Laboratory endurance test of a sunflower oil blend in a diesel engine

M. Ziejeski, K. R. Kaufman

Research output: Contribution to journalArticlepeer-review

71 Scopus citations


The effects of using a 25/75 blend (v/v) of alkali refined sunflower oil and diesel fuel in a direct-injection diesel engine were compared to a baseline test with diesel fuel. There were no significant problems with engine operation during the baseline test. However, problems were experienced while using the blended fuel. The major problems were (a) abnormal buildup on the injection nozzle-tips, (b) injector needle sticking, (c) secondary injection, (d) carbon buildup in the intake ports, (e) carbon deposits on the exhaust valve stems, (f) carbon filling of the compression ring grooves, and (g) abnormal lacquer and varnish buildup on the third piston land. The 25.75 blend cannot be recommended for long-term use in a direct-injection engine.

Original languageEnglish (US)
Pages (from-to)1567-1573
Number of pages7
JournalJournal of the American Oil Chemists' Society
Issue number8
StatePublished - Aug 1983

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Organic Chemistry


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