Daimler Chrysler Ag

Other

Mercedes-benz Aktiengesellschaft

Martin Winkler

Bernd Acker

Hans-Peter Klander

Darko Meljnikov

Gerhard Thurow

Christoph Bank

Karl-Heinz Roess

Paul Cerny

Matthias Roemer

Matthias R&ouml;mer

Ruediger Rutz

Peter G&ouml;nnheimer

Karl-Heinz R&ouml;ss

Guenter Nagel

Peter Goennheimer

R&uuml;diger Rutz

Rudiger Rutz

A combined spring/damper system for the support of wheel suspensions or axles on a vehicle body, with a tubular concertina which is mounted between an outer bell and a rolling piston and the meniscus of which is guided on a cylindrical inner-wall region of the outer bell and a cylindrical outer-wall region of the rolling piston. The outer bell or the rolling piston of the displacer is supported between the vehicle body and the chassis in at least one articulated support. The concertina space is filled with a fluid and communicates with a hydraulic accumulator mounted on the chassis side or on the vehicle-body side. Thus, a combined spring/damper system is provided, which includes a low-friction and virtually maintenance-free displacer.

Spring-shock absorbing system with tubular rolled bellows

A combined spring-and-shock-absorber system for supporting wheel suspensions or axles on a vehicle body has a tubular roll bellows (U-bellows) arranged between a wheel-bearing or wheel-controlling connection and a connection on the vehicle body side, the bellows being arranged between an outer bell and a rolling piston, the outer bell and the rolling piston, in each case, having at least partially varying diameters over the height of the corresponding component, and having walls that contact the tubular roll bellows. Both ends of the tubular roll bellows being sealingly secured on the rolling piston at segments having different diameters, the lower mounting section having a larger diameter than the upper mounting section. For this purpose, a tubular roll bellows is used, which is configured as a differential roll bellows, whose interior is filled with a fluid and communicates with a hydraulic accumulator supported on the chassis and/or vehicle body. On the basis of the present invention, a combined spring-and-shock-absorber system is developed, which contains a friction-free displacement device in a thin construction.

Spring-and-shock absorber system having differential roll bellows

An active chassis in a motor vehicle has a controllable suspension system which includes passive spring elements between a wheel of the vehicle and a body of the vehicle as well as supporting units which are provided for the spring elements and can be adjusted by a control signal. Transducers are provided for the supporting units to detect state variables of the supporting units. In addition, a control unit is provided to generate the control signal from a setpoint signal which can be preselected via an input element and an actual signal which is determined from the detected state variables. To provide an easily implemented method of controlling the roll moment distribution between front and rear axles of the vehicle, the roll moment distribution to be set between the front and rear axles of the vehicle can be preselected as the setpoint signal in the input element. In addition, an actual signal representing the actual roll moment distribution can be determined in the control unit as a function of the state variables of the supporting units.

Active chassis in a motor vehicle

An active suspension system, in particular for motor vehicles, is provided whose suspension or support units arranged between the sprung and the unsprung mass have, in each case, a passive, uncontrolled spring element and, arranged in series with the latter, a hydraulic displacer unit with controllable adjustment. The arrangement of displacement pick-ups, which reproduce the stroke position of the sprung mass relative to the unsprung mass and the stroke of the displacer unit, allows for carrying out a regulation of the current supporting forces by a required/actual value comparison which uses only the displacement measurements.

Active suspension system

Growing community of inventors

Schwaikheim, Germany

Martin Winkler