TY - NEWS
TI - CFD Analysis of the Effect of Dimples and Cylinder Liner Honing Groove on the Tribological Characteristics of a Low Displacement Engine
AU - Orjuela Abril, Martha Sofia 
AU - FONSECA VIGOYA, MARLEN DEL SOCORRO
AU - Pabón León, Jhon
AB - The contact between the piston rings and the cylinder liner is an interface with a strong
influence on the tribological behavior and, therefore, directly affects the useful life of the engine
components and fuel consumption. Due to this importance, the present investigation carried out
an analysis of the effects of dimples and the honing groove in the cylinder liner on the tribological
characteristics. A tribological model was developed to study the friction forces, minimum film
thickness, and friction coefficient for the present investigation. Similarly, a computational fluid
dynamics model was built to determine the dynamic movement of the piston. The validation of the
numerical model showed a close similarity with the real behavior of the engine, obtaining an average
relative error of 14%. The analysis of the results showed that a 3% increase in dimples’ density leads
to a 3.79% increase in the minimum lubricant film and a 2.76% decrease in friction force. Additionally,
it was shown that doubling the radius and depth of the dimple produces an increase of 3.86% and
1.91% in the thickness of the lubrication film. The most suitable distribution of the dimples on the
surface of the cylinder liner corresponds to a square array. In general, the application of dimples and
honing grooves in the cylinder liner are promising alternatives to reduce energy losses and minimize
wear of engine components.
DA - 2022-04-07
KW - engine piston
KW - surface dimples
KW - honing groove
KW - cylinder liner
KW - coefficient friction
KW - tribology
PB - Lubricants
UR - https://repositorio.ufps.edu.co/handle/ufps/6536
ER -