Document ID: chunk:federal_register_of_legislation:F2022C00213:reg:120:p17
Version: federal_register_of_legislation:F2022C00213
Segment Type: reg
Provision Reference: reg 120 (pt 17/56)
Character Range: 201475–204394

these measurements have been performed in accordance with the procedure described in this annex.

     1.3. The method described in this annex shall be used by the Technical Service for the measurement of the electricity balance Q, as defined in paragraphs 5.3.4.1., 5.3.6.1., 6.3.4.1., and 6.3.6.1. of this annex.

     2. Measurement equipment and instrumentation

     2.1. During the tests as described in paragraphs 5. and 6. of this annex, the battery current shall be measured using a current transducer of the clamp-on type or the closed type.  The current transducer (i.e. the current sensor without data acquisition equipment) shall have a minimum accuracy of 0.5 per cent of the measured value or 0.1 per cent of the maximum value of the scale.

      OEM diagnostic testers are not to be used for the purpose of this test.

     2.1.1. The current transducer shall be fitted on one of the wires directly connected to the battery.  In order to easily measure battery current using external measuring equipment, manufacturers should preferably integrate appropriate, safe and accessible connection points in the vehicle.  If that is not feasible, the manufacturer is obliged to support the Technical Service by providing the means to connect a current transducer to the wires connected to the battery in the above described manner.

     2.1.2. The output of the current transducer shall be sampled with a minimum sample frequency of 5 Hz.  The measured current shall be integrated over time, yielding the measured value of Q, expressed in Ampere hours (Ah).

     2.1.3. The temperature at the location of the sensor shall be measured and sampled with the same sample frequency as the current, so that this value can be used for possible compensation of the drift of current transducers and, if applicable, the voltage transducer used to convert the output of the current transducer.

     2.2. A list of the instrumentation (manufacturer, model no., serial no.) used by the manufacturer for determining the correction factors Kfuel and KCO2 (as defined in paragraphs 5.3.3.2., 5.3.5.2., 6.3.3.2., and 6.3.5.2. of this annex) and the last calibration dates of the instruments (where applicable) should be provided to the Technical Service.

     3. Measurement procedure

     3.1. Measurement of the battery current shall start at the same time as the test starts and shall end immediately after the vehicle has driven the complete driving cycle.

     3.2.                 Separate values of Q shall be logged over the Part One and Part Two of the cycle.

       Annex 9

       METHOD OF MEASURING THE ELECTRIC RANGE OF VEHICLES POWERED BY
       AN ELECTRIC POWER TRAIN ONLY OR BY A HYBRID ELECTRIC POWER TRAIN

       1. MEASUREMENT OF THE ELECTRIC RANGE

        The test method described hereafter permits to measure the electric range, expressed in km, of vehicles powered by