The Bifractal Stratified Characterization of a Plateau Honing Cylinder Liner Surface Profile During the Wearing Process

Fractals ◽  
2021 ◽  
Author(s):  
Chunling Wei ◽  
Hua Zhu ◽  
Shihui Lang
Keyword(s):  
Surface Profile ◽  
Cylinder Liner ◽  
Liner Surface

Functional Filtering and Performance Correlation of Plateau Honed Surface Profiles

2005 ◽  
Vol 127 (1) ◽  
pp. 193-197 ◽  
Author(s):  
B. Muralikrishnan ◽  
J. Raja
Keyword(s):  
Surface Characterization ◽  
Cylinder Liner ◽  
Core Layer ◽  
Complex Nature ◽  
Morphological Filters ◽  
Effect Model ◽  
Liner Surface ◽  
Surface Profiles ◽  
And Performance

Plateau honing produces a unique texture on cylinder liner surface. This surface is engineered to simulate the actual running in process of the engine and results in a core layer superimposed on valleys. Because of the complex nature of the surface, characterization of such surfaces is very different from traditional surface texture analysis. Different filtering techniques have been employed to remove waviness from these profiles. Parameters are subsequently computed from the bearing area curve of the roughness profile. With recent progress in filtering of surface profiles, we propose a functional analysis approach based on morphological filters. The advantage of this technique is the clear separation of the core texture from the valleys resulting in better correlation with process and functional measures. A number of profiles are collected from two sets of liners with different performance characteristics. A cause effect model is built and used for performance prediction.

Parameter correlation study of cylinder liner roughness for production and quality control

2008 ◽  
Vol 222 (11) ◽  
pp. 1475-1487 ◽  
Author(s):  
B-G Rosen ◽  
C Anderberg ◽  
R Ohlsson
Keyword(s):  
Three Dimensional ◽  
Cylinder Liner ◽  
Correlation Study ◽  
Two Dimensional ◽  
Strong Correlations ◽  
Intrinsic Variability ◽  
Dimensional Parameters ◽  
Liner Surface ◽  
Highly Correlated

Surface roughness plays an important role in the control of emissions and friction losses in the cylinder liner—piston ring system as well as securing economically favourable manufacturing. A number of different commercial cylinder liner types have been characterized using traditional two-dimensional stylus and ISO parameters together with the latest three-dimensional characterization. The results highlight the weak and strong correlations between different families of parameters traditionally used for liner surface specifications. The bearing curve based Rxq and Rk parameter families have been evaluated and show systematic and consistent differences when characterizing the same surface features when trying to establish independent characterization of the highly stratified, two-process cylinder liner surfaces. No significant improvement in discrimination results from using ensemble averages. Presentation of correlations in the form of topological diagrams helps to show when parameters with a high intrinsic variability can be effectively replaced by other more robust parameters with which they have a high correlation. Plateau parameters are in general more highly correlated than valley parameters. Three-dimensional parameters show high internal correlations and also correlate highly with some corresponding two-dimensional parameters.

scholarly journals Mutual Effect of Groove Size and Anisotropy of Cylinder Liner Honed Textures on Engine Performances

2014 ◽  
Vol 966-967 ◽  
pp. 175-183 ◽  
Author(s):  
Mohammed Yousfi ◽  
Sabeur Mezghani ◽  
Ibrahim Demirci ◽  
Mohamed El Mansori
Keyword(s):  
Mutual Effect ◽  
Cylinder Liner ◽  
Texture Features ◽  
Groove Depth ◽  
Oil Consumption ◽  
Hydrodynamic Friction ◽  
Liner Surface ◽  
Ring Pack ◽  
Mixed Lubrication Regime ◽  
Cylinder Bore

The cylinder liner surface texture, widely generated by the honing technique, contributes a lot on engine functional performances (friction, oil consumption, running-in, wear etc.). In order to improve these functional performances, different honing processes are being developed. These different honing processes generate surfaces with various texture features characteristics (roughness, valleys depth, valley width, cross hatch angle, etc.). This paper addresses a comparison of ring-pack friction for cylinder texture with different cross-hatch angles and valley sizes. It takes in consideration the mutual effect of valley depth and honing angle. A numerical model is developed to predict friction within the cylinder ring-pack system in mixed lubrication regime and a morphological method is used to characterize groove depth. The results show the effect of different honing variables (rotation speed, stroke speed and indentation pressure) on cylinder bore surface textures and hydrodynamic friction of the ring-pack system.

Optimization of cylinder liner surface finish by slide honing

2012 ◽  
Vol 226 (4) ◽  
pp. 575-584 ◽  
Author(s):  
Z Dimkovski ◽  
F Cabanettes ◽  
H Löfgren ◽  
C Anderberg ◽  
R Ohlsson ◽  
...  
Keyword(s):  
Surface Finish ◽  
Cylinder Liner ◽  
Liner Surface

scholarly journals Wear Behavior of CuSn Coated Piston Ring Sliding against Nodular Cast Iron Cylinder Liner under Heavy-Duty Conditions

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 139 ◽  
Author(s):  
Wenhua Li ◽  
Baihong Yu ◽  
Yutao Lv ◽  
Yan Shen ◽  
Ruoxuan Huang ◽  
...  
Keyword(s):  
Cast Iron ◽  
Piston Ring ◽  
Chemical Elements ◽  
Wear Behavior ◽  
Cylinder Liner ◽  
Nodular Cast Iron ◽  
Wear Loss ◽  
Heavy Duty ◽  
Liner Surface ◽  
Cr Coating

In order to investigate the friction and wear behavior between the nodular cast iron cylinder liner (Fe) and CuSn coated piston ring under heavy-duty conditions, piston rings with chromium(Cr) coating and CuSn-Cr coating were tested using the piston ring reciprocating liner test rig at the simulated working conditions of 56 MPa, 200 r/min, 190 °C. Compared with the Cr/Fe pair, the CuSn coating consumption of the CuSn-Cr/Fe pair made friction coefficient and cylinder wear loss decrease by 2.8% and 51.5%, respectively. Different size Sn patches worn from the CuSn coated piston ring were embedded into the cylinder liner surface based on the surface topography. This process was shown to reduce the surface roughness of a cylinder liner and form flatter plateau structures. Chemical elements analysis indicated that plateau structures on the cylinder liner surface matched with CuSn-Cr coated ring are helpful to promote the tribo-chemical reaction and generate the reactive products to protect the mutually contacted asperities.

Microscopic TV Holography for Microsystems Metrology

2011 ◽  
Vol 61 (5) ◽  
pp. 491 ◽  
Author(s):  
Upputuri Paul Kumar ◽  
U. Somasundaram ◽  
M. P. Kothiyal ◽  
Nandigana Krishna Mohan
Keyword(s):  
Quantitative Measurement ◽  
Imaging System ◽  
Surface Profile ◽  
Font Size ◽  
Micro Electro Mechanical Systems ◽  
Microscopic Imaging ◽  
Mode Of Operation ◽  
Mems Technology ◽  
Working Distance

<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <mce:style><! /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} --> <!--[endif] --> <p class="MsoNormal" style="text-align: justify;">The continuously advancing Micro-Electro-Mechanical Systems (MEMS) technology requires a robust non-contact quantitative measurement system for the characterization of their performance, reliability and integrity. A TV holographic system with long working distance microscope is developed for the static, dynamic and 3-D surface profile characterization of Microsystems. The system can be operated either in <em>continuous</em> or <em>stroboscopic</em> illumination mode of operation.<span> </span>In this paper we present the development of a microscopic imaging system and its applications <span style="color: black;">for </span>Microsystems Metrology.</p><p class="MsoNormal" style="text-align: justify;"><strong>Defence Science Journal, 2011, 61(5), pp.491-498</strong><strong><strong>, DOI:http://dx.doi.org/10.14429/dsj.61.908</strong></strong></p> <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <mce:style><! /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} --> <!--[endif] --> <p class="MsoNormal" style="text-align: justify;"> </p>

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