ISO 24254:2007 润滑剂、工业油和相关产品（L类） E族（内燃机油） 四冲程循环摩托车汽油发动机及相关动力传动系统用油规范（EMA类和EMB类）

标准编号：ISO 24254:2007

中文名称：润滑剂、工业油和相关产品（L类） E族（内燃机油） 四冲程循环摩托车汽油发动机及相关动力传动系统用油规范（EMA类和EMB类）

英文名称：Lubricants, industrial oils and related products (class L) — Family E (internal combustion engine oils) — Specifications for oils for use in four-stroke cycle motorcycle gasoline engines and associate

发布日期：2007-10

标准范围

This International Standard specifies the requirements of lubricating engine oils (hereinafter referred to as“four-stroke engine oils”) to be used in four-stroke cycle spark ignition gasoline engines employing a commonsump containing the lubricating oil for both the engine and associated drivetrain (transmission, clutch, starter)of motorcycles, motor scooters, all-terrain vehicles (ATVs) and related equipment. Classification of four-strokeengine oils is defined in ISO 6743-15 [1]. Among all of the categories covered by ISO 6743-15, thisInternational Standard includes categories EMA and EMB.This International Standard specifies the performance classification of four-stroke cycle gasoline engine oilsbased on physical and chemical properties, and three friction performance indices, which are derived from thefrictional properties of the lubricant, according to the JASO T904 test procedure1).NOTE For the purposes of this International Standard, the term “% (m/m)” is used to represent the mass fraction.

标准预览图