Valve for exhaust line

Patent metadata

Field	Value
Publication number	US-2019323611-A1
Application number	US-201916386370-A
Country	US
Kind code	A1
Filing date	Apr 17, 2019
Priority date	Apr 24, 2018
Publication date	Oct 24, 2019
Grant date	—

Abstract

A valve comprises a valve body delimiting a passage for exhaust gases, a flap arranged in the valve body, and a drive shaft configured to drive the flap, and which is integrally secured to the flap. At least one guide bearing is configured to guide the drive shaft of the flap in rotation in relation to the valve body, and is connected to the valve body. The valve also includes an actuator and a transmission comprising an adapter rigidly attached directly to the drive shaft of the flap. The transmission is arranged in order to transmit a motor torque between the actuator and the adapter. The adapter has a contact surface that is in sealed contact with a complementary surface provided on the guide bearing.

First claim

1 . A valve for an exhaust line, the valve comprising
a valve body delimiting a passage for the exhaust gases; a flap arranged in the valve body; a drive shaft configured to drive the flap and being integrally secured to the flap; at least one guide bearing configured to guide the drive shaft of the flap in rotation in relation to the valve body, wherein the at least one guide bearing is connected to the valve body; an actuator; a transmission comprising an adapter rigidly attached directly to the drive shaft of the flap, the transmission being arranged to transmit a motor torque between the actuator and the adapter; and the adapter having a contact surface that is in sealed contact with a complementary surface provided on the at least one guide bearing.

2 . A valve according to claim 1 , in which the contact surface is spherical, with the complementary surface being conical.

3 . A valve according to claim 1 , in which the adapter is rigidly attached to one end of the drive shaft for the flap.

4 . A valve according to claim 1 , in which the adapter is a plate.

5 . A valve according to claim 1 , in which the adapter includes a convex central zone defining the contact surface and having an orifice through which the drive shaft passes.

6 . A valve according to claim 5 , in which the adapter includes a skirt that is integrally secured to the convex central zone and surrounds the at least one guide bearing.

7 . A valve according to claim 1 , in which the transmission comprises a driving member that is driven in rotation by the actuator and a resilient member that couples the adapter and the driving member in rotation.

8 . A valve according to claim 7 , in which the resilient member biases the contact surface of the adapter against the complementary surface of the at least one guide bearing.

9 . A valve according to claim 1 , in which the guide bearing comprises a mesh of metal wires and/or comprises a material selected from graphite and ceramic, or any combination of such material or materials with a mesh of metal wires.

10 . A valve according to claim 1 , including a tubular casing in which the at least one guide bearing is housed, the tubular casing being engaged through an orifice in the valve body and rigidly attached to the valve body.

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

Assignees

• Faurecia Systemes Dechappement

Inventors

• Botella Ronan
• Cambillard Julien
• De Matos Raphaël
• Halepovic Alen
• Guerlesquin Gaël

Classifications

• F16K1/221 Primary

  specially adapted operating means therefor (operating means per se F16K31/00) · CPC title

• F02D9/106

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

• F02D9/04 Primary

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

• F02M26/70

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

• F16K1/224

  Details of bearings for the axis of rotation · CPC title