Thermal Protection of Internal Combustion Engines Pistons

Dudareva, N. Yu.; Еникеев, Р. Д.; Ivanov, V.Yu.

doi:10.1016/j.proeng.2017.10.649

Cited by 25 publications

(10 citation statements)

References 7 publications

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“…As for the engine sliding components made of aluminum matrix composites, such as pistons, it is one of the core components of the engine. The main operating conditions are medium and low temperature environment (generally, the operating temperature of the piston is less than 300 °C), which is subjected to huge mechanical loads and thermal loads [ 7 , 8 ]. During the operation process, the increase of wear contact surface temperature leads to the formation of some oxidation products with lubricating properties [ 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of VN and TiB2-TiCx Reinforcement on Wear Behavior of Al 7075-Based Composites

et al. 2021

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Al 7075 alloy, 15 wt.% VN/7075 composites, and 20 wt.% TiB2-TiCx/7075 composites were prepared by ball milling with subsequent hot-pressing sintering. The microstructure, hardness, and wear properties at room temperature to 200 °C of Al 7075-based composites with different reinforcement phases were discussed. The grain uniformity degree values of 15 wt.% VN/7075 composites and 20 wt.% TiB2-TiCx/7075 composites were 0.25 and 0.13, respectively. The reinforcement phase was uniformly distributed in 15 wt.% VN/7075 composites and 20 wt.% TiB2-TiCx/7075 composites, almost no agglomeration occurred. The order of hardness was 20 wt.% TiB2-TiCx/7075 composites (270.2 HV) > 15 wt.% VN/7075 composites (119.5 HV) > Al 7075 (81.8 HV). At the same temperature, the friction coefficient of 15 wt.% VN/7075 composites was the lowest, while the volume wear rate of 20 wt.% TiB2-TiCx/7075 composites was the lowest. With the increase of temperature, the wear mechanism of Al 7075 changed from spalling wear to oxidation wear and adhesion wear. However, the wear mechanisms of 15 wt.% VN/7075 and 20 wt.% TiB2-TiCx/7075 composites changed from abrasive wear at room temperature to wear mechanism (oxidation wear, abrasive wear, and adhesive wear) at medium and low temperature. Comprehensive wear test results indicated that 20 wt.% TiB2-TiCx/7075 composites had excellent tribological properties at medium and low temperature.

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Section: Introductionmentioning

confidence: 99%

Effect of VN and TiB2-TiCx Reinforcement on Wear Behavior of Al 7075-Based Composites

et al. 2021

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“…Comparing pistons with different thickness i.e. 76 and 108 microns of MAO layers finalizes that thickness will not have a major effect on thermal state of pistons [21]. Through plasma spray technique the piston top was coated with partially stabilized zirconia of thickness 125microns, following with alumina (Al2O3) and NiAl as bond coat.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Yttria Stabilized and Titanium Oxide Thermal Barrier Coated Piston Effect on Engine Performance and Emission Characteristics

Spandana

Rani

Venkateswarlu³

et al. 2021

IJE

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“…Besides, as one of the most important friction pairs of internal combustion engines, pistons have an important influence on the reliability and mechanical efficiency of internal combustion engines. [6][7][8][9] During the piston operation process, the corrosive atmosphere (including SO 2 , SO 3 , etc.) will be generated by various sulfur, which is one of the constitutions of the diesel oil and lubricating oil.…”

Section: Introductionmentioning

confidence: 99%

Tribofilm formation on the VN/7075 composite surface under sulfur-containing boundary lubrication

Bai

Liu

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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In this paper, Al7075 alloy and 15 wt% VN/7075 composite were prepared by ball milling and hot-press sintering. The microstructure, hardness, and wear behavior under different working conditions (environmental condition: dry friction, sulfur-containing boundary lubrication, and oil lubrication) were studied. The results showed that the distribution of VN was dispersive and uniform in 15 wt% VN/7075 composite without obvious agglomeration. The hardness (119.5 Hv) of 15 wt% VN/7075 composite was 46.1% higher than the Al7075 alloy (81.8 Hv). Friction and wear behavior test results showed that under sulfur-containing boundary lubrication condition, according to the tribofilm layer on the worn surface of 15 wt% VN/7075 composite, the friction coefficient of 15 wt% VN/7075 composite decreased by 37.6% compared with the Al7075 alloy. The main wear mechanism of 15 wt% VN/7075 composite was delamination wear and abrasive wear under dry friction, while under sulfur-containing boundary lubrication and oil lubrication, it changed to mild abrasive wear.

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Thermal Protection of Internal Combustion Engines Pistons

Cited by 25 publications

References 7 publications

Effect of VN and TiB2-TiCx Reinforcement on Wear Behavior of Al 7075-Based Composites

Effect of VN and TiB2-TiCx Reinforcement on Wear Behavior of Al 7075-Based Composites

Experimental Study on Yttria Stabilized and Titanium Oxide Thermal Barrier Coated Piston Effect on Engine Performance and Emission Characteristics

Tribofilm formation on the VN/7075 composite surface under sulfur-containing boundary lubrication

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