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Journal articles on the topic 'Piston skirt'

Author: Grafiati

Published: 14 March 2023

Last updated: 31 July 2025

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1

Dursunkaya, Zafer, Rifat Keribar, and Venkatesh Ganapathy. "A Model of Piston Secondary Motion and Elastohydrodynamic Skirt Lubrication." Journal of Tribology 116, no. 4 (1994): 777–85. http://dx.doi.org/10.1115/1.2927332.

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A model of elastohydrodynamic lubrication of piston skirts in reciprocating engines was developed in the context of a simulation of piston secondary motions. The piston secondary dynamics, skirt lubrication and skirt elastic deformation problems are simultaneously solved in the calculation. The model can represent both conventional and two-piece articulated pistons and also includes a treatment of wristpin lubrication. Skirt deformations are calculated using a skirt compliance matrix derived from a finite element model of the piston. The model was exercised by calculating piston secondary moti

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2

Teng, Dezhi, Jingsi Wang, Chengdi Li, and Xiaoxia Sa. "Investigation of Friction and Wear Behavior of Cast Aluminum Alloy Piston Skirt with Graphite Coating Using a Designed Piston Skirt Test Apparatus." Materials 15, no. 11 (2022): 4010. http://dx.doi.org/10.3390/ma15114010.

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A piston skirt friction and wear apparatus that simulates the contact and the relative motion of piston and cylinder liner in a real engine has been designed and constructed. With this apparatus, the friction and wear behavior of a cast aluminum alloy piston with a graphite coating under different loads was studied, and the effectiveness of the apparatus was confirmed. The total wear of the piston skirt was higher under a higher load, and the upper part of the skirt surface (around the height of the piston pin) was worn more severely. The wear mechanisms were studied and, based on the test res

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3

Smirnov, Sergei V., Vladimir V. Kopylov, Alexander R. Makarov, Alexander A. Vorobyev, and Kirill V. Shkarin. "An experimental study of the stress-strain state of the engine piston skirt on the engineless stand." RUDN Journal of Engineering Researches 20, no. 4 (2019): 285–92. http://dx.doi.org/10.22363/2312-8143-2019-20-4-285-292.

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The article describes the features developed by the authors of the profiling method of the piston skirt, provides the main parameters that affect the lubrication conditions of the piston skirt and the magnitude of mechanical losses. In computational studies, the basic formulas are given for determining the thickness of the oil layer in a piston skirt - cylinder sleeve conjunction to assess the nature of friction. To determine the deformations, the finite element method is used on the spatial model of the piston. To verify the finite element model, a stand for experimental studies was developed

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4

Sun, Jun, Feifei Hao, Guangsheng Liu, et al. "Research on the lubrication performance of engine piston skirt–cylinder liner frictional pair considering lubricating oil transport." International Journal of Engine Research 21, no. 4 (2018): 713–22. http://dx.doi.org/10.1177/1468087418778658.

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In current lubrication analysis of piston skirt, the flooded status is generally considered in the piston skirt–cylinder liner frictional pair in all strokes of an engine operating cycle. However, the quantity of lubricating oil at the entrance of piston skirt cannot always ensure the sufficient lubrication status of piston skirt–cylinder liner frictional pair when the piston moves from the bottom dead center to the top dead center in actual engine. In this article, based on the model of piston secondary motion, fluid lubrication, and lubricating oil flow, the lubrication performance of piston

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5

Gao, Qi, Cheng Ying Li, Hong Zeng, and Lei Bo Zhao. "Middle-Convex Curve and Ellipse Surface of Piston Skirt Design Based on MATLAB and Pro/E." Advanced Materials Research 299-300 (July 2011): 891–94. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.891.

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In this paper, the characteristics and design rules of piston skirt middle-convex ellipse surface are studied, and the piston skirt profile mathematical model was established. Piston skirt middle-convex curve is interpolated based on MATLAB, and the piston middle-convex surface was generated according to the theory of surface modeling; the piston skirt transversal section was controlled based on Pro/E curvilinear equation, and then the piston skirt surface was created. The example indicates that commonality and fitting precision of these two design methods are excellent, so it has the better a

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6

Blair, W. L., D. P. Hoult, and V. W. Wong. "The Role of Piston Distortion on Lubrication in a Reciprocating Engine." Journal of Engineering for Gas Turbines and Power 112, no. 3 (1990): 287–300. http://dx.doi.org/10.1115/1.2906494.

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The microgeometry of the piston, rings, and skirt relative to the liner strongly influences lubrication in a reciprocating engine. This study develops an approximation technique that decouples the thermomechanical piston-skirt distortions from the complex lubricant support in a large diesel engine. The model considers the limiting case of starved skirt lubrication with large clearance. It permits efficient design of machined three-dimensional piston-skirt contours for piston support. In the calculations, a three-dimensional finite-element model is coupled with a postprocessing algorithm to pre

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7

McFadden, PD, and SR Turnbull. "A study of the secondary piston motion arising from changes in the piston skirt profile using a simplified piston skirt model." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 227, no. 1 (2012): 38–47. http://dx.doi.org/10.1177/0954406212444509.

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An existing model of the interface between a parallel-sided piston skirt and the cylinder wall in an internal combustion engine is extended to allow the modelling of barrelling of the piston skirt. The effects of the skirt profile on the secondary motion of the piston and on the distribution of pressure in the lubricant film are examined. It is shown that piston secondary motion, and in particular rotation of the piston about the gudgeon pin, which might contribute to wear of the cylinder, can be reduced by appropriate positioning of the maximum diameter of the piston skirt in relation to the

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8

Liu, K., Y. B. Xie, and C. L. Gui. "A comprehensive study of the friction and dynamic motion of the piston assembly." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 212, no. 3 (1998): 221–26. http://dx.doi.org/10.1243/1350650981542038.

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A mixed lubrication model based on a two-dimensional average Reynolds equation is presented in this paper. It is developed for use in conjunction with a piston secondary motion analysis. The motion has been studied and the effects of structure parameters and different profiles of piston skirts on the motion are also investigated. The friction force and power loss consisting of piston skirt friction and the friction of the piston ring pack are also given.

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9

Mansouri, S. H., and V. W. Wong. "Effects of Piston Design Parameters on Piston Secondary Motion and Skirt - Liner Friction." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 219, no. 6 (2005): 435–49. http://dx.doi.org/10.1243/135065005x34026.

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In this article, a previously developed and experimentally validated piston secondary motion model has been improved further numerically and applied to understand the detailed interactions between the piston skirt and the cylinder liner for various piston design parameters. The model considers the roughness of the surfaces and the topography of the skirt in both the axial (barrel profile) and circumferential (ovality) directions. Three modes of lubrication: hydro-dynamic, mixed, and boundary lubrication regimes have been considered and the skirt is partially flooded in most cases. Elastic defo

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10

Jin, Zhou, Zhi Zhuang Yu, and Lin Sheng Yang. "Prediction of Nonlinear Contact Force of Piston Skirt and Cylinder Liner under the Function of Clap Force." Applied Mechanics and Materials 226-228 (November 2012): 831–34. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.831.

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The piston skirt and cylinder liner is a coupled contact model, It is of great importance to analyze the contact stress and deformation. Due to the existence of the gap and the lateral clap force between piston skirt and cylinder liner, which leads to the lateral movement. According to the secondary movement and hydrodynamic lubrication theory, the maximum lateral clap force can be obtained in a working condition, before piston crosses TDC, the huge gas pressure makes the piston skirt and cylinder liner collision contact, and creates the enormous clap force, which can aggravate the noise and v

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11

Zhu, Dong, Herbert S. Cheng, Takayuki Arai, and Kyugo Hamai. "A Numerical Analysis for Piston Skirts in Mixed Lubrication—Part I: Basic Modeling." Journal of Tribology 114, no. 3 (1992): 553–62. http://dx.doi.org/10.1115/1.2920917.

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This paper presents a mathematical model for piston skirts in mixed lubrication. It takes into account the effects of surface waviness, roughness, piston skirt surface profile, bulk elastic deformation and thermal distortion of both piston skirts and cylinder bore on piston motion, lubrication and friction. The corresponding computer program developed can be used to calculate the entire piston trajectory and the hydrodynamic and contact friction forces as functions of crack angle under engine running conditions. This paper is the first part of a series of two papers. It gives basic information

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12

Zhou, Xiao Rong, Meng Tian Song, and Gan Wei Cai. "Research of Internal Combustion Engine Piston Skirt Profile Line Effect Based on Dynamics and Tribological Coupling Model." Applied Mechanics and Materials 373-375 (August 2013): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.3.

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This paper mainly based on the coupling relationship between tribological and dynamic behaviors of cylinder liner-piston system to establish dynamics and tribology coupling model of cylinder linerpiston-piston ring, and to analyze the effect of piston skirt profile based on it, providing theoretical basis for determining the effect of piston skirt profiles to piston dynamics and lubrication performance.

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13

Xiaohua, Xu. "Influence of piston-bore clearance on second motion characteristics of piston and skirt wear." Mechanics & Industry 20, no. 2 (2019): 205. http://dx.doi.org/10.1051/meca/2018036.

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The piston dynamic simulation was carried out for the wear of the piston skirt after the test of gasoline engine. In addition, the second motion and wear are studied for the improvement proposal of different cylinder clearances. Results show when the original cylinder clearance is 0.0325–0.0575 mm, the minimum operating clearance of the piston skirt is smaller; it is not good for the formation of lubrication oil film, which causes wear on the thrust side and anti-thrust side of piston skirt. When the cylinder clearance was increased to 0.0400–0.0650 mm, the wear load on the thrust side and ant

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14

Zhang, Jian, Shenggang Guo, Peiyou Xiong, Yanjun Li, Weitao Sun, and Lijun Deng. "Effects of the Piston Skirt’s Surface Structure on Coating Quality and Friction Functions." Coatings 14, no. 11 (2024): 1385. http://dx.doi.org/10.3390/coatings14111385.

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It is necessary to take effective ways to reduce friction and wear grading of a friction pair for the purpose of improving the thermal efficiency and operating reliance of the internal combustion engine. As an effective way, coordinated multi-scaling structure optimization has gained more and more attention, however, its effect on coating adhesion strength remains unclear, and there is less systematic research on its interactive role in friction properties. The paper takes advantage of the stretching test and dynamic simulation calculation to study the influence of piston skirt waviness on coa

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15

Putintsev, C. B., A. G. Kirillov, and A. S. Ratnikov. "Results of modeling the secondary kinematics of the piston in the cylinder of a high-speed diesel engine." Traktory i sel hozmashiny 84, no. 12 (2017): 48–56. http://dx.doi.org/10.17816/0321-4443-66396.

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The relevance of the investigation of the processes of secondary kinematics of the piston in the internal combustion engine’s cylinder is due to their strong influence on such indicators as mechanical losses, wear, noise, vibration, oil consumption, and their insufficient knowledge concerning high-speed piston engines. The purpose of the research was an assessment of the influence on the character of the secondary kinematics of the piston of the high-speed internal combustion engine design factors, operating conditions and lubricant and on this basis finding the ways to improve the lubrication

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16

Tian, Jingyi, Huihua Feng, Yuanjie Feng, Zhengwei Yang, Chengjun Zhu, and Jiegui Li. "Piston dynamics analysis considering skirt-liner dynamic clearance." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 13 (2019): 3538–53. http://dx.doi.org/10.1177/0954407019827339.

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Piston slap force is one of the main sources of mechanical engine noise. To obtain a more accurate determination of the piston slap force and minimize piston slap noise, a new simulation model that considers dynamic clearance of the piston skirt and liner has been established in this study. The skirt-liner dynamic clearance is caused mainly by the elastic deformation and thermal deformation of the piston. Comparing three different models, it was found that the impact of dynamic clearance on the piston slap force is reflected mainly in the medium-high frequency, which is the sensitive frequency

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17

Smirnov, S. V., I. A. Zaev, and A. A. Vorobyev. "Profile Design of a Two-piece Piston Skirt for Internal Combustion Engine." Engines Construction, no. 289 (September 2022): 15–31. http://dx.doi.org/10.18698/jec.2022.3.15-31.

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Ensuring reliable engine operation with minimal friction losses is one of the primary design tasks for a piston design. One of the effective ways to solve this problem is piston skirt profiling. Profiling is aimed at creating conditions for fluid friction in the “piston skirt-cylinder” interface with minimal mounting clearances. We present a mathematical model for studying the influence on the hydrodynamic characteristics of friction and the dynamics of the movement of the piston of the main parameters characterizing the design of the details of the crank mechanism. This model includes a coupl

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18

Lu, Yanjun, Sha Li, Peng Wang, Cheng Liu, Yongfang Zhang, and Norbert Müller. "The Analysis of Secondary Motion and Lubrication Performance of Piston considering the Piston Skirt Profile." Shock and Vibration 2018 (2018): 1–27. http://dx.doi.org/10.1155/2018/3240469.

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The work performance of piston-cylinder liner system is affected by the lubrication condition and the secondary motion of the piston. Therefore, more and more attention has been paid to the secondary motion and lubrication of the piston. In this paper, the Jakobson-Floberg-Olsson (JFO) boundary condition is employed to describe the rupture and reformation of oil film. The average Reynolds equation of skirt lubrication is solved by the finite difference method (FDM). The secondary motion of piston-connecting rod system is modeled; the trajectory of the piston is calculated by the Runge-Kutta me

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19

Delprete, Cristiana, Abbas Razavykia, and Paolo Baldissera. "Detailed analysis of piston secondary motion and tribological performance." International Journal of Engine Research 21, no. 9 (2019): 1647–61. http://dx.doi.org/10.1177/1468087419833883.

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This article presents a detailed analytical model to evaluate piston skirt tribology under hydrodynamic lubrication. The contribution of the piston ring pack lubrication has been taken into account to study piston secondary motion and tribological performance. A system of nonlinear equations comprising Reynolds equation and force equilibrium is solved to calculate piston ring pack friction force and its moment about wrist pin axis. Instantaneous minimum oil film thickness at piston ring/liner interface has been estimated considering different boundary conditions: full Sommerfeld, oil separatio

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20

Ning, Lipu, Xianghui Meng, and Youbai Xie. "Effects of lubricant shear thinning on the mixed lubrication of piston skirt-liner system." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 227, no. 7 (2012): 1585–98. http://dx.doi.org/10.1177/0954406212460610.

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A theoretical analysis is presented for the mixed lubrication of the piston skirt-liner system. The model is developed to consider the shear thinning effect of multigrade lubricant. The friction characteristics of the piston skirt-liner system for both monograde and multigrade lubricants are investigated. It is found that a decrease in the lubricant viscosity is effective in reducing the friction loss. However, the boundary friction at the expansion stroke will increase with low lubricant viscosity. Results in this study show a significant lubricant shear thinning effect on the piston skirt-li

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21

Smirnov, S. V., A. R. Makarov, and R. Kh Abu-Nidzhim. "Mathematical modeling of dynamics of movement of the compound piston in the cylinder of the internal combustion engine." Traktory i sel hozmashiny 84, no. 11 (2017): 57–63. http://dx.doi.org/10.17816/0321-4443-66361.

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Cylinder piston group is the main part of friction in the engine, where usually mechanical losses appear, that is why its work and design should be considered from the point of view of tribology. The task of designing a cylinder - piston group as a friction unit is to select the basic geometric dimensions, the profile of the guide part in the longitudinal and transverse planes, the diametric gap, the coordinates of the piston pin arrangement and the center of mass. The solution of these problems is directly dependent on the possibility of studying the complex plane-parallel motion of the pisto

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22

Jian, Zhang, Deng Lijun, Hao Guannan, and Liu Shiying. "Investigation of wear mechanism of forged steel piston skirt under boundary lubricated conditions." Industrial Lubrication and Tribology 70, no. 7 (2018): 1303–9. http://dx.doi.org/10.1108/ilt-04-2017-0105.

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Purpose With the implementation of new emission standards, the thermal–mechanical coupling load of engine pistons becomes more important. In this case, forged steel material with higher fatigue limit and impact resistance has been applied gradually in piston manufacturing. However, new failure problems emerge, and the wear of skirt under boundary lubrication conditions is an essential problem which needs to be solved urgently. Design/methodology/approach In this research, the abrasion testing machine was used to simulate the wear behavior under different conditions of normal pressure, relative

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23

Hongwei, Yan, Yang Jin, and Zhang Baocheng. "Analysis of the Influences of Piston Crankshaft Offset on Piston Secondary Movements." Open Mechanical Engineering Journal 9, no. 1 (2015): 933–37. http://dx.doi.org/10.2174/1874155x01509010933.

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This paper takes dynamics analysis on the piston and the dynamic lubrication theory on the skirt and the ring of piston as the basis. Using AVL Glide software, through the establishment of the analysis model of the piston secondary movements, this study focuses on the effects of the crankshaft bias on piston secondary movements’ characteristics. This paper takes 5 different offsets, by comparing the piston lateral displacement, transverse movement speed, transverse acceleration, swinging angle, swing angular velocity and angular acceleration, finds out the relationships between crank offset va

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24

Delprete, Cristiana, and Abbas Razavykia. "Piston dynamics, lubrication and tribological performance evaluation: A review." International Journal of Engine Research 21, no. 5 (2018): 725–41. http://dx.doi.org/10.1177/1468087418787610.

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Mechanical power loss of lubricated and bearing surfaces serves as an attractive domain for study and research in the field of internal combustion engines. Friction reduction at lubricated and bearing surface is one of the most cost-effective ways to reduce gas emission and improve internal combustion engines’ efficiency. This thus motivates automotive industries and researchers to investigate tribological performance of internal combustion engines. Piston secondary motion has prime importance in internal combustion engines and occurs due to unbalanced forces and moments in a plane normal to t

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25

He, Zhenpeng. "Piston skirt friction loss and dynamic analyses based on FEM method." Industrial Lubrication and Tribology 70, no. 4 (2018): 656–72. http://dx.doi.org/10.1108/ilt-12-2016-0320.

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Purpose The analysis carried out in this study can provide guidance for manufacturers and researchers to design a piston for the development of engines. Design/methodology/approach Running conditions for pistons have become very severe because of the high combustion pressure and increase in piston temperature in the past 10 years. The precision of the model has a great effect on the power transmission, vibration noise emission. In this paper, the model was established with lubrication and dynamic governing equations, which were solved using finite element method coupled with Runge–Kutta method

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26

Zhao, Bo, Shijun Wang, Peng Xiao, et al. "The Tribo-Dynamics Performance of the Lubricated Piston Skirt–Cylinder System Considering the Cylinder Liner Vibration." Lubricants 10, no. 11 (2022): 319. http://dx.doi.org/10.3390/lubricants10110319.

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The tribo-dynamics performance of the piston–cylinder system is affected by multiple physical fields. The current work presents a novel multiphysics coupling method to model and analyze the lubricated piston skirt–cylinder interface considering the cylinder liner vibration. This method is implemented by coupling multibody dynamics of the crank-connecting rod–piston–cylinder system, the heat transfer of the cylinder and piston, hydrodynamics lubrication on the skirt–cylinder interface, vibration of the cylinder liner, and thermal as well as elastic deformation in the piston–cylinder system toge

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27

Putintsev, Sergey V., Sergey A. Anikin, Sofia P. Demenkova, and Sofya S. Strelnikova. "Calculation of the required minimum of a motor oil level on cylinder-piston group moving surfaces of the automotive diesel." Traktory i sel hozmashiny 89, no. 1 (2022): 53–65. http://dx.doi.org/10.17816/0321-4443-100063.

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BACKGROUND: Theme of this article is actual because issues of the reliable and cost-effective opera-tion of augmented automotive piston engines are still not solved. An important aspect of solving the problem is rational oil supply of the cylinder-piston group. AIMS: The purpose of this work is the required minimum motor oil level estimation for the hydrodynamic lubrication of the cylinder-piston skirt pair. There were set and solved the tasks of determining the volume of motor oil capable of filling: 1) cavities of the flat-topped surface of the cylinder; 2) a raised surface of the pist

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28

Forero, Jorge Duarte, Guillermo Valencia Ochoa, and Wlamyr Palacios Alvarado. "Study of the Piston Secondary Movement on the Tribological Performance of a Single Cylinder Low-Displacement Diesel Engine." Lubricants 8, no. 11 (2020): 97. http://dx.doi.org/10.3390/lubricants8110097.

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The present study aims to analyze the secondary movement of the piston considering the deformations present in the piston skirt, the hydrodynamic lubrication, and the effects of the clearances in the connecting rod bearings. The analysis of the piston movement is performed by developing a mathematical model, which was used to evaluate the dynamic characteristics of the piston movement, the slap force on the piston skirt, the effect of the secondary piston movement on the connecting rod, and the influence of clearances in the connecting rod bearings and in the piston. For the study, the geometr

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29

Guo, Yin Biao, Hai Bin Huang, and Jian Hua Lin. "The Variable Cross-Section Helix Turning Trajectory Algorithm Used on the Middle-Convex and Varying Ellipse Piston Skirt." Advanced Materials Research 311-313 (August 2011): 2340–43. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.2340.

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In order to turning the skirt of middle-convex and varying ellipse piston, this paper proposes a Variable Cross-section Helix Turning Trajectory (VCHTT) algorithm. it divide the turning trajectory of the piston skirt into transversal and helix, then obtain the coordinates of ellipse transversal cutter-contact points on the basis of centric polar radius arc interpolation (CPRAI) algorithm, and uses line surface intersection method to obtain the coordinates of helix cutter-contact points on the middle-convex and varying ellipse piston skirt. At last，merge two coordinates matrices to obtain the f

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Asoyan, Arthur R., Alexander S. Gorshkov, and Ani H. Israelyan. "Less wear on the piston skirts of internal combustion engines." RUDN Journal of Engineering Researches 21, no. 3 (2020): 175–80. http://dx.doi.org/10.22363/2312-8143-2020-21-3-175-180.

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A significant proportion of mechanical losses in internal combustion engines accounted for mechanical losses in the cylinder-piston group. Depending on the operating modes of the internal combustion engine, contact interaction in the piston-cylinder pair is possible, which leads to wear of the working surfaces of the resource-determining elements and a decrease in the operational life of the power unit as a whole, in connection with which the reduction of friction losses in the internal combustion engine elements and the piston - cylinder liner coupling in particular is relevant. Both domestic

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Putintsev, S. V., and A. G. Ageev. "Efficiency checking of use of stiffening ribs for piston skirt of a low-sized diesel engine." Traktory i sel hozmashiny 83, no. 11 (2016): 35–39. http://dx.doi.org/10.17816/0321-4443-66268.

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The study actuality is connected with a problem of high mechanical losses due to friction in naturally aspirated high-speed low-cylinder four-stroke diesel engines. The research aims to check the efficiency of application of an experimental piston with rigid skirt that according to preliminary data provides the decrease of mechanical losses in the cylinder-piston group. The check method consists in comparison of benchmarks of a serial piston and an experimental one. Following indices are accepted as benchmarks: the piston friction force and mechanical losses formed by its work; the temperature

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Wang, Yi, Limin Wu, Shuo Liu, Mei Li, and Yi Cui. "Fretting fatigue optimization of piston skirt top surface of marine diesel engine." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 4 (2018): 1453–69. http://dx.doi.org/10.1177/0954406218771723.

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Composite pistons are often used in highly rated marine diesel engines. Fretting usually occurs on the mating surfaces of piston crown and skirt due to alternating loads. A finite element contact model is introduced to calculate the temperature and stress distribution in the composite piston of a marine diesel engine. The Archard model and Smith–Watson–Topper parameter (a prediction parameter of fretting fatigue, also called SWT parameter for short), which is used as fretting wear and fatigue criteria, are calculated according to the stress and strain variation and relative slip on the contact

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Meng, Zhen, Linfeng Zhang, and Tian Tian. "Study of Break-In Process and its Effects on Piston Skirt Lubrication in Internal Combustion Engines." Lubricants 7, no. 11 (2019): 98. http://dx.doi.org/10.3390/lubricants7110098.

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The piston skirt is one of the main contributors to the total mechanical loss in internal combustion engines. Usually, the skirt friction experiences a rapid change during the break-in period largely due to the wear of the machine marks or roughness against soft coatings. It is thus important to consider the effect of the change of the roughness for a realistic prediction of the piston skirt friction and system optimization. In this work, an existing model of piston skirt lubrication was improved with the consideration of a breaking in process for the most commonly used triangle machine marks.

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SUZUKI, Toyohiko, Yoshio FUJIMOTO, Yoshitaka OCHIAI, and Tadao IKIHARA. "Numerical simulation of oil film distribution over a piston skirt. Effect of piston skirt profile." Transactions of the Japan Society of Mechanical Engineers Series C 55, no. 511 (1989): 768–73. http://dx.doi.org/10.1299/kikaic.55.768.

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Ahmed, Kellaci, Khelidj Benyoucef, Mazouzi Redha, and Lounis Mourad. "The Effect of Piston Skirt Profile on EHD Lubrication in an Internal Combustion Engine." Advanced Materials Research 787 (September 2013): 704–10. http://dx.doi.org/10.4028/www.scientific.net/amr.787.704.

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This investigation is concerned with the elastohydrodynamic lubrication of the piston skirt / cylinder link of an internal combustion engine. In such compliant structures, the thickness of the lubricant film depends not only on the elastic deformation elements of the mechanism but also on their profiles. We have developed a computer program to study the effect of the profile of the piston skirt on the lubricant film. This program is based on a two-dimensional description of the lubricant film flow and a three-dimensional deformation of solids. The Reynolds equation defines the behavior of hydr

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36

Graddage, M. J., F. J. Czysz, and A. Killinger. "Field Testing to Validate Models Used in Explaining a Piston Problem in a Large Diesel Engine." Journal of Engineering for Gas Turbines and Power 115, no. 4 (1993): 721–27. http://dx.doi.org/10.1115/1.2906765.

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Two crankcase explosions occurred within one month in diesel engines that drive large emergency generator sets at a nuclear power plant in Eastern Pennsylvania. As a result, the electric utility conducted an extensive investigation to determine the root cause(s) of the problem. Initial inspections confirmed that the crankcase explosions were the result of pistons and liners becoming overheated. The technical challenge was to establish why the pistons and liners were overheating when other engines of the same type did not appear to have the problem in the same duty. Analytical models of piston

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Zhu, Dong, Yuan-Zhong Hu, Herbert S. Cheng, Takayuki Arai, and Kyugo Hamai. "A Numerical Analysis for Piston Skirts in Mixed Lubrication: Part II—Deformation Considerations." Journal of Tribology 115, no. 1 (1993): 125–33. http://dx.doi.org/10.1115/1.2920965.

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This paper presents a mathematical model for piston skirts in mixed lubrication. It takes into account the effects of surface waviness, roughness, piston skirt surface profile, bulk elastic deformation and thermal distortion of both piston skirts and cylinder bore on piston motion, lubrication and friction. The corresponding computer program developed can be used to calculate the entire piston trajectory and the hydrodynamic and contact friction forces as functions of crank angle under engine running conditions. Complete distributions of the oil film thickness and elastic deformation as well a

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38

Azetsu, Akihiko, and Masayuki Ochiai. "Development And Application Of A New Visualization Technique Using Photochromism For Transport Process Of Lubricating Oil Around The Engine Piston." Proceedings of the International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics 21 (July 8, 2024): 1–15. http://dx.doi.org/10.55037/lxlaser.21st.141.

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A new visualization technique using photochromism for the movement of oil film was developed and applied to an optical gasoline engine. A photochromic dye was dissolved in the oil and an arbitrary position of the oil film was illuminated by UV laser light, which makes a marker in the oil film via a photochromic reaction. The lifetime of color change by photochromism is relatively long and therefore, by tracking the movement of a marker makes it possible to visualize the movement of oil film directly. The color density was quantified based on the absorbance calculated from images taken before a

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39

Mazouzi, Ridha, Ahmed Kellaci, and Abdelkader Karas. "Effects of piston design parameters on skirt-liner dynamic behavior." Industrial Lubrication and Tribology 68, no. 2 (2016): 250–58. http://dx.doi.org/10.1108/ilt-07-2015-0103.

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Purpose – This paper aims to study the effect of piston skirt design parameters on the dynamic characteristics of a piston–cylinder contact. Design/methodology/pproach – This paper focuses on an analysis of the piston dynamic response. The oil-film pressure and the structural deformation were approximated, respectively, by finite difference method and finite element method. Findings – The results show that the design parameters such as clearance, offset and the axial location of piston pin have a great influence on the dynamics of the piston and hence on the piston slap phenomenon and the fric

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40

Marchenko, A. P., V. O. Pylyov, O. U. Linkov, and S. V. Lykov. "COMPARATIVE EVALUATION OF THE CREEP OF PISTON ALUMINUM ALLOYS." Internal Combustion Engines, no. 2 (July 26, 2021): 43–49. http://dx.doi.org/10.20998/0419-8719.2021.2.06.

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The paper deals with the issues of reliability of piston materials in the process of increasing engine power. It is precisely the increase in the liter power of engines while ensuring environmental and economic requirements that is today one of the main areas of work in engine manufacturing. Studies have shown that material creep has significantly affects on the reliability of internal combustion engine parts. The most thermally loaded engine element is a piston. The main critical areas for it can be identified: the edge of the combustion chamber, the area of the piston rings and the piston sk

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41

Tan, Yeow-Chong, and Zaidi Mohd Ripin. "Technique to determine instantaneous piston skirt friction during piston slap." Tribology International 74 (June 2014): 145–53. http://dx.doi.org/10.1016/j.triboint.2014.02.014.

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42

Makarov, A. R., S. V. Smirnov, and S. V. Osokin. "Mathematical modeling of piston movement in a cylinder." Izvestiya MGTU MAMI 8, no. 2-1 (2014): 24–30. http://dx.doi.org/10.17816/2074-0530-67648.

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The article proposes a mathematical model of the dynamics of piston movement in a cylinder in a layer of grease. The basic equations of the piston movement, the equations describing the problem of elastohydrodynamic friction of the piston skirt in a cylinder, and the algorithm of their simultaneous solution are considered.

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43

Guo, Pei Pei, and Wen Zhi Gao. "FEM Analysis on Block Vibration of Diesel Engine." Applied Mechanics and Materials 155-156 (February 2012): 1086–89. http://dx.doi.org/10.4028/www.scientific.net/amm.155-156.1086.

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In order to evaluate the vibration history of the engine block and predict its surface vibration status, a FEM model on 4102BZQ Diesel Engine block was constructed. Based on the cylinder pressure curve of 4102BZQ, some important exciting forces applied on the block were calculated. ANSYS software was used to compute and analyze dynamic response of the block. Simultaneously the node displacement history of the block model was obtained. The results of calculation and analysis showed that the vibration of the block skirts was more intense and the skirt was the main factor to influence the reliabi

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44

Meng, Fanming, Minggang Du, Xianfu Wang, Yuanpei Chen, and Qing Zhang. "Effect of axial piston pin motion on tribo-dynamics of piston skirt-cylinder liner system." Industrial Lubrication and Tribology 70, no. 1 (2018): 140–54. http://dx.doi.org/10.1108/ilt-09-2016-0229.

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Purpose The purpose of this study is to investigate the effects of the axial piston pin motion on the tribological performances of the piston skirt and cylinder liner vibration for an internal combustion engine (ICE) under different operation conditions. Design/methodology/approach The dynamic equation for the piston incorporating into axial piston pin motion is derived first. Then, the proposed equation and associated lubrication equations are solved using the Broyden algorithm and difference method, respectively. Moreover, the axial motion of the piston pin and its slap on the cylinder liner

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Zhang, Bao Cheng, Tong Li, Hai Fei Zhan, and Yuan Tong Gu. "Impact of the Piston Secondary Motion on its Slap Force." Applied Mechanics and Materials 553 (May 2014): 582–87. http://dx.doi.org/10.4028/www.scientific.net/amm.553.582.

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A theoretical model is developed for the analysis of piston secondary motion. Based on this model, the slap force of a specific L6 diesel engine was compared when considering different boundary conditions, such as lubricating oil on cylinder liner, surface roughness, deformation of cylinder liner and piston skirt. It is concluded that it is necessary to consider the secondary motion of piston in the analysis of the inner excitation for an internal combustion engine. A more comprehensive consideration of the boundary condition (i.e., more close to the actual condition) will lead to a smaller ma

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46

Marchenko, A. P., and V. V. Pylyov. "THE PROBLEMAIICS OF ENSURING THE RELIABILITY OF THE SIDE SURFACE OF THE PISTONS OF BOOSTED ICES." Internal Combustion Engines, no. 1 (September 2, 2024): 23–33. http://dx.doi.org/10.20998/0419-8719.2024.1.04.

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Prospective directions and trends in the development of special-purpose engines are analyzed. An increase in swept volume power density of engines leads to a critical raise in thermal and mechanical stress in the engine structural elements and to a corresponding reduction in its resource. Pistons are among the elements of boosted engines that are most prone to failure. Among the characteristic critical zones of the piston design, in which losses of parametric and physical reliability were observed, a separate critical zone on the loaded and unloaded side of the piston skirt near the piston pin

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Li, Cheng Ying, Jin Zhang, and Wei Wei. "Mechanism Analysis of Magnetostrictive Turning for Piston Skirt Processing." Advanced Materials Research 189-193 (February 2011): 2134–38. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.2134.

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The paper presents a turning method by using the magnetostrictive transducer as drive source, this method set up a self-made magnetostrictive tool-post on the CNC lathe. Theoretically, based on the theory analysis of piston skirt varying to oval cross section and middle-convex mold line, this paper expounds the reality of the magnetostrictive turning machining mechanism of middle-convex and varying surface. Experimental results show that this method can not only satisfy the requirements of design, but also simplify workpiece process, establishing theoretical and experimental basis for magnetos

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Wang, Chun Yang, Peng Zhai, Hong Yang Zhang, and Kun Zhang. "Algorithm of Transition Curve of Shaped Piston Cylindrical Cross Section." Applied Mechanics and Materials 740 (March 2015): 154–57. http://dx.doi.org/10.4028/www.scientific.net/amm.740.154.

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Piston is one of important parts of engine. It is meaningful to modify piston machining. The motion characteristics of shaped-piston cylindrical surface and profile were analyzed. A fitting transition curve method for the piston skirt cylindrical profile was proposed, which could satisfy requirements of smooth and non-impact, especially at the starting point and the ending point. And the machining profile data were generated by interpolating in Matlab. This result provides references for the piston design.

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49

Qin, Yuexia. "New method to measure piston skirt dimensions." Chinese Journal of Mechanical Engineering (English Edition) 17, no. 03 (2004): 368. http://dx.doi.org/10.3901/cjme.2004.03.368.

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Krzyzak, Zenon, and Pawel Pawlus. "‘Zero-wear’ of piston skirt surface topography." Wear 260, no. 4-5 (2006): 554–61. http://dx.doi.org/10.1016/j.wear.2005.03.038.

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