ISO 18854:2015规定了在试验台上稳态条件下往复式内燃机（RIC）的气体和颗粒废气排放的测量和评估方法，这对于确定每个废气污染物的一个加权值是必要的。发动机负载和转速的不同组合反映了不同的发动机应用。 适用于安装在船体长度不超过24米的小艇上的RIC船用发动机。

ISO 18854:2015 specifies the measurement and evaluation methods for gaseous and particulate exhaust emissions from reciprocating internal combustion (RIC) engines under steady-state conditions on a test bed, necessary for determining one weighted value for each exhaust gas pollutant. Various combinations of engine load and speed reflect different engine applications. It is applicable to RIC marine engines intended to be installed in small craft up to 24 m length of hull.