Cylinder Head Design for High Peak Firing Pressures

Hamm, Thomas; Rebbert, Martin; Ecker, Hermann-Josef; Grafen, Marc

doi:10.4271/2008-01-1196

Cited by 14 publications

(7 citation statements)

References 1 publication

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“…Design solutions to the thermo-mechanical fatigue problems of diesel cylinder heads were provided by Kim et al (2005) and Hamm et al (2008). Maassen (2001) provided a detailed discussion on residual stresses, HCF and LCF for cylinder heads.…”

Section: Thermo-mechanical Fatigue Life Prediction Of Cylinder Headmentioning

confidence: 99%

“…Design solutions for the cracking problem include increasing the bending stiffness at the cracking location in order to reduce the amount of bending, and reducing the tensile residual stresses with better heat treatment process during manufacturing. Design solutions for cylinder head HCF problems were elaborated by Hamm et al (2008) with the use of minimum safety factors as design evaluation criteria to compare different designs.…”

Section: Hcf In Cylinder Headmentioning

confidence: 99%

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Durability and reliability in diesel engine system design

Xin¹

2013

Diesel Engine System Design

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Section: Thermo-mechanical Fatigue Life Prediction Of Cylinder Headmentioning

confidence: 99%

Section: Hcf In Cylinder Headmentioning

confidence: 99%

Durability and reliability in diesel engine system design

Xin¹

2013

Diesel Engine System Design

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“…As one of vulnerable parts in combustion chamber, cylinder head consists of inlet passages, exhaust passages, cooling water chambers, and valve seats. [1][2][3][4] Complex structures and working conditions make the behavior of fatigue damage in cylinder head extremely complicated. 5,6 Flame deck of cylinder head is directly in touch with the high temperature gas.…”

Section: Introductionmentioning

confidence: 99%

Effects analysis of thermo-mechanical loads on classified damage characteristics with the equivalent cylinder head model

Yang

Kang

Pang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part G:

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As a vulnerable part of diesel engine, cylinder head is periodically subjected to the thermo-mechanical coupling loads. While due to the restriction of complex structures and working conditions, it makes the damage mechanism of thermo-mechanical coupling still unclear. In this research, thermo-mechanical responses are predicted successfully by load spectrums and the Sehitoglu theory. Then the effects of working loads on classified damage characteristics are analyzed with the equivalent cylinder head model. The results show that the deviations of temperature and stress are, respectively, within 10°C and 30 MPa, and it verifies the effectiveness of simulated component. Operating speed takes the greatest effect on the thermo-mechanical characteristics, and bolt force and gas pressure are negatively correlated with the responses of stress and strain. Fatigue life and damage are determined by the values of working loads. The effect of temperature load is the most dominant, MechDam and OxidDam increase substantially when operating speed exceeds 3500 r/min. The research will provide a theoretical reference for engineering design and optimization of cylinder head.

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“…The maximum pressure in the cylinder reaches up to 200 bar (even higher on heavy commercial vehicles). The higher the maximum compressive strength of the engine in the cylinder, the more efficient combustion will be achieved and the amount of torque taken from the engine will increase [1]. During the engine development tests, the maximum pressure inside the cylinder must be monitored.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Peak value in Cylinder Firing Pressure in Diesel Engines using Artificial Neural Network Methodology

Bozdağ¹,

Özener²

2019

IJERAT

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From the past to the present, restrictions have been imposed on emissions due to the widespread use of internal combustion engines and the environmental damage caused by emissions. Engine manufacturers perform calibration studies by affecting the fuel-air parameters through the engine control unit to ensure emission limits. The maximum pressure due to the inside of the cylinder is called the maximum pressure inside the cylinder. In order for the engine to work properly, there is a cylindrical pressure resistance due to the material strength. When performing calibration work, the maximum pressure inside the cylinder should be monitored and maintained within the strength limits. In-cylinder pressure sensors are used in the in-cylinder pressure monitoring. Because the pressure sensors are exposed to high pressure (more than 200 bar or more in heavily heated), the values they read can be reduced or distorted. In this study, 6 different the artificial neural network (ANN) model design was created and trained with 2400 test points obtained from engine dynamometers system. Then these networks are tested again with 60 unused test points which are not used during training phases. Then the results are analyzed in terms of peak firing pressure difference. The research results showed that 2 neurons ANN system is best ANN system capable of predicting peak firing pressure within 1.7 bar average difference to measured data.

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Cylinder Head Design for High Peak Firing Pressures

Cited by 14 publications

References 1 publication

Durability and reliability in diesel engine system design

Durability and reliability in diesel engine system design

Effects analysis of thermo-mechanical loads on classified damage characteristics with the equivalent cylinder head model

Modeling of Peak value in Cylinder Firing Pressure in Diesel Engines using Artificial Neural Network Methodology

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