Valve provided with a stabilizing member secured to the flap and exhaust line equipped with such a valve

Patent metadata

Field	Value
Publication number	US-11035475-B2
Application number	US-201916452935-A
Country	US
Kind code	B2
Filing date	Jun 26, 2019
Priority date	Jun 27, 2018
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A valve comprises a flap, a tubular valve body defining an exhaust gas flow passage, and a device to guide the flap relative to the valve body to allow the flap to pivot relative to the valve body around a pivot axis between a closing position and a freed position of the exhaust gas flow passage. The flap has two large faces substantially parallel to one another and connected to one another by an edge of the flap. The guide device comprises a pin, a distal, end and a base. The valve also comprises a stabilizing member secured to the flap.

First claim

The invention claimed is:

1. A valve comprising:
a flap;
a tubular valve body defining an exhaust gas flow passage;
a guiding device to guide the flap relative to the tubular valve body to allow the flap to pivot relative to the tubular valve body around a pivot axis between a closing position and a freed position of the exhaust gas flow passage, the flap having two large faces substantially parallel to one another and connected to one another by an edge of the flap, the guiding device comprising a pin including:
a distal end, traversed by the pivot axis, bearing against the tubular valve body, and
a base, which defines a bearing face opposite the distal end and traversed by the pivot axis, and wherein the base has at least one slot in which the edge of the flap is received; and

a stabilizing member secured to the flap, the stabilizing member having two protruding portions, each protruding portion protruding opposingly from the pivot axis beyond a respective one of the two large faces of the flap, each protruding portion being in contact with the bearing face of the pin, and wherein at least one of the two protruding portions has a support face in contact with the bearing face of the pin, the support face being planar.

2. The valve according to claim 1 , wherein the bearing face of the pin is planar and the support face is substantially parallel to the bearing face of the pin, and wherein the support face has a planar surface extending from one end of the protruding portion to an opposite end of the protruding portion.

3. The valve according to claim 1 , wherein the at least one slot comprises two slots, each slot being substantially parallel to the pivot axis.

4. The valve to claim 1 , wherein a width of the at least one slot is larger than that of the edge of the flap.

5. The valve according to claim 1 , wherein the pin has a thermal expansion coefficient lower than that of the flap.

6. A motor vehicle exhaust line comprising a valve according to claim 1 .

7. A motor vehicle comprising a motor vehicle exhaust line according to claim 6 .

8. The valve according to claim 1 , wherein the tubular valve body is positioned downstream of an exhaust manifold that receives heat engine exhaust gases, and wherein the tubular valve body has an inlet to the exhaust gas flow passage that receives the heat engine exhaust gases.

9. The valve according to claim 1 , wherein the flap has a notch in which the pin is partially housed.

10. The valve according to claim 9 , wherein the stabilizing member is engaged in the notch, in particular in a wide bottom segment of the notch.

11. The valve according to claim 1 , wherein the bearing face of the pin is planar and has a groove arranged in the bearing face of the pin that divides the bearing surface of the pin into two coplanar half-surfaces.

12. The valve according to claim 11 , wherein the bearing face of the pin is substantially orthogonal to the pivot axis.

13. The valve according to claim 11 , wherein the bearing face of the pin is inclined relative to the pivot axis, the bearing face forming, with the pivot axis, a minimal angle comprised between 30° and 60°.

14. The valve according to claim 13 , wherein the bearing face forms, with the pivot axis, a minimal angle comprised between 40° and 50°.

15. The valve according to claim 1 , wherein the stabilizing member comprises a plate that is secured to the flap.

16. The valve according to claim 15 , wherein the plate is engaged in a notch arranged in a rim of the flap and which emerges in each of the two large faces of the flap.

17. The valve according to claim 16 , wherein the notch is bordered by a bottom wall and by two side walls arranged opposite one another and each extending from the bottom wall to an opening by which the notch emerges outside the flap, and wherein the notch has a narrow segment and a wide bottom segment at the bottom wall that is wider than the narrow segment, and wherein the plate is engaged within the wide bottom segment.

18. The valve according to claim 17 , wherein the at least one slot comprises at least two slots, and wherein the narrow segment is defined by the two side walls which are at a first distance from one another substantially equal to a distance between bottoms of the at least two slots of the pin.

19. The valve according to claim 18 , wherein the wide bottom segment is defined by the two side walls which are at a second distance from one another greater than the distance between the bottoms of the at least two slots, and wherein the second distance is greater than or equal to a diameter of the pin.

20. The valve according to claim 19 , wherein the notch includes an intermediate segment defined by the two side walls which are at a third distance from one another, the third distance being less than the second distance and greater than the first distance, and wherein the intermediate segment is between the narrow segment and the wide bottom segment.

Assignees

• Faurecia Systemes Dechappement

Inventors

• Delplanque Gilbert
• Botella Ronan
• Bredent Yannick

Classifications

• F02M26/70

  Flap valves; Rotary valves; Sliding valves; Resilient valves · CPC title

• F02D9/106

  Sealing of the valve shaft in the housing, e.g. details of the bearings · CPC title

• F16K1/225 Primary

  the axis of rotation having only one bearing · CPC title

• F16K47/045

  and the closure member being rotatable · CPC title

• F02D9/04 Primary

  concerning exhaust conduits (throttle valves, or arrangements thereof in conduits F02D9/08) · CPC title