Remote diesel oxidation catalyst for a prime mover of a transport power system

Patent metadata

Field	Value
Publication number	US-12480432-B2
Application number	US-202418827027-A
Country	US
Kind code	B2
Filing date	Sep 6, 2024
Priority date	Sep 8, 2023
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

A transport power system for generating power is provided. The transport power system includes an extended mid-pipe having a flexible member and an insulated member that is connected to the flexible member. The flexible member is coupled to an exhaust manifold disposed on a diesel prime mover that is configured to generate exhaust. The extended mid-pipe is configured to receive the exhaust from the exhaust manifold. The diesel oxidation catalyst (DOC) is coupled to the insulated member. The transport power system also includes a housing containing the DOC and the diesel prime mover. The DOC is positioned away from the diesel prime mover such that the DOC is configured to be unstacked in a depth direction of the housing. The insulated member is configured to maintain a temperature of the exhaust to at or above an activation temperature of the DOC.

First claim

What is claimed is:

1 . A transport power system for generating power, the transport power system comprising:
an extended mid-pipe having a flexible member and an insulated member that is connected to the flexible member, the flexible member directly coupled to an exhaust manifold disposed on a diesel prime mover that is configured to generate exhaust, wherein the extended mid-pipe is configured to receive the exhaust from the exhaust manifold; a diesel oxidation catalyst (DOC) coupled to the insulated member; and a housing containing the DOC and the diesel prime mover, wherein the DOC is positioned away from the diesel prime mover such that the DOC is configured to be unstacked in a depth direction of the housing, wherein the insulated member is configured to maintain a temperature of the exhaust to at or above an activation temperature of the DOC, wherein the insulated member extends in a horizontal direction from the flexible member and curves vertically upward to connect to the DOC, and wherein the insulated member is directly coupled to the flexible member and to an inlet of the DOC.

2 . The transport power system of claim 1 , further comprising:
a mounting bracket that fixedly attaches the DOC to the housing, wherein the flexible member is structurally configured to dampen vibration created by the diesel prime mover.

3 . The transport power system of claim 1 , wherein
the insulated member includes a rigid pipe that is covered by an insulation.

4 . The transport power system of any one of claim 1 , wherein
the insulated member extends upward and laterally away from the diesel prime mover for an outlet of the extended mid-pipe to couple with the DOC.

5 . The transport power system of claim 1 , wherein the depth direction of the housing, upon the housing being installed onto a transport unit, corresponds to a length direction of the transport unit such that a width of the housing fits within a clearance on an end of the transport unit.

6 . The transport power system of claim 1 , wherein the DOC is not mounted on the diesel prime mover.

7 . The transport power system of claim 1 , wherein the flexible member includes a convoluted stainless steel tube disposed over a corrugated tube.

8 . The transport power system of claim 1 , wherein the insulated member includes a stainless steel tube covered by an insulation.

9 . The transport power system of claim 1 , wherein the flexible member includes a tube disposed over a corrugated tube, and wherein a helical mesh member disposed within the corrugated tube.

10 . The extended mid-pipe of claim 1 , wherein the flexible member includes a tube disposed over a corrugated tube, and wherein a helical mesh member disposed within the corrugated tube.

11 . An extended mid-pipe for an exhaust assembly of a transport power system that is configured to generate power, the extended mid-pipe comprising:
a flexible member configured to receive an exhaust from a diesel prime mover; and an insulated member disposed between the flexible member and a diesel oxidation catalyst (DOC), the insulated member configured to maintain a temperature of the exhaust at or above an activation temperature of the DOC, wherein the insulated member is configured to be directly coupled to an inlet of the DOC and to the flexible member, wherein the flexible member is configured to be directly coupled to and extend from the prime mover, and wherein the insulated member extends in a horizontal direction and then in an upward direction such that an outlet of the extended mid-pipe is configured to be connected to the DOC that is disposed away from an inlet of the extended mid-pipe such that the DOC is configured to be unstacked with the prime mover in a depth direction of a housing containing the DOC and the prime mover.

12 . The extended mid-pipe of claim 11 , wherein the flexible member is configured to dampen vibration created by the prime mover.

13 . The extended mid-pipe of claim 11 , wherein the insulated member includes a rigid pipe that is covered by an insulation.

14 . The extended mid-pipe of claim 11 , wherein the flexible member includes a convoluted stainless steel tube disposed over a corrugated tube.

15 . The extended mid-pipe of claim 11 , wherein the insulated member includes a stainless steel tube covered by an insulation.

Assignees

• Thermo King Llc

Inventors

• Lucht Erich A
• Gleason Kyle J

Classifications

• F01N2260/20

  for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device · CPC title

• F01N2590/08

  for heavy duty applications, e.g. trucks, buses, tractors, locomotives · CPC title

• F01N13/1816

  the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes · CPC title

• F01N13/14

  having thermal insulation {(exhaust manifolds F01N13/102)} · CPC title

• F01N13/1822

  for fixing exhaust pipes or devices to vehicle body · CPC title