Division 3.2.1 GeneralF1

Deterioration factors applicable to an engine family, group of engine families or an engine-after-treatment system family shall be developed from the selected engines based on a service accumulation schedule that includes periodic testing for gaseous and particulate emissions over each test cycle applicable to the engine category, as given in Annex IV to Regulation (EU) 2016/1628. In the case of non-road transient test cycles for engines of category NRE ( ‘ NRTC ’ ), only the results of the hot-start run of the NRTC ( ‘ hot-start NRTC ’ ) shall be used.