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

Jin Kusaka, Takashi Okamoto, Yasuhiro Daisho, Ryouji Kihara, Takeshi Saito

Research output: Contribution to journalArticle

104 Citations (Scopus)


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

Original languageEnglish
Pages (from-to)489-496
Number of pages8
JournalJSAE Review
Issue number4
Publication statusPublished - 2000 Oct


ASJC Scopus subject areas

  • Automotive Engineering

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