Converter/EGR System for Particulate & NOx Reduction from Heavy-Duty Diesel Trucks

The U.S. EPA and the California Air Resource Board are imposing regulations for the control of smoke opacity and particulates from diesel engines in mobile application, and the majority of AF trucks are not in compliance. Additionally, the AF is pursuing NOx reduction credits wherever it is feasible. To achieve both of these goals, CTI is proposing to develop a particulate converter/exhaust gas recirculation (EGR) system for emission reduction. The particulate converter system is an innovative passive exhaust after treatment device for the separation and incineration of diesel particulate employing and advanced method for incinerating particulates. The EGR hardware is designed to achieve highest NOx reduction, taking advantage of the converter to reduce the additional particulate emissions. Phase I calls for the development and construction of a particulate converter/EGR prototype for a heavy-duty truck for the AF. The prototype will be first tested for emission and operability at CTI's facility. Then it will be tested at an independent emission test facility. CTI is targeting 90% reduction in particulates/smoke, 30% reduction in NOx, 70% reduction in HC, and 80% reduction in CO. Higher emission reductions are targeted for Phase II.