Road vehicle brake-pressure control device
US5350225A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1993 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Mar 17, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a brake-pressure control device for a road vehicle, having an antilock braking system whose braking device comprises a vacuum brake power assist unit which has a vacuum chamber connected to the intake stub of the vehicle engine and a working chamber which can be subjected to a higher pressure via a control element operable by the brake pedal, a position sensor is provided which detects the position of the brake pedal and generates output signals. An electronic control unit processes these signals and generates drive signals for a brake-pressure control device making it possible to couple into the wheel brakes a higher brake pressure than would otherwise correspond to the instantaneous pedal position. Such driving of the brake-pressure control device is triggered when the speed .PHI. at which the brake pedal is operated overshoots a prescribed threshold value .PHI..sub.s. The brake power assist unit is provided with a solenoid valve arrangement which can be moved from a basic position in which pressure compensation can be performed between the vacuum chamber and the working chamber of the brake power assist unit, whereas the working chamber thereof can be connected only via the c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.