Friction and Wear Performance of Double-bump Design of Piston Skirt Main Thrust Side

Yin, Bifeng; Jiajun, Zu; Xu, Bo; Huang, Gongyin; Manying, Yang

doi:10.1007/s12239-020-0148-y

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…After optimizing of the clearance and adopting the double-bump profile on the main thrust side, the accumulated wear load of the piston can be significantly reduced and its friction and wear performance will be improved. 13 Sergey G. Belchev et al, put forward that pistons with altered form of the piston skirt contact area are presented in this paper. The use of such pistons does not change the degree of liquid friction.…”

Section: Improvement Of Piston Structure Of Internal Combustion Enginementioning

confidence: 97%

Study on lubrication performance of engine piston skirt with bionic design

Bo,

Song,

Weijun

et al. 2023

Advances in Mechanical Engineering

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As the main friction pair of engine, the friction loss of piston-cylinder liner assembly in the working process has become the main reason of engine friction power consumption. Many species in the biological world have formed non-smooth forms of resistance reduction after thousands of years of survival and evolution. Many people have applied this non-smooth shape of drag reduction on organisms to the surface of friction pairs in construction machinery. Based on LX108 engine, the wear and erosion resistance of Scapharca subcrenata surface is applied to the piston skirt, which is the main friction pair in the engine. Nine test schemes were designed according to orthogonal test. This design selects three factors, namely, groove distribution type, groove depth and width, groove spacing, and each factor includes three levels. The macroscopic fluid lubrication state of the whole piston skirt with bionic shape is studied. Through the change of oil film thickness caused by thermal-mechanical coupling deformation of skirt, combined with the average Reynolds equation, the hydrodynamic pressure of lubricating oil, shear stress, and skirt friction force are obtained to verify the contribution of bionic shape to piston drag reduction, wear reduction, wetting increase, and friction power consumption. The simulation and test results show that the lubrication of all parts of the bionic groove piston skirt is better than that of the standard piston; When the depth and width of groove is 0.8 mm and the spacing is 10°, the thicker the oil film thickness of skirt is; The bionic piston whose oil film bearing area is 74%–87% of the standard piston has the smallest normal pressure and friction; When the upper end of the skirt is arranged with groove shape and the lower end is arranged with narrow groove shape between wide grooves, the lubrication effect is better.

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Section: Improvement Of Piston Structure Of Internal Combustion Enginementioning

confidence: 97%

Study on lubrication performance of engine piston skirt with bionic design

Bo,

Song,

Weijun

et al. 2023

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…A piston dynamics model considering surface roughness was established by Ricardo-Pisdyn software. Results show that appropriately increasing the depth of the cavity and optimizing the clearance can significantly reduce the cumulative wear load of the piston and improve both its friction and wear performance [ 10 ]. The relevance of friction in the main cylinder chamber was emphasized and the technology to compensate for its negative effects was discussed.…”

Section: Introductionmentioning

confidence: 99%

Effect of Geometric Error on Friction Behavior of Cylinder Seals

Lin

Li³

et al. 2021

Polymers

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The tribological characteristics of the cylinder directly affect the operation accuracy of the pneumatic servo system. However, the geometric error has a significant effect on its tribological behavior and the related research is insufficient. Thus, the dynamic friction process of rubber seals has been investigated considering the influence of geometric errors. Firstly, based on the self-made friction test platform, the friction force of the rubber seals was studied and the influence law of geometric error on the contact area of the rubber seal ring was revealed. Secondly, the numerical model of the friction and contact of the rubber seals for the cylinder segment was developed by using the finite element simulation method and the influence laws of machining errors, such as roundness and straightness on the friction characteristics, were revealed. Finally, synergy effects of roundness and straightness in the friction behavior of rubber seals considering geometric errors was investigated, which lays a foundation for the accurate prediction of cylinder dynamic mechanical properties.

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Reduction of Piston Skirt Friction Using the Micro-scale Patterned Surface

Kang

Kim

et al. 2023

Int.J Automot. Technol.

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Friction and Wear Performance of Double-bump Design of Piston Skirt Main Thrust Side

Cited by 5 publications

References 14 publications

Study on lubrication performance of engine piston skirt with bionic design

Study on lubrication performance of engine piston skirt with bionic design

Effect of Geometric Error on Friction Behavior of Cylinder Seals

Reduction of Piston Skirt Friction Using the Micro-scale Patterned Surface

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