Brake system for automotive vehicles
US4828337A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Dec 1, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/57
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake system for automotive vehicles is disclosed comprising a vacuum brake force booster operatively located between a brake pedal and a master brake cylinder. The vacuum brake force booster includes at least two working chambers separated from one another by a membrane plate, one of the working chambers, through a master magnetic valve, being in communication with a vacuum source and the other working chamber being vented through a control valve acutable by the brake pedal to generate a brake force proportional to the brake pedal force. Connected to the master brake cylinder are brake circuits applying pressure to the wheel brake cylinders. Sensors associated with the wheels detect the rotational behavior of the wheels to identify a locking condition. Output signals are applied to a central electronic regulator supplying, in response to the signals, at least one switch-over signal to the master magnetic valve so that the working chamber in communication with the vacuum source may be connected to atmosphere rather than to the vacuum source. Provided in the vacuum brake force booster is an auxiliary membrane plate fixed to a guide sleeve, separating an additional working chamber …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.