A highly efficient airflow system with the product name SDR is available now from JOST. The SDR roof diffusor is an aerodynamic airflow system which reduces the decelerating air turbulences at the rear of the vehicle by more than 50%. This results in fuel savings of up to 4%, which was confirmed by extensive field tests of vehicle manufacturers and transport companies.
JOST SDR has a positive effect in reducing air turbulence at the rear of the vehicle. The air flowing over the roof is directed through the turbulent zone by the JOST SDR diffusor, significantly reducing the drag effect caused by the turbulent air. This creates less air swirl and air resistance and thus results in substantial fuel savings of up to 4%. Thanks to this, acquisition costs of the SDR roof diffusor pay for themselves after only a few months.
Besides the remarkable savings on consumption, it also reduces the respective CO₂ emissions and protects the environment. Two more benefits of JOST's SDR roof diffusor resulting from the low air turbulence behind the vehicle are most noticeable during bad weather: The rear of the vehicle remains cleaner and the view, e.g. in rainy conditions, for following vehicles is improved, as less spray mist develops behind the vehicle.
Installing the JOST SDR roof diffuser is very simple. The SDR can easily be installed on the rear end of a truck body, trailer or semi-trailer – of course ret-roactive installation is also possible. After installation, the SDR roof diffuser is completely maintenance-free. The SDR is now part of JOST's range of prod-ucts and can be obtained through the JOST worldwide marketing network.