Lookup NU author(s): Dr Yiji Lu,
Professor Tony Roskilly
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
In this paper, different value of fire-deck thickness on temperature, thermal stress and low cycle fatigue (LCF) life of cylinder head has been discussed and investigated. A 6-cylinder engine has been selected for CFD and thermal analysis. And a half model (3-cylinder) has been used for the stress and corresponding LCF calculation because of the identical structure among cylinders. The thermal condition of cylinder head is calculated with the conjugate heat transfer (CHT) simulation between cylinder head and coolant. The results shows that temperature variation among different cylinders is tiny. With the fire-deck thickness (FDT) increased, the temperature and thermal stress on cylinder head fire-face raised apparently, while the LCF life is reduced. When the FDT increases from 9 to 13, the thermal stress, peak and average temperature on cylinder head fire face is increased by 10.85%, 5.89% and 4.76%, respectively. The corresponding LCF life is reduced from 9875 to 5730 times.
Author(s): Chen XQ, Lu YJ, Huang R, Sun Z, Yu XL, Roskilly AP
Publication type: Article
Publication status: Published
Journal: Energy Procedia
Print publication date: 01/12/2017
Online publication date: 31/01/2018
Acceptance date: 02/04/2016
ISSN (electronic): 1876-6102
Publisher: Elsevier BV
Notes: 9th International Conference on Applied Energy
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