Piston Ring Pack and Cylinder Wear Modelling

Tomanik, Eduardo; Nigro, Francisco Emílio Baccaro

doi:10.4271/2001-01-0572

Cited by 19 publications

(8 citation statements)

References 10 publications

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“…These are followed by two papers describing measurement techniques that address oil film thickness and inter-ring pressures and blowby respectively (see Tomanik and Nigro 2001;Furuhama et al 1979;Veettil and Shi 2011;Richardson and Borman 1991;Dursunkaya et al 1993). The following three papers discuss ring dynamic analysis and measurement.…”

Section: Recommendations For Further Readingmentioning

confidence: 99%

Vehicular Engine Design

Hoag

Dondlinger²

2016

Powertrain

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Section: Recommendations For Further Readingmentioning

confidence: 99%

Vehicular Engine Design

Hoag

Dondlinger²

2016

Powertrain

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“…For the ring/liner wear, the interested reader can refer to the literature. [15][16][17] Fluid mechanics 1. Governing equations Figure 1 illustrates the overview of the ring/liner conjunction as well as the statistical characterization of rough surface contact.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…The wear rate-related parameter is used to evaluate the wear rate involved in the different zones of cylinder liner. The wear rate-related parameter is defined according to equation (17). The corresponding expression is given as follows…”

Section: Under Engine Like Conditionmentioning

confidence: 99%

Modeling and prediction of the running-in behavior of the piston ring pack system based on the stochastic surface roughness

Zhang

2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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This paper proposes an efficient numerical approach to predict the initial running-in process of piston ring pack/cylinder liner system. A combined mixed lubrication and wear model coupled with an oil transport model was developed. In order to predict the hydrodynamic pressure efficiently, two improved methodologies, including the Fischer-Burmsister-Newton-Schur (FBNS) approach and the Grid Refinement (GR) strategy, were adopted. Meanwhile, in order to take into account the effect of skewness, Weibull distribution function was adopted to characterize the asperity height distribution. Predicting the wear of cylinder liner was based on the Archard's wear law. The influences of asperity plastic deformation and wear on asperity height distribution were considered. The results show that the developed model can well predict the initial running-in behavior of piston ring pack/cylinder liner system under an engine-like condition.

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“…Empirical evidences have shown that piston rings normally experience starved lubrication, at least at some points of their stroke, mainly due to interaction with the other rings in the pack. 14,15 Simulation methods for the motion of a piston ring pack have been developed, 5,6,16–19 showing that ring movements affect lubricant consumption and engine wear mechanism. Some of these methods, focused on lubricant starvation issue, have been able to predict the occurrences of oil film rupture and the conditions that can lead to gas blow-by.…”

Section: Introductionmentioning

confidence: 99%

Gas flow through a bore-piston ring contact

Hallouin

Lasseux

Senger

2020

International Journal of Engine Research

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This work reports on the derivation of simplified but accurate models to describe gas flow through a bore-piston ring contact in reciprocating machines like compressors or IC engines. On the basis of the aperture field of a contact deduced from real measurements carried out on an expanding ring in a bore, a scale analysis on the complete compressible flow model is performed, assuming ideal gas law. It is shown that the flow can be treated as stationary and three distinct flow regimes can be identified (namely incompressible, compressible creeping, and compressible inertial regimes). Three dimensionless parameters characterizing these regimes are identified. While for the two former regimes, classical analytical Poiseuille type of models are derived, an Oseen approximation is further employed for the latter, yielding a quasi-analytical solution. The models are successfully compared to direct numerical simulations (DNS) of the complete initial set of balance equations in their steady form performed on an aperture field of sinusoidal shape. These simplified models are of particular practical interest since they allow an accurate gas flow-rate estimate through a real contact using the aperture field as the geometrical input datum, together with the thermodynamic conditions (pressure and temperature). This represents an enormous advantage as DNS is still very challenging in practice due to the extremely small value of the contact aperture to contact length ratio.

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Piston Ring Pack and Cylinder Wear Modelling

Cited by 19 publications

References 10 publications

Vehicular Engine Design

Vehicular Engine Design

Modeling and prediction of the running-in behavior of the piston ring pack system based on the stochastic surface roughness

Gas flow through a bore-piston ring contact

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