VII Kongres PTNSS - 27-29 Czerwiec 2017
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The possibilities of using DME (BioDME), as an additive to conventional gaseous fuels in SI engine

The results of SI engine fueled with blends of LPG and DME are presented in the paper. The range studies submitted includes measurements at varying engine loads, at selected values of speed. The research was conducted on a chassis dynamometer, specifying the engine load by the degree of throttle opening. Value of the mass fraction of DME in the blend with LPG was determined based on previous analyzes. The selected fuel blends containing from 7 to 17% DME (mass fraction). The main advantage of this fuel is that, the BioDME is included in the group of renewable fuels. Because of the similar to LPG physico-chemical properties, it is possible to use the existing distribution system and infrastructure. During the study was also performed a series of comparative measurements with pure LPG. Analyses show that of DME can be used as a partial substitute for LPG in SI engines. Its presence does not a negative impact on performance and emissions of the engine. Good flammability of DME, at the right share, improves the combustion process, which increases overall efficiency. The obtained results indicate that the amount of addition of DME should be varied depending on the engine load. Moreover, the use of this fuel does not require changes to the design fueling system and storage of LPG.
Tematyka artykułu: Paliwa alternatywne
Autor: Grzegorz Kubica
Współautor(zy): Marek Flekiewicz Paweł Marzec