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Energies
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Combustion and Emission Characteristics of Rotary Engine
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Combustion and Emission Characteristics of Rotary Engine

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "I2: Energy and Combustion Science".

Deadline for manuscript submissions: closed (14 October 2022) | Viewed by 1557

Special Issue Editors

Dr. Baowei Fan

E-Mail Website
Guest Editor
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Interests: internal combustion engine; rotary engine; alternative fuel for engine; jet ignition mechanism; reduction of combustion mechanism; combustion; emission
Dr. Jinxin Yang

E-Mail Website
Guest Editor
College of Energy and Power Engineering, Beijing Lab of New Energy Vehicles and Key Lab of Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China
Interests: internal combustion engine; rotary engine; alternative fuel; combustion; emission
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jianbing Gao

E-Mail Website
Guest Editor
School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Interests: internal combustion engines; exhaust emission control; particles physic-chemical properties; alternative fuels; hydrogen combustion; opposed rotary piston engines
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In addition to reciprocating piston engines, rotary engines are another high-efficiency internal combustion engine which have many advantages such as simple structure, few parts, stable operation, and high power density. Therefore, rotary engines have broad application prospects in civil and national defense fields such as automobiles, small aircraft, and unmanned aerial vehicles. In recent years, with the rapid development of extended-range electric vehicles, there is an urgent need for an engine with high powered density and small volume as its range extender power. As the rotary engine can fully meet this demand, it has ushered in new development opportunities in the field of incremental electric vehicles. For the numerous practical uses described above, much attention has been given to the rotary engine in many countries in recent years.

This Special Issue aims to present and disseminate the most recent advances in mixture organization, combustion process and emission of all types of rotary engines.

Dr. Baowei Fan
Dr. Jinxin Yang
Dr. Jianbing Gao
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. Energies is an international peer-reviewed open access semimonthly 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 2600 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

  • alternative fuels for rotary engines
  • mixture organization in the cylinder
  • combustion process in the cylinder
  • emission control for rotary engines
  • chemical reaction mechanism suitable for rotary engine
  • advanced testing technology for rotary engine
  • advanced modeling methods for rotary engine
  • miniaturization of rotary engine
  • the latest application of rotary engine

Published Papers (1 paper)

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Research

22 pages, 7778 KiB  
Article
Influence of Hydrogen Enrichment Strategy on Performance Characteristics, Combustion and Emissions of a Rotary Engine for Unmanned Aerial Vehicles (UAVs)
by Merve Kucuk, Ali Surmen and Ramazan Sener
Energies 2022, 15(24), 9331; https://doi.org/10.3390/en15249331 - 9 Dec 2022
Cited by 1 | Viewed by 1012
Abstract
In recent years, there has been great interest in Wankel-type rotary engines, which are one of the most suitable power sources for unmanned aerial vehicle (UAV) applications due to their high power-to-size and power-to-weight ratios. The purpose of the present study was to [...] Read more.
In recent years, there has been great interest in Wankel-type rotary engines, which are one of the most suitable power sources for unmanned aerial vehicle (UAV) applications due to their high power-to-size and power-to-weight ratios. The purpose of the present study was to investigate the potential of a hydrogen enrichment strategy for the improvement of the performance and reduction of the emissions of Wankel engines. The main motivation behind this study was to make Wankel engines, which are already very advantageous for UAV applications, even more advantageous by applying the hydrogen enrichment technique. In this study, hydrogen addition was implemented in a spark-ignition rotary engine model operating at a constant engine speed of 6000 rpm. The mass fraction of hydrogen in the intake gradually increased from 0% to 10%. Simulation results revealed that addition of hydrogen to the fuel accelerated the flame propagation and increased the burning speed of the fuel, the combustion temperature and the peak pressure in the working chamber. These phenomena had a very positive effect on the performance and emissions of the Wankel engine. The indicated mean effective pressure (IMEP) increased by 8.18% and 9.68% and the indicated torque increased by 6.15% and 7.99% for the 5% and 10% hydrogen mass fraction cases, respectively, compared to those obtained with neat gasoline. In contrast, CO emissions were reduced by 33.35% and 46.21% and soot emissions by 11.92% and 20.06% for 5% and 10% hydrogen additions, respectively. NOx emissions increased with the application of the hydrogen enrichment strategy for the Wankel engine. Full article
(This article belongs to the Special Issue Combustion and Emission Characteristics of Rotary Engine)
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