Division 3 Testing procedure for transmissions

For testing the losses of a transmission the torque loss map for each individual transmission type shall be measured. Transmissions may be grouped into families with similar or equal CO₂-relevant data following the provisions of Appendix 6 to this Annex.

For the determination of the transmission torque losses, the applicant for a certificate shall apply one of the following methods for each single forward gear (crawler gears excluded).

1. (1)

   Option 1: Measurement of the torque independent losses, calculation of the torque dependent losses.

2. (2)

   Option 2: Measurement of the torque independent losses, measurement of the torque loss at maximum torque and interpolation of the torque dependent losses based on a linear model

3. (3)

   Option 3: Measurement of the total torque loss.