Analysis of the Operational Wear of the Combustion Engine Piston Pin

Kowalski, Sławomir; Cieślikowski, B.; Bárta, Dalibor; Dižo, Ján; Dittrich, Aleš

doi:10.3390/lubricants11030100

Cited by 8 publications

(3 citation statements)

References 22 publications

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“…Due to extreme operating temperatures, high combustion pressure, and high loads, piston pins must operate in severe conditions. High surface pressure at the contact regions between the assembled engine piston parts plays an important in piston failure (Kowalski et al, 2023). As the piston is pushed against the pin boss due to the downward force acting on the piston, high pressure on the surface is created at the contact region of the pin bosses.…”

Section: Contact Pressure Distributionsmentioning

confidence: 99%

Three-dimensional CFD-solid mechanics analysis of the hydrogen internal combustion engine piston subjected to thermomechanical loads

Al-Baghdadi

Ahmed

Ghyadh

2023

Int. J. Renew. Energy Dev.

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Fueling internal combustion engines with hydrogen is one of the most recommended alternative fuels today in order to combat the energy crisis, pollution problems, and climate change. Despite all the advantages of hydrogen fuel, it produces a higher combustion temperature than gasoline. In an internal combustion engine, the piston is among the numerous complex and highly loaded components. Piston surfaces are directly affected by combustion flames, making them critical components of engines. To examine the stress distribution and specify the critical fracture zones in the piston for hydrogen fuel engines, a three-dimensional CFD-solid-mechanics model of the internal combustion engine piston subjected to real thermomechanical loads was analyzed numerically to investigate the distribution of the temperature on the piston body, the interrelated thermomechanical deformations map, and the pattern of the stresses when fueling the engine with hydrogen fuel. With the aid of multiphysics COMSOL software, the CFD-solid-mechanics equations were solved with high accuracy. Despite the increase in pressure on the piston and its temperature when the engine is running on hydrogen fuel, the results show that the hydrogen fuel engine piston can withstand, safely, the thermomechanical loads. In comparison to gasoline fuel, hydrogen fuel caused a deformation of 0.34 mm, an increase of 17%. This deformation is within safe limits, with an average clearance of 0.867 mm between the cylinder liner and piston.

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Section: Contact Pressure Distributionsmentioning

confidence: 99%

Three-dimensional CFD-solid mechanics analysis of the hydrogen internal combustion engine piston subjected to thermomechanical loads

Al-Baghdadi

Ahmed

Ghyadh

2023

Int. J. Renew. Energy Dev.

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“…These amorphous carbon coatings also have outstanding properties, including a low coefficient of friction, high hardness, and excellent wear resistance with potential application towards forming lubricant-free devices [6]. DLC are considered ideal coatings for diverse applications, including press joint components [7], combustion engine piston pins [8], high-speed steel tools [9], medical devices [10] and rubber seals [11]. However, the mismatch of thermal expansion coefficients and the elastic module between the metallic matrix and the DLC coatings, as well as the poor interfacial atomic affinity, results in high residual stress [4].…”

Section: Introductionmentioning

confidence: 99%

Effects of Bias Voltages on the Tribological Behaviors of DLC Coatings

Zhang,

Huang,

Sun

et al. 2024

Coatings

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Ti/TiN/(Ti,N)-DLC/Ti-DLC/DLC coatings were deposited on 431 stainless steel using direct current magnetron sputtering technology under different bias voltages(0 V, −100 V, −200 V and −300 V). The microstructure and tribocorrosion performance of these DLC coatings in seawater was investigated. The results indicated that under the bias voltages, a denser and smoother surface of DLC coatings with a higher bonding strength between coatings and substrates was observed related to the increased incident kinetic energy of deposited ionized atoms. When the bias voltage was −200 V, the surface roughness reduced from 9.81 nm to 7.03 nm, and the bonding strength enhanced from 8.23 N to 8.86 N. What is more, the sp3 bond proportion and the disorder degree in DLC coatings both increased, which resulted in improved hardness and deformation resistance. However, when the bias voltage was −300 V, the increase of the amorphization was associated with a simultaneous rise in internal stress, which reduced the hardness and bond strength a little (8.72 N). DLC coatings can effectively improve the tribocorrosion properties of 431 stainless steel in seawater. When the voltage was −200 V, the average friction coefficient decreased from 0.35 to 0.07, with shallower wear traces and the wear loss of the DLC coating also being the smallest. The abrasive wear caused by metal oxides falling off the grinding ball, and the plastic deformation of the DLC coatings are the main wear forms. The high-density structure of DLC coatings under bias voltages can not only prevent the rapid expansion of cracks during deformation, but also provides a physical barrier to the erosion, which improves the corrosion and friction resistance in seawater. The optimization of bias voltage can improve the tribological performance of DLC coatings by regulating the carbon chain bond and microstructure. These results provide reference for DLC preparation and their potential engineering applications in stainless steel.

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“…Moreover, much attention was paid to the issue of diagnosing faults in the fuel supply system in the following scientific studies by Figlus et al [58,59] and Szpica et al [60] and to the wear of the cylinder liner during the start-up of a compression-ignition engine [61,62]. The operational wear and durability of the piston-rings-cylinder system was investigated by Czech and Madej [63] and Kowalski et al [64], the wear of the crankshaft of a marine engine was the subject of research by Siemi ątkowski et al [65], while measurements of engine cylinder wear were presented by Jermak et al [66]. Another study on measuring diameter uncertainty and roundness deviation for small cylinders was presented by Zhao et al [67].…”

Section: Introductionmentioning

confidence: 99%

Laboratory Tests of Electrical Parameters of the Start-Up Process of Single-Cylinder Diesel Engines

Caban,

Seńko,

Ignaciuk

2024

Energies

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Despite continuous work on new power systems for vehicles, machines, and devices, the combustion engine is still the dominant system. The operation of the combustion engine is initiated during the starting process using starting devices. The most common starting system used is the electric starter. The starting process of an internal combustion engine depends on the following factors: the technical condition of the starting system, technical condition of the engine, battery charge level, lubricating properties, engine standstill time, engine and ambient temperature, type of fuel, etc. This article presents the results of laboratory tests of the electrical parameters of the starting process of a single-cylinder compression–ignition engine with variable fuel injection parameters and ambient temperature conditions. It was confirmed that for the increased fuel dose FD2, higher values of the measured electrical parameters (Imax, Pmax, and Pmed) were obtained compared to the series of tests with the nominal fuel dose. Knowledge of the values of the electrical parameters of the starting process is important not only for the user (vehicle driver, agricultural machinery operator, etc.), but above all for designers of modern starting systems for combustion engines and service personnel. The obtained results of testing the electrical parameters of the combustion engine during start-up may be helpful in designing new drive systems supported by a compression–ignition combustion engine.

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Analysis of the Operational Wear of the Combustion Engine Piston Pin

Cited by 8 publications

References 22 publications

Three-dimensional CFD-solid mechanics analysis of the hydrogen internal combustion engine piston subjected to thermomechanical loads

Three-dimensional CFD-solid mechanics analysis of the hydrogen internal combustion engine piston subjected to thermomechanical loads

Effects of Bias Voltages on the Tribological Behaviors of DLC Coatings

Laboratory Tests of Electrical Parameters of the Start-Up Process of Single-Cylinder Diesel Engines

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