...Yanrong Wang; Zongsheng Sun; Ruoxuan Huang; Zhiqiang Zhao; Weizheng Zhang This article explores the performance of different commercial piston rings when matched with a boron-phosphorus (BP) alloy cast iron cylinder liner, specifically in high-power density diesel engines. The focus...

... for publication in the J ournal of T ribology . 21 11 2022 03 02 2023 09 02 2023 07 03 2023 nitrogen-doped graphene friction and wear high temperature lubrication mechanism mixed lubrication nano-tribology piston rings wear mechanisms National Natural Science...

...Zhan Liu; Xianghui Meng; Limin Zhang; Weisheng Cheng; Xing Wang More detailed and accurate modeling is very important for analyzing and optimizing the tribological performance of the piston-ring-cylinder liner system. However, due to the difficulty of modeling and solving, theoretical studies...

...Shelby R. Maddox; Arup Gangopadhyay; Hamed Ghaednia; Jiyu Cai; Xiaoxiao Han; Xiangbo Meng; Josue A. Goss; Min Zou The piston ring and liner interface is a major source of friction loss in automotive combustion engines. This loss can be mitigated by learning from surfaces from nature that manipulate...

... friction modifiers boundary lubrication friction lubricant additives piston rings surface layers Improving energy efficiency of internal combustion (IC) engines is a key intermediate term challenge for the automotive industry. In the case of commercial light-duty vehicles, thermodynamic...

... − ω r e s ) n a ϕ r e s ( z ) d z ] End if References [1] Usman , A. , and Park , C. W. , 2016 , “ Optimizing the Tribological Performance of Textured Piston Ring–Liner Contact for Reduced Frictional Losses in SI Engine: Warm Operating...

...V. Ezhilmaran; N. J. Vasa; Sivarama Krishnan; L. Vijayaraghavan Femtosecond laser-assisted surface texturing of compression piston rings is proposed and demonstrated. A femtosecond pulsed Ti 3+ :sapphire laser is used to generate dimples of the same size but with different area density on a moly...

... additives lubricants piston rings wear Rapid depletion of petroleum sources and widespread increase of public demand for environmental safeguards and remedies have urged the need for biodegradable lubricants to be utilized in various applications. As neat base oil, bio-based lubricants are highly...

... in order to quantify the friction losses produced in the piston ring assembly, crankshaft bearings, and valvetrain. In order to obtain the experimental friction mean effective pressure (FMEP) in a DI-diesel engine, whose main characteristics are listed in Table 1 , the net indicated mean effective...

...Wen-Bin Chen; De-Liang Liu; Jiu-Jun Xu; Ruo-Xuan Huang; Ze-Zhong Chen; Feng-Ming Du; Zhi-Jun Yan The piston ring pack and the ports on the cylinder linear wall have a great impact on the performance of the two-stroke opposed-piston engine. In this work, a piston ring pack model for this type...

...; published online May 14, 2018. Assoc. Editor: Stephen Boedo. 21 11 2017 13 04 2018 Piston rings Sliding Surface properties Surface roughness Wear Characterization Asperities The piston ring/cylinder bore tribosystem is of utmost importance for engine performance...

...Yin Bifeng; Gao Dashu; Sun Shao; Xu Bo; Jia Hekun In this paper, a profile design of surface texture was applied for improving the tribological performance of piston ring–cylinder pair. The design of texture pattern was implemented by numerous textures of different depths in sliding speed direction...

.... Editor: Dae-Eun Kim. 22 08 2017 15 02 2018 Friction Lubricant additives Nano-tribology Piston rings Wear mechanisms Increasing fuel economy in a green environment is the hour challenge. Researchers, all over the world, try to find creative methods to replace...

... , D. P. , 1998 , “Investigation of Oil Transport Mechanisms in the Piston Ring Pack of a Single Cylinder Diesel Engine, Using Two Dimensional Laser Induced Fluorescence,” SAE Paper No. 982658. 10.4271/982658 [4] Gulwadi , S. D. , 1998 , “ A Mixed Lubrication and Oil Transport Model...

... lubrication Piston rings Surface treatments Viscosity When the friction pairs are running at the start and stop phases, the lubrication condition of the tribology systems is usually under the mixed or starved lubrication conditions [ 1 ]. Direct metal-to-metal contact can be inevitable, especially...

.... Assoc. Editor: Mihai Arghir. 19 03 2015 28 09 2015 Boundary lubrication Friction Hydrodynamic lubrication Piston rings Fuel efficiency and reduction of emissions are key drivers for the modern automotive IC engine development. Parasitic frictional losses produced...

.... Assoc. Editor: Mircea Teodorescu. 17 07 2014 22 12 2014 05 02 2015 In this paper, the frictional vibration behavior under different wear states was investigated by the friction and wear experiments of the piston ring against the cylinder liner of marine diesel engine on CFT-I...

... due to evaporation was found to be very similar for all bore orders where conformability of the piston ring was not taken into account. Further study is essential to investigate the ring elastic conformability on lube oil consumption, which is beyond the scope of the current study. References...