Tribological characteristics comparison of formulated palm trimethylolpropane ester and polyalphaolefin for cam/tappet interface of direct acting valve train system

Rehan Zahid*, Masjuki Hj. Hassan, Abdullah Alabdulkarem, Mahendra Varman, Md Abul Kalam, Riaz Ahmad Mufti, Nurin Wahidah Mohd Zulkifli, Mubashir Gulzar, Muhammad Usman Bhutta, Mian Ashfaq Ali, Muhammad Usman Abdullah, Robiah H. Yunus

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

12 Citations (Scopus)

Abstract

There is a continuous drive in automotive sector to shift from conventional lubricants to environmental friendly ones without adversely affecting critical tribological performance parameters. Because of their favorable tribological properties, chemically modified vegetable oils such as palm trimethylolpropane ester (TMP) are one of the potential candidates for the said role. To prove the suitability of TMP for applications involving boundary-lubrication regime such as cam/tappet interface of direct acting valve train system, a logical step forward is to investigate their compatibility with conventional lubricant additives.

Original languageEnglish
Pages (from-to)888-901
Number of pages14
JournalIndustrial Lubrication and Tribology
Volume70
Issue number5
Early online date26 Jun 2018
DOIs
Publication statusPublished - 9 Jul 2018

Bibliographical note

Funding Information:
The authors would like to acknowledge the University of Malaya and Malaysian Ministry of Higher Education (MOHE) for funding this research through the High Impact Research Chancellory grant project titled “Development of Alternative and Renewable Energy Carrier”, Grant No. UM.C/HIR/MOHE/ENG/60, University of Malaya Research Grant (UMRG) under the IPPP (Institut Pengurusan Penyelidikan dan Perundingan) Fund Project No. PG200-2016A and International Scientific Partnership Program (Ref no. ISPP#0092) at King Saud University (KSU), Saudi Arabia.

Publisher Copyright:
© 2018, Emerald Publishing Limited.

Keywords

  • Bio-lubricants
  • Direct-acting valve train system
  • Friction torque
  • Lubricant additives
  • Tappet rotation
  • Wear

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