Commission Regulation (EU) 2017/2400Show full title

4.2. Option B: Measurement at constant input torque (in accordance with SAE J643) U.K.

4.2.1. General requirements U.K.

As specified in 4.1.1.

4.2.2. Oil temperature U.K.

As specified in 4.1.2.

4.2.3. Oil flow rate and pressure U.K.

As specified in 4.1.3.

4.2.4. Oil quality U.K.

As specified in 4.1.4.

4.2.5. Installation U.K.

As specified in 4.1.5.

4.2.6. Measurement equipment U.K.

As specified in 4.1.6.

4.2.7. Test procedure U.K.

4.2.7.1. Zero torque signal compensation U.K.

As specified in 3.1.6.1.

4.1.7.2. Measurement sequence U.K.

4.2.7.2.1. The input torque T_pum shall be set to a positive level at n_pum = 1 000 rpm with the output shaft of the TC held non-rotating (output speed n_tur = 0 rpm). U.K.

4.2.7.2.2. The speed ratio v shall be adjusted by increasing the output speed n_tur from 0 rpm up to a value of n_tur covering the usable range of v with at least seven evenly distributed speed points. U.K.

4.2.7.2.3. The step width shall be 0.1 for the speed ratio range of 0 to 0,6 and 0,05 for the range of 0,6 to 0,95. U.K.

4.2.7.2.4. The upper limit of the speed ratio may be limited to a value below 0,95 by the manufacturer. U.K.

4.2.7.2.5. For each step a minimum of 5 seconds stabilization time within the temperature limits defined in 4.2.2. is required. If needed, the stabilization time may be extended by the manufacturer to maximum 60 seconds. The oil temperature shall be recorded during the stabilization. U.K.

4.2.7.2.6. For each step the values specified in 4.2.8. shall be shall be recorded for the test point for 05-15 seconds. U.K.

4.2.7.2.7. The measurement sequence (4.2.7.2.1. to 4.2.7.2.6.) shall be performed two times in total. U.K.

4.2.8. Measurement signals and data recording U.K.

As specified in 4.1.8.

4.2.9. Measurement validation U.K.

As specified in 4.1.9.

4.2.10. Measurement uncertainty U.K.

As specified in 4.1.9.

4.2.11. Calculation of TC characteristics U.K.

As specified in 4.1.11.