Article
Green & Sustainable Science & Technology
Xiang Rao, Chenxing Sheng, Zhiwei Guo, Xuecheng Zhang, Huabing Yin, Chang Xu, Chengqing Yuan
Summary: This study focused on the performance impact of different surface textures on diesel CLPR under hot engine conditions, finding that appropriate surface texture (e.g., a 3 mm wide grooved texture) significantly affected the comprehensive performance of the diesel engine. These findings contribute to understanding the interaction between surface textures and diesel engine performance under various conditions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Engineering, Mechanical
Chenwei Miao, Zhiwei Guo, Chengqing Yuan
Summary: This study investigates the tribological behavior of cylinder liner-piston rings (CLPRs) during running-in, by applying different types of surface textures and characterizing the performance based on parameters such as friction coefficient, contact resistance, and wear topography. Experimental results demonstrate that textured surfaces improved friction performance during running-in compared to non-textured surfaces, while exhibiting differences in lubricant supply capacity and wear resistance. The co-texture shows a combination of advantages from dimples and groove textures, providing guidance for the design and manufacturing of CLPRs in marine diesel engines.
Article
Engineering, Mechanical
Tongyang Li, Xiaotong Zhu, Huaguo Tang, Baofeng Zhang, Lujie Wang, Yuan Yu, Zhuhui Qiao, Xuan Ma
Summary: This study proposes a new method for determining the lubrication regime in the piston ring-cylinder liner tribosystem based on comparing oil film thickness with critical values using characteristic topo-graphic parameters. The method can classify the lubrication regime into hydrodynamic, micro-plasto-elastohydrodynamic, micro-plastohydrodynamic, thin film, boundary, or mixed lubrication. The influence of thermal effects and oil-feed conditions on the lubrication regime is also discussed.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Huabing Yin, Xuecheng Zhang, Zhiwei Guo, Yicong Xu, Xiang Rao, Chengqing Yuan
Summary: This study investigated the synergistic effects of surface textures and lubricant additives on the tribological properties of the cylinder liner-piston ring (CLPR) in diesel engines. Two forms of surface texture were prepared on the liner surface using laser processing, and modified copper nanoparticles were used as lubricant additives. The results showed that the composite lubrication system exhibited good friction-reduction and wear-resistance when the appropriate texture was adopted. Additionally, the synergistic effects between the storage capability of textures and the self-repairing ability of CNP additives explained the improvement mechanism of CLPR's tribological properties.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Baofeng Zhang, Xuan Ma, Lining Liu, Hanzhengnan Yu, Ardian Morina, Xiqun Lu
Summary: In this study, operating parameters were obtained through an engine bench test and thousands of hours of reciprocating lubrication wear tests were conducted on a multifunction wear tester. The wear state of the cylinder liner was divided into mild, medium, and severe wear based on the analysis of wear rate variation under different test parameters. The wear mechanisms of spalling, delamination, and massive spalling were identified for different wear states.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Thermodynamics
Yongfang Zhang, Cheng Liu, Yanjun Lu, Jianxiong Kang, Hongbo Luo, Norbert Muller
Summary: The study considers a surface texture method to improve the frictional performance of the ring-liner system under cylinder deactivation conditions. Results show significant improvements in friction properties with surface texture, leading to notable decreases in total average friction loss and power loss for a six-cylinder gasoline engine.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2022)
Article
Multidisciplinary Sciences
Ferit Ficici, Sezer Kurgun
Summary: This study coated piston rings with Molybdenum powder using the HVOF method and examined the wear behavior compared to cast iron cylinder liners. Optimized parameters were determined to minimize wear loss, with load being the most effective parameter. Mathematical models were obtained through regression analysis and verification tests showed close agreement with experimental results, indicating dominant abrasive wear mechanism.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Mechanical
Lijun Zhang, Hang Wang, Dehao Liu, Qiang Zhang, Weijian Guo, Ning Yang, Jiayi Xu, Shulin Fu, Bohan Yang, Shibo Liu, Shuen Zhou
Summary: A new analysis model of cylinder liner-piston ring wear based on energy dissipation theory is proposed in this paper. The qualitative relationship between wear volume and acoustic emission (AE) signal energy is established, and a classification system using AE technology combined with a neural network is developed for wear monitoring and classification with high accuracy.
Article
Engineering, Mechanical
Rita Ferreira, Oscar Carvalho, Luis Sobral, Sandra Carvalho, Filipe Silva
Summary: The radial surface coating layer of compression piston rings is used to improve wear resistance in internal combustion engines. However, the friction coefficient of the piston ring-cylinder liner pair at top dead centers negatively affects the engine's tribological performance. This study tested dimples with different texture dimensions and densities in a home-developed tribometer and found that the texture with an aspect ratio of 0.25 and a density area of 15% yielded the best tribological results.
Article
Engineering, Mechanical
Gurtej Singh, Mohammad Farooq Wani, Mohammad Marouf Wani
Summary: The study aimed to reduce friction and wear in the ring/liner tribo-pair by using GNP/SAE 15W40 nano-lubricant. Results showed that graphene nano-lubricants (GNL) could improve friction coefficient, wear rate, and surface roughness of the piston ring under GNL lubricating conditions. Additionally, the wear tracks of the piston ring and cylinder liner indicated the formation of a tribo-film on worn surfaces, leading to decreased COF and wear rate.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
Article
Thermodynamics
Kai Ma, Zhiwei Guo, Chengqing Yuan
Summary: The study explored the effects of surface-texture technology on the friction and lubrication mechanism of cylinder liner-piston rings. The results showed that surface texture can increase oil film thickness, improve lubrication state, and reduce friction. With increased temperature, surface texture can reduce the wear of the cylinder liner and improve its supporting performance and oil storage capacity.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2023)
Article
Thermodynamics
Yanjun Lu, Jianxiong Kang, Xiaowei Zhao, Yongfang Zhang, Xinliang Yang, Ruibo Chen, Zhiguo Xing
Summary: The tribological performance of internal combustion engines (ICEs) has a significant impact on fuel efficiency and power consumption. The wear of the cylinder liner-piston ring (CLPR) system affects operation reliability. This study focuses on improving the tribological performance of ICEs by generating different textures on the CLPR surface through laser processing. The results show that dimple texture surfaces have better tribological performance and the coexistence of textures improves surface lubrication and abrasive particle storage.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2023)
Article
Engineering, Mechanical
Bo Xu, Bifeng Yin, Hekun Jia, Mingliang Wei, Kunpeng Shi
Summary: The application of novel injection strategies in combustion engines has worsened the wall-wetting problem, affecting the tribological performance of the cylinder liner-piston ring pair. Experimental results show that with more fuel diluting the oil, the bearing capacity of the oil film decreases and friction force increases.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
(2022)
Article
Chemistry, Physical
Markus Soderfjall, Carsten Gachot
Summary: Applying texture to the surface of a tribological interface can have an impact on frictional performance. However, there is limited research on the influence of texture on friction under lubricated sliding conditions, especially at high sliding speeds. This study experimentally investigates the effect of texture on frictional losses between the piston ring and cylinder liner. The results show a clear reduction in frictional losses with the textured cylinder liner, and there is good correlation between the experimental results and a numerical model.
Article
Engineering, Mechanical
Ajith Kurian Baby, P. K. Rajendrakumar, Deepak K. Lawrence
Summary: This paper investigates the influence of honing angle on the friction characteristics of the cylinder liner surface. The experimental results indicate that 40 degrees is the optimal honing angle.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Automation & Control Systems
Xiaojian Xu, Xinping Yan, Chenxing Sheng, Chengqing Yuan, Dongling Xu, Jianbo Yang
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2020)
Article
Engineering, Marine
Ailong Fan, Xinping Yan, Richard Bucknall, Qizhi Yin, Sheng Ji, Yuanchang Liu, Rui Song, Xiaping Chen
JOURNAL OF MARINE ENGINEERING AND TECHNOLOGY
(2020)
Article
Engineering, Marine
Chengqing Yuan, Pengcheng Pan, Yuwei Sun, Xinping Yan, Xujing Tang
Summary: The research shows that introducing solar energy into ship energy systems can reduce greenhouse gas emissions and fuel consumption, helping the inland river shipping industry comply with 'low carbon shipping' policies.
JOURNAL OF MARINE ENGINEERING AND TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Jiazhi Miao, Yongqing Li, Xiang Rao, Libao Zhu, Zhiwei Guo, Chengqing Yuan
INDUSTRIAL LUBRICATION AND TRIBOLOGY
(2020)
Article
Engineering, Mechanical
Chao Zhen Yang, Zhiwei Guo, Changkun Xu
INDUSTRIAL LUBRICATION AND TRIBOLOGY
(2020)
Article
Materials Science, Characterization & Testing
Xiang Liang, Zhiwei Guo, Tian Jun, Chengqing Yuan
Article
Engineering, Multidisciplinary
Shiqi Fan, Zaili Yang, Eduardo Blanco-Davis, Jinfen Zhang, Xinping Yan
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART O-JOURNAL OF RISK AND RELIABILITY
(2020)
Article
Polymer Science
Zumin Wu, Zhiwei Guo, Chengqing Yuan
Summary: Polyetheretherketone (PEEK) shows good performance as a water-lubricated bearing material and has application potential. The wear behavior and friction coefficient can evaluate the water lubrication performance of PEEK. Water film can form effectively at high sliding velocity, while transfer film can form at low sliding velocity.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Composites
Xin Xie, Zhiwei Guo, Chengqing Yuan
POLYMER COMPOSITES
(2020)
Article
Polymer Science
Xiang Liang, Zhiwei Guo, Jun Tian, Chengqing Yuan
POLYMERS FOR ADVANCED TECHNOLOGIES
(2020)
Article
Engineering, Mechanical
Zhenxiang Yang, Zhiwei Guo, Zongrong Yang, Chaobao Wang, Chengqing Yuan
Summary: This study explored the use of micro-encapsulated lubricants to improve the tribological properties of water-lubricated bearings. The addition of microcapsules to UHMWPE effectively reduced friction coefficient, wear loss, and optimized the wear surface morphology of the composites.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Engineering, Marine
Zhongzhi Liu, Zhiwei Guo, Yongqing Li, Libao Zhu, Chengqing Yuan
Summary: This paper presents an improved failure risk assessment method for a large luxury cruise ship's bilge system under fire accident conditions, incorporating an expert weight calculation model and a risk coefficient calculation model. Sensitivity analysis is conducted to study the effects of these models on the method's performance. Empirical study results demonstrate the method's effectiveness in minimizing issues encountered with traditional methods and providing practical design guidelines.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Civil
Hongfen Bai, Bo Yu, Wu Ouyang, Xinping Yan, Jingwei Zhu
Summary: The study introduces a sensorless control algorithm based on high frequency current injection to estimate the rotor position accurately, which improves the reliability of the fault tolerant motor system.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Engineering, Marine
Xu You, Xinping Yan, Jialun Liu, Shijie Li, Rudy R. Negenborn
Summary: This paper investigates the formation keeping problem of heterogeneous ships with underactuated inputs, uncertain dynamics, and environmental disturbances and proposes a novel virtual leader-follower formation scheme to address this problem.
Article
Engineering, Mechanical
Chang Du, Chenxing Sheng, Xingxin Liang, Xiang Rao, Zhiwei Guo
Summary: As an important friction pair in a diesel engine, the cylinder-liner piston ring (CL-PR) operates in a challenging high-temperature environment. In order to understand the relationship between the friction performance of the CL-PR and temperature changes, a reciprocating-friction and wear-testing machine was used to analyze the friction and lubrication performance of four different lubricating oils at various temperatures (room temperature, 60 degrees C, 90 degrees C, and 120 degrees C) based on friction coefficient, contact resistance, and surface topography. The results show that the tribological properties of the lubricating oils exhibit different trends as temperature increases. The friction coefficient of the base oil initially decreases and then increases with temperature, indicating improved friction performance due to a certain temperature rise, as well as the promotion of oxide film formation and reduction in friction coefficient with temperature. On the other hand, the friction coefficient of the other three lubricating oils initially increases and then stabilizes, with the most severe wear observed at 120 degrees C in the form of abrasive wear and adhesive wear.