Abstract
Currently control on automobile emission is getting more restive and also the regulations for emission are enforced more stringent in order to settle environmental problems. Especially it has been many years that exhaust gases from diesel automobiles rather than from gasoline automobiles are critical issues concerned by Korea and other countries, and it is strongly required on the reduction techniques on harmful NOx and PM. This study is focused that the oxygen-enriched EGR system might be one of the good solutions to reduce smoke, PM and NOx in diesel engine. Thus, through this study the interrelation among parameters were intensively investigated and evaluated quantitatively, and some direction in design for heavy diesel engine with EGR applied with oxygen-enriched system might be proposed.