Wear resistance of a cylinder sleeve-piston ring rubbing pair

1984 ◽  
Vol 26 (7) ◽  
pp. 533-537
Author(s):  
V. K. Sedunov ◽  
Yu. K. Evseev ◽  
N. I. Il'in
Keyword(s):  
Wear Resistance ◽  
Piston Ring ◽  
Rubbing Pair ◽  
Cylinder Sleeve

Influence of positive texturing on friction and wear properties of piston ring-cylinder liner tribo pair under lubricated conditions

2019 ◽  
Vol 71 (4) ◽  
pp. 515-524 ◽  
Author(s):  
Venkateswara Babu P. ◽  
Ismail Syed ◽  
Satish Ben Beera
Keyword(s):  
Wear Resistance ◽  
Internal Combustion Engine ◽  
Friction And Wear ◽  
Piston Ring ◽  
Combustion Engine ◽  
Cylinder Liner ◽  
Internal Combustion ◽  
Tribological Performance ◽  
Friction Reduction ◽  
Content Type

Purpose In an internal combustion engine, piston ring-cylinder liner tribo pair is one among the most critical rubbing pairs. Most of the energy produced by an internal combustion engine is dissipated as frictional losses of which major portion is contributed by the piston ring-cylinder liner tribo pair. Hence, proper design of tribological parameters of piston ring-cylinder liner pair is essential and can effectively reduce the friction and wear, thereby improving the tribological performance of the engine. This paper aims to use surface texturing, an effective and feasible method, to improve the tribological performance of piston ring-cylinder liner tribo pair. Design/methodology/approach In this paper, influence of positive texturing (protruding) on friction reduction and wear resistance of piston ring surfaces was studied. The square-shaped positive textures were fabricated on piston ring surface by chemical etching method, and the experiments were conducted with textured piston ring surfaces against un-textured cylinder liner surface on pin-on-disc apparatus by continuous supply of lubricant at the inlet of contact zone. The parameters varied in this study are area density and normal load at a constant sliding speed. A comparison was made between the tribological properties of textured and un-textured piston ring surfaces. Findings From the experimental results, the tribological performance of the textured piston ring-cylinder liner tribo pair was significantly improved over a un-textured tribo pair. A maximum friction reduction of 67.6 per cent and wear resistance of 81.6 per cent were observed with textured ring surfaces as compared to un-textured ring surfaces. Originality/value This experimental study is helpful for better understanding of the potency of positive texturing on friction reduction and wear resistance of piston ring-cylinder liner tribo pair under lubricated sliding conditions.

Development of a Laser Fluorescence Technique For Measuring Piston Ring Oil Film Thickness

1980 ◽  
Vol 102 (2) ◽  
pp. 165-170 ◽  
Author(s):  
L. L. Ting
Keyword(s):  
Light Intensity ◽  
Film Thickness ◽  
Piston Ring ◽  
Laser Fluorescence ◽  
Engine Oil ◽  
Fluorescent Light ◽  
Fluorescence Technique ◽  
Thickness Change ◽  
Oil Film ◽  
Cylinder Sleeve

A single cylinder engine equipped with a transparent cylinder sleeve has been used to develop a technique to make visual investigations of piston ring lubrication behavior and engine oil loss mechanism. This paper describes this apparatus and the development of a laser excited oil fluorescence technique for measuring the oil film thickness change between the piston rings and the transparent cylinder sleeve wall. The amount of oil accumulated in the piston-cylinder clearance spaces above and below the ring pack, and those in the inter-ring spaces, can also be observed. Preliminary results showing oil fluorescence light intensity traces indicate that this technique works very well. Quantitative oil film thickness data should be readily obtainable from these traces once the fluorescent light intensity is calibrated.

scholarly journals INCREASING THE CURRENCY RESISTANCE OF CYLINDER-PLASTING OF PYSTON PUMPS BY PLASMA METHOD

2021 ◽  
Vol 08 (04) ◽  
pp. 82-86
Author(s):  
Nazim Ibrahimov Nazim Ibrahimov ◽  
Maleyka Mammadova Maleyka Mammadova
Keyword(s):  
Wear Resistance ◽  
Plasma Spraying ◽  
Coating Thickness ◽  
Surface Hardness ◽  
Piston Pump ◽  
Plasma Method ◽  
Nickel Chromium ◽  
Pump Cylinder ◽  
Cylinder Liners ◽  
Cylinder Sleeve

The article examines the study of increasing the wear resistance of the cylinder-sleeve of a piston pump using the developed technology of plasma spraying. Wear-resistant and durable coatings of nickel, chromium, molybdenum and tungsten were obtained on the surface of the piston pump cylinder-sleeve. A graph of the dependence of the coating thickness depending on the surface hardness of the cylinder-sleeve is presented. According to the graph, depending on the hardness, you can determine the wear resistance of the coating surface of the cylinder-sleeve. Keywords: piston pump, cylinder liners, plasma method, nickel, chromium, molybdenum, tungsten, wear resistance, coating thickness, hardness, graphical dependence

scholarly journals Developing technology of creating wear-resistant ceramic coating for internal combustion engine cylinder sleeve

2021 ◽  
Vol 34 (04) ◽  
pp. 1420-1430
Author(s):  
Anatoliy V. Chavdarov ◽  
Viatcheslav A. Denisov
Keyword(s):  
Internal Combustion Engine ◽  
Piston Ring ◽  
Ceramic Coating ◽  
Combustion Engine ◽  
Microarc Oxidation ◽  
Internal Combustion ◽  
Wear Resistant ◽  
Coating Formation ◽  
Cylinder Sleeve ◽  
Resistant Ceramic

This paper presents the results of testing a wear-resistant ceramic coating on the work surface of an internal combustion engine (ICE) cylinder’s sleeve. A combined coating formation technology is described that consists in applying an aluminum layer to the sleeve’s work face by gas dynamic spraying and then covering this face with a ceramic layer by microarc oxidation (MAO). A tenfold reduction in the reinforced sleeve has been determined by the accelerated comparative wear rig tests of reference (new) sleeve-piston ring coupling specimens and reinforced specimens with a combined coating. The supplementation of nanoparticle admixture to MAO coating reduces the friction factor between the cylinder sleeve face and the piston ring by 25-30%. The proposed technology can be used to reinforce work surfaces of new cylinder sleeves and recover worn out ones.

PLC-Based Automatic Plating Line Design

2012 ◽  
Vol 562-564 ◽  
pp. 725-728
Author(s):  
Jian Lin
Keyword(s):  
Wear Resistance ◽  
Supervisory Control ◽  
Manufacturing Process ◽  
Piston Ring ◽  
Data Acquisition System ◽  
Working Environment ◽  
Urgent Problem ◽  
Corrosion Properties ◽  
Line Design ◽  
Industrial Pc

In the vehicle engine's part, piston ring is a important part, which working environment is hard. It’s surface need to be enhanced so that to gain highly wear resistance and anti-corrosion properties. But in the piston ring manufacturing process, how to improve the working environment is a real urgent problem. This article present a design for SCADA(Supervisory Control and Data Acquisition) system using for automatic electroplating line, which use industrial PC , PLC and other components, connected by industrial network. Some detail technology are introduced.

Study on Wear Mechanism of Chromium Carbide Coating Reinforced Cast Iron Cylinder Sleeve

2013 ◽  
Vol 273 ◽  
pp. 124-128
Author(s):  
Zi Bo Ye ◽  
Sheng Guan Qu ◽  
Yong Hu ◽  
Guang Hong Wang
Keyword(s):  
Cast Iron ◽  
Piston Ring ◽  
Combustion Engine ◽  
Tensile Force ◽  
Cylinder Liner ◽  
Tribological System ◽  
Lubrication Condition ◽  
Worn Surface ◽  
Cylinder Sleeve ◽  
Dynamic Coefficient Of Friction

In tribological system of internal combustion engine, cylinders and pistons were in high temperature, pressure and load working status. An SRV IV wear tester was used to measure dynamic coefficient of friction by simulating working condition of cylinder liner and piston ring. The worn surface topography was observed through scanning electron microscope and metallography. The results show that loads had little effect on the friction coefficient under oil lubrication. Cylinder with the high-chromium carburizing ring in pairs displayed wear in the form of plastic deformation, while cylinder with the phosphide cast iron ring in pairs displayed adhesive wear. The piston ring was subjected to shear stress and tensile force under dry friction condition and deformed into tapering burr. Lubricants played a bearer role under lubrication condition; therefore, surface borderline of piston ring was relatively flat.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

Predictive tool for frictional performance of piston ring-pack/liner conjunction

2019 ◽  
Vol 13 (3) ◽  
pp. 5513-5527
Author(s):  
J. W. Tee ◽  
S. H. Hamdan ◽  
W. W. F. Chong
Keyword(s):  
Film Thickness ◽  
Mathematical Models ◽  
Piston Ring ◽  
Published Data ◽  
Predictive Tool ◽  
Frictional Losses ◽  
Fundamental Understanding ◽  
Minimum Film Thickness ◽  
Piston Ring Pack ◽  
Ring Pack

Fundamental understanding of piston ring-pack lubrication is essential in reducing engine friction. This is because a substantial portion of engine frictional losses come from piston-ring assembly. Hence, this study investigates the tribological impact of different piston ring profiles towards engine in-cylinder friction. Mathematical models are derived from Reynolds equation by using Reynolds’ boundary conditions to generate the contact pressure distribution along the complete piston ring-pack/liner conjunction. The predicted minimum film thickness is then used to predict the friction generated between the piston ring-pack and the engine cylinder liner. The engine in-cylinder friction is predicted using Greenwood and Williamson’s rough surface contact model. The model considers both the boundary friction and the viscous friction components. These mathematical models are integrated to simulate the total engine in-cylinder friction originating from the studied piston ring-pack for a complete engine cycle. The predicted minimum film thickness and frictional properties from the current models are shown to correlate reasonably with the published data. Hence, the proposed mathematical approach prepares a simplistic platform in predicting frictional losses of piston ring-pack/liner conjunction, allowing for an improved fundamental understanding of the parasitic losses in an internal combustion engine.

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