基础油烃类组成对1-H2试验的影响──MVI和HVI基础油添加剂配方互换的可能性

INFLUENCE OF CHEMICAL COMPOSITIONS OF BASE OILS ON CATERPILLAR 1-H2 ENGINE TEST──INTERCHANGEABILITY ON THE FORMULATIONS BETWEEN MVI & HVI BASE OILS

按API基础油换用规则，新疆MVI基础油粘度指数小于80，应属于第三类基础油。它的添加剂配方或复合剂不能换用第一类基础油，如大庆HVI基础油或第二类基础油，如加氢处理基础油。否则应重做全部发动机试验予以确认。然而API基础油换用规则有局限性。试验结果表明，用于新疆MVI基础油的CC级油配方或复合剂可以换用于大庆HVI基础油；而用于大庆HVI基础油的CC级添加剂配方或复合剂却不能换用于新疆MVI基础油。

The MVI base oils from Xinjiang crude are group 3 in accordance with the base oil interchangeability guidelines. All engine tests are reguired to be done if exchange group 3 and group 1 (or group 2). There is limitation in the guidelines. Engine tests show that formulations for MVI base oils can be changed to HVI base oils (group 1 ), but the formulations for HVI base oils are not changed to MVI base oils