The paper is concerned with the development of a semi-active hydropneumatic spring and damper system, comprising of a two state hydropneumatic spring and a two state hydraulic damper. The system was specifically developed to improve the ride comfort and handling of large off-road vehicles. The suspension requirements for good ride comfort and handling for heavy off-road vehicles are discussed with special reference to the advantages of semi-active hydropneumatic springs and semi-active dampers. The layout and functioning of an experimental spring and damper unit used for laboratory tests are discussed. Spring and damper characteristics, as well as valve response times for both the semi-active spring and semi-active damper were determined. A single degree of freedom test rig with a sprung mass of 3 tons was used to perform first order ride comfort tests. Tests include step response and random input response. The test rig was also used to evaluate semi-active control strategies for both spring and damper as well as a control strategy for implementing ride height adjustement without using an external hydraulic pump.
Semi-active hydropneumatic spring and damper system
Semiaktives hydropneumatisches Feder-Dämpfer-System
Journal of Terramechanics ; 35 , 2 ; 109-117
1998
9 Seiten, 8 Bilder, 2 Quellen
Article (Journal)
English
Semi-active hydropneumatic spring and damper system
Automotive engineering | 1997
|Semi-active hydropneumatic spring and damper system
Automotive engineering | 1998
|Semi-Active Hydropneumatic Spring and Damper System
British Library Conference Proceedings | 1997
|Modelling of a semi-active hydropneumatic spring-damper system
Automotive engineering | 2003
|Modelling of a semi-active hydropneumatic spring-damper unit
Automotive engineering | 2007
|