Global Trends In Diesel Emissions Control - A 1998 Update

Two opposing trends with significant implications for the future growth of diesel vehicles and engines are taking place -an increased focus on small particles and ozone levels as serious causes of adverse effects on health and the environment and concerns regarding global warming and the need to lower carbon dioxide emissions. The purpose of this paper is to summarize developments with regard to both of these areas and to highlight the emerging concerns with the number and size of so called ultrafine particles and high in use NOX emissions from US heavy duty trucks.