Analysis of piston-pin lubrication considering the effects of structure deformation and cavitation

Ba, Lin; He, Zhenpeng; Yue-hui, Liu; Zhang, Guichang

doi:10.1631/jzus.a1400105

Cited by 21 publications

(5 citation statements)

References 20 publications

(22 reference statements)

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“…10b, for the piston with pin hole radius enlarging rate b = 1,6410 -4 , the wear marks on area B of the top surface of the pin hole were significantly mitigated, with no lubricant deposits left on the surface. These above results are consistent with Baꞌs research [11] by using multi-body dynamics model and piston pin hole lubrication model, in which it is concluded that rough contact pressure of parabola contour is smaller than that of square contour, and the wear of parabola contour is smaller. The increasing of the pin hole radius enlarging rate, the enlarging of the piston pin hole conforms to the deformation of piston pin, the contact pressure is reduced, and the wear is reduced.…”

Section: Hydraulic Pulsating Fatigue Tests Of Piston Pin Holessupporting

confidence: 91%

“…Zhang et al [10] mentioned that the special-shaped pin hole profile could improve the stress distribution on the piston pin hole surface, preventing the stress concentration, and reducing the risk of fatigue cracking in the piston pin hole. Ba et al [11] conducted comparative study of the curved profile of the piston pin hole with the conical profile structure, and the results indicated that the curved profile structure led to a larger contact area between the piston pin hole and the pin, thus lowering contact friction and the resultant friction power consumption.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Forged 42CrMo4 Steel Piston Pin Hole Profile Using Finite Element Method

Gai

Zhao

Lin³

et al. 2023

Teh. vjesn.

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The fatigue failure of the piston pin hole is considered as a key factor affecting the service life of engines. In this work, the piston pin hole profile was designed as tapered shape following a power law. By combining finite element analysis and hydraulic pulsating fatigue tests, the pin hole profile was optimized. It has been found that the maximum contact pressure on the pin hole surface was reduced by 16,7% with appropriate increasing the radius enlarging rate of the piston pin hole, the maximum tensile stress of the piston pin seat was reduced by 13,1%, and the piston pin seat fatigue safety factor was increased by 41,4%, the piston pin hole fatigue safety factor was increased by 15,9%. The piston pin hole's hydraulic pulsating fatigue test results were found to be consistent with the FEA results. It could be concluded that appropriate increasing the radius enlarging rate of the pin hole could significantly weaken the fatigue wear of the pin hole, further improving its fatigue resistance.

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Section: Hydraulic Pulsating Fatigue Tests Of Piston Pin Holessupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Optimization of Forged 42CrMo4 Steel Piston Pin Hole Profile Using Finite Element Method

Gai

Zhao

Lin³

et al. 2023

Teh. vjesn.

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“…Therefore, in order to prevent local partial contact due to deformation of pin bosses and piston pins, tapered pin bosses have been used for ensuring clearance at their inner end surface. These parts are designed on the basis of theoretical calculations such as those obtained by CAE tools [1][2][3][4][5][6]. More accurate experimental data are needed to further improve CAE techniques.…”

Section: Introductionmentioning

confidence: 99%

Development of Oil Film Pressure Measurement System for Engine Sliding Parts

Oikawa,

Owashi,

Mihara

et al. 2023

Tribology Online

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Reduction of heat and mechanical losses is a critical factor in reducing CO 2 emissions and fuel consumption of automotive engines. Toward that end, it is necessary to investigate the lubrication conditions of engine sliding surfaces and instantaneous heat flux in the combustion chamber in order to obtain experimental data for validating computer-aided engineering (CAE) calculations. The authors used thin-film sensors to measure the distribution of the oil film pressure on the sliding surfaces of engine parts including pistons, bearings and gear tooth surfaces. This paper describes the structure and configuration of the thin-film sensors and the measurement system used for direct observation, especially of piston pins, and presents the measured results.

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“…The interference fit joints consists of shaft that is larger than a tube when inserted into the joint. The press-fit parts requires interference by the tube expansion radially and reduction of the diameter of the shaft of the joint [4]. This process is to use to ensure that stresses are uniformly distributed in the tube by the insertion of the pin into the joint.…”

Section: Introductionmentioning

confidence: 99%

“…Piston pin used for joining the piston and cylinder liner of different inner diameters for varying joint strengths[4].…”

mentioning

confidence: 99%

Laser surface texturing for the improvement of the press-fit joint bond strength

Ubani¹,

Obeidi²,

Brabazon³

2019

EasyChair Preprints

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The laser surface texturing has been developed for a number of applications including for enhancing the tribological properties of structural components and for improved interference fit joints. In this study, the relationship between the micro-surface textures properties and surface texture dimensions of the material such as diameter increase were determined. Optimum levels of laser power, focal position and scanning speed of the part during processing were determined. The study involved theoretical and experimental analysis of the surface response of the press-fit parts to determine optimum parameters and their corresponding changes for high joint strength and lifetime of the joint. Due to the centrifugal force, the assist gas ejection and the overlapping laser scanning tracks, the re-solidified molten surface creates a pre-defined surface texture on the material. The laser surface texturing of the interference fit pins produced an interference percentage from 4.8% to 71.4% which corresponded to insertion pin diameters from 10.2mm to 18mm. The experiments showed that the parameters had a direct correlation with joint force with values recorded between 6.84N to 184N. The analysis showed the ability to control the tensile strength of the joint structures. The experiment work performed provided a map of the relationship between the process parameters, the surface texture width and height, and the joint strengths.

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Analysis of piston-pin lubrication considering the effects of structure deformation and cavitation

Cited by 21 publications

References 20 publications

Optimization of Forged 42CrMo4 Steel Piston Pin Hole Profile Using Finite Element Method

Optimization of Forged 42CrMo4 Steel Piston Pin Hole Profile Using Finite Element Method

Development of Oil Film Pressure Measurement System for Engine Sliding Parts

Laser surface texturing for the improvement of the press-fit joint bond strength

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