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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
