Special control mode for one-solenoid valves
US6371573B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2000 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Jul 31, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/5006
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A braking system for a wheeled vehicle includes a pressurized air source (63), an air actuated wheel braking device (51, 59), an operator control (49, 61) for commanding the supply of air to the braking device, an electronic control (19) which responds to vehicle speed and wheel speed to selectively invoking an antilock mode of braking. A control valve (37, 55) responds to the electronic control (19) and the operator control (49, 61) to selectively control the supply of air from the source to the braking device. In the antilock mode, the control valve is initially enabled to release braking pressure and thereafter alternately enabled and disabled to maintain braking pressure at a substantially constant reduced pressure, and subsequently alternately enabled and disabled at a reduced ratio of enabled duration to disabled duration to rebuild braking pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.