Document ID: chunk:federal_register_of_legislation:F2023L01529:body:0:p37
Version: federal_register_of_legislation:F2023L01529
Segment Type: other
Provision Reference: 
Character Range: 103378–106332

gas.

       5. Test procedure

        The test consists in the five following steps:

       (a) vehicle/REESS preparation;

       (b) discharge of theREESS;

       (c) determination of hydrogen emissions during a normal charge;

       (d) discharge of the traction battery;

           (e) determination of hydrogen emissions during a charge carried out with the charger failure.

        If the vehicle/REESS has to be moved between two steps, it shall be pushed to the following test area.

       5.1. Vehicle  based test

       5.1.1. Vehicle preparation

        The ageing of REESS shall be checked, proving that the vehicle has performed at least 300 km during seven days before the test.  During this period, the vehicle shall be equipped with the traction battery submitted to the hydrogen emission test.  If this cannot be demonstrated then the following procedure will be applied.

       5.1.1.1. Discharges and initial charges of the REESS

        The procedure starts with the discharge of the REESS of the vehicle while driving on the test track or on a chassis dynamometer at a steady speed of 70 per cent ± 5 per cent of the maximum speed of the vehicle during 30 minutes.

        Discharging is stopped:

           (a) When the vehicle is not able to run at 65 per cent of the maximum thirty minutes speed, or

           (b) When an indication to stop the vehicle is given to the driver by the standard on-board instrumentation, or

           (c) After having covered the distance of 100 km.

       5.1.1.2. Initial charge of the REESS

        The charge is carried out:

           (a) With the charger;

           (b) In an ambient temperature between 293 K and 303 K.

       The procedure excludes all types of external chargers.

       The end of REESS charge criteria corresponds to an automatic stop given by the charger.

       This procedure includes all types of special charges that could be automatically or manually initiated like, for instance, the equalisation charges or the servicing charges.

       5.1.1.3. Procedure from paragraphs 5.1.1.1. and 5.1.1.2. shall be repeated two times.

       5.1.2. Discharge of the REESS

        The  REESS is discharged while driving on the test track or on a chassis dynamometer at a steady speed of 70 per cent ± 5 per cent from the maximum thirty minutes speed of the vehicle.

        Stopping the discharge occurs:

           (a) When an indication to stop the vehicle is given to the driver by the standard on-board instrumentation, or

           (b) When the maximum speed of the vehicle is lower than 20 km/h.

       5.1.3. Soak

        Within fifteen minutes of completing the battery discharge operation specified in paragraph 5.2., the vehicle is parked in the soak area. The vehicle is parked for a minimum of 12 hours and a maximum of 36 hours, between the end of the traction battery discharge and the start of the hydrogen emission test during