Heavy-duty engine blender

Researchers at Southwest Research Institute and Navistar who explored the feasibility of micro-pilot diesel-injection dual-fuel combustion at key part load conditions found it offers ultra-low smoke and NOx emissions while maintaining diesel-comparable fuel consumption and noise levels.

Diesel engine emissions regulations in the U.S. have become exponentially more stringent since the year 2002, and the most stringent ever U.S. on-road heavy-duty regulation went into full effect with the MY2010. For off-road engines, the implementation for the new Tier IV Final regulations is 2014.

Most members of the transportation community only expect emissions restrictions to increase over the coming years. To meet the ever-stringent emissions regulations, the diesel engine industry has developed and applied new technologies such as diesel particulate filters (DPFs) for PM reduction, selective catalytic reduction (SCR) devices or lean NOx traps (LNT) for NOx control, and exhaust gas recirculation (EGR) technology.