To provide the user with the full extent of comfort and safety, electric seat adjustment axes are a basic necessity. In addition to the usual fore-and-aft, seat height, backrest angle and headrest height adjustments, it is also possible to electrically adjust the seat angle, seat length, backrest width, upper backrest angle, and even the footrest. The seat is moved manually into the desired position by pressing the corresponding operating controls – either conventional switches or a modern human-machine interface.

With the aid of specially designed positioning logic, it is possible to save user-defined seat positions and to recall them again later. This logic can be implemented either electrically with corresponding sensors, or algorithmically as Sensorless Positioning (SLP). In addition to simple position saving, there is also the possibility of saving to key memory. Here the driver's seat position is saved and then automatically set when the vehicle is unlocked with the remote key or when the door is opened. For coupes with limited space in the interior, a special feature is available for easy vehicle entry and exit. The seat in front is temporarily moved into a position that gives the user more room. For this function, a high-speed motor for fore-and-aft adjustment is often installed. To ensure safety even with automatic seat adjustment, we offer an anti-pinch feature for the main adjustment axes, which stops automatically and reverses when it detects an obstacle.

The individual air cells in the seat are inflated and deflated through valves. Pressure sensors detect the level of inflation at all times, thus enabling memory and control functions that are required for automatic compensation of fluctuations in exterior pressure, such as when driving up and down hills.

The core element of our Pneumatic Seat System is the electronic module, which is responsible for the control of the complete system and its functions. Integrated in the module are also all the necessary components for the pneumatic control like the valves, the pressure distribution unit and the pressure sensors. In addition, we provide the necessary air supply, the matching seat substructure, consisting of a wire frame, felt mats, and air cells, along with the air hoses to connect them. Furthermore, for the drive dynamic function, pneumatically activated flaps are required to reinforce the seat side bolsters for the driver and the passenger seat.

• Our Pneumatic Seat Systems with many added functions are especially comfortable and offer clear technical advantages.
• The multi-contour seat function allows vehicle occupants to adapt the contour of the seat to their individual requirements.
• Via air cells integrated into the backrest and seat cushion the seat adjusts to fit the body.
• The optional massage function further enhances comfort for vehicle occupants on long journeys by means of alternate inflation and deflation of the air cells.
• The drive dynamic function automatically adapts the side bolsters of the seat to the current driving situation, ensuring optimum stability for occupants at all times, even when cornering.
• The advantages of a comfort seat are thus combined with those of a sports car seat.
• Compared with electromechanical systems, pneumatic seat systems operate more quietly and weigh significantly less.
• Furthermore, they also allow more precise adaptation to the body shape and can withstand greater mechanical stress.