ISO 24254-2007 润滑剂、工业用油和相关产品(L级).E族(内燃机油).四冲程循环摩托车汽油发动机和相关动力传动系统用油的规范(EMA和EMB类)

标准号：ISO 24254-2007
中文标准名称：润滑剂、工业用油和相关产品(L级).E族(内燃机油).四冲程循环摩托车汽油发动机和相关动力传动系统用油的规范(EMA和EMB类)
英文标准名称：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 associated drivetrains (categories EMA and EMB)
标准类型：E30
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：E30
国际标准分类号：75.100
适用范围：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.