Assembled Camshaft with Sintered Cam Lobes: Torsional Fatigue Strength and Wear Performance

Blanchard, Pierre; Nigarura, Salvator; Trasorras, Juan R. L.; Wordsworth, Robert

doi:10.4271/2000-01-0397

Cited by 6 publications

(1 citation statement)

References 6 publications

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“…There are direct methods that determine the absolute values of wear. The direct method measures quantities such as changes in the geometry of the sample, changes in the weight and the magnitude of the wear and tear of the material [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Microanalysis of Worn Surfaces of Selected Rotating Parts of an Internal Combustion Engine

et al. 2021

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The present paper analyzes the damage of surfaces at spots of frictional contact, namely, the friction nodes on a camshaft and the connecting rod pins of a crankshaft. The resulting wear of the monitored friction nodes reduces the technical life of the machines, which can lead to the decommissioning of the machine. Wear was assessed by measuring roughness and microhardness and by observing the microstructures of the materials. The results of the experiments show that the rotating parts displayed visible wear on the cams, as well as on the connecting rod pins. The experiments revealed that wear was caused by the heating of the material to a high temperature during the operation of the machine and that there was a gradual cooling and tempering of the material, which led to a reduction in the microhardness of the monitored object. Lower microhardness values can be a cause of greater wear of the monitored objects. When comparing the microhardness of the used and the new camshaft, the hardened layer of the new camshaft from secondary production has a significantly smaller thickness compared to worn cams, which leads to the finding of a different material quality compared to the original parts from primary production. This fact indicates that the wear of a new camshaft as a spare part can contribute to the shortening of the technical life of friction nodes.

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Section: Introductionmentioning

confidence: 99%

Microanalysis of Worn Surfaces of Selected Rotating Parts of an Internal Combustion Engine

et al. 2021

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Design of Valve Train for Heavy Duty Application

Basu

Gokhale

Aghav

et al. 2019

Energy, Environment, and Sustainability

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Analysis on the interference assembly of camshaft with knurled tube and cam

Huang

Sun

Liu

et al. 2021

Int J Adv Manuf Technol

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：Interference joint is one of the most advanced assembly methods for camshaft. In this paper, the mechanism of camshaft interference assembly is analyzed by thick-wall cylinder model. Joining/tortion experiments are done to estimate the joining force and connection strength. The relationship between the torque capacity, joining force and interference of the camshaft is established by the experiment results. Joining force linear increase with the interference, and torque exponential increase with it. The plastic deformation characteristics of knurled teeth on the tube during the joining process are obtained by metallographic observation. The results reveal the metal line changes continuously of the knurled tube. The knurled tooth tip turns over after joining. And elastic limit would be reached in the extrusion region.

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Assembled Camshaft with Sintered Cam Lobes: Torsional Fatigue Strength and Wear Performance

Cited by 6 publications

References 6 publications

Microanalysis of Worn Surfaces of Selected Rotating Parts of an Internal Combustion Engine

Microanalysis of Worn Surfaces of Selected Rotating Parts of an Internal Combustion Engine

Design of Valve Train for Heavy Duty Application

Analysis on the interference assembly of camshaft with knurled tube and cam

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