Hydraulic pressure control device for vehicle and vehicle brake system using the same
US6652041B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 18, 2002 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Jan 18, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/4827
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic pressure control device is proposed in which using a proportional pressure control valve having a built-in spool valve, the hydraulic pressure for wheel brakes is adjusted to a value corresponding to the magnitude of an external force applied to the spool valve, non-electrical pressure adjustment can be done both in a normal state and in an emergency, and the structure is simplified. The brake pedal is coupled through a spring to the spool valve of the proportional pressure control valve having a solenoid for generating a spool-driving force, and the brake pedal force is applied to the spool valve as an external force so that not only in an emergency but in a normal state, pressure is adjusted by the brake pedal force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.