Cylinder Head Gasket Fretting/Scrub Mechanism Investigation and Analysis Procedure Developments

Brewer, Todd; Chen, Xingfu

doi:10.4271/2017-01-1091

Cited by 6 publications

(1 citation statement)

References 1 publication

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“…The cylinder gasket, located between the cylinder block and the cylinder head, acts as a critical sealing part to avoid the burned gas from leaking. It not only bears the pretension exerted by the cylinder head bolt, but also suffers high temperature, high pressure and additional force between the joint surfaces [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Thermo-Mechanical Analysis of the Sealing Performance of a Diesel-Engine Cylinder Gasket

Wang¹,

Chen²,

Chang-zhen³

et al. 2021

Fluid Dynamics &Amp; Materials Processing

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Taking the combustor composite structure of a high-strength diesel engine as the main research object, dedicated tests have been conducted to verify the accuracy of three distinct cylinder gasket pressure simulation models. Using the measured cylinder gasket compression rebound curve, a gasket unit has been designed and manufactured. For this unit, the influence of the bolt pretension, cylinder body and cylinder head material on gasket sealing pressure has been investigated systematically in conditions of thermo-mechanical coupling. The results show that the bolt pretension force is one of the most important factors affecting the cylinder gasket sealing pressure. The change of the body material has little effect on this pressure. The cylinder gasket seal pressure decreases progressively with the reduction of the elastic module of the cylinder head material.

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Section: Introductionmentioning

confidence: 99%

Thermo-Mechanical Analysis of the Sealing Performance of a Diesel-Engine Cylinder Gasket

Wang¹,

Chen²,

Chang-zhen³

et al. 2021

Fluid Dynamics &Amp; Materials Processing

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show abstract

Modelling Strategy and Parametric Study of Metal Gaskets for Automotive Applications

Delprete¹,

Rosso²

2020

Computer Modeling in Engineering &Amp; Sciences

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Cylinder Head Gasket Fretting Simulation for High Horse Power Engine

Sangle¹,

Ozarde²,

McNay³

2019

SAE Int. J. Adv. & Curr. Prac. in Mobility

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<div class="section abstract"><div class="htmlview paragraph">The head gasket of an internal combustion engine acts as a critical seal between its cylinder block and heads. Typically, and ideally, a high horse power engine head gasket will be composed of elastomer fluid sealing elements in a carrier and combustion seal body composed of aluminum, brass, carbon steel, copper, nickel, and/or stainless steel etc. The head gaskets purpose is to seal high pressure combustion gases, coolant, and oil and to ensure no leakage of gases or fluids out of the block to head joint.</div><div class="htmlview paragraph">Three major failure modes [<span class="xref">1</span>] for cylinder head gasket joint are; 1. Fluid or gas leakage due to low sealing pressure. 2. Head gasket (bead) cracking due to high gap alternation and 3. Gasket scrubbing/fretting due to pressure and temperature fluctuations causing relative movement in the joint. During engine operation, the head gasket design should be robust enough to prevent all failure modes and provide acceptable performance. Sealing analysis method to address low sealing pressure failure mode is well developed and common within the industry. This paper is focused on the development and utilization of an analytical method for the 3<sup>rd</sup> failure mode mentioned above i.e., scrubbing/fretting. Single layer metal gasket is considered during the scope of mentioned method. Single layer metal gasket gets locally yielded due to the design feature provided on the cylinder liner, called as bite ring.</div><div class="htmlview paragraph">During the scope of work, head gasket fretting mechanism is investigated. Based on the understanding of the fundamental fretting mechanism, considering Ruiz model [<span class="xref">2</span>], an analysis procedure is developed and finite element analysis results are correlated with actual failures and measured data. Finite element analysis results shows very good correlation in terms of relative sliding magnitude and failure location prediction. Commercial software ANSYS is used here. Actual gasket crushing is simulated by using 3D solid elements with non-linear material and geometric non linearity captured.</div></div>

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Cylinder Head Gasket Fretting/Scrub Mechanism Investigation and Analysis Procedure Developments

Cited by 6 publications

References 1 publication

Thermo-Mechanical Analysis of the Sealing Performance of a Diesel-Engine Cylinder Gasket

Thermo-Mechanical Analysis of the Sealing Performance of a Diesel-Engine Cylinder Gasket

Modelling Strategy and Parametric Study of Metal Gaskets for Automotive Applications

Cylinder Head Gasket Fretting Simulation for High Horse Power Engine

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