Valve arrangement

Patent metadata

Field	Value
Publication number	US-10179579-B2
Application number	US-201515310806-A
Country	US
Kind code	B2
Filing date	May 22, 2015
Priority date	Jun 21, 2014
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

A valve arrangement for brake control of a vehicle braking system which is operated using pressure medium includes a relay valve arranged in a housing, and a solenoid valve configured for controlling the relay valve. The relay valve has an axially displaceable relay valve piston with a first annular sealing seat configured to be acted on with a control pressure which is directed into a control pressure chamber and which can be adjusted by the solenoid valve, having an axially displaceable plate valve having a radial sealing face, and having an insert secured to the housing which separates an operating chamber from a pressure chamber and which has a second annular sealing seat which is arranged coaxially relative to the first annular sealing seat of the relay valve piston. The first and second annular sealing seats cooperate simultaneously or alternately with the radial sealing face of the plate valve.

First claim

The invention claimed is:

1. A valve arrangement for brake control of a vehicle braking system which is operated using pressure medium, the valve arrangement comprising:
a relay valve arranged in a housing; and
a solenoid valve configured for controlling the relay valve;
wherein the relay valve has an axially displaceable relay valve piston with a first annular sealing seat configured to be acted on with a control pressure which is directed into a control pressure chamber and which can be adjusted by the solenoid valve, having an axially displaceable plate valve having a radial sealing face, and having an insert secured to the housing which separates an operating chamber from a pressure chamber and which has a second annular sealing seat which is arranged coaxially relative to the first annular sealing seat of the relay valve piston,
wherein the first and second annular sealing seats cooperate simultaneously or alternately with the radial sealing face of the plate valve in such a manner that, when control pressure is applied, a storage pressure from the pressure chamber reaches the operating chamber at the side of the relay valve piston which is remote from the control pressure chamber, and, when the control pressure is relieved, the pressure in the operating chamber is returned to a pressure medium container or is vented to the environment,
wherein the housing has at least one cylindrical receiving member which is closed at one side and which forms the control pressure chamber, the operating chamber, and the pressure chamber for arrangement of the relay valve piston, the insert which is secured to the housing and a carrier element for the plate valve which can be axially introduced into the at least one cylindrical receiving member in the sequence mentioned and fixed therein.

2. The valve arrangement according to claim 1 , wherein the solenoid valve is arranged on the housing at the closed side of the at least one cylindrical receiving member, and
wherein channels between the solenoid valve and the relay valve, between the solenoid valve and a connection for storage pressure, and between the at solenoid valve and a pressure relief region extend in the housing in a substantially axially parallel manner or perpendicularly relative to a longitudinal axis of the cylindrical receiving member.

3. The valve arrangement according to claim 1 , wherein the solenoid valve and the relay valve have separate channels for the application of control pressure and the relief of control pressure.

4. The valve arrangement according to claim 1 , wherein the at least one cylindrical receiving member is closed by a sieve plate.

5. The valve arrangement according to claim 4 , wherein the sieve plate is screwed to the housing.

6. The valve arrangement according to claim 4 , wherein the sieve plate is inserted transversely relative to the receiving member into a slot in the housing.

7. The valve arrangement according to claim 6 , wherein the sieve plate is fixed in the slot by means of at least one fixing screw.

8. The valve arrangement according to claim 6 , wherein the sieve plate has a catch projection which engages behind a slot delimitation in the inserted state of the sieve plate.

9. The valve arrangement according to claim 1 , wherein the carrier element has a receiving space for a noise damper.

10. The valve arrangement according to claim 1 , wherein the at least one cylindrical receiving member of the housing with the inserted relay valve piston, the insert, and the carrier element is closed by a noise damper which can be releasably connected to the housing of the valve arrangement.

11. A utility vehicle, comprising at least one valve arrangement according to claim 1 .

12. A method of using at least one valve arrangement according to claim 1 which is constructed as an axle modulator or an electronic air preparation device or an electromagnetic parking brake device in a compressed air system of a vehicle.

Assignees

• Wabco Gmbh

Inventors

• Didwiszus Lars
• Schappler Hartmut
• Steinfeld Dieter

Classifications

• B60T15/54 Primary

  for controlling exhaust from triple valve or from brake cylinder · CPC title

• B60T15/18 Primary

  Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere · CPC title

• B60T15/027

  in pneumatic systems · CPC title

• B60T13/683 Primary

  in pneumatic systems or parts thereof (in vacuum systems B60T13/72) · CPC title