Document ID: chunk:federal_register_of_legislation:F2023L00129:front:0:p16
Version: federal_register_of_legislation:F2023L00129
Segment Type: other
Provision Reference: 
Character Range: 44725–47797

filter, or any other emission reducing device, that is installed downstream of the engine;

              2.28. "Gaseous pollutants" means the exhaust gas emissions of carbon monoxide, NOx, expressed in NO2 equivalent, hydrocarbons (i.e. total hydrocarbons, non-methane hydrocarbons and methane);

              2.29. "General Denominator" means a counter indicating the number of times a vehicle has been operated, taking into account general conditions;

              2.30. "Group of monitors" means, for the purpose of assessing the in-use performance of an OBD engine family, a set of OBD monitors used for determining the correct operation of the emission control system;

              2.31. "Ignition cycle counter" means a counter indicating the number of engine starts a vehicle has experienced;

              2.32. "In-Use performance ratio" (IUPR) means the ratio of the number of times that the conditions have existed under which a monitor, or group of monitors, should have detected a malfunction relative to the number of driving cycles relevant for the operation of that monitor or group of monitors;

              2.33. "Low speed (nlo)" means the lowest engine speed where 50 per cent of the declared maximum power occurs;

              2.34. "Malfunction" means a failure or deterioration of an engine system, including the OBD system, that might reasonably be expected to lead either to an increase in any of the regulated pollutants emitted by the engine system or to a reduction in the effectiveness of the OBD system;

              2.35. "Malfunction indicator" (MI) means an indicator which is part of the alert system and which clearly informs the driver of the vehicle in the event of a malfunction;

              2.36. "Manufacturer" means the person or body who is responsible to the Type Approval Authority for all aspects of the type approval or authorisation process and for ensuring conformity of production. It is not essential that the person or body be directly involved in all stages of the construction of the vehicle, system, component or separate technical unit which is the subject of the approval process;

              2.37. "Maximum net power" means the maximum value of the net power measured at full engine load;

              2.38. "Net power" means the power obtained on a test bench at the end of the crankshaft or its equivalent at the corresponding engine or motor speed with the auxiliaries according to UN Regulation No. 85 and determined under reference atmospheric conditions;

              2.39. "Non-emission-related maintenance" means the maintenance which does not substantially affect emissions and which does not have a lasting effect on the emissions deterioration of the vehicle or the engine during normal in-use operation once the maintenance is performed;

              2.40. "On-board diagnostic system" (OBD system) means a system on-board of a vehicle or engine which has the capability of:

                  (a) Detecting malfunctions, affecting the emission performance of the engine system;