleeve insulation layer;
and
a first insulation sleeve heat shield disposed around the first insulation sleeve insulation layer,
wherein a first portion of the first insulation sleeve insulation layer is disposed around the first exhaust gas conduit, and a second portion of the first insulation sleeve insulation layer extends beyond the first exhaust gas conduit end portion and is disposed around the second exhaust gas conduit end portion, and the first portion and the second portion of the first insulation sleeve insulation layer are formed as a single continuous piece;
and
a second insulation sleeve comprising:
a second insulation sleeve insulation layer disposed around the second exhaust gas conduit;
and
a second insulation sleeve heat shield disposed around the second insulation sleeve insulation layer,
wherein the second exhaust gas conduit end portion is exposed from the second insulation sleeve, wherein:
the second exhaust gas conduit comprises:
a second exhaust gas conduit body that interfaces with the second insulation sleeve insulation layer and is separated from the second insulation sleeve heat shield by the second insulation sleeve insulation layer, the second exhaust gas conduit body having a first diameter;
and
wherein the second exhaust gas conduit end portion comprises:
a second exhaust gas conduit flange that is contiguous with the second exhaust gas conduit body;
and
a second exhaust gas conduit collar that is contiguous with the second exhaust gas conduit flange and separated from the second exhaust gas conduit body by the second exhaust gas conduit flange, the second exhaust gas conduit collar having a second diameter greater than the first diameter.

17 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/785,291Filed 17 Dec 2019
Published: US 2023/0009619 A112 Jan 2023
Granted: 18 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F16L 59/182
Adapted for joints: joints with sleeve or socket
F01N 13/00
Exhaust or silencing apparatus characterised by constructional features
F01N 13/14
Exhaust or silencing apparatus characterised by constructional features: having thermal insulation
F01N 13/148
Having thermal insulation: multiple layers of insulating material