Thermo-mechanical fatigue damage and failure of modern high performance diesel pistons

Floweday, Gareth; Петров, С. Н.; Tait, R.B.; Press, J. J.

doi:10.1016/j.engfailanal.2011.02.002

Cited by 40 publications

(16 citation statements)

References 7 publications

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“…In particular, fatigue phenomena are recognized to play a crucial role in a large number of piston failures. 1,2 In order to evaluate the mechanical strength of engine components it is necessary to model and to analyse them under all the possible critical operating conditions. Cyclic stresses and strains, which are responsible for fatigue phenomena, are essentially related to gas pressure evolution, inertial loads and temperature distribution, and so both thermal mechanisms and mechanical mechanisms are usually involved.…”

Section: Introductionmentioning

confidence: 99%

Influence of different temperature distributions on the fatigue life of a motorcycle piston

Giacopini

Sissa

Rosi

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part D:

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In this paper, finite element analyses are performed to evaluate the stresses and the strains in a motorcycle piston. Non-linear finite element models are employed to mimic the piston behaviour when subjected to different loading conditions. In particular, the gas forces, the inertial forces and the piston-to-cylinder contact forces are considered. Appropriate temperature distributions are applied to the model to include the thermal stresses and strains in the analyses. Two different thermal configurations are considered: the first has a standard design of the oil jet hitting the underside zone of the piston crown, while the second presents modified parameters able to increase the heat transfer coefficient appreciably. The different operating temperature distributions related to the two thermal configurations considered strongly influence the pistons thermomechanical behaviour. This paper aims to perform high-cycle fatigue analyses to show how the fatigue life and fatigue-critical points of the component change when moving from the standard configuration to the modified configuration

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Section: Introductionmentioning

confidence: 99%

Influence of different temperature distributions on the fatigue life of a motorcycle piston

Giacopini

Sissa

Rosi

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part D:

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show abstract

“…In recent years, an interesting work of Ayatollahi et al, [15] has been carried out specifically on the thermo-mechanical fatigue life assessment of a diesel engine piston in order to compute its high cycle fatigue safety factor and low cycle fatigue life using aluminium-silicon alloy material. Another study on the causes of the piston failures is performed in passenger car diesel engines by the establishment of a test program [16]. In this study, an experimental analysis of the fractured pistons revealed that thermo-mechanical fatigue initiation appears as a result of primary silicon phase cracking and subsequent micro-crack formation due to excessive thermomechanical loading.…”

Section: Introductionmentioning

confidence: 99%

“…This study will be helping to avoid many problems encountered in the piston-cylinder system by reviewing some specifics during the design stages. Among these problems, we can mention piston damages, seizures, fractures and noise [16]. The studied piston has a hollow hemisphere mounted by a hollow cylinder form " Figure 1".…”

Section: Introductionmentioning

confidence: 99%

Study of Piston Thermo-Elastic Behaviour under Thermomechanical Solicitations

Mechalikh¹,

Benhamou²,

Zidane³

et al. 2019

IJAME

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The piston material choice is a major factor in the design stages of internal combustion engines for its importance to improving the durability and the operation reliability during the piston life cycle. Indeed, even as many researches have been conducted for a long time to improve the piston performances in the diesel engine, considerable numbers of piston damages still significantly occur. This research work is an assessment by the finite element method (FEM) of a set of piston materials for the purpose of being used in a direct injection diesel engine. The main objective is to predict stresses concentrations and the clearance between the piston and the cylinder (to avoid metal-metal adhesion) from thermomechanical solicitations. The stresses and deformations are evaluated in a 3D piston model by using ABAQUS software. A first assessment step is performed in heat convection/conduction modes to determine the temperature distribution. Then, this last one is coupled to the pressure field resulting from the gas combustion in order to compute stresses and the magnitude displacement. The obtained results show that the austenitic steel AS12UNG with fibre-reinforced possess low thermomechanical stress values compared to other material types. This material allows a minimum failure risk and therefore contributes to the enhancement of the piston design.

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“…The fatigue of pistons has been classified as mechanical and high temperature mechanical, as well as thermal and thermal-mechanical [3]. The main causes of thermo-mechanical fatigue damage have been classified as a thermo-mechanical overload by insufficient intercooling and thermo-mechanical overload by over-fuelling [4]. The types of piston damages have been classified as seizure due to insufficient clearances, seizure due to poor lubrication, seizure due to overheating, damages due to abnormal combustion, piston and piston ring fractures, piston pin fractures, damage to the piston pin circlips, seizures in the piston pin bores, piston noises, increased oil consumption due to excessive wear on pistons, piston rings and cylinder running surfaces [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Piston Damages – Case Studies and Possibilities of Early Detection

Filipczyk

Stanik²

2015

Journal of KONES. Powertrain and Transport

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Damages of car engine pistons are one of the most expensive failures regarding final consequences and possibilities of engine repair. There have been many research works carried out so far regarding the materials, manufacturing techniques, geometrical shapes and reliability of engine pistons. Notwithstanding all these studies, there is a huge number of piston damage cases. This work is concerned with causes of piston damages and possibilities of early detections. Damaged piston of petrol and diesel engines in passenger and light duty cars have been analyzed. A compendium of case studies of damaged piston causes has been presented. The analysis of different types of damage mechanisms such as thermal and mechanical fatigue, seizure due to insufficient clearances, poor lubrication, overheating and damages due to abnormal combustion have been presented in this work. Faults of electronic control system, engine management malfunction, ignition-timing faults were recognized as the most frequent initial causes of piston damages. Possibilities of early diagnostics of particular causes of damages have been elaborated and presented in the context of total costs of repairs.

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Thermo-mechanical fatigue damage and failure of modern high performance diesel pistons

Cited by 40 publications

References 7 publications

Influence of different temperature distributions on the fatigue life of a motorcycle piston

Influence of different temperature distributions on the fatigue life of a motorcycle piston

Study of Piston Thermo-Elastic Behaviour under Thermomechanical Solicitations

Piston Damages – Case Studies and Possibilities of Early Detection

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