Demonstration of a Diesel Fuel-Borne Catalyst System and Low NOx ControlTechnology for Reducing Particulate and NOx Emissions

摘要

The objective of this work was to demonstrate vehicle and emissions performanceof an advanced diesel engine achieving low NOx and particulate (PM) emissions. Arthur D. Little, teamed with Rhodia and Cummins, proposed a cost-shared project to the SCAQMD and the ARB to develop and demonstrate, in vehicle applications, an EGR engine using Rhodia's cerium-based fuel additive and a particulate filter. The tradeoff of reducing NOx and PM is well known for diesel engines, and the concept proposed to reduce NOx with cooled EGR and to use a filter to trap the increased exhaust particulate. The Rhodia cerium-based catalytic diesel fuel additive was chosen to ensure filter regeneration by lowering the filter regeneration temperature. Rhodia had demonstrated their additive-filter technology in Europe, and had worked with Cummins on similar filter systems. What was new in this project was developing an engine system for both low-NOx and low-PM emissions performance. Cummins selected their B Series, 5.9L diesel engine for this project.