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Lookup NU author(s): Dr Yaodong WangORCiD
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
An experimental investigation is conducted on the influence of EGR (Exhaust Gas Recirculation) rates (0–40%)on the combustion and emission characteristics of n-butanol/diesel/PODE3-4 blends at low-temperature combustionmode in diesel engine. The results show that at identical EGR rate, compared to D100 (diesel fuel), thepeak values both of the mean cylinder pressure and the heat release rate of BD20 (20% butanol and 80% diesel involume) are increased, ignition delay is extended, and the brake thermal efficiency is enhanced. ConcerningBD20 blended with PODE3-4, the ignition delay is shortened, while both the brake thermal efficiency and thecombustion efficiency increase. At the EGR rate below 30%, as the EGR rate grows, the effects on emission ofsoot, CO and HC are not significant, while the emission of NOx is sharply reduced; when the EGR rate is above30%, as it grows, the emissions of soot, CO, and HC drastically rise. As EGR rate grows, the total particulatematter (PM) number concentrations of four fuels firstly decline and then rise, the total PM mass concentrationskeep stable firstly and then rise drastically. As the proportion of added PODE3-4 in BD20 grows, the particlegeometric mean diameters further decrease.
Author(s): Huang HZ, Li ZJ, Teng WW, Huang R, Liu QS, Wang YD
Publication type: Article
Publication status: Published
Journal: Applied Thermal Engineering
Print publication date: 05/01/2019
Online publication date: 28/09/2018
Acceptance date: 27/09/2018
Date deposited: 12/10/2018
ISSN (print): 1359-4311
ISSN (electronic): 1873-5606
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