Exploring the potential benefits of Ethanol Direct Injection (EDI) timing and pressure on particulate emission characteristics in a Dual-Fuel Spark Ignition (DFSI) engine

Li, Xiang, Li, Dayou, Liu, Jingyin , Ajmal, Tahmina, Aitouche, Abdel, Mobasheri, Raouf, Rybdylova, Oyuna, Pei, Yiqiang and Peng, Jun (2022) Exploring the potential benefits of Ethanol Direct Injection (EDI) timing and pressure on particulate emission characteristics in a Dual-Fuel Spark Ignition (DFSI) engine. Journal of Cleaner Production, 357 (131938). ISSN 0959-6526

Full content URL: https://doi.org/10.1016/j.jclepro.2022.131938

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Exploring the potential benefits of Ethanol Direct Injection (EDI) timing and pressure on particulate emission characteristics in a Dual-Fuel Spark Ignition (DFSI) engine
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Abstract

Nowadays, particulate matter emitted by vehicles severely impacts environmental quality and human health. In this paper, the potential benefits of Ethanol Direct Injection (EDI) timing and pressure on particulate emission characteristics in a Dual-Fuel Spark Ignition (DFSI) engine were initially and systematically explored. The experimental results illustrate that by delaying EDI timing from -340 ºCA to -300 ºCA, there is a significant benefit in both particulate number and mass concentration. Furthermore, the size distribution curve of particulate number changes from bimodal to unimodal, meantime size distribution curves of particulate mass consistently concentrate on the accumulation mode. By increasing EDI pressure from 5.5 MPa to 18 MPa, the droplet size of ethanol spray can be effectively reduced. The benefit of increasing EDI pressure is more apparent in reducing particulate number is than particulate mass. The concentration of number and mass for total particulates have a reduction of 51.15% and 22.64%, respectively. In summary, it was demonstrated that an appropriate EDI timing or high EDI pressure could be a practical and efficient way to reduce particulate emissions in a DFSI engine.

Keywords:43 Dual-Fuel Spark Ignition (DFSI) engine, Particulate emissions, Ethanol, Injection timing
Subjects:H Engineering > H311 Thermodynamics
Divisions:College of Science > School of Engineering
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ID Code:49097
Deposited On:29 Apr 2022 17:09

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