Showing papers on "Vegetable oil refining published in 1984"

Low Carbon Flower Buildup, Low Smoke, and Efficient Diesel Operation with Vegetable Oils by Conversion to Mono-Esters and Blending with Diesel Oil or Alcohols

Abstract: The purpose of this investigation is to evaluate the feasibility of rapeseed oil and palm oil for diesel fuel substitution in a naturally aspirated DI Diesel engine is evaluated. Means to reduce the carbon deposit buildup in vegetable oil combustion is found. In the experiments, the engine performance, exhaust gas emissions, and carbon deposits are measured for a number of fuels: rapeseed oil, palm oil, methylester of rapeseed oil, and these fuels blended with ethanol or diesel fuel with different fuel temperatures. Both of the vegetable oil fuels generate an acceptable engine performance and exhaust gas emission levels for short term operation, but they cause carbon deposit buildups and sticking of piston rings after extended operation. Practical solutions to overcome the problems are: increasing the fuel temperature to over 200/sup 0/C, blending 25 vol % diesel fuel in the vegetable oil, blending 20 vol % ethanol in the fuel, or converting the vegetable oils into methylesters.

Comparison of Diesel Engine Performance and Emissions from Neat and Transesterified Vegetable Oils

Abstract: A single-cylinder, 0.36 L, DI Diesel engine was operated on a certified No. 2. Diesel fuel, cottonseed oil, sunflowerseed oil, methyl ester of cottonseed oil, and methyl ester of sunflowerseed oil. The purpose of this study was to provide a comparison of performance and emission data when operating on neat vegetable oils, transesterified vegetable oils, and Diesel fuel. Results comparing the various vegetable oil fuels with No. 2 Diesel fuel generally show slight improvements in thermal efficiency and higher exhaust gas temperatures when operating on vegetable oils; equal or higher gas-phase emissions with vegetable oils; lower indicated specific revertant emissions with vegetable oils; and significantly higher aldehyde emissions, including an increased percentage of formaldehyde.

Diesel Engine Combustion of Sunflower Oil Fuels

Abstract: The performance, combustion, and exhaust emissions of diesel fuel, a blend of 25% sunflower oil in diesel fuel, and sunflower oil methyl ester have been compared All fuels performed satisfactorily in a direct injection diesel engine, with the fuels derived from sunflower oil giving somewhat higher cylinder pressures and rates of pressure rise due to a higher percentage of 'premixed' burning than the diesel fuel General performance and emissions characteristics of the two fuels were comparable, with the oil based fuels giving lower smoke readings 15 references

Treatment of vegetable oils

Abstract: A process for preparing triglycerides which are suitable as a lipid base for an injectable composition is described.