Brake control apparatus in diagonal braking hydraulic pressure supply system for use in motor vehicles
US4943123A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 7, 1988 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Oct 7, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/48
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a braking apparatus for use in a motor vehicle which supplies hydraulic pressure from a master cylinder to wheel braking cylinders for front-side and rear-side wheels, a braking force adjusting device is provided in common between the master cylinder and the front-side and rear-side wheel braking cylinders to adjust the hydraulic pressure to be applied to the front-side and rear-side wheel cylinders. A proportioning valve controls the hydraulic pressure to the rear-side wheel braking cylinder to become lower than the hydraulic pressure from the braking force adjusting device by a predetermined ratio. The proportioning valve is adapted to change the predetermined ratio in accordance with a control signal to prevent the rear-side wheel from locking. The control signal to the proportioning valve is determined on the basis of information representing an excessive degreee of braking force obtained in accordance with the states of the front-side and rear-side wheels during the braking operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.