Xingyu Liang

Tianjin University

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Gequn Shu

Tianjin University

Yuesen Wang

State Key Laboratory of Hydraulics and Mountain River Engineering

Hua Tian

Tianjin University

Xiuxiu Sun

Ministry of Education of the People's Republic of China

Haiqiao Wei

Tianjin University

Hanzhengnan Yu

China Automotive Technology and Research Center

Gequn Shu

Tianjin University

Lihui Dong

Guangxi University

Hongsheng Zhang

Shanghai Maritime University

Bowen Zhao

Tianjin University

Cooperative Institutions

Tianjin University

147

Chinese Academy of Sciences

Nanjing Forestry University

University of Chinese Academy of Sciences

Shanghai Jiao Tong University

Dalian University of Technology

Huazhong University of Science and Technology

Nankai University

Hebei University of Technology

University of Science and Technology of China

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Investigation of steam utilization mode on performance and emissions characteristics of gasoline engine

Fuel (2023)

Xiuxiu Sun Panqi Wen Xingyu Liang Teng Ma Peixin Zhao

Thermal efficiency

10.1016/j.fuel.2023.129706

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Citations (0)

Impact of early injection on physicochemical characteristics of diesel soot particles

Fuel (2021)

Xingyu Liang Bowen Zhao Kun Wang Xu Lv Yajun Wang

Reactivity

Particle (ecology)

Ultrafine particle

10.1016/j.fuel.2021.120262

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Citations (17)

The acoustic-vibration characteristics of cylindrical roller bearings with raceway failures: Simulation and experiment

Measurement (2024)

Peng Dai Xingyu Liang Jianping Wang Fengtao Wang Linkai Niu

Raceway

10.1016/j.measurement.2024.114918

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Citations (4)

Soot particles undergo in-cylinder oxidation again via EGR recirculated gas: Analysis of exhaust soot particle characteristics

Journal of Aerosol Science (2023)

Bowen Zhao Xingyu Liang Kun Wang Xu Lv Yajun Wang

Particle (ecology)

Ultrafine particle

10.1016/j.jaerosci.2023.106190

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Citations (4)

Demonstration of a small‐scale power generator using supercritical CO₂

Carbon Energy (2024)

Ligeng Li Hua Tian Xin Lin Xianyu Zeng Yurong Wang

Abstract The supercritical CO 2 (sCO 2 ) power cycle could improve efficiencies for a wide range of thermal power plants. The sCO 2 turbine generator plays an important role in the sCO 2 power cycle by directly converting thermal energy into mechanical work and electric power. The operation of the generator encounters challenges, including high temperature, high pressure, high rotational speed, and other engineering problems, such as leakage. Experimental studies of sCO 2 turbines are insufficient because of the significant difficulties in turbine manufacturing and system construction. Unlike most experimental investigations that primarily focus on 100 kW‐ or MW‐scale power generation systems, we consider, for the first time, a small‐scale power generator using sCO 2 . A partial admission axial turbine was designed and manufactured with a rated rotational speed of 40,000 rpm, and a CO 2 transcritical power cycle test loop was constructed to validate the performance of our manufactured generator. A resistant gas was proposed in the constructed turbine expander to solve the leakage issue. Both dynamic and steady performances were investigated. The results indicated that a peak electric power of 11.55 kW was achieved at 29,369 rpm. The maximum total efficiency of the turbo‐generator was 58.98%, which was affected by both the turbine rotational speed and pressure ratio, according to the proposed performance map.

Electric generator

Maximum power principle

Ram air turbine

10.1002/cey2.428

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Citations (2)

Computational study of NOx reduction on a marine diesel engine by application of different technologies

Energy Procedia (2019)

Xiuxiu Sun Xingyu Liang Peilin Zhou Hanzhengnan Yu Xinyi Cao

The simulation model of two-stroke heave fuel oil marine diesel engine was developed in this paper. The model was validated with the experimental data. The ability of NOx reduction was researched for exhaust gas recirculation, humid air motor and miller cycle based on the simulation model. The results show that the EGR has the most potential to reduce the NOx emission. It can make the quantity of NOx meet the requirement of Tier Ⅲ. The reduction value of NOx was less for miller cycle. The HAM can be reduced the NOx. However, the depth of HAM was limited.

Two-stroke engine

Driving cycle

10.1016/j.egypro.2019.01.770

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Citations (16)

Structure Optimization for SCR Reactor Based on RSM Method

Energy Procedia (2019)

Xingyu Liang Fei Zhang Peijian Yang Enxing Zhang Xinyi Cao

Selective Catalytic Reduction (SCR) system provides an effective approach to removing NOx emission, to meet stringent emission legislation of NOx generated by internal combustion engine. However, the oversized SCR system would increase its operation costs and occupy more space, which restricts its widespread application to a certain extent. Therefore, the compact structure design of SCR system is worthy of research considering the limited installation space. In the present study, one-dimensional SCR model is established, and the effect of structural parameters on the SCR performance has been investigated. Then, based on the Response Surface Methodology (RSM), the coupling relationship among these structural parameters is explored. The optimal structural parameter values of SCR are calculated through the multi-objective optimization function. The SCR volume of the optimal structural parameters is reduced by 23.82% and the pressure drop generated by SCR reactor is reduced by 10.38%. Meanwhile, the decrease of NOx conversion efficiency could be negligible under the same condition.

Selective catalytic reduction

10.1016/j.egypro.2019.01.758

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Citations (7)

Effects of Steam-Injection Strategies on Performance and Emission Characteristics of Marine Engines

Journal of Energy Engineering (2023)

Xiuxiu Sun Peixin Zhao Xingyu Liang Guoxi Jing Guang Chen

In this study, the influence of direct steam injection (DSI) on the performance and emissions of marine engines is investigated. Simulation models are developed and tested based on experimental data. Steam is obtained by waste heat recovery in a marine engine. The limitations of DSI parameters are investigated based on the exhaust gas temperature. The steam quantity and temperature decrease with a decrease in load. The results show that steam mass plays an important role in NOx reduction and improving power. For a steam/fuel ratio of 1.27 at 100% load, the brake power improved by 3.09% and NOx emissions decreased by 4.67%. A higher degree of improvement is obtained with an increase in steam mass. The steam temperature and injection timing only slightly influenced the brake power and NOx emissions. When steam-injection timing improved to 12°CA at 100% load with injection duration decreasing from 85°CA to 25°CA, brake power improved from 3,485.7 to 3,529.7 kW. All of this demonstrates that the DSI approach has excellent energy-saving and emission reduction potential for marine engines. The steam-injection strategy should be optimized in the future.

Steam injection

10.1061/jleed9.eyeng-4743

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Citations (1)

Effects of Lube Oil Sulfur and Ash on Size, Morphology and Element Composition of Diesel Particles

SAE technical papers on CD-ROM/SAE technical paper series (2016)

Yuesen Wang Xingyu Liang Gequn Shu Lihui Dong Hanzhengnan Yu

Morphology

Ultra-low-sulfur diesel

10.4271/2016-01-0999

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Citations (8)