PILOTED EXHAUST LINE VALVE AND CORRESPONDING PRODUCTION METHOD

• US 20190323612A1
• Filed: 04/17/2019
• Published: 10/24/2019
• Est. Priority Date: 04/24/2018
• Status: Active Grant

• Current Assignee: Faurecia Systemes D'Echappement (Faurecia SA)
• Original Assignee: Faurecia Systemes D'Echappement (Faurecia SA)
• Inventors: BOTELLA, Ronan, CAMBILLARD, Julien, HALEPOVIC, Alen
• Granted Patent: US 10,989,309 B2
• Time in Patent Office: Days
• CPC Class Codes: F01N 1/166 for changing gas flow path through the silencer or for adjusting the dimensions of a chamber or a pipe F01N1/165 takes precedence
• CPC Class Codes: F01N 1/18 having rotary movement
• CPC Class Codes: F02D 9/04 concerning exhaust conduits throttle valves, or arrangements thereof in conduits F02D9/08
• CPC Class Codes: F02D 9/104 Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
• CPC Class Codes: F02D 9/106 Sealing of the valve shaft in the housing, e.g. details of the bearings
• CPC Class Codes: F02M 26/70 Flap valves; Rotary valves; Sliding valves; Resilient valves
• CPC Class Codes: F16K 1/225 the axis of rotation having only one bearing
• CPC Class Codes: F16K 1/2268 Sealing means for the axis of rotation
• CPC Class Codes: F16K 15/023 the valve member consisting only of a predominantly disc-shaped flat element
• CPC Class Codes: F16K 27/0218 Butterfly valves

Abstract

A valve includes a valve body having an exhaust gas inlet and an exhaust gas outlet, the valve body defining an exhaust gas circulation passage between the exhaust gas inlet and the exhaust gas outlet. A flap is arranged in the valve body and a shaft drives the flap in rotation with respect to the valve body. At least one guide bearing guides the drive shaft of the flap for rotation relative to the valve body. The guide bearing is engaged through an orifice of the valve body, with an inner end of the guide bearing being located inside the valve body. A first tube is engaged in one of the exhaust gas inlet and exhaust gas outlet and abuts against the inner end of the guide bearing.

Claims

1. A valve for an exhaust line, the valve comprising:

a valve body having an exhaust gas inlet and an exhaust gas outlet, the valve body defining an exhaust gas circulation passage between the exhaust gas inlet and the exhaust gas outlet;

a flap arranged in the valve body;

a shaft that drives the flap in rotation with respect to the valve body;

at least one guide bearing that guides the drive shaft of the flap for rotation relative to the valve body, the at least one guide bearing engaged through an orifice of the valve body, an inner end of the at least one guide bearing being located inside the valve body; and

a first tube, engaged in one of the exhaust gas inlet and exhaust gas outlet and abutting against the inner end of the at least one guide bearing.

2. The valve according to claim 1, wherein the exhaust gas circulation passage has a central line from the exhaust gas inlet to the exhaust gas outlet, the at least one guide bearing defining a position of the first tube with respect to the valve body along the central line.

3. The valve according to claim 1, including a second tube engaged in the other of the exhaust gas inlet and exhaust gas outlet and abutting against the inner end of the at least one guide bearing.

4. The valve according to claim 1, wherein the at least one guide bearing comprises a tubular casing and a member that guides the drive shaft housed in the tubular casing, the first tube being in abutment against the tubular casing.

5. The valve according to claim 1, wherein the first tube has a first end in which a notch surrounding the inner end of the at least one guide bearing is cut.

6. The valve according to claim 1, wherein the at least one guide bearing comprises a single guide bearing.

11. An exhaust line comprising a valve according to claim 1.

7. A method of manufacturing a valve for an exhaust line comprising:

obtaining a sub-assembly comprising;

a valve body having an exhaust gas inlet and an exhaust gas outlet, the valve body defining an exhaust gas circulation passage between the exhaust gas inlet and the exhaust gas outlet,

a flap arranged in the valve body,

a shaft that drives the flap in rotation with respect to the valve body, and

at least one guide bearing that guides the drive shaft and is engaged through an orifice of the valve body, wherein an inner end of the at least one guide bearing is located inside the valve body; and

engaging a first tube in one of the exhaust gas inlet and exhaust gas outlet and abutting the first tube against the inner end of the at least one guide bearing.

8. The method according to claim 7, including fixing the first tube to the valve body subsequent to engaging and abutting the first tube.

9. The method according to claim 7, including engaging a second tube in the other of the exhaust gas inlet and exhaust gas outlet and abutting the second tube against the inner end of the at least one guide bearing.

10. The method according to claim 9, including fixing the second tube to the valve body subsequent to engaging and abutting the second tube.