Roll control actuator with rotary mechanism
US7360771B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2005 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Jul 13, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2202/442
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A roll control actuator for a stabilizer bar includes an outer housing that is fixed to a first bar portion and a paddle member that is fixed to a second bar portion. The roll control actuator includes multiple fluid chambers with different fluid volumes. A control is used to selectively adjust roll stiffness of the stabilizer bar and includes a control valve in fluid communication with an accumulator. The first and second stabilizer bars can rotate relative to each other when the control valve is open to decrease roll stiffness and provide good ride quality. When the control valve is open, fluid flows freely between the fluid chambers. The first and second bar portions are hydraulically locked together when the control valve is closed to increase roll stiffness during cornering maneuvers. When the control valve is closed, the accumulator is isolated from the roll control actuator and fluid flow through the fluid chambers cannot occur due to differing fluid volumes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.