Combustion of used lubricating oil in a diesel engine

Hiroshi Tajima, Koji Takasaki, M. Nakashima, J. Yanagi, T. Takaishi, H. Ishida, S. Osafune, K. Iwamoto

Research output: Contribution to conferencePaperpeer-review

8 Citations (Scopus)


In Japan, about 750 million liters of lubricating oil from automobiles and marine engines become waste per year. The authors propose a plan to convert such used lubricating oil (ULO) to effective energy. In detail, some special diesel generator plants should be built and ULO should be burned there after some process. This plan has at least two advantages, i.e. to save the petroleum energy and to avoid the environmental pollution. Aim of this study is to develop the way to utilize ULO for diesel fuel at such a generator plant. Combustion characteristics of ULO are in detail investigated by observation of burning flames in a visual engine and by engine test run. As results of comparison between ULO and heavy fuel oil (HFO), ULO shows rather better ignition quality in the visual engine and lower smoke emission from the running test engine than HFO. However, as abnormally thick deposit of combustion products is found in the combustion chamber after a short time running, it is confirmed that some process to remove the additives from ULO before supplying to the engine is essential for the practical use.

Original languageEnglish
Publication statusPublished - Dec 1 2001
EventInternational Spring Fuels and Lubricants Meeting and Exhibition - Orlando, FL, United States
Duration: May 7 2001May 9 2001


OtherInternational Spring Fuels and Lubricants Meeting and Exhibition
Country/TerritoryUnited States
CityOrlando, FL

All Science Journal Classification (ASJC) codes

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


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