Anti-lock brake system with traction slip control
US4826258A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1987 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Oct 8, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/4827
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An anti-lock brake system with traction slip control is disclosed. The system is the type including a pedal activated, auxilary force assisted braking pressure generator having two brake circuits. Each circuit supplies electromechanical valves controlled by an electronic controller in response to wheel behavior to increase and decrease brake pressure so as to control brake action and prevent wheel lock up. A normally closed valve is provided in at least one of two supply lines from an auxiliary pump and accumulator to the wheel brake inlet valve for controlling traction slip. A portion of the supply line which interconnects the pump and the valve communicates with one of the two main brake lines through a short-circuit line including a pressure relief valve. The pressure relief valve permits delivery of pressure fluid into the main brake line above a nominal pressure and prevents flow in the opposite direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.