期刊
FUEL
卷 90, 期 11, 页码 3439-3446出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2011.06.009
关键词
Bus diesel engine; Emissions; Diesel fuel blends; Straight vegetable oils
资金
- Greek Ministry of Transportation and Communications
An experimental study is conducted to evaluate the use of sunflower, cottonseed, corn and olive straight vegetable oils (SVO) of Greek origin, in blends with diesel fuel at proportions of 10 vol.% and 20 vol.%, in a fully instrumented, six-cylinder, turbocharged and after-cooled, heavy duty (HD), direct injection (DI), 'Mercedes-Benz', mini-bus engine installed at the authors' laboratory. The series of tests are conducted using each of the above blends, with the engine working at two speeds and three loads. Fuel consumption, exhaust smokiness and exhaust regulated gas emissions such as nitrogen oxides (NOx), carbon monoxide (CO) and total unburned hydrocarbons (HC) are measured. With reference to the corresponding neat diesel fuel operation, the vegetable oil blends show reduction of emitted smoke with slight increase of NOx and effectively unaffected thermal efficiency. Theoretical aspects of diesel engine combustion, combined with the very widely differing physical and chemical properties of the vegetable oils against those for the diesel fuel, aid to the correct interpretation of the observed engine behavior. (C) 2011 Elsevier Ltd. All rights reserved.
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