Investigation on heat transfer characteristics of ceramic coated piston crown for a CNGDI engines / Helmisyah Ahmad Jalaludin

Investigation on heat transfer characteristics of ceramic coated piston crown for a CNGDI engines / Helmisyah Ahmad Jalaludin

High temperature and pressure produced in an engine of compressed natural gas with direct injection system (CNGDI) may lead to high thermal stresses. With less proper heat transfer, the piston crown material fails to withstand high temperature and operate effectively. By insulating the surface namel...

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Main Author: Ahmad Jalaludin, Helmisyah
Format: Article
Language:English
Published: Faculty of Mechanical Engineering & UiTM Press 2015
Online Access:http://ir.uitm.edu.my/id/eprint/17640/
http://ir.uitm.edu.my/id/eprint/17640/2/AJ_HELMISYAH%20AHMAD%20JALALUDIN%20JME%2015.pdf
id uitm-17640
recordtype eprints
spelling uitm-176402019-07-25T01:39:57Z http://ir.uitm.edu.my/id/eprint/17640/ Investigation on heat transfer characteristics of ceramic coated piston crown for a CNGDI engines / Helmisyah Ahmad Jalaludin Ahmad Jalaludin, Helmisyah High temperature and pressure produced in an engine of compressed natural gas with direct injection system (CNGDI) may lead to high thermal stresses. With less proper heat transfer, the piston crown material fails to withstand high temperature and operate effectively. By insulating the surface namely; thermal barrier coating (TBC) such as ceramic based yttria partially stabilized zirconia (YPSZ), heat transfer to the piston might be reduced and lead to improvement of piston durability. Hence, in this research, YPSZ coating was utilised to differentiate between the uncoated and conventional tin-coated piston crowns in terms of the ability to reduce thermal stresses on the piston. Several samples of ACS A aluminium alloy piston crowns were coated with bonding element of NiCrAl and Zr02~7.5Y203 namely the YPSZ as the top coat by using plasma spraying technique. The coating surfaces were assessed on their microstructure, surface roughness, hardness, and burner rig test. The rig test showed that a better performance of the YPSZ/NiCrAl coating could withstand the tests. The burner rig test exhibited a higher temperature difference of the YPSZ/NiCrAl coated piston crown than the other piston crowns. The heat flux for the YPSZ/ NiCrAl-coated piston crown was about 98% reduction compared to the uncoated piston crown. Faculty of Mechanical Engineering & UiTM Press 2015 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/17640/2/AJ_HELMISYAH%20AHMAD%20JALALUDIN%20JME%2015.pdf Ahmad Jalaludin, Helmisyah (2015) Investigation on heat transfer characteristics of ceramic coated piston crown for a CNGDI engines / Helmisyah Ahmad Jalaludin. Journal of Mechanical Engineering, 12 (1). pp. 1-17. ISSN 1823-5514
repository_type Digital Repository
institution_category Local University
institution Universiti Teknologi MARA
building UiTM Institutional Repository
collection Online Access
language English
description High temperature and pressure produced in an engine of compressed natural gas with direct injection system (CNGDI) may lead to high thermal stresses. With less proper heat transfer, the piston crown material fails to withstand high temperature and operate effectively. By insulating the surface namely; thermal barrier coating (TBC) such as ceramic based yttria partially stabilized zirconia (YPSZ), heat transfer to the piston might be reduced and lead to improvement of piston durability. Hence, in this research, YPSZ coating was utilised to differentiate between the uncoated and conventional tin-coated piston crowns in terms of the ability to reduce thermal stresses on the piston. Several samples of ACS A aluminium alloy piston crowns were coated with bonding element of NiCrAl and Zr02~7.5Y203 namely the YPSZ as the top coat by using plasma spraying technique. The coating surfaces were assessed on their microstructure, surface roughness, hardness, and burner rig test. The rig test showed that a better performance of the YPSZ/NiCrAl coating could withstand the tests. The burner rig test exhibited a higher temperature difference of the YPSZ/NiCrAl coated piston crown than the other piston crowns. The heat flux for the YPSZ/ NiCrAl-coated piston crown was about 98% reduction compared to the uncoated piston crown.
format Article
author Ahmad Jalaludin, Helmisyah
spellingShingle Ahmad Jalaludin, Helmisyah
Investigation on heat transfer characteristics of ceramic coated piston crown for a CNGDI engines / Helmisyah Ahmad Jalaludin
author_facet Ahmad Jalaludin, Helmisyah
author_sort Ahmad Jalaludin, Helmisyah
title Investigation on heat transfer characteristics of ceramic coated piston crown for a CNGDI engines / Helmisyah Ahmad Jalaludin
title_short Investigation on heat transfer characteristics of ceramic coated piston crown for a CNGDI engines / Helmisyah Ahmad Jalaludin
title_full Investigation on heat transfer characteristics of ceramic coated piston crown for a CNGDI engines / Helmisyah Ahmad Jalaludin
title_fullStr Investigation on heat transfer characteristics of ceramic coated piston crown for a CNGDI engines / Helmisyah Ahmad Jalaludin
title_full_unstemmed Investigation on heat transfer characteristics of ceramic coated piston crown for a CNGDI engines / Helmisyah Ahmad Jalaludin
title_sort investigation on heat transfer characteristics of ceramic coated piston crown for a cngdi engines / helmisyah ahmad jalaludin
publisher Faculty of Mechanical Engineering & UiTM Press
publishDate 2015
url http://ir.uitm.edu.my/id/eprint/17640/
http://ir.uitm.edu.my/id/eprint/17640/2/AJ_HELMISYAH%20AHMAD%20JALALUDIN%20JME%2015.pdf
first_indexed 2023-09-18T22:58:44Z
last_indexed 2023-09-18T22:58:44Z
_version_ 1777418029742686208

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