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All Journal Jurnal Ilmu Pertanian Indonesia ACTA VETERINARIA INDONESIANA Hemera Zoa Jurnal Veteriner Medical Journal of Indonesia Jurnal Kedokteran Hewan Scientific Contribution Oil and Gas LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI
Setyo Widodo
PPPTMGB LEMIGAS, Balitbang KESDM, Jl. Ciledug Raya, Kav. 109, Cipulir, Kebayoran Lama, Jakarta, 12230, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Engineering Environmental Science Immunology & microbiology Medicine & Pharmacology Veterinary

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Journal : Scientific Contribution Oil and Gas

 1 
TRIBOLOGICAL PROPERTIES OF MINERAL BASE OILS WITH TUNGSTEN DISULPHIDE?(WS2) NANOPARTICLES IN BOUNDARY LUBRICATION CONDITIONS Setyo Widodo; M Hanifuddin; Rona Malam Karina
Scientific Contributions Oil and Gas Vol. 39 No. 2 (2016): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.39.2.266

Abstract

Friction affects the efficiency of a mechanical system. This paper discusses the influence of Tungsten Disulphide (WS2) as a friction modifier (FM). Friction and wear characteristics of base oil as a result of the addition of 0.1% and 0.5 % weight of WS2 were studied. WS2 nanoparticles were mixed with base oil using magnetic stirrer at 50oC for 60 minutes, then were homogenized in an ultrasonic homogenizer for 1 hour. Friction and wear characteristic of these mixtures were tested using four-ball and HFRR test-rig. The results show that the addition of both 0.1% and 0.5% WS2 nanoparticles increased by around 40% the anti-wear characteristic of mineral base oil group I and 12% for other groups of base oils. The increase in friction coefficients was in a range of 7.5% to 35% as a result of the addition of additives.
DESIGN OF LUBRICANTS FOR CNG-CONVERTED GASOLINE ENGINES Setyo Widodo; Muhammad Hanifuddin; Milda Fibre
Scientific Contributions Oil and Gas Vol. 39 No. 3 (2016): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.39.3.270

Abstract

The objective of this study is to develop a lubricant formula for the gasoline engine that has been converted to compressed natural gas (CNG-fueled). The lubricant specification is SAE 15W40 API SL. This study was conducted in six stages, namely; i). lubricant formulation, ii). laboratory scale production, iii). Laboratory analysis, iv). pilot scale production and laboratory analysis, v). test performance through bench test or a road test, vi). final data analysis and evaluation. A laboratory test of physical and chemical properties of lubricants refers to the Indonesian National Standard (SNI), followed by road tests up to the mileage of 10,000 kilometers. The result showed that the lubricant formula obtained can work well to 10,000 kilometers.
Co-Authors Agatha W. Sanjaya Agus Lelana Agus Wijaya Anita Esfandiari Chusnul Choliq Deskiharto, Arman Dondin Sajuthi Eko Sugeng Pribadi Erni H Purwaningsih Eva Harlina Heinrich Enbergs I Gusti Ngurah Sudisma I Ketut Sutama I W.T. Wibawan I wayan Teguh Wibawan IETJE WIENTARSIH Intan Maria Paramita Kadri, Febrina Suci Dwi Leni Maylina M Hanifuddin M. Hanifuddin Madyastuti, Rini Milda Fibre MIRNAWATI SUDARWANTO Muhammad Hanifuddin Retno Wulansari Rizal Rahadian Ramdhany Rona Malam K Rona Malam Karina Sherli Noviaria Pakpahan Sherly Noviaria Pakpahan Sus Derthi Widhyai Sus Derthi Widhyari TATI NURHAYATI Wijayanti, Revi Esti