Computer optimized adaptive suspension system having combined shock absorber/air spring unit
US4722548A · kind A · utility
Inventors
Key dates
| Filing date | Sep 29, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Sep 29, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2800/912
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle suspension system in which a computer controls damping and spring forces to optimize ride and handling characteristics under a wide range of driving conditions. A combined shock absorber/air spring unit is connected between the wheel and frame of a vehicle. The shock absorber includes a hydraulic sensor which provides signals to the computer which are representative of the position of the piston within the shock absorber. The computer utilizes these signals to control compression and rebound hydraulic pressure regulators to produce preprogrammed compression and rebound damping forces that will yield the desired ride and handling. The air spring may be connected in series with the shock absorber for compression and rebound along the same axis. Pressure sensors and air pressure inlet and outlet valves are connected to the computer for adjusting the pressure within the air spring to provide the desired spring rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.