Article
Energy & Fuels
Hao Meng, Changwei Ji, Gu Xin, Jinxin Yang, Ke Chang, Shuofeng Wang
Summary: This study provides a comprehensive analysis of the hydrogen-fueled Wankel rotary engine (HWRE), comparing it with hydrogen-fueled reciprocating piston engines (HRPE) and gasoline conditions. The results show that HWRE has a higher power per displacement, but slightly lower brake thermal efficiency and higher NO emissions. Additionally, abnormal combustion characteristics and mechanisms differ between HWRE and HRPE.
Article
Chemistry, Physical
Jinxin Yang, Changwei Ji, Shuofeng Wang, Hao Meng
Summary: This study investigated the effect of ignition timing on a hydrogen-fueled Wankel rotary engine under low speed, part load, and lean combustion conditions, highlighting the importance of selecting the appropriate ignition timing for engine performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Hao Meng, Changwei Ji, Shuofeng Wang, Du Wang, Jinxin Yang
Summary: This study aimed to improve the idle performance of the n-butanol rotary engine by blending hydrogen and reducing idle speed. Results showed that hydrogen could enhance engine stability and economy, as well as effectively reduce CO and HC emissions. In addition, hydrogen enrichment could compensate for the negative effects of reducing idle speed on combustion and emissions.
Article
Energy & Fuels
Hao Meng, Changwei Ji, Jinxin Yang, Shuofeng Wang, Gu Xin, Ke Chang, Huaiyu Wang
Summary: This work experimentally investigates the asynchronous ignition in a hydrogen-fueled Wankel rotary engine. The findings demonstrate that a suitable asynchronous ignition can lead to better power performance and earlier ignition timing of the leading plug is more preferable. Moreover, asynchronous ignition can also reduce knock tendency and achieve a lower maximum pressure rising rate.
Article
Thermodynamics
Hao Meng, Changwei Ji, Yuanshu He, Hanlin Li, Jinxin Yang, Huaiyu Wang, Shuofeng Wang
Summary: This study discusses the potential of hydrogen/methane dual-fueled rotary engines and finds that compared to pure hydrogen or pure methane fuel, dual-fueled engines can achieve higher thermal efficiency and output power, while also maintaining satisfactory emission performance.
Article
Chemistry, Physical
Hao Meng, Changwei Ji, Du Wang, Gu Xin, Ke Chang, Jinxin Yang, Shuofeng Wang
Summary: This study investigates the application of quantitative and qualitative control on a hydrogen-fueled Wankel rotary engine (WRE). The results show that the combination of qualitative control and quantitative control is an effective way to improve the performance of a hydrogen-fueled WRE and address its drawbacks.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Jinxin Yang, Hao Meng, Changwei Ji, Shuofeng Wang
Summary: This study experimentally investigated the effect of spark plug position on the combustion and emission characteristics of a hydrogen-fueled Wankel rotary engine, finding that the leading spark plug is more suitable. With the leading spark plug position, a wider ignition range, higher maximum torque, and lower nitric oxide emissions were achieved.
Article
Energy & Fuels
Hao Meng, Changwei Ji, Jinxin Yang, Shuofeng Wang, Chunlei Gao, Xuesong Shen, Gu Xin, Chen Hong
Summary: The aim of this study is to experimentally assess the application of oxygen enrichment in hydrogen-fueled Wankel rotary engines. The results show that oxygen enrichment can effectively improve the brake torque of the engine, but it also decreases the brake thermal efficiency and increases NO emissions. Additionally, abnormal combustion phenomena start to occur as the oxygen-enriched level increases, affecting the normal operation of the engine.
Article
Energy & Fuels
Hao Meng, Changwei Ji, Siqi Liu, Jinxin Yang, Gu Xin, Chen Hong, Shuofeng Wang
Summary: In order to prevent global warming, the development of hydrogen energy has become a research focus for countries and regions worldwide. Hydrogen-fueled engines, particularly the Wankel rotary engine (WRE), have shown potential as an alternative to fossil-fueled engines due to their simple structure and excellent dynamics. However, hydrogen-fueled WREs suffer from low efficiency, high NOx emissions, and knocking issues.
Article
Thermodynamics
Hao Meng, Changwei Ji, Jianpu Shen, Jinxin Yang, Gu Xin, Ke Chang, Shuofeng Wang
Summary: This study aims to analyze the effect of cooled EGR on the combustion characteristics of hydrogen-fueled Wankel rotary engine (HWRE). The results show that cooled EGR level significantly influences the combustion process and operating stability, and can achieve higher brake thermal efficiency at the same torque. HWRE allows for a higher cooled EGR level in terms of efficiency and power output considerations.
Article
Energy & Fuels
Hao Meng, Changwei Ji, Jinxin Yang, Ke Chang, Gu Xin, Shuofeng Wang
Summary: This study aims to investigate the knock of HWRE from different aspects and provide relevant information for the design of hydrogen specific WRE. The results show that factors such as ignition timing, spark plug number, spark plug location, excess air ratio, and engine speed have an impact on the knock intensity and duration of HWER.
Article
Thermodynamics
Changwei Ji, Huaiyu Wang, Cheng Shi, Shuofeng Wang, Jinxin Yang
Summary: The research implemented an intelligent regression model and multi-objective optimization for a hydrogen-enriched gasoline rotary engine to predict and optimize performance, combustion, and emissions characteristics. The models were based on support vector machine (SVM) and optimized by genetic algorithm (GA) to obtain optimal parameters. The results showed that the models had high accuracy and low error rates, and the optimization process using non-dominated sorting genetic algorithm II led to Pareto-optimal solutions for higher performance and lower emissions.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Zhenyu Yang, Changwei Ji, Xionghui Huang, Jinxin Yang, Huaiyu Wang, Shuofeng Wang
Summary: Under the background of carbon peaking and carbon-neutral, the hydrogen-fueled Wankel rotary engine has gained attention for its excellent power and emission characteristics. This study investigates the effects of apex seal leakage on engine performance and proposes methods for calculating leakage area. It was found that leading spark plug leakage and corner seal leakage have the greatest impact on peak pressure and IMEP. Reducing leakage area and the distance between the leading spark plug and minor axis can improve engine performance.
Article
Thermodynamics
Hao Meng, Changwei Ji, Jinxin Yang, Ke Chang, Gu Xin, Shuofeng Wang
Summary: This study focuses on the experimental research of the combustion velocity of a hydrogen-fueled Wankel rotary engine and proposes a measurement method using dual spark plugs. The study found that using dual spark plugs can reduce the negative impact of flame propagation against the flow field. The combustion velocity of the engine is affected by the excess air ratio and engine speed, and the flame velocity and flow velocity both have a positive correlation with the knock level of the engine.
Article
Thermodynamics
Hao Meng, Changwei Ji, Teng Su, Jinxin Yang, Ke Chang, Gu Xin, Shuofeng Wang
Summary: This study investigates the knock characteristics of a hydrogen-fueled Wankel rotary engine (HWRE) and reveals important findings. The study finds that knock intensity, knock duration, and maximum pressure rising rate can be used to characterize the knock of the HWRE. Among these parameters, the maximum pressure rising rate is more advantageous in terms of computational cost and performance. Moreover, knock intensity has a significant impact on the timed sequence of peak knock pressure and peak in-cylinder pressure, and the mechanism of backfire caused by the knock of the HWRE is different from that of hydrogen-fueled reciprocating piston engines.
Article
Thermodynamics
F. Amrouche, P. A. Erickson, S. Varnhagen, J. W. Park
ENERGY CONVERSION AND MANAGEMENT
(2016)
Article
Chemistry, Physical
F. Amrouche, P. A. Erickson, J. W. Park, S. Varnhagen
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Chemistry, Physical
F. Amrouche, P. A. Erickson, J. W. Park, S. Varnhagen
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Chemistry, Physical
Samira Chader, Bouziane Mahmah, Khaled Chetehouna, Fethia Amrouche, Kamel Abdeladim
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2011)
Article
Chemistry, Physical
Fethia Amrouche, Ahmed Benzaoui, Paul Erickson, Bouziane Mahmah, Farid Herouadi, Maiouf Belhamel
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2011)
Article
Chemistry, Physical
F. Amrouche, P. A. Erickson, S. Varnhagen, J. W. Park
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Environmental Sciences
A. Namane, F. Amrouche, J. Arrar, O. Ali, A. Hellal
ENVIRONMENTAL TECHNOLOGY
(2020)
Article
Chemistry, Physical
A. Menaa, M. S. Lounici, F. Amrouche, K. Loubar, M. Kessal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Physical
H. Derbal-Mokrane, F. Amrouche, M. N. Omari, I. Yahmi
Summary: This study investigates small-scale electrolytic hydrogen production using an Organic Rankine Cycle driven by a parabolic trough collector in the Algerian Sahara climate. The city of Ghardaia is identified as the most favorable location for implementing the proposed system, with benzene as the optimal working fluid for achieving the highest hydrogen production rate in July.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Proceedings Paper
Engineering, Multidisciplinary
Fethia Amrouche, Ahmed Benzaoui, Farid Harouadi, Bouziane Mahmah, Maiouf Belhamel
