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PDS (Porsche Dynamic Slip Control Clutch)-A New Inter-Axle Coupling Device for 4WD-Cars
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Abstract
The PDS (Porsche Dynamic Slip-Control) is a new coupling system designed specifically for the conversion of FWD vehicles into 4WD.
It was designed by PORSCHE working under a contract from UNI-CARDAN, a big European manufacturer of driveline components. The system is very suitable for mid-size cars with front/transverse engine location. Requiring no inter-axle differential, only a hang-on power-take-off from the front axle differential housing or gearbox is necessary.
Although it is a relatively simple system, the PDS offers the traction and acceleration capability of a center-differential outfit. Improvements were found in cornering stability and starting under adverse road conditions.
The report includes description of function, test-results of the pre-development phase, calculations of the vehicle handling characteristics and gives an overview of the further development potential of this 4WD system.
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Citation
Müller, R. and Witte, L., "PDS (Porsche Dynamic Slip Control Clutch)-A New Inter-Axle Coupling Device for 4WD-Cars," SAE Technical Paper 880698, 1988, https://doi.org/10.4271/880698.Also In
References
- Möllers W. Dr. Müller R.
- Richter B. Maretzke J. Traction and Directional control of 4WD Passenger Cars International Conference on All Wheel Drive IMechE 1986
- Flegl H. Földi Th. Ruf G. 1981