Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:10:p13
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 10 (pt 13/150)
Character Range: 750381–753527

from the torque values according to paragraph A.1.2.4.4. of this appendix."

A.1.2.2.1. Data reporting format
               Emission values as well as any other relevant parameters shall be reported and exchanged as csv-formatted data file. Parameter values shall be separated by a comma, ASCII-Code #h2C. The decimal marker of numerical values shall be a point, ASCII-Code #h2E. Lines shall be terminated by carriage return, ASCII-Code #h0D. No thousands separators shall be used.
              A.1.2.3. Preparation of the vehicle
              The preparation of the vehicle shall include the following:
                  (a) The check of the OBD system: any identified problems once solved shall be recorded and presented to the Type Approval Authority;
              (b) The replacement of oil, fuel and reagent, if any.
              A.1.2.4. Installation of the measuring equipment
              A.1.2.4.1. Main unit
              Whenever possible, PEMS shall be installed in a location where it will be subject to minimal impact from the following:
              (a) Ambient temperature changes;
              (b) Ambient pressure changes;
              (c) Electromagnetic radiation;
              (d) Mechanical shock and vibration;
                  (e) Ambient hydrocarbons – if using a FID analyser that uses ambient air as FID burner air.
              The installation shall follow the instructions issued by the PEMS manufacturer.
              A.1.2.4.2. Exhaust flow meter
              The exhaust flow meter shall be attached to the vehicle's tailpipe. The EFM sensors shall be placed between two pieces of straight tube whose length should be at least 2 times the EFM diameter (upstream and downstream). It is recommended to place the EFM after the vehicle silencer, to limit the effect of exhaust gas pulsations upon the measurement signals.
              A.1.2.4.3. Global Positioning System
              The antenna shall be mounted at the highest possible location, without risking interference with any obstructions encountered during on-road operation.
A.1.2.4.4. Connection with the vehicle ECU
A data logger shall be used to record the engine parameters listed in Table 1. This data logger can make use of the Control Area Network (hereinafter CAN) bus of the vehicle to access the ECU data specified in Table 1 of Appendix 5 to Annex 9B and broadcasted on the CAN according to standard protocols such as SAE J1939, J1708 or ISO 15765-4. It may calculate the net brake engine torque or perform unit conversions.
              A.1.2.4.5. Sampling of gaseous emissions
              The sample line shall be heated according to the specifications of paragraph A.2.2.3. of Appendix 2 to this annex and properly insulated at the connection points (sample probe and back of the main unit), to avoid the presence of cold spots that could lead to a contamination of the sampling system by condensed hydrocarbons.
              The sample probe shall be installed in the exhaust pipe in accordance with the requirements of paragraph 9.3.10. of Annex 4.
              If the length of the sample line is changed, the system