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Commission Directive 2012/46/EUShow full title
Commission Directive 2012/46/EU of 6 December 2012 amending Directive 97/68/EC of the European Parliament and of the Council on the approximation of the laws of the Member States relating to measures against the emission of gaseous and particulate pollutants from internal combustion engines to be installed in non-road mobile machinery (Text with EEA relevance)
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8. Reagent dosing activity
8.1.The engine shall include a means of determining interruption of dosing.
8.2. Reagent dosing activity counter
8.2.1.A specific counter shall be attributed to the dosing activity (the “dosing activity counter”). The counter shall count the number of engine operating hours which occur with an interruption of the reagent dosing activity. This is not required where such interruption is demanded by the engine ECU because the machine operating conditions are such that the machine’s emission performance does not require reagent dosing.
8.2.1.1.Optionally, the manufacturer may group the reagent dosing failure together with one or more of the failures listed in Sections 7 and 9 into a single counter.
8.2.2.Details of the reagent dosing activity counter activation and deactivation criteria and mechanisms are described in Section 11.
8.3. Activation of the operator warning system
The operator warning system described in paragraph 4 shall be activated in the case of interruption of dosing which sets the dosing activity counter in accordance with paragraph 8.2.1. When the warning system includes a message display system, it shall display a message indicating the reason of the warning (e.g. “urea dosing malfunction”, “AdBlue dosing malfunction”, or “reagent dosing malfunction”).
8.4. Activation of the operator inducement system
8.4.1.The low-level inducement system described in paragraph 5.3 shall be activated if an interruption in reagent dosing is not rectified within a maximum of 10 engine operating hours after the activation of the operator warning system in paragraph 8.3.
8.4.2.The severe inducement system described in paragraph 5.4 shall be activated if an interruption in reagent dosing is not rectified within a maximum of 20 engine operating hours after the activation of the operator warning system in paragraph 8.3.
8.4.3.The number of hours prior to activation of the inducement systems shall be reduced in case of a repetitive occurrence of the malfunction according to the mechanism described in Section 11.
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