Vehicle suspension device
US5678846A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1995 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Oct 20, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2600/182
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention provides a vehicle suspension device comprising an actuator (10) having a piston (11) and a plurality of chambers (A and B), a source of pressurized fluid (21), an exhaust for pressurized fluid (24), a first sensor (34) senses the force applied to the actuator (10), a second sensor (35) senses the pressure of the fluid supplied by the source of pressurized fluid (21) and a controller (23,27) controls the extension of the actuator (10) by controlling the flow of fluid to and from at least one of the chambers (A, B), the controller (27) receives signals from the first (34) and second (35) sensors and controls the actuator accordingly. The controller (23,27) connects the chamber (A) to the source of pressurized fluid (21) when the controller (27) determines that a force applied to the actuator is a) greater than the force that can be applied to the piston (11) by the greatest achievable difference in pressures acting on the surfaces thereof, b) acting to expel fluid from the chamber (A) and c) acting to assist the piston (11) in attaining the velocity required by the controller (27).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.