Appendix 6

The maximum torque method consists on confirming that a point on the reference maximum torque curve as a function of the engine speed has been reached during the in-service monitoring test.

If a point on the reference maximum torque curve as a function of the engine speed has not been reached during the in-service monitoring test, the manufacturer is entitled to modify the load activity of the non-road mobile machinery and/or the minimum test duration set out in point 2 of Appendix 2 as necessary in order to perform that demonstration after the in-service monitoring test.

The requirements set out in point 1.2 shall not be applied in the case that, in the opinion of the manufacturer and prior agreement of the type approval authority, it is not possible to reach a point on the maximum torque curve under normal operation without overloading the engine installed in the non-road mobile machinery, or to do so would not be safe.

In this case, the manufacturer shall propose to the approval authority an alternative method for checking the signal. The alternative method shall be employed only if the approval authority considers it feasible and applicable without overloading the engine or any safety risk.

The manufacturer may propose to the approval authority, a more accurate and complete method for checking the conformity of the ECU torque signal during the in-service monitoring test than the method set out in points 1.1 to 1.4. In that case, the method proposed by the manufacturer shall be used instead of the method set out in those points.

When the manufacturer demonstrates to the approval authority that it is not possible to check the ECU torque signal during the in-service monitoring test, the verification performed during the tests required for EU type-approval and stated in the EU type-approval certificate shall be accepted by the approval authority.