Exhaust-gas aftertreatment system

Patent metadata

Field	Value
Publication number	US-2015121856-A1
Application number	US-201414522163-A
Country	US
Kind code	A1
Filing date	Oct 23, 2014
Priority date	Nov 5, 2013
Publication date	May 7, 2015
Grant date	—

Abstract

An exhaust-gas aftertreatment system including an exhaust-gas module which has an inlet section and an outlet section. The exhaust-gas aftertreatment system has at least one sensor fastening device which comprises at least two, preferably at least three, sensor fastening means that are angularly spaced apart from one another.

First claim

1 . An exhaust-gas aftertreatment system, comprising:
at least one exhaust-gas module with an inlet section and an outlet section, and a sensor fastening device having at least two spaced-apart fasteners, each of the fasteners providing a fixing position for an exhaust-gas sensor, whereby the at least two spaced-apart fasteners provide at least two fastening options for the exhaust-gas sensor making it more likely that the exhaust gas sensor extend within a desired angular range.

2 . The exhaust-gas aftertreatment system according to claim 1 , wherein the exhaust-gas aftertreatment system is of modular construction for one of a vehicle, a pump, or a generator unit.

3 . The exhaust-gas aftertreatment system according to claim 1 , wherein the sensor fastening device is arranged at one of the inlet section and the outlet section.

4 . The exhaust-gas aftertreatment system according to claim 1 , wherein the fasteners are spaced apart from one another in a circumferential direction or angularly.

5 . The exhaust-gas aftertreatment system according to claim 4 , wherein the fasteners are spaced apart from one another by one of 60°+/−15° and 120°+/−15°.

6 . The exhaust-gas aftertreatment system according to claim 1 , wherein the sensor fastening device comprises an annular base element with a circumferential surface, and the fasteners are formed on the circumferential surface.

7 . The exhaust-gas aftertreatment system according to claim 1 , wherein the fasteners provide a passage opening in the sensor device that permits exhaust-gas measurement by an exhaust-gas sensor.

8 . The exhaust-gas aftertreatment system according to claim 1 , wherein the fasteners comprise sensor fastening connectors.

9 . The exhaust-gas aftertreatment system according to claim 1 , wherein the fasteners are designed for an exhaust-gas sensor to be threadably screwed thereon.

10 . The exhaust-gas aftertreatment system according to claim 1 , wherein the fasteners without a sensor are closed in order to prevent an escape of exhaust gas.

11 . The exhaust-gas aftertreatment system according to claim 1 , wherein the sensor fastening device is a first fastening device arranged at the inlet section and the exhaust-gas aftertreatment system includes a second sensor fastening device with at least two spaced-apart fasteners arranged at the outlet section.

12 . The exhaust-gas aftertreatment system according to claim 11 , wherein the first one sensor fastening device is arranged between the exhaust-gas module and a reducing agent module.

13 . The exhaust-gas aftertreatment system according to claim 1 , wherein the sensor fastening device has at least one of a temperature sensor and an NOx sensor.

14 . The exhaust-gas aftertreatment system according to claim 1 , further comprising a device with evaluation electronics, the device connecting to at least one sensor fastened on or in one of the fasteners and arranged so as to be displaceable such that it can be fixed in different angular positions relative to the exhaust-gas module.

15 . The exhaust-gas aftertreatment system according to claim 1 , further comprising a reducing agent module, and the installation angle between the exhaust-gas module and the reducing agent module is variable.

16 . The exhaust-gas aftertreatment system according to claim 1 , wherein the exhaust-gas module (M 1 ) comprises at least one of the following:
a catalytic converter, an SCR catalytic converter, an oxidation catalytic converter, a particle filter.

17 . The exhaust-gas aftertreatment system according to claim 1 , wherein the sensor fastening device comprises at least two first fasteners and at least two second fasteners, the first fasteners having a different configuration from the second fasteners, the at least two first fasteners providing at least two fastening options for a temperature sensor and the at least two second fasteners providing at least two fastening options for an NOx sensor.

18 . A vehicle having an exhaust-gas aftertreatment system according to claim 1 .

Assignees

• Man Truck & Bus Ag

Inventors

• Winterhoff Marc
• Herrmann Tobias

Classifications

• F01N11/002

  the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus · CPC title

• F02B77/086

  Sensor arrangements in the exhaust, e.g. for temperature, misfire, air/fuel ratio, oxygen sensors · CPC title

• F01N2560/026

  for measuring or detecting NOx · CPC title

• G01M15/102

  by monitoring exhaust gases · CPC title

• F01N3/2066

  Selective catalytic reduction [SCR] · CPC title