Commission Regulation (EU) 2017/2400Show full title

5. Run-in of newly manufactured engines

5.1 The tests shall be carried out on newly manufactured engines taken from the series production which have a maximum run-in time of 15 hours before the testrun for the verification of conformity of the certified CO₂ emissions and fuel consumption related properties in accordance with paragraph 4 of this Appendix is started.

5.2 At the request of the manufacturer, the tests may be carried out on engines which have been run-in up to a maximum of 125 hours. In this case, the running-in procedure shall be conducted by the manufacturer who shall not make any adjustments to those engines.

5.3 When the manufacturer requests to conduct a running-in procedure in accordance with point 5.2 of this Appendix it may be carried out on either of the following:

(a)

all the engines that are tested

(b)

newly produced engine, with the determination of an evolution coefficient as follows:

A.

The specific fuel consumption shall be measured over the WHSC test once on the newly manufactured engine with a maximum run-in time of 15 hours in accordance with point 5.1 of this Appendix and in the second test before the maximum of 125 hours set in point 5.2 of this Appendix on the first engine tested.

B.

The values for the specific fuel consumption of both tests shall be adjusted to a corrected value in accordance with paragraphs 7.2 and 7.3 of this Appendix for the respective fuel used during each of the two tests.

C.

The evolution coefficient of the fuel consumption shall be calculated by dividing the corrected specific fuel consumption of the second test by the corrected specific fuel consumption of the first test. The evolution coefficient may have a value less than one.

5.4 If the provisions defined in point 5.3 (b) of this Appendix are applied, the subsequent engines selected for testing of conformity of CO₂ emissions and fuel consumption related properties shall not be subjected to the running-in procedure, but their specific fuel consumption over the WHSC determined on the newly manufactured engine with a maximum run-in time of 15 hours in accordance with point 5.1 of this Appendix shall be multiplied by the evolution coefficient.

5.5 In the case described in point 5.4 of this Appendix the values for the specific fuel consumption over the WHSC to be taken shall be the following:

(a)

for the engine used for determination of the evolution coefficient in accordance with point 5.3 (b) of this Appendix, the value from the second test

(b)

for the other engines, the values determined on the newly manufactured engine with a maximum run-in time of 15 hours in accordance with point 5.1 of this Appendix multiplied by the evolution coefficient determined in accordance with point 5.3 (b)(C) of this Appendix

5.6. Instead of using a running-in procedure in accordance with points 5.2 to 5.5 of this Appendix, a generic evolution coefficient of 0,99 may be used at the request of the manufacturer. In this case the specific fuel consumption over the WHSC determined on the newly manufactured engine with a maximum run-in time of 15 hours in accordance with point 5.1 of this Appendix shall be multiplied by the generic evolution coefficient of 0,99.

5.7 If the evolution coefficient in accordance with point 5.3 (b) of this Appendix is determined using the parent engine of an engine family according to paragraphs 5.2.3. and 5.2.4. of Annex 4 to Regulation UN/ECE R.49.06, it may be carried across to all members of any CO₂-family belonging to the same engine family according to paragraph 5.2.3. of Annex 4 to Regulation UN/ECE R.49.06.