ZF Friedrichshafen AG has entered into a volume production for their adaptive damping system CDC 1XL for the first time in the new Honda Civic Tourer. ZF’s other continuous damping controls (CDC) for both axles suffice the requirements of subcompact and compact cars, as well as MUVs. Fully loaded, the weight of such vehicles is distributed much more towards the rear axle. In this situation, conventional, passive rear axle dampers always select a rigid damping characteristic curve that is adapted to the full permitted load which detrimentally affects comfort when the vehicle is partly loaded. Applied to the rear axle, ZF’s CDC 1XL is an electronically controlled adaptive damping system which minimizes the effects of large rear axle load fluctuations. A control unit analyzes the data on road condition, payload, vehicle speed, and drivability collected by the integrated sensor system and optimally adjusts the characteristic curve within milliseconds. This is made possible by electronically controlled proportional valves which minimize oil flow in the damper tube (for hard damping characteristics) or expand the diameter once again (for soft suspension). The CDC 1XL identifies critical driving situations and adapts damping accordingly with the help of the linking of sensor systems, control software, and control technology.
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