After-Treatment System of Medium Duty Engines Using Diesel Fuel as a Reducing Agent for NOx Reduction

Achieving cleaner air throughout the world requires reducing diesel emissions. Therefore, after-treatment system without using a urea solution (DEF) called DPR-II has been developed in-house. It uses diesel fuel as a reducing agent (HC-SCR) to reduce NOx emission in diesel exhaust. The development of the fundamental technology could result in high NOx reduction performance at low to high temperature ranges, to meet the Japan 2016 emission regulation.