Heat insulating material

Patent metadata

Field	Value
Publication number	US-11280246-B2
Application number	US-202117209232-A
Country	US
Kind code	B2
Filing date	Mar 23, 2021
Priority date	Aug 3, 2020
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A heat insulating material includes a central portion to cover a first base or a second base of an exhaust gas purifier of an engine, and a first rectangular portion and a second rectangular portion which have substantially rectangular shapes and which are connected to the central portion substantially symmetrically with respect to a center of the central portion. The second base is provided opposite to the first base. The first rectangular portion and the second rectangular portion are configured to cover a side surface of the exhaust gas purifier. The side surface connects the first base and the second base.

First claim

What is claimed is:

1. A heat insulating material comprising:
a central portion to cover a first base or a second base of an exhaust gas purifier of an engine, the second base being provided opposite to the first base; and
a first rectangular portion and a second rectangular portion which have substantially rectangular shapes and which are connected to the central portion substantially symmetrically with respect to a center of the central portion, the first rectangular portion and the second rectangular portion being configured to cover a side surface of the exhaust gas purifier, the side surface connecting the first base and the second base.

2. The heat insulating material according to claim 1 , wherein the second rectangular portion has a slit to prevent the heat insulating material from being separated from the exhaust gas purifier.

3. The heat insulating material according to claim 1 , wherein the second rectangular portion has a recess through which a connecting pipe connecting the engine and the exhaust gas purifier passes.

4. The heat insulating material according to claim 1 , wherein the exhaust gas purifier comprises a particulate collection filter.

5. The heat insulating material according to claim 1 , wherein the exhaust gas purifier has a substantially cylindrical shape.

6. The heat insulating material according to claim 5 , wherein the central portion has a substantially circular shape.

7. The heat insulating material according to claim 1 , wherein the second rectangular portion has a first through hole through which an exhaust pipe for exhaust gas from the exhaust gas purifier passes.

8. The heat insulating material according to claim 7 , wherein the second rectangular portion has a second additional slit that connects the first through hole and an outer edge of the second rectangular portion.

9. The heat insulating material according to claim 1 , further comprising:
a first extending portion extending from the central portion in a direction away from the center of the central portion and configured to be connected to the first rectangular portion.

10. The heat insulating material according to claim 9 , further comprising:
a second extending portion that is point-symmetric to the first extending portion with respect to the center.

11. The heat insulating material according to claim 10 , further comprising:
a plurality of pasting margins extending from the central portion in a direction away from the center of the central portion and connected to the first rectangular portion or the second rectangular portion, wherein first additional slits are provided at a boundary between the first rectangular portion and the plurality of pasting margins, at a boundary between the second rectangular portion and the plurality of pasting margins, and at a boundary between adjacent pasting margins among the plurality of pasting margins.

12. The heat insulating material according to claim 1 , wherein the second rectangular portion has a second through hole through which a temperature sensor is mounted on the exhaust gas purifier.

13. The heat insulating material according to claim 12 , wherein the second rectangular portion has a third additional slit that connects the second through hole and an outer edge of the second rectangular portion.

14. The heat insulating material according to claim 12 , wherein the second rectangular portion has a third through hole through which a pressure supply pipe connected to a differential pressure sensor mounted on the exhaust gas purifier passes.

15. The heat insulating material according to claim 14 , wherein the second rectangular portion has a fourth additional slit that connects the third through hole and an outer edge of the second rectangular portion.

Assignees

• Kubota Kk

Inventors

• Kimura Taketo
• Kawano Hayato

Classifications

• Y02T10/12

  Improving ICE efficiencies · CPC title

• F01N13/14 Primary

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

• 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

• F01N3/10

  by thermal or catalytic conversion of noxious components of exhaust · CPC title