Abstract
EG (ethylene glycol) is a good oxygenated fuel for diesel due to structure and thermal conductivity. Based on dual fuel experiment on a modified diesel engine, combustion and emission characteristics are investigated at 1400 r/min with four low EG energy ratio (EGER) (named EG0, EG5, EG10 and EG15 respectively). Combustion results show that the peak cylinder pressure, the peak heat release rates (HRRs) and pressure rise rate increase when EG is used in fumigation mode. However, the maximum in-cylinder temperature changed little. Owing to the auto-ignition character, EG is ignited before diesel injection at 1.29 MPa BMEP, ignition delay is shorten from 0.97 MPa to 1.29 MPa BMEP, and postpone slightly from 0.48 MPa to 0.64 MPa BMEP. Combustion duration decreases with the increase of EGER. The brake thermal efficiency (BTE) is lower and the diesel equivalent brake specific fuel consumption (BSFC) is higher followed by the rise of EGER. For emissions, the NOX, THC, CO2 and soot emissions decrease followed by the rise of EGER at the same time, while CO emissions increase. EG reduce ultrafine particles (UFPs) and decrease the average diameter of UFPs particularly. In conclusion, EG is found to be a good choice for dual fuel diesel engine from 0.81 MPa to 1.29 MPa BMEP in the aspect of performance and emissions.
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.
