Control unit for a wheel brake of a motor vehicle
US7000997B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 2000 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Dec 18, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T15/52
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An actuating unit (1) for a wheel brake (2) of a motor vehicle has a hydraulic pump (14) that can be driven at variable speeds by an electric motor (13). In addition, a cylinder-piston unit (3) is provided, with a piston (6) and with cylinder chambers (7, 8) disposed on both sides of the piston. By means of the cylinder-piston unit (3), a brake lining (9) can be pressed against and lifted away from a friction element (10) connected to a vehicle wheel. A 4/3-port directional-control valve (15) is provided between the pump (14) and the cylinder-piston unit (3) and is used to modulate the pressure in the cylinder-piston unit. The actuating unit (1) is associated with a control unit (29), which can process an electric brake request signal and can control the electric motor (13) and the valve (15).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.