Electronically controlled pneumatic (ECP) overlay control valve
US11548491B2 · kind B2 · utility
0Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2019 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Apr 12, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/228
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electronically controlled pneumatic (ECP) overlay control valve can selective switch between a conventional pneumatic mode and an ECP mode. In ECP mode, the overlay control valve shunts the brake cylinder pressure of the pneumatic control valve which allows a relay valve to build or exhaust pressure in the brake cylinder in response to an electronically controlled apply/release circuit. In conventional pneumatic mode, the overlay control valve disconnects the relay valve and allows a conventional pneumatic control valve to control the pressurization and exhausting of the brake cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.