Biofuels and its spray interactions under pilot-main injection strategy

Oscar A. de la Garza, S. Martínez-Martínez, Madan Mohan Avulapati, Radboud Pos, Thanos Megaritis and Lionel Ganippa

Energy, 2021, vol. 219, issue C

Abstract: An experimental study was performed to explore the effect of pilot and main injection strategy on injection interactions and the spray characteristics of biodiesels that were derived from different feedstocks. Biodiesel considered in this investigation ranged from rapeseed methyl ester, sunflower oil methyl ester, coconut oil methyl ester, waste cooking methyl ester, and tallow methyl ester. The sprays of these biodiesel were characterized through the measurement of macroscopic parameters such as spray penetration, spray angle and spray area, which were compared against ULSD for both pilot and main injection. This investigation was performed in a constant volume chamber maintained under non-reactive conditions. The magnitude of cone angle and spray area for most biodiesel were lower than ULSD. Conversely, the spray tip penetrations for most biodiesels were higher than ULSD. The main injection showed relatively larger magnitude for all macroscopic spray parameters than those of pilot injection. Expulsion of liquid was observed in the dwell period between pilot and main injection as well as end of main injection for all fuels. The end-of-injection expulsions are mainly due to injector needle dynamics rather than variation in physical properties of fuels.

Keywords: Biofuels; Spray interactions; Mixing process; Pilot injection strategy (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:219:y:2021:i:c:s0360544220325718

DOI: 10.1016/j.energy.2020.119464

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