Brake signal transmitter with integrated addition redundancy
US6354671B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 1999 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Nov 11, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/327
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake signal transmitter for an electronic braking system produces an electrical braking requirement signal as well as a mechanically produced pneumatic braking pressure. The electronic braking requirement signal is evaluated, together with other measured magnitudes which define the travel state, in an electronic vehicle control system, and a braking pressure is produced as a function of this evaluation by a braking pressure modulator. Following the principle of addition redundancy, the pressure produced mechanically by the brake signal transmitter is added to the pressure produced electrically by the brake modulator and the total pressure represents the braking pressure acting on the brake cylinders. In the event of failure of the electronic system, the mechanically produced pressure automatically becomes active as the braking pressure, and functions as the redundancy pressure. An addition device is provided within the brake signal transmitter itself, in which the pressure produced mechanically by the brake signal transmitter and the pressure produced electrically by the brake signal transmitter are added together. The electric braking pressure modulator may be part of the brake…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.