Over 160 million vehicles worldwide are now equipped with the patented Litens Overrunning Alternator De-coupler (OAD). By 2022 the vehicle population using a Litens OAD will increase up to almost 220 million.

The fluctuating rotational speeds of the crankshaft cause tension peaks. These are transferred to the whole accessory drive and its component by the Poly V belt. The industry trend continuing with larger alternators and smaller engines is increasing this problem. This includes belt slip, belt wear, component bearing durability and NVH. It is only the Litens OAD which provides the isolation required to solve the new challenges.

Just like an Overrunning Alternator Pulley (OAP, OWC) the Litens Overrunning Alternator Pulley (OAD) has an overrunning feature. Additionally the Litens OAD has a patented steel torsion spring inside. This spring is vehicle and application specific and is tuned to effectively absorb the torsional vibrations. The dynamic forces within the belt drive system are therefore dramatically reduced and the belt tensioner as well as the entire system's durability is greatly increased.

By using this patented system the noise, vibration and harshness in the accessory drive a reduced to a minimum. This also results in a higher driving comfort and increased lifetime of all components in the belt drive. Furthermore the fuel consumption can be reduced by using the Overruning Alternator Decoupler (OAD).