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Analysis of the influence of textured surfaces and lubrication conditions on the tribological performance between the compression ring and cylinder liner

Pardo García, Carlos Eduardo; Rojas Suárez, Jhan Piero; Orjuela Abril, Martha Sofia (LubricantsSuiza, 2021-05-06)

The objective of the present investigation is to analyze the tribological performance between the union of the cylinder liner and the compression ring under the influence of surface texturing and different lubrication ...
study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine

Orjuela Abril, Sofía; FONSECA VIGOYA, MARLEN DEL SOCORRO; Pardo García, Carlos Eduardo (LubricantesSuiza, 2022-04-07)

In the present investigation, a study is carried out using numerical simulation on the effects of cylinder deactivation on tribological parameters and emissions in an internal combustion engine. For the development of ...
Study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine

Orjuela Abril, Martha Sofia; FONSECA VIGOYA, MARLEN DEL SOCORRO; Pardo García, Carlos Eduardo (LubricantsSuiza, 2022-04-07)

In the present investigation, a study is carried out using numerical simulation on the effects of cylinder deactivation on tribological parameters and emissions in an internal combustion engine. For the development of ...

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Analysis of the influence of textured surfaces and lubrication conditions on the tribological performance between the compression ring and cylinder liner
...
Pardo García, Carlos Eduardo | 2021-05-06

The objective of the present investigation is to analyze the tribological performance between the union of the cylinder liner and the compression ring under the influence of surface texturing and different lubrication boundary conditions. The analysis is carried out by developing a numerical model, which involves hydrodynamic pressure, lubrication film thickness, textured surface, dynamic forces, and lubrication boundary conditions (starved lubrication and fully flooded lubrication). MATLAB® software (The MathWorks Inc., Natick, MA, USA) is used to solve the equations developed. The results show that the application of a textured surface on the cylinder liner allows obtaining a reduction of 20% and 5% in the asperity contact force and in the total friction force. Additionally, the textured surface allows for a 4% increase in MOFT. In this way, it is possible to reduce the power loss. The implementation of a boundary condition of fully flooded lubrication produces an overestimation in the total friction force due to the greater prominence of the lubrication film. Implementing a textured surface in the ring profile is an alternative way to reduce power loss. The results show that this alternative allows an 8% reduction in power loss.

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study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine
...
Orjuela Abril, Sofía | 2022-04-07

In the present investigation, a study is carried out using numerical simulation on the effects of cylinder deactivation on tribological parameters and emissions in an internal combustion engine. For the development of the research, a tribological model was used to predict the characteristics of the lubrication film, friction conditions, blow-by gas, and deformation of the piston rings. Additionally, the construction of a CFD model was carried out to describe the kinematic movement of the engine piston. The analysis of results allowed for the demonstration of the active cylinders presenting an increase of 21.53% and 7.65% in the pressure and temperature in the cylinder wall. Additionally, the active cylinders present a reduction of 11.33% in the minimum thickness of the lubrication film and an increase in the friction force due to asperities, which implies an increase of 33% in power losses due to friction. The implementation of technologies such as cylinder deactivation causes an increase in combustion gas leaks caused by the increase in pressure of the active cylinders. However, the use of this technology allows reducing 9.09%, 8.26%, and 7.41% in CO, HC, and NO emissions. Although the use of technologies such as cylinder deactivation allows significant fuel savings, it is necessary to consider the negative effects caused by this technology, such as the increase in combustion gas leaks and the increase in power loss by the greatest frictional forces.

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Study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine
...
Orjuela Abril, Martha Sofia | 2022-04-07

In the present investigation, a study is carried out using numerical simulation on the effects of cylinder deactivation on tribological parameters and emissions in an internal combustion engine. For the development of the research, a tribological model was used to predict the characteristics of the lubrication film, friction conditions, blow-by gas, and deformation of the piston rings. Additionally, the construction of a CFD model was carried out to describe the kinematic movement of the engine piston. The analysis of results allowed for the demonstration of the active cylinders presenting an increase of 21.53% and 7.65% in the pressure and temperature in the cylinder wall. Additionally, the active cylinders present a reduction of 11.33% in the minimum thickness of the lubrication film and an increase in the friction force due to asperities, which implies an increase of 33% in power losses due to friction. The implementation of technologies such as cylinder deactivation causes an increase in combustion gas leaks caused by the increase in pressure of the active cylinders. However, the use of this technology allows reducing 9.09%, 8.26%, and 7.41% in CO, HC, and NO emissions. Although the use of technologies such as cylinder deactivation allows significant fuel savings, it is necessary to consider the negative effects caused by this technology, such as the increase in combustion gas leaks and the increase in power loss by the greatest frictional forces.

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Analysis of the influence of textured surfaces and lubrication conditions on the tribological performance between the compression ring and cylinder liner

study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine

Study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine

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Analysis of the influence of textured surfaces and lubrication conditions on the tribological performance between the compression ring and cylinder liner

study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine

Study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine

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Listar por tema "power loss"

Analysis of the influence of textured surfaces and lubrication conditions on the tribological performance between the compression ring and cylinder liner ﻿

study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine ﻿

Study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine ﻿

Envíos recientes

Analysis of the influence of textured surfaces and lubrication conditions on the tribological performance between the compression ring and cylinder liner

study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine

Study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine

Portales Institucionales

Analysis of the influence of textured surfaces and lubrication conditions on the tribological performance between the compression ring and cylinder liner

study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine

Study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine