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2012 | Vol. 19, No. 2 | 289-304
Tytuł artykułu

Research of usage of RRME and alcohol biofuel mixture in diesel engine

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The paper provides the results of an integrated research of the energy, environmental performance and traction indicators and the characteristics of fuel feed and performance of A41, 2F511, VALMET 320 DMG and Audi 1Z highspeed, direct-injection diesel engines when converting their operation from mineral diesel D to the fatty acid esters (RRME and RRBE) and alcohol biodiesel mixtures. The researches are carried out in cooperation of the Lithuanian and Polish partners within the framework of joint scientific projects under EUREKA international scientific program „E!4018 CAMELINA-BIOFUEL”. In the light of the new EU initiatives („White Paper” 2011), 30% optimum part of RRME bio-component in the mixture with D (B30) is validated for practical use. The characteristics of fuel supply and heat generation in a diesel cylinder are under investigation; an explanation of a significant reduction in the harmful component emission (EG) and 2 to 4% increase in the fuel efficiency in case of use of B30 and B10 biodiesels is offered. The presence of the ethanol alcohol component 9E) in D-RME-E and RME-E biofuel mixtures resulted in reduction of CO and NOx emission by 10 to 12% and EG smokiness - by 20% per each 10% increase of E part. The indicated efficiency of performance was increased by 2-2.5%. The indicators of cyclic instability did not exceed the corresponding indicators in diesel operation on D. It is established that the motor properties of tested B30 and B50 biofuels based on butanol and rapeseed oil butyl ester RBE are similar to RME biodiesels and have important advantages over them: the complete solubility of alcohol component and the possibility of B30 (D-RBE) use at ambient temperature up to -30 centigrade. The motor characteristics of the second-generation biodiesels produced from the non-food raw material (Camelina Sativa oil methyl esters) are highly competitive with and even exceed by separate indicators the similar indicators of certified RME biodiesels. It is demonstrated that the conversion of diesels, including the automobile diesels with EGR electronic system, to operation on D-RRME (RME, CSME) biodiesels does not require the change of regulation characteristics of the fuel-feed system. The test of the oxidation stability of D-RME and D-CSME biodiesels performed under operating conditions on S. Lebedevas, G. Lebedeva, J. Žaglinskis VALMET 320 DMG marine diesel proved the stability of the motor, energy, and environmental performance indicators for 7-8 months' biodiesel storage without the addition of antioxidant and for 13-14 months' storage - with the addition of Ionol BS200 antioxidant.

Opis fizyczny
Bibliogr. 18 poz., rys.
  • Klaipeda University, Maritime Institute Department of Marine engineering I. Kanto Street 7, LT-92123 Klaipeda, Lithuania tel./fax: +370 46 398729,
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