Combustion and exhaust gas emission characteristics of a diesel engine dual-fueled with natural gas

摘要: Abstract This paper deals with a diesel engine dual-fueled natural gas. system can achieve high thermal efficiency at higher loads by utilizing the premixed lean gas mixture ignited pilot-injected fuel. At low loads, however, THC emission and were observed. To resolve these problems, effects of EGR intake heating an exhaust to heat exchanger on performance emissions investigated, especially loads. In addition, 3-CFD simulations conducted analyze combustion process in chamber, using KIVA-3 code. The result indicates that lower be improved air combined EGR.