THE EFFECT OF INTERACTIONS BETWEEN ADDITIVES AND ZDDP ON THE ANTIWEAR PROPERTIES OF ENGINE OIL

The influences of metallic detergents and additional anti-oxidation additives on antiwear properties of ZDDP by using the cam-lifter wear test,four-ball seizure test and XPS analysis were studied.The results showed that metallic detergents and additives affected the antiwear performances of ZDDP by decreasing the absorption to phosphors,the proper additives to be selected could make the influence to ZDDP minimum.