Method for decreasing a prevailing brake pressure in a brake circuit of an electronically slip-controllable power braking system and electronically slip-controllable power braking system
US11046292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2019 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Sep 30, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2270/406
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for decreasing brake-pressure of an electronically slip-controllable power braking system (ESPBS) and an ESPBS. The wheel-brake pressure is generated by electronic activation of a drive motor (DM) of a pressure generator (PG) (external force). The driver indicates braking intention by actuating a master brake cylinder, which is set indirectly by a control unit via electronic activation of the DM. Plunger devices (PDs) include a plunger piston (PP), accommodated moveably in a plunger cylinder (PC). Driven by the DM, PP and PC execute a translational movement in relation to one another. A pressure buildup/decrease is performable in a BC connected to the PD as a function of movement direction. To avoid pressure medium contaminated with gas entering the BC undetected during pressure decrease after cancellation of the intention, actuation of the PD in the pressure-decrease direction is performed until the BC pressure has dropped to a pre-determinable threshold and ended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.