Exhaust Emission Characteristics of Diesel Engine Using Jatropha Crude Oil Blends

Satoshi Kato, Yoshimitsu Kobashi, Yasumitsu Suzuki, Koji Tosa, Katsuyoshi Asaka, Alberto Macamo

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


Jatropha biofuel is promising renewal oil to produce biodiesel fuel through transesterification method which is shown in many papers. The ideal diesel alternative fuel obtained considering Jatropha as materials is Fatty Acid Methyl Ester (FAME). It is more desirable than the viewpoint of economical efficiency and CO2 control to operate a diesel engine with Jatropha crude (JC) oil. It is the purpose of this research to examine a possibility of using advantageous JC oil direct use as diesel engine fuel, in consideration of the sustainable production of the Jatropha biofuel in Mozambique. The adaptability to the diesel engine of diesel oil and the mixed fuel of JC was examined. Jatropha crude oil contains phorbol ester (PEs) which is a promoter of cancer. Measurement of the concentration of PEs in an exhaust gas was performed using High Performance Liquid Chromatography (HPLC). Skip cycle operation was performed for diesel engine with an electronically-controlled fuel injection system, and it was checked that the PEs concentration in the exhaust gas in low load operation which imitated cold starting condition. As a result of conducting the experiment by the JC mixed fuel up to JC60 had little influence on indicated thermal efficiency and the exhaust gas components except PM, and it has checked the possibility of utilization. However, PM in an exhaust gas increased in proportion to the mixed ratio of JC. Also in the skip cycle which imitated cold starting, it checked that the PEs concentration in an exhaust gas was below a detection limit.

Original languageEnglish
JournalSAE Technical Papers
Publication statusPublished - Oct 13 2014
Externally publishedYes
EventSAE 2014 International Powertrains, Fuels and Lubricants Meeting, FFL 2014 - Birmingham, United Kingdom
Duration: Oct 20 2014Oct 22 2014

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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