Our engines for drilling equipment and underground construction machines such as wheel loaders and other loading and transport vehicles are specially optimized in terms of emissions for underground use. The most modern injection methods and combustion processes optimized to the smallest detail provide for first-rate exhaust values that do not unnecessarily tax underground ventilation systems. MTU diesel engines from the Series 900 or S60 conform to the strict US underground 30 CFR Part 7 regulations,amongst others, thanks to common-rail injection systems, as well as exhaust gas recirculation (AGR) and SCR exhaust gas post treatment. Nevertheless, this does not affect the performance: Our engines for underground vehicles are specially designed for tough, 24/7 use and develop enormous amounts of torque from low engine speeds – regardless of temperature, dust or moisture.