Comparison of tribological performances of sulfur based and boron succuminide containing antiwear additive with ZDDP by engine bench tests

• Published in: Industrial lubrication and tribology Vol. 68; no. 4; pp. 482 - 496
• Main Authors: Özkan, Doğuş, Yağci, M. Barış, Birer, Özgür, Kaleli, Hakan
• Format: Journal Article
• Language: English
• Published: Bradford Emerald Group Publishing Limited 13-06-2016
• Subjects: Antiwear additives; Automobiles; Boron; Catalysis; Engine tests; Engines; Fourier transforms; Friction; Lubricants & lubrication; Lubricating oils; Lubrication; Organic chemistry; Phosphorus; Piston rings; Scanning electron microscopy; Spectrum analysis; Sulfur; Surface analysis (chemical); Tribology; Zinc; Zinc dialkyldithiophosphates; ZDDP free; Abrasive wear; Surface analysis; Lubricant additives; SEM/EDX analysis
• ISSN: 0036-8792; 1758-5775
• DOI: 10.1108/ILT-11-2015-0173

Purpose
This study aims to evaluate and compare by 100 hours engine bench tests the tribological performances of two types of lubrication oils, which were sulfur-based, boron succinimide-containing antiwear package (NP-3) oil and conventional zinc dialkyldithiophosphate (ZDDP)-containing (R-1) oil.
Design/methodology/approach
The tribological performances of the oils were evaluated in three main contexts, including engine tests, physical/chemical changes and surface analysis.
Findings
Results showed that NP-3 lubrication oil, which was environment- and catalyst-friendly, can be an alternative lubrication oil with its tribological performance due to similar antiwear characteristics with the ZDDP.
Originality/value
Attempts to develop catalysis- and environment-friendly antiwear additive packages have not presented popular or commonly used ZDDP-free products for the vehicle industry. This study presents tribological characterization of a newly developed ZDDP-free lubricating oil by engine bench tests.