Device for driving exhaust gas, in particular in a recirculation line

Patent metadata

Field	Value
Publication number	US-11339748-B2
Application number	US-202017104072-A
Country	US
Kind code	B2
Filing date	Nov 25, 2020
Priority date	Nov 28, 2019
Publication date	May 24, 2022
Grant date	May 24, 2022

Abstract

A driving device includes a tubular circulation pipe of the exhaust gas, and at least two flow rate measuring members arranged to measure an exhaust gas flow rate circulating in the tubular circulation pipe. The driving device includes at least one monobloc support, housed in the tubular circulation pipe, and bearing at least two flow rate measuring members among said at least two flow rate measuring members.

First claim

The invention claimed is:

1. A driving device for driving exhaust gas, including:
a tubular circulation pipe for circulation of the exhaust gas;
at least two flow rate measuring members arranged to measure an exhaust gas flow rate of the exhaust gas circulating in the tubular circulation pipe; and
at least one monobloc support, housed in the tubular circulation pipe, and bearing at least two flow rate measuring members among said at least two flow rate measuring members, and wherein each monobloc support is made from an elastomer.

2. The driving device according to claim 1 , wherein each monobloc support is overmolded on the tubular circulation pipe.

3. The driving device according to claim 1 , wherein the at least two flow rate measuring members include at least one ultrasonic transmitter and at least one ultrasonic receiver associated with the at least one ultrasonic transmitter.

4. The driving device according to claim 1 , wherein the at least one monobloc support comprises a single monobloc support bearing all of the flow rate measuring members.

5. The driving device according to claim 1 , wherein the tubular circulation pipe is made in two parts, these two parts being connected to one another by the at least one monobloc support, without direct contact between these two parts.

6. The driving device according to claim 1 , wherein the at least one monobloc support comprises two monobloc supports, each bearing two respective flow rate measuring members.

7. The driving device according to claim 1 , wherein the tubular circulation pipe bears two branches forming sleeves for housing the at least two flow rate measuring members, each flow rate measuring member being housed in a respective one of the sleeves, the at least one monobloc support including, for each flow rate measuring member that the at least one monobloc support bears, a part bearing this flow rate measuring member while extending in a corresponding sleeve.

8. The driving device according claim 1 , wherein the tubular circulation pipe includes lateral openings, each flow rate measuring member being housed through a respective one of these lateral openings, the at least one monobloc support including, for each flow rate measuring member that the at least one monobloc support bears, a part bearing this flow rate measuring member while extending through a corresponding lateral opening.

9. The driving device according to claim 1 , wherein the tubular circulation pipe is made from plastic.

10. An exhaust gas recirculation line, including:
a driving device including a tubular circulation pipe for circulation of exhaust gas, and at least two flow rate measuring members arranged to measure an exhaust gas flow rate of the exhaust gas circulating in the tubular circulation pipe, the driving device including at least one monobloc support, housed in the tubular circulation pipe, and bearing at least two flow rate measuring members among said at least two flow rate measuring members, and wherein each monobloc support is made from an elastomer.

11. A vehicle, including:
an exhaust gas recirculation line; and
a driving device including a tubular circulation pipe for circulation of exhaust gas, and at least two flow rate measuring members arranged to measure an exhaust gas flow rate of the exhaust gas circulating in the tubular circulation pipe, the driving device including at least one monobloc support, housed in the tubular circulation pipe, and bearing at least two flow rate measuring members among said at least two flow rate measuring members, and wherein each monobloc support is made from an elastomer.

Assignees

• Faurecia Systemes Dechappement

Inventors

• Oblinger Benjamin
• Marimbordes Thierry
• Canteloube Jonathan
• Diouf Mamadou
• Botella Ronan
• Hernandez Dorian

Classifications

• F01N2560/07

  the means being an exhaust gas flow rate or velocity meter or sensor, intake flow meters only when exclusively used to determine exhaust gas parameters · CPC title

• F02M26/47 Primary

  the characteristics being temperatures, pressures or flow rates · CPC title

• G01F1/667

  Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters · CPC title

• F01N2560/12

  Other sensor principles, e.g. using electro conductivity of substrate or radio frequency · CPC title

• G01N29/02

  Analysing fluids (using acoustic emission techniques G01N29/14 {; constructional or flow details for analysing fluids G01N29/222; optoacoustic fluid cells G01N29/2425}) · CPC title