Inspired by Earthworms and Leeches: The Effects of Cylindrical Pit Arrays on the Performance of Piston-Cylinder Liner Friction Pairs

Gao, Tianyu; Chen, Hao; Tang, Danna; Wang, Yumo

doi:10.3390/app132011580

Cited by 3 publications

(1 citation statement)

References 34 publications

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“…The lubricating oil thermal effects and transport, and the transition from full-film to local dry lubrication conditions were discussed. Gao et al [10] explored cylinder liner friction and wear mechanisms through FEA. The piston-cylinder liner contact was set as an asymmetric "frictional" behavior and the "enhanced Lagrangian" method was employed to implement cylinder liner friction se ings, while the cylinder pressure, thermal coupling, and the influence of cylinder liner deformation were not considered.…”

Section: Introductionmentioning

confidence: 99%

Simulation Research on Cylinder Liner Shape and Position Tolerance under Thermo-Mechanical Load

Han,

Wang,

Wang

et al. 2024

Processes

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The cylinder liner bears alternating thermal load and mechanical load, and evaluating the cylinder liner deformation is a key issue in the design stage of an engine. In this work, the shape and position tolerance of the cylinder liner to various loads were studied based on the finite element method, the simplex algorithm and the least square method. Firstly, the heat transfer boundary conditions of the cylinder liner were obtained through combustion simulation. Combined with the mechanical load, the transient deformation of the cylinder liner under the thermo-mechanical load was obtained. Subsequently, the out-of-roundness and coaxiality were selected to evaluate the shape and position changes in the cylinder liner. Finally, the transient tolerance analysis of the cylinder liner under alternating thermo-mechanical load was carried out. The results show that the maximum out-of-roundness of the cylinder liner under thermal load, mechanical load and thermos-mechanical load was 15.12, 43.40 and 51.76 μm, respectively. The maximum coaxiality under thermal load, mechanical load and thermos-mechanical load were 6.17, 80.49 and 80.22 μm. The side thrust was more likely to cause uneven deformation of the cylinder liner section, the liner coaxiality was mainly affected by the cylinder burst pressure, and the liner shape tolerance was much more sensitive to the mechanical load than the mechanical load.

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Section: Introductionmentioning

confidence: 99%

Simulation Research on Cylinder Liner Shape and Position Tolerance under Thermo-Mechanical Load

Han,

Wang,

Wang

et al. 2024

Processes

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The testing and optimization of a bio-inspired textured piston for the BW-250 mud pump

Gao,

Wang,

Xie

et al. 2024

Polymer Testing

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Friction and Wear Performance of a Hydraulic Motor Roller/Piston Pair Contact Lined with the Self-Lubricating Bearing Bush Modified by PEEK

Li,

Han,

Cui

et al. 2024

Applied Sciences

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Poly Ether Ether Ketone (PEEK) is a kind of special engineering plastic with excellent properties such as high-temperature resistance, self-lubrication, wear resistance, and high mechanical strength. However, its blending or composite modification applications still face numerous challenges. The primary objective of this research was to evaluate the friction and wear performance of a three-layer self-lubricating bearing bush, which was made from a modified material containing short carbon fiber and Poly Ether Ether Ketone (SCF/PEEK). The bearing bush is used as a surface contact layer on the pistons of a hydraulic motor in the interface with the cam roller. The bearing bush was processed using a 15% SCF-modified PEEK material, and the friction and wear test was conducted using a self-built friction test machine. This study aimed to assess the frictional and wear characteristics of the SCF/PEEK-modified material in the bearing bush. The results show that as the experimental pressure rises from 15 MPa to 25 MPa, the friction coefficient of the SCF-modified bearing bush experiences a significant decrease from 0.420 to 0.296. Furthermore, the stability of the frictional morphology of carbon fibers indicates its effective adaptability to low speed and high load conditions.

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Inspired by Earthworms and Leeches: The Effects of Cylindrical Pit Arrays on the Performance of Piston-Cylinder Liner Friction Pairs

Cited by 3 publications

References 34 publications

Simulation Research on Cylinder Liner Shape and Position Tolerance under Thermo-Mechanical Load

Simulation Research on Cylinder Liner Shape and Position Tolerance under Thermo-Mechanical Load

The testing and optimization of a bio-inspired textured piston for the BW-250 mud pump

Friction and Wear Performance of a Hydraulic Motor Roller/Piston Pair Contact Lined with the Self-Lubricating Bearing Bush Modified by PEEK

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