This standard is formulated for the purpose of implementing Environmental Protection Law of the People’s Republic of China and Law of the People’s Republic of China on Prevention and Control of Air Pollution, and preventing the pollution to the environment by the exhaust pollutants from small spark ignition engines of non-road mobile machinery. This standard provides the limits and measurement methods for exhaust pollutants from small spark ignition engines of non-road mobile machinery during their Stages I and II type approval and verification of production conformity. This standard shall apply (but not limited) to the type approval and production conformity verification of engines which are used by the following non-road mobile machinery and with net power no more than 19kW.
Engines with net power above 19kW but size no more than 1L may refer to this standard. This standard shall not apply to engines used for the following purposes.
——Engines for propelling the ships;
——Engines used for underground mining or installed in underground mining facilities;
——Spare engines for emergency rescue;
——Vehicles for recreational purposes, e.g., sleds, off-road motorcycles, and all-terrain vehicles; ——Engines for export. This standard is the first version.
(This English version is for your reference only.In case any discrepancy exists between the Chinese and English context, the Chinese version shall prevail.)