Sensor mounting arrangement

• US 9,217,355 B2
• Filed: 12/12/2011
• Issued: 12/22/2015
• Est. Priority Date: 12/12/2011
• Status: Active Grant

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Boahene, Michael P., Sanborn, Ethan D., Engelsen, Kristian N., Denis, Andrew M.
• Primary Examiner(s): Caputo, Lisa
• Assistant Examiner(s): ROY, PUNAM P
• Application Number:
  US13/316,941
• Publication Number:
  US 20130145820A1
• Time in Patent Office: 1,471 Days
• US Class Current: 1/1
• CPC Class Codes: F01N 13/008 Mounting or arrangement of exhaust sensors in or on exhaust apparatus sensor arrangements for engine control F02D41/1439
• CPC Class Codes: F01N 13/017 the purifying devices are arranged in a single housing
• CPC Class Codes: F01N 2470/22 Inlet and outlet tubes being positioned on the same side of the apparatus
• CPC Class Codes: F01N 2560/026 for measuring or detecting NOx
• CPC Class Codes: F01N 2560/14 having more than one sensor of one kind
• CPC Class Codes: F01N 2590/10 for stationary applications
• CPC Class Codes: F01N 3/2066 Selective catalytic reduction [SCR]
• CPC Class Codes: F02D 41/1441 Plural sensors
• CPC Class Codes: F02D 41/146 the characteristics being an NOx content or concentration
• CPC Class Codes: F02D 41/266 the computer being backed-up or assisted by another circuit, e.g. analogue
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

An arrangement for mounting at least one electrical component to a portion of an aftertreatment module, the arrangement including; at least one standoff member coupled between the electrical component and the portion of the aftertreatment module, and an enclosure substantially surrounding at least three sides of the electrical component.

Claims

1. An arrangement for mounting at least one electrical component to a portion of an aftertreatment module, the arrangement comprising:

at least one standoff member coupled between the electrical component and the portion of the aftertreatment module;

an enclosure substantially surrounding at least three sides of the electrical component;

at least one first spacer disposed between the electrical component and the enclosure;

at least one fastener configured to couple the electronic control unit the enclosure; and

at least one second spacer disposed between a distal end of the at least one fastener and the electrical component,

wherein the at least one third spacer comprises a thermally insulating material.

2. The arrangement of claim 1, further comprising at least one third spacer respectively disposed between each of the at least one standoff member and the enclosure.

3. The arrangement of claim 2, wherein the at least one third spacer comprises a thermally insulating material.

4. The arrangement of claim 3, wherein the thermally insulating material is mica.

5. The arrangement of claim 1, wherein the at least one first spacer comprises a thermally insulating material.

6. The arrangement of claim 5, wherein the thermally insulating material is mica.

7. The arrangement of claim 1, wherein the enclosure substantially surrounds at least four sides of the electrical component.

8. The arrangement of claim 1, further comprising an air gap disposed between the electrical component and the enclosure.

9. The arrangement of claim 1, wherein the enclosure is configured to reflect radiant thermal energy away from the electrical component.

10. The arrangement of claim 1, wherein the at least one standoff member includes less than three standoff members.