Brake system with hydraulic brake booster and corresponding method
US6557951B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2001 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Oct 22, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/221
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake system with hydraulic brake boosting has a hydraulic actuating unit which comprises a hydraulic reservoir, a brake pedal, a brake-pressure generator and a pedal-travel simulator, a hydraulic unit comprising a pressure generator, a hydraulic wheel-brake device and a control unit for coordinating the functions of the actuating unit, of the hydraulic unit and of the wheel-brake device. The pedal-travel simulator possesses a variable displacement volume which is connected to the hydraulic reservoir via a hydraulic line.In order to design electrohydraulic brakes by simple means so as to be more fail-safe, a return line is provided between the wheel-brake device and the displacement volume of the pedal-travel simulator. Moreover, there is arranged in the hydraulic line, between the hydraulic reservoir and the displacement volume of the pedal-travel simulator, a return-flow valve which in the event of a fault, with the brake system defective, can be shifted into a shut-off position blocking the hydraulic line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.