DATE CONFIDENTIEL PROPRIÉTÉ RENAULT Nicolas HAREL Sam TRIPATHY Shorten range Test Procedure: Impact of constant speed on Range determination

2 Nicolas HAREL Sam TRIPATHY CSC M 100 km/h CSC E 100 km/h Segment 1 Segment 2 Shortening of test procedure: Method The Constant Speed Cycle (CSC) phases are made to discharge the storage faster than driving consecutive WLTCs. These two phases are key to reduction of test time During the last few eLab meeting question were asked about the impact of the constant speed on the range determined with ‘Shorten range Test Procedure’ The objective of this document is to summaries the results provided on this topic

3 Shortening of test procedure: Impact of constant speed 4 simulations are performed Consecutive WLTC cycle Shorten range test with 80 km/h Shorten range test with 97 km/h Shorten range test with 120 km/h Depending on the total range of the PEV, the reduction in test time can go beyond 50% compare to the consecutive WLTC test procedure All the results are compared to consecutive WLTC cycle results With increase in constant speed the range decreases Renault simulation results

4 Shortening of test procedure: Impact of constant speed Results already provided by Japan (WLTP-SG-EV-08-03)

5 Shortening of test procedure: Impact of constant speed Results already provided by BMW in the last eLab meeting

6 Shortening of test procedure: Impact of constant speed- Conclusion All simulations (Japan, BMW, Renault) shows that : The proposed shorten range test procedure gives slightly worst case results compare to the consecutive WLTC cycle test The increase in the speed of CSC (constant speed cycle) decreases significantly the test duration and hence reduces the test burden With increase in CSC, the thermal loss increases. This thermal loss reduces the ‘Usable Battery Energy’ The increase in the speed of CSC decreases the range determined from STP. The proposed constant speed of 100 km/h gives slightly worst result than the consecutive cycle but stays with the tolerance of 0 to -1%