Failure Analysis of a Diesel Engine Exhaust Manifold

Li, Yuan; Liu, Jinxiang; Huang, Weiqing; Wu, Yirong

doi:10.1007/s40962-022-00796-8

Cited by 6 publications

(3 citation statements)

References 31 publications

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“…Ferritic high-silicon and molybdenum (SiMo) nodular cast iron is one of the most widely used materials in exhaust manifolds and turbocharger housings due to its desirable thermomechanical properties and its resistance to high-temperature corrosion [1][2][3][4][5]. These parts are subjected to cyclic thermal loads during the engine's operating condition.…”

Section: Introductionmentioning

confidence: 99%

High Temperature Oxidation Behavior of High Al-Si Alloyed Vermicular Graphite Cast Iron for Internal Combustion Engine’s Hot-End Exhaust Components

Yilmaz,

Bayata,

Solak

2024

Metals

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This study investigated the influence of high silicon (4.2 wt%) and varying aluminum (3.5–4.8 wt%) content on the high temperature oxidation behavior and thermophysical properties of SiMoAl vermicular graphite cast iron for hot-end exhaust components. Isothermal oxidation tests at 800 °C and nonisothermal oxidation tests in a dry-air atmosphere were conducted on SiMo nodular iron, along with two SiMoAl vermicular graphite cast iron variants alloyed with 3.5 wt% Al and 4.8 wt% Al. The investigations revealed the formation of a thin duplex layer of oxide scale, consisting of an iron-rich external oxide layer and continuous aluminum oxide at the metal/oxide interface. Although aluminum oxide acted as a protective barrier by impeding the solid-state diffusion of oxygen, severe subsurface oxidation was observed due to the interconnected vermicular graphite covered by aluminum oxides after decarburization. Furthermore, based on nonisothermal oxidation experiments, the effective activation energy of oxidation was found to be significantly increased by the addition of aluminum, even though the oxidation activation energies of SiMoAl samples exhibited small changes in comparison to each other. Additionally, thermophysical analysis demonstrated a substantial decrease in the thermal conductivity and a slight increase in the thermal expansion with the addition of aluminum.

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Section: Introductionmentioning

confidence: 99%

High Temperature Oxidation Behavior of High Al-Si Alloyed Vermicular Graphite Cast Iron for Internal Combustion Engine’s Hot-End Exhaust Components

Yilmaz,

Bayata,

Solak

2024

Metals

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“…The failure of the exhaust manifold is mainly attributed to material with which the components are made of up that can withstand the excessive temperature and forces acting on it during the service. The most common failures in exhaust manifolds are in the form of breaking and spillage [12,13]. These are closely related to the manifold's shape and various other parameters.…”

Section: Introductionmentioning

confidence: 99%

Modelling of single and multi-port manifolds and studying the influence of structural and thermal behaviour on exhaust manifolds used in automotive applications

Rajole

Twinkle

Chiniwar

et al. 2022

Int J Interact Des Manuf

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With the new pollution control rules and surging requirements for the increase in efficiency of the internal combustion engines, designing the exhaust manifold has become a growing area of interest. The present work focuses on modelling the multi-end exhaust manifold and comparing it with the single-end exhaust manifold. Both the structural and thermal analyses are carried out using the finite element method. Along with the modified design, various materials such as mild steel, cast iron, stainless steel and medium carbon steel are also evaluated for their structural and thermal behaviour. It is found that the multi-end exhaust manifold performs better in terms of better stress and temperature distribution in comparison to the single-end exhaust manifold. The magnitude of the stress experienced by multi-end exhaust manifolds is 20 MPa lesser than single-end exhaust manifolds. However, the change in material has a marginal effect in terms of stress and temperature distribution.

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“…Etkilenen motor komponentlerinin başında egzoz manifold gelmektedir. Egzoz manifoldunun tasarımı motor performansını, yakıt tüketimini etkilemekle kalmaz, aynı zamanda çevresel kirliliğine de etkisi bulunmaktadır[4]. İlgili motorda, yapısal esneklik, ısıl genleşmeye karşı dayanım, kolay montaj ve demontaj için 6 silindirli bir ticari dizel motorun egzoz manifoldu 3 parça şeklinde tasarlanmıştır.…”

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Design and Analysis of the Exhaust Manifold in a 6-Cylinder Commercial Diesel Engine

Kaya,

Büyük,

Öztürk

2023

OPRD

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The exhaust manifold is one of the engine parts in internal combustion engines that operates under the influence of high temperatures. To prevent issues arising from the expansion movement due to high temperature effects, the exhaust manifold of a 6-cylinder commercial diesel engine has been designed in three parts. Sealing rings that can withstand high temperatures are used in the three-part exhaust manifold to prevent gas leaks. For the exhaust manifold, 1-dimensional, thermal, flow, and structural analyses have been performed. Initially, based on the structural analysis of the exhaust manifold conducted without sealing rings, sealing ring selection was made according to the deformation values of the exhaust manifold. In the structural analysis, the PEEQ (equivalent plastic strain) method, which is utilized to determine the thermomechanical fatigue crack initiation area, is employed. In this study, an approach using this method was undertaken, and the crack initiation area was examined.

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Failure Analysis of a Diesel Engine Exhaust Manifold

Cited by 6 publications

References 31 publications

High Temperature Oxidation Behavior of High Al-Si Alloyed Vermicular Graphite Cast Iron for Internal Combustion Engine’s Hot-End Exhaust Components

High Temperature Oxidation Behavior of High Al-Si Alloyed Vermicular Graphite Cast Iron for Internal Combustion Engine’s Hot-End Exhaust Components

Modelling of single and multi-port manifolds and studying the influence of structural and thermal behaviour on exhaust manifolds used in automotive applications

Design and Analysis of the Exhaust Manifold in a 6-Cylinder Commercial Diesel Engine

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