Electric power assisted steering (EPS/EPAS) or motor-driven power steering (MDPS) uses an electric motor to assist the driver of a vehicle.  Sensors detect the position and torque of the steering column, and a computer module applies assistive torque via the motor, which connects to either the steering gear or steering column. This allows varying amounts of assistance to be applied depending on driving conditions.

Clavis measures the belt tension on all EPAS units produced by the four volume manufacturers, TRW, Nexteer (Delphi), SKF and Hitachi.

Front-End Auxiliary Drive (FEAD) or accessory drive systems in motor vehicles are used to drive auxiliary equipment, such as alternator, coolant pump, power steering pump or A/C compressor.

Accessories are driven by a poly V-belt or Serpentine belt, the tension of which is precisely adjusted to the required loads using a mechanical or hydraulic tensioning system. Guide pullies are used to create the required wrap angle around the front-end accessories. Poly V-belts are designed to perform at high loads transmitting the engine torque – up to 350 Nm is not unusual in modern cars, without slip from the crankshaft to all its accessories.

Most transport refrigeration units are attached to trailers to control the temperature of their cargo. Freshness and quality of the goods inside the trailer needs to be retained. Clavis measures the belt tension for the engine that drives the compressor and other important features in order for this to be achieved.