Open Access

ARTICLE

Characteristics of Diesel/N-Butanol Blend on a Common Rail Diesel Engine with Exhaust Gas Recirculation

by Yanfei Chen¹, Jingjing He^2,*, Hao Chen^2,*, Xin Su², Bin Xie²

1 Nanjing Vocational Institute of Transport Technology, Nanjing, 211188, China
2 School of Automobile, Chang'an University, Xi'an, 710064, China

* Corresponding Authors: Jingjing He. Email: ; Hao Chen. Email:

Energy Engineering 2022, 119(3), 1239-1259. https://doi.org/10.32604/ee.2022.017847

Received 11 June 2021; Accepted 29 December 2021; Issue published 31 March 2022

Abstract

20% n-butanol is blended in diesel by volume (noted as D80B20) and experiment has been carried out to study the effect on the combustion and emission characteristics based on a common rail diesel engine with exhaust gas recirculation (EGR) system. The results reveal that D80B20 has longer ignition delay, shorter combustion duration and higher maximum in-cylinder temperature than pure diesel (noted as D100). Further, the number concentration and volume concentration of ultrafine particles decrease significantly while NO_X emissions increase a little with the addition of n-butanol. When the exhaust gas is induced into cylinder, NO_X emissions significantly decrease and ultrafine particles emissions increase. The number geometric mean diameters and volume geometric mean diameters of ultrafine particles increase with EGR ratio. Compared to D100 without EGR, D80B20 with 20% EGR ratio can reduce both NO_X and ultrafine particles emissions at 0.14 MPa BMEP and 0.56 MPa BMEP.

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