申请人:IDEMITSU KOSAN COMPANY LIMITED
公开号:EP1057884A1
公开(公告)日:2000-12-06
There is disclosed a traction drive fluid which comprises a base oil blended with (A) an active phosphate ester base compound, (B) a boron-containing imide base dispersant (e.g. polyalkenyl succinimide treated with a boron compound ) and (C) a boron-free imide base dispersant (e.g. polyalkenyl succinimide) in such blending amounts that the phosphorus content derived from the component (A) and the boron content derived from the component (B) are each 100 to 600 ppm, preferably 60 to 300 ppm by weight, and at least 60 ppm by weight, respectively based on the base oil, and the boron-free imide base dispersant (C) is blended so that the ratio by weight of the nitrogen in the component (C) to the boron in the component (B) is at least 1, preferably 1 to 6. The traction drive fluid has excellent wear resistance and excellent scoring resistance of a steel material element, is capable of suppressing surface damage such as peeling of a friction material and in particular, is well suited for use as a lubricating oil for a traction drive continuous variable transmission used in an automobile.
本发明公开了一种牵引传动液,它由基础油与 (A) 活性磷酸酯基化合物、(B) 含硼酰亚胺基分散剂(如用硼化合物处理过的聚烯基琥珀酰亚胺)和 (C) 无硼酰亚胺基分散剂(如聚烯基琥珀酰亚胺)混合而成,混合量为从组分 (A) 中提取的磷含量和从组分 (B) 中提取的硼含量各为 100 至 600 ppm,优选 60 至 600 ppm。(C) 无硼亚胺基分散剂(如聚烯基琥珀酰亚胺),其混合量为,以基础油为基准,由组分 (A) 产生的磷含量和由组分 (B) 产生的硼含量按重量计分别为 100 至 600 ppm,优选 60 至 300 ppm,以及至少 60 ppm,并且混合无硼亚胺基分散剂 (C),使组分 (C) 中的氮与组分 (B) 中的硼的重量比至少为 1,优选 1 至 6。该牵引传动液具有优异的耐磨性和钢材料元件优异的抗划伤性,能够抑制表面损伤,如摩擦材料的剥落,特别适合用作汽车中使用的牵引传动无级变速器的润滑油。