1.1 ISO 15550:2016规定了使用液体或气体燃料的商用内燃机功率、燃料消耗量、润滑油消耗量和试验方法的标准参考条件和方法。适用于以下情况: a） 往复式内燃机（RIC）发动机（火花点火或压燃式发动机），但不包括自由活塞发动机； b） 旋转活塞发动机。 这些发动机可以使用机械增压器或涡轮增压器自然吸气或增压。 1.2 ISO 15550:2016适用于用于以下用途的发动机: a） ISO 3046-1中定义的陆地、铁路牵引和海上使用； b） ISO 1585和ISO 2534中定义的汽车推进； c） ISO 4106中定义的摩托车； d） 农业拖拉机和机器的推进 e） ISO 9249中定义的土方机械的推进； f） 按照ISO 8665的规定，娱乐船或其他小型船舶的推进长度不超过24米。 ISO 15550:2016可适用于用于推进道路施工机械、工业卡车的发动机，以及不存在适用于这些发动机的国际标准的其他应用。 它还可以应用于在制造商工厂的试验台上以及现场进行的试验。

1.1 ISO 15550:2016 specifies standard reference conditions and methods of declaring the power, fuel consumption, lubricating oil consumption and test methods for internal combustion engines in commercial production using liquid or gaseous fuels. It is applicable to the following: a) reciprocating internal combustion (RIC) engines (spark-ignition or compression-ignition engines) but excluding free piston engines; b) rotary piston engines. These engines can be naturally aspirated or pressure-charged either using a mechanical pressure-charger or turbocharger. 1.2 ISO 15550:2016 is applicable to engines used for the following: a) land, rail-traction and marine use as defined in ISO 3046？1; b) the propulsion of automotive vehicles as defined in ISO 1585 and ISO 2534; c) motorcycles as defined in ISO 4106; d) the propulsion of agricultural tractors and machines e) the propulsion of earth-moving machinery as defined in ISO 9249; f) the propulsion of recreational craft or other small marine craft up to 24 m hull length as defined in ISO 8665. ISO 15550:2016 can be applied to engines used to propel road construction machines, industrial trucks and for other applications where no suitable International Standard for these engines exists. It also can be applied to tests performed both on a test bed at a manufacturer's works as well as on site.