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The Raisable Roll-Over Bar of the New Mercedes-Benz Roadster
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 01, 1990 by SAE International in United States
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The new SL from Mercedes-Benz was conceived as a pure-bred roadster, i.e. without a fixed roll-over bar which would mar the looks of this open sports car and moreover emphasize the added risk of injury in the event of a roll-over accident. At the same time, the aim was to further enhance occupant safety in the event of such a roll-over. These aims led to the designing of a completely new kind of passive protection system which comes into operation automatically if a roll-over is imminent.
Between the rear seats and the soft-top recess, a roll-over bar was therefore integrated; this is mounted on a pivot system and does not affect the apearance of the car when lowered.
A sensor system, which is also new, registers driving situations which could result in a roll-over. As a consequence of this, the roll-over bar is raised via a spring/damper mechanism and locked into position.
CitationBaumann, K. and Wünsche, M., "The Raisable Roll-Over Bar of the New Mercedes-Benz Roadster," SAE Technical Paper 901124, 1990, https://doi.org/10.4271/901124.
- Huber G., Götz H., Schwede W., Heiss W. and Brambilla L.: “Der neue Mercedes-Benz Roadster - Karosserie: Passive Sicherheit.” ATZ 91 (1989) 5, P. 227-235.
- Baumann K-H., Matthias K. and A. Bossenmaier: “Die Entwicklung eines beweglichen Überrollbügels für den neuen Mercedes-Benz Roadster.” Automobil Industrie (1989)
- Bossenmaier A., Brambilla L.: “Multifunktionales Überrollbügel- Steuergerät, ” VDI Bericht No. 780, 1989