Southwest Research Institute engineers have developed the next generation of clean diesel engine technology to reduce hazardous nitrogen oxides (NO x ) and carbon dioxide emissions while minimizing fuel consumption. Working with regulatory agencies, vehicle manufacturers and suppliers, SwRI combined engine modifications with integrated aftertreatment technology and control strategies to reach near-zero emissions levels (0.02 g/hp-hr NO x emissions). SwRI developed the technology for the California Air Resources Board (CARB). The work is described in a pair of SAE Technical Papers. Southwest Research Institute 2 SwRI combined engine modifications with integrated aftertreatment technology and control strategies to reach near-zero emissions levels. Through the continued efforts of a multidisciplinary team, SwRI has developed one of the most fuel-efficient, low-emission diesel engines in the world. Created to address California’s pollution challenges, this technology could be a solution for communities around the globe dealing with the effects of NO x . —SwRI […]