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Atmosphere
Special Issues
Engine Emissions: Assessment and Control
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Engine Emissions: Assessment and Control

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Air Pollution Control".

Deadline for manuscript submissions: 12 July 2024 | Viewed by 606

Special Issue Editors

Dr. Yan Lei

E-Mail Website
Guest Editor
College of Energy and Power Engineering, Faculty of Environment and Life Science, Beijing University of Technology, Beijing 100124, China
Interests: energy saving and purification technology of vehicle power system; fuel system flow and simulation
Prof. Dr. Tao Qiu

E-Mail Website
Guest Editor
College of Energy and Power Engineering, Faculty of Environment and Life Science, Beijing University of Technology, Beijing 100124, China
Interests: flow and combustion of fuel system and exhaust system; emission detection and control

Special Issue Information

Dear Colleagues,

Engine emission is one of the key sources of air pollution. Although the electric drive of the power system is a major developmental direction, the engine still has advantages and potential that cannot be ignored compared with the electric drive, and it is still widely used in automobiles, trains, ships and aerospace. Therefore, under the tide of power system electric drive, it is very meaningful to carry out research on engine emission and control.

This Special Issue covers all kinds of engine emission and control technology research, encouraging the application of exhaust emission control technology for motor vehicles, non-road mobile machinery, marine engines, clean fuel technology, and artificial intelligence technology in emission control research.

Dr. Yan Lei
Prof. Dr. Tao Qiu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • internal combustion engines
  • motorcycle
  • non-road mobile machinery
  • marine engine
  • clean fuel
  • artificial intelligence technology in emission control

Published Papers (2 papers)

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Research

18 pages, 6280 KiB  
Article
Experimental Research on Regulated and Unregulated Emissions from E20-Fuelled Vehicles and Hybrid Electric Vehicles
by Tao Qiu, Yakun Zhao, Yan Lei, Zexun Chen, Dongdong Guo, Fulu Shi and Tao Wang
Atmosphere 2024, 15(6), 669; https://doi.org/10.3390/atmos15060669 (registering DOI) - 31 May 2024
Abstract
Ethanol as a renewable fuel has been applied in fuel vehicles (FVs), and it is promising in hybrid electric vehicles (HEVs). This work aims to investigate the emission characteristics of ethanol applied in both FVs and plug-in hybrid electric vehicles (PHEVs). The paper [...] Read more.
Ethanol as a renewable fuel has been applied in fuel vehicles (FVs), and it is promising in hybrid electric vehicles (HEVs). This work aims to investigate the emission characteristics of ethanol applied in both FVs and plug-in hybrid electric vehicles (PHEVs). The paper conducted a real-road test of an internal combustion FV and PHEV, respectively, based on the world light vehicle test cycle (WLTC) by using gasoline and regular gasoline under different temperature conditions. The use of E10 and E20 in FVs has been effective in reducing the conventional emissions of the vehicles. At 23 °C, E10 and E20 reduced the conventional emissions including carbon monoxide (CO), total hydrocarbon compound (THC), non-methane hydrocarbon compound (NMHC), particulate matter (PM), and particulate number (PN) by 15.40–31.11% and 11.00–44.13% respectively. At 6 °C, E10 and E20 reduced conventional emissions including THC, CO, and PM by 2.15–8.61% and 11.02–13.34%, respectively. However, nitrogen oxide (NOX) emissions increased to varying degrees. The reduction trend of non-conventional emissions including methane (CH4), nitrous oxide (N2O), and carbon dioxide (CO2) from FVs fueled with E10 and E20 is not significant for vehicles. Overall, the emission reduction effect of E20 is better than that of E10, and the emission reduction effect of ethanol gasoline on vehicle emissions is reduced at low temperatures. Lower ambient temperatures increase vehicle emissions in the low-speed segment but decrease vehicle emissions in the ultra-high-speed segment. HEV emissions of THC, CO, PN, and PM are reduced by 25.28%, 12.72%, 77.34%, and 64.59%, respectively, for E20 compared to gasoline, and the use of E20 in HEVs contributes to the reduction of overall vehicle emissions. Full article
(This article belongs to the Special Issue Engine Emissions: Assessment and Control)
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19 pages, 4186 KiB  
Article
Experimental Study on Evaporation and Micro-Explosion Characteristics of Ethanol and Diesel Blended Droplets
by Yixuan Zhang, Kesheng Meng, Lin Bao, Qizhao Lin and Svitlana Pavlova
Atmosphere 2024, 15(5), 604; https://doi.org/10.3390/atmos15050604 - 15 May 2024
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Abstract
In this study, the constant temperature control system of a heating plate was established, ethanol–diesel fuel with different proportions was prepared, and a series of experiments were carried out. The experimental system was used to observe, summarize, and analyze four evaporation and crushing [...] Read more.
In this study, the constant temperature control system of a heating plate was established, ethanol–diesel fuel with different proportions was prepared, and a series of experiments were carried out. The experimental system was used to observe, summarize, and analyze four evaporation and crushing modes of mixed droplets, which were explosion, liquid filament stretching, exocytosis, and ejection mode. The evaporation process of four kinds of mixed droplets in their life cycle was analyzed by normalizing the diameter square. It was proposed that the evaporation process of droplets could be divided into the following three stages: a heating stage, a fluctuating evaporation stage, and an equilibrium evaporation stage. It was also pointed out that the expansion, ejection, and micro-explosion of droplets were the causes of fluctuating evaporation. The concept of expansion and crushing intensity was put forward and the expansion and crushing intensity of ethanol/diesel mixed droplets with different proportions were calculated. The reasons why expansion and crushing intensity first increased and decreased with the increase in ethanol blending ratio were analyzed. Finally, the time proportion of ethanol–diesel mixed droplets in each evaporation stage was calculated, which explained that the time proportion of the instantaneous heating stage showed a parabolic law with the increase in ethanol content. Full article
(This article belongs to the Special Issue Engine Emissions: Assessment and Control)
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