Secondary brake system of a vehicle, and method for controlling it
US11970146B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2021 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | May 3, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T15/028
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to an electronically controllable secondary brake system (46), operated by pressure medium, useable as both as a parking brake system and an auxiliary brake system, with spring brake cylinders (68a, 68b) arranged on wheel brakes of at least one vehicle axle (8), with a directly or indirectly electronically controllable brake control valve (56). The brake force of the spring brake cylinder (68a, 68b) can be reduced by a feed of pressure medium and can be increased by a discharge of pressure medium, and with an electronic brake control unit (48) for controlling the brake control valve (56) dependent on the current value of a brake value signal (SBW). The brake control valve (56) is configured as a 3/3-way proportional valve with a pressure medium inlet, a pressure medium outlet, and a working connector, which is connected via a working line (60, 66) to the spring brake cylinders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.