Synergistic lubricating effects of ZDDP with a heterocyclic compound

Abstract

Purpose

In response to a plea to eliminate zinc dialkyldithiophosphate (ZDDP) in engine oil, or at least reduce it to 0.05 per cent, unfortunately no new antiwear additives to reduce ZDDP have been found until now. The aim of this paper, therefore, is to resolve these problems by designing a novel benzothiazole compound and using it as a performance‐enhancing agent for ZDDP.

Design/methodology/approach

A benzothiazole derivative containing dialkyldithiocarbamate (BSD) was synthesized. The antiwear and load‐carrying properties of the additive and their synergistic effects with ZDDP were evaluated by a four‐ball tester.

Findings

The additive BSD possessed good load‐carrying capacity, and exhibits good synergistic antiwear and load‐carrying properties with ZDDP. The tribo‐chemical mechanism was also proposed.

Originality/value

The paper provides a good ashless additive which has good antiwear properties, and fulfils an identified resources need, which can offer practical help in industrial applications and also to an individual starting out on an academic career.

Citation

Wan, Y. (2008), "Synergistic lubricating effects of ZDDP with a heterocyclic compound", Industrial Lubrication and Tribology, Vol. 60 No. 6, pp. 317-320. https://doi.org/10.1108/00368790810902250