Temperature and thermal stress analyses of a ceramic-coated aluminum alloy piston used in a diesel engine

Cerit, Muhammet; ÇOBAN, Mehmet

doi:10.1016/j.ijthermalsci.2013.10.009

Cited by 102 publications

(64 citation statements)

References 20 publications

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“…With the increase of the thickness of interlayer, the maximum shear stress in the interlayer decreased at decreasing rate. Cerit et al [19] reported that with the increase of thickness, the maximum shear stress decreased at decreasing rate, which agrees well with the calculation results of the present work. But thicker interlayer leads to material waste and high cost.…”

Section: Elastic Modulus and Maximum Shear Stress Analysessupporting

confidence: 93%

Effect of elastic modulus and thickness of the interlayer on the bond strength for ceramic coating-substrate system

Bian

Yang

Zhao

et al. 2015

Ceramics International

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Section: Elastic Modulus and Maximum Shear Stress Analysessupporting

confidence: 93%

Effect of elastic modulus and thickness of the interlayer on the bond strength for ceramic coating-substrate system

Bian

Yang

Zhao

et al. 2015

Ceramics International

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“…Aydin [21] reported that minor cracks on the ceramic coating were observed after 100 hours of operation ( Figure 4) due to the absence of bond layer. Thermal expansion coefficients values of the bond layer must be lower than that of the coating layer and higher than metallic substrate [47][48][49][50][51][52]. Zirconates (10 -6 K -1 ), garnets (9.1x10 -6 K -1 ), Yittria stabilized zirconia and forsterite (11x10 -6 K -1 ) have better TEC values than other materials (Table 2).…”

Section: Coating Layers and Type Of Materialsmentioning

confidence: 99%

Biofuels and thermal barrier: A review on compression ignition engine performance, combustion and exhaust gas emission

Masera

Hossain

2019

Journal of the Energy Institute

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The performance of an internal combustion engine is affected when renewable biofuels are used instead of fossil fuels in an unmodified engine. Various engine modifications were experimented by the researchers to optimise the biofuels operated engine performance. Thermal barrier coating is one of the techniques used to improve the biofuels operated engine performance and combustion characteristics by reducing the heat loss from the combustion chamber. In this study, engine tests results on performance, combustion and exhaust emission characteristics of the biofuels operated thermal barrier coated engines were collated and reviewed. The results found in the literature were reviewed in three scenarios: (i) uncoated versus coated engine for fossil diesel fuel application, (ii) uncoated versus coated engine for biofuels (and blends) application, and (iii) fossil diesel use on uncoated engine versus biofuel (and blends) use on coated engine. Effects of injection timing, injection pressure and fuel properties on thermal barrier coatings were also discussed. The material type, thickness and properties of the coating materials used by the research community were presented. The effectiveness and durability of the coating layer depends on two key properties: low thermal conductivity and high thermal expansion coefficient. The current study showed that thermal barrier coatings could potentially offset the performance drop due to use of biofuels in the compression ignition engines. Improvements of up to 4.6% in torque, 7.8% in power output, 13.4% in brake specific fuel consumption, 15.4% in brake specific energy consumption and 10.7% in brake thermal efficiency were reported when biofuels or biofuel blends were used in the thermal barrier coated engines as compared to the uncoated engines. In coated engines, peak cylinder pressure and exhaust gas temperature were increased by up to 16.3 bar and 14% respectively as compared to uncoated condition. However, changes in the heat release rates were reported to be between-27% and +13.8% as compared to uncoated standard engine. Reductions of CO, CO2, HC and smoke emissions were reported by up to 3.8%, 11.1%, 90.9% and 63% respectively as compared to uncoated engines. Significant decreases in the PM emissions were also reported due to use of thermal barrier coatings in the combustion chamber. In contrast, at high speed and at high load operation, increase in the CO and CO2 emissions were also reported in coated engines. Coated engines gave higher NOx emissions by about 4-62.9% as compared to uncoated engines. Combined effects of thermal barrier coatings and optimisation of fuel properties and injection parameters produced further performance and emissions advantages compared to only thermal barrier coated engines. Overall, current review study showed that application of thermal barrier coatings in compression ignition engines could be beneficial when biofuels or biofuel blends are used instead of standard fossil diesel. However, more research is needed combining coatings, types of bio...

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“…Simulation. Temperature field and heat transfer coefficient are important boundary conditions for the piston thermal analysis [19,20]. The third type of boundary condition is usually adopted in the analysis of the piston, which requires the temperature T and heat transfer coefficient α of the peripheral medium to be given.…”

Section: Temperature Field Measurement and Numericalmentioning

confidence: 99%

Failure Analysis of the Pin Bore of the Combined Piston for the Aero Engine

Pan

Guo

2019

International Journal of Aerospace Engineering

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The combined piston can be used in an aero piston heavy fuel engine because of its light weight, so as to reduce the reciprocating inertia force and improve the engine power-weight ratio. However, the pin bore of the combined piston is prone to deform leading to the failure of the piston. Based on the structure of the piston, the stress of the piston under thermomechanical coupling is analyzed, the temperature field of the piston is determined by experiments, and the deformation rule of the piston pin bore under the thermomechanical coupling is summarized. A design scheme is proposed to change the position of the thread connection between the piston crown and the piston head. Under the same conditions, the deformation of the piston pin bore of the original scheme and the new scheme is analyzed. The results show that together with the changing of the connection thread between the piston crown and the piston head, the deformation of the piston pin bore decreases by 60 μm and the deformation of the piston pin bore is controlled. The test results show that the deformation of the pin bore is within the acceptable range, which proves the effectiveness of the improved scheme.

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Temperature and thermal stress analyses of a ceramic-coated aluminum alloy piston used in a diesel engine

Cited by 102 publications

References 20 publications

Effect of elastic modulus and thickness of the interlayer on the bond strength for ceramic coating-substrate system

Effect of elastic modulus and thickness of the interlayer on the bond strength for ceramic coating-substrate system

Biofuels and thermal barrier: A review on compression ignition engine performance, combustion and exhaust gas emission

Failure Analysis of the Pin Bore of the Combined Piston for the Aero Engine

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