Vehicle Braking Assembly

• US 20200130668A1
• Filed: 12/23/2019
• Published: 04/30/2020
• Est. Priority Date: 11/12/2015
• Status: Active Grant

• Current Assignee: Faiveley Transport Italia Spa (Westinghouse Air Brake Technologies Corporation)
• Original Assignee: Faiveley Transport Italia Spa (Westinghouse Air Brake Technologies Corporation)
• Inventors: Tione, Roberto, Cavazzin, Andrea, Grasso, Angelo
• Granted Patent: US 11,498,541 B2
• Time in Patent Office: Days
• CPC Class Codes: B60T 13/665 the systems being specially adapted for transferring two or more command signals, e.g. railway systems B60T13/662 takes precedence
• CPC Class Codes: B60T 13/683 in pneumatic systems or parts thereof in vacuum systems B60T13/72
• CPC Class Codes: B60T 15/021 Railway control or brake valves
• CPC Class Codes: B60T 15/027 in pneumatic systems
• CPC Class Codes: B60T 17/228 for railway vehicles
• CPC Class Codes: B60T 2201/06 Hill holder; Start aid systems on inclined road
• CPC Class Codes: B60T 2201/10 Automatic or semi-automatic parking aid systems
• CPC Class Codes: B60T 7/122 for locking of reverse movement
• CPC Class Codes: B60T 8/1893 especially adapted for railway vehicles

Abstract

The assembly comprises a body wherein there are defined a chamber, a supply valve adapted to connect the chamber to a pressure source or to the atmosphere, and a vent valve adapted to allow or prevent the connection of the chamber to the atmosphere. The valves are provided with control solenoids to which respective electronic switches are coupled. The assembly also comprises electronic control devices adapted to provide, as a function of the values of at least one input signal, logic control signals to the electronic switches so as to control, through the valves, the value of the pressure in the chamber. The control means comprise two processing and control devices independent of one another, both receiving the input signal and designed to execute strategies for controlling the pressure in the chamber, equivalent to one another.

Claims

1. An assembly comprising:

a supply valve configured to be disposed between a chamber and a pressure source;

a discharge valve disposed between the chamber and an external atmosphere;

a first control unit coupled with the supply valve by a first switch and with the discharge valve by a second switch, the first control unit configured to output signals to the first switch and the second switch to control the supply valve and the discharge valve; and

a second control unit coupled with the discharge valve by a third switch and a fourth switch, the second control unit configured to output signals to the third switch and the fourth switch to control the supply valve and the discharge valve.

2. The assembly of claim 1, wherein the supply valve and the discharge valve are configured to increase a pressure in the chamber responsive to the signals from the first control unit conflicting with the signals from the second control unit.

3. The assembly of claim 1, wherein the supply valve and the discharge valve are configured to decrease a pressure in the chamber responsive to the signals from the first control unit conflicting with the signals from the second control unit.

4. The assembly of claim 1, wherein the supply valve and the discharge valve are configured to increase a pressure in the chamber responsive to the signals from the first control unit matching the signals from the second control unit.

5. The assembly of claim 1, wherein the supply valve and the discharge valve are configured to decrease a pressure in the chamber responsive to the signals from the first control unit matching the signals from the second control unit.

6. The assembly of claim 1, wherein the supply valve and the discharge valve are coupled with each other in a series.

7. The assembly of claim 6, wherein the supply valve and the discharge valve are configured to be coupled with the chamber with the chamber between the supply valve and the discharge valve.

8. An assembly comprising:

a first control unit coupled with a supply valve by a first switch and with a discharge valve by a second switch, the first control unit configured to output signals to the first switch and the second switch to control the supply valve and the discharge valve to control a pressure inside a chamber; and

a second control unit coupled with the discharge valve by a third switch and a fourth switch, the second control unit configured to output signals to the third switch and the fourth switch to control the supply valve and the discharge valve,

wherein the first control unit and the second control unit are configured to output the signals such that the supply valve and the discharge valve open or close based on whether the signals from the first control unit match or conflict with the signals from the second control unit.

9. The assembly of claim 8, wherein the first control unit and the second control unit are configured to control the supply valve and the discharge valve to increase a pressure in the chamber responsive to the signals from the first control unit conflicting with the signals from the second control unit.

10. The assembly of claim 8, wherein the first control unit and the second control unit are configured to control the supply valve and the discharge valve to decrease a pressure in the chamber responsive to the signals from the first control unit conflicting with the signals from the second control unit.

11. The assembly of claim 8, wherein the first control unit and the second control unit are configured to control the supply valve and the discharge valve to increase a pressure in the chamber responsive to the signals from the first control unit matching the signals from the second control unit.

12. The assembly of claim 8, wherein the first control unit and the second control unit are configured to control the supply valve and the discharge valve to decrease a pressure in the chamber responsive to the signals from the first control unit matching the signals from the second control unit.

13. An assembly comprising:

a supply valve and a discharge valve coupled in series with each other between a pressure source and an external atmosphere, the supply valve and the discharge valve configured to be coupled with a chamber that is pressurized by the pressure source;

a first control unit coupled with the supply valve by a first switch and with the discharge valve by a second switch, the first control unit configured to output signals to the first switch and the second switch to control the supply valve and the discharge valve; and

a second control unit coupled with the discharge valve by a third switch and a fourth switch, the second control unit configured to output signals to the third switch and the fourth switch to control the supply valve and the discharge valve.

14. The assembly of claim 13, wherein the supply valve and the discharge valve are configured to increase a pressure in the chamber responsive to the signals from the first control unit conflicting with the signals from the second control unit.

15. The assembly of claim 13, wherein the supply valve and the discharge valve are configured to decrease a pressure in the chamber responsive to the signals from the first control unit conflicting with the signals from the second control unit.

16. The assembly of claim 13, wherein the supply valve and the discharge valve are configured to increase a pressure in the chamber responsive to the signals from the first control unit matching the signals from the second control unit.

17. The assembly of claim 13, wherein the supply valve and the discharge valve are configured to decrease a pressure in the chamber responsive to the signals from the first control unit matching the signals from the second control unit.

18. The assembly of claim 13, wherein the supply valve and the discharge valve are coupled with each other and with the chamber with the chamber disposed between the supply valve and the discharge valve.

19. The assembly of claim 13, wherein the supply valve is a solenoid valve.

20. The assembly of claim 19, wherein the discharge valve is another solenoid valve.