A Model to Predict the Influence of Inconsistencies in Thermal Barrier Coating (TBC) Thicknesses in Pistons of IC Engines

Ramaswamy, Parvati; Shankar, Vijai Shankar Bhavani; Reghu, V. R.; Mathew, Nikhil; Kumar, Shailendra

doi:10.1016/j.matpr.2018.02.245

Cited by 12 publications

(8 citation statements)

References 2 publications

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“…To address this issue, a research piston was fabricated simulating the intricate contour of the piston and were plasma spraycoated with 8YPSZ ceramic. Coatings characterisations and developmental steps involved thermal shock and thermal barrier tests and the piston coating parameters were established based on these findings [28,29].…”

Section: Methodsmentioning

confidence: 99%

“…Cross-section metallography performed on the as-spray coated and thermal shock cycled research pistons (150 and 250μm thick coating) revealed the coating integrity especially at the piston crown area. Details are not within the scope of this paper [28,29]. Coatings with higher thicknesses introduce a stronger thermal barrier effect than those with lower thicknesses: hence a 250μm thick coating was used to coat the actual diesel engine piston for further evaluation of the LHR concept.…”

Section: Coating Characterisationmentioning

confidence: 99%

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Comparative Experimental Studies on Four Stroke Four Cylinder Diesel fuelled Base Line Engine and Low Heat Rejection Engine

Reghu

Shankar

Ramaswamy

2019

IJAME

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The depletion of conventional fuel source at a fast rate and increasing of environment pollution motivated extensive research in energy efficient engine design. In the present work, experimental investigations were carried out on a four-stroke four-cylinder dieselfuelled Base Line Engine (BLE) by conducting a normal load test and measuring the required Brake Thermal Efficiency (BThE) and Specific Fuel Consumption (SFC) in a 100 HP dyno facility. A six-gas Analyser was used for the measurement of Unburnt Hydrocarbons (UBHC), Carbon monoxide (CO), Carbon dioxide (CO2), free Oxygen (O2), Nitrogen oxides (NOx), Sulphur oxides (SOx) and a smoke meter was used to measure smoke opacity. Low Heat Rejection (LHR) engine was realized by coating the crown of the aluminium alloy piston with the most popular Thermal Barrier Coating (TBC) material, namely 8%Yttria Partially Stabilized Zirconia (8YPSZ), after coating qualification on research pistons, specifically fabricated to retain the piston material specification, and the geometry of the crown contour. A normal load test was conducted on LHR engine to evaluate the performance as well as to determine the concentration of pollutants. A ~30% improvement in BThE and ~35% improvement in SFC was exhibited by the LHR engine at all loads studied (7 to 64%). While UBHC level showed an increase, the CO, CO2 and O2 contents as revealed in the emission test showed a mixed response (high and low) for an LHR engine. Compared with BLE, NOx and smoke level in LHR engine emission showed an increasing trend with the load. On comparing BLE and LHR engine test results, value addition to the BLE in terms of reduced fuel consumption and pollutants was observed.

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Section: Methodsmentioning

confidence: 99%

Section: Coating Characterisationmentioning

confidence: 99%

Comparative Experimental Studies on Four Stroke Four Cylinder Diesel fuelled Base Line Engine and Low Heat Rejection Engine

Reghu

Shankar

Ramaswamy

2019

IJAME

Self Cite

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“…The mesh process before finite element is performed by Hypermesh according to the establishment and simplification of the geometric model. 15 First, the triangle mesh is divided and the tetrahedral mesh is generated based on the triangle mesh. At the same time, the coil part is dragged by a 2D rectangular mesh.…”

Section: Simulation Calculation and Experimentsmentioning

confidence: 99%

Analysis and evaluation of temperature field and experiment for magnetorheological fluid testing devices

Xiong

Luo

et al. 2021

Advances in Mechanical Engineering

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When a large amount of heat is produced during the operation of a MRF (magnetorheological fluid) testing device, the temperature of the device will increase, which will in turn affect the characteristics of the MRF. Exploring the temperature field characteristics of the MRF yield stress testing device is necessary to improve the accuracy of the device. In this study, first, the yield stress testing device is designed, and then its temperature field model, including enameled wire and assembly gap, is established. Second, simulation software is used to simulate the temperature field change. Finally, a test platform is developed to test the simulation results, especially for two factors, namely, thermal conductivity of the coil winding and assembly gap, which demonstrate considerable influence. Comprehensive thermal conductivity and assembly clearance are determined, and the optimum temperature field of the device for measuring yield stress is resulted.

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“…Thermal barrier coating materials are applied to high-temperature engines that play an insulating role in the engine and significantly improve its service temperature and thermal efficiency. Materials with a low thermal conductivity have important application values in thermal barrier coating, [8][9][10][11] thermal insulation, 12 thermoelectric materials, 13,14 and other fields. Currently, studies on low thermal conductivity materials mainly focus on high-temperature thermal barrier coatings.…”

Section: Introductionmentioning

confidence: 99%

Preparation of ultralow thermal conductivity (Mg_0.5Ca_0.3Ba_0.2) (AlSi)₂O₈ceramics

Sheng

Deng

Liang

et al. 2022

Int J Applied Ceramic Tech

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A Model to Predict the Influence of Inconsistencies in Thermal Barrier Coating (TBC) Thicknesses in Pistons of IC Engines

Cited by 12 publications

References 2 publications

Comparative Experimental Studies on Four Stroke Four Cylinder Diesel fuelled Base Line Engine and Low Heat Rejection Engine

Comparative Experimental Studies on Four Stroke Four Cylinder Diesel fuelled Base Line Engine and Low Heat Rejection Engine

Analysis and evaluation of temperature field and experiment for magnetorheological fluid testing devices

Preparation of ultralow thermal conductivity (Mg_0.5Ca_0.3Ba_0.2) (AlSi)₂O₈ceramics

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A Model to Predict the Influence of Inconsistencies in Thermal Barrier Coating (TBC) Thicknesses in Pistons of IC Engines

Cited by 12 publications

References 2 publications

Comparative Experimental Studies on Four Stroke Four Cylinder Diesel fuelled Base Line Engine and Low Heat Rejection Engine

Comparative Experimental Studies on Four Stroke Four Cylinder Diesel fuelled Base Line Engine and Low Heat Rejection Engine

Analysis and evaluation of temperature field and experiment for magnetorheological fluid testing devices

Preparation of ultralow thermal conductivity (Mg0.5Ca0.3Ba0.2) (AlSi)2O8ceramics

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Resources

About

Preparation of ultralow thermal conductivity (Mg_0.5Ca_0.3Ba_0.2) (AlSi)₂O₈ceramics