ACEA Comments from 27.02.2013 ACEA welcomes the idea to develop a shortened range test procedure based on MCT However, ACEA does not support JP proposal for SCT But ACEA needs more time to elaborate on the JP MCT proposal In addition, the proposed procedure is not totally clear, and ACEA would like to raise the following questions: how long does CSCm lasts would there be a benefit to start directly with CSCm as impact of first cycle is rather small (ca. 3%)? why is the WLTC sequence extended with Middle and Low cycle; what does it mean “...to prevent uneven condition...? what is the Break-off Criteria of the last CSCe? how to test vehicles that have shorter ranges than the proposed MCT test (e.g. weighting of first phases will dominate) how to test OVC HEV? would there be a benefit to test at higher CSC speeds to further shorten the procedure

Validation of Shorten test procedure for BEV range WLTP-DTP-E-Labproc082 prepared by Japan

Background For EV range test of BEV and OVC-HEV, Japan recommend a single cycle test (SCT) method to represent real world vehicle performance in the WLTP process. On the other hands, it requires testing burdensome since WLTC consists of 4 (or 3) phases. To reduce testing burden maintaining representativeness for BEV, a multi cycle test (MCT) method which is based on SAE J1634 was evaluated for its applicability on WLTC.

Validation Tests with Multi Cycle Test Method Test vehicle: Leaf (Nissan) Test plan (1)SCT (Single cycle test) To conduct the range test for each phase. (2)MCT (Multi cycle test) To conduct MCT of WLTC (set driving phase order taking into account of 4 phases) (3) Compare SCT and MCT

Proposed shorten test procedure with MCT based on SAE J1634

Test vehicle Vehicle condition: 2011 Model(ZAA-ZE0) Odometer : 4868 km (before the test) Condition 4WD Chassis dynamometer FF 2WD mode Setting weight (for WLTP gtr condition) 1681kg Ambient temperature ℃ 25

Measured Ranges with SCT At this moment, only M & Ex-H analysis was completed. L&H analysis will be shown soon. Test Results with SCT Phase Range UBE Usable Battery Capacity Eac Middle 170.1 km 19.7 kWh 24.3 kWh Ex-High 98.5 km 19.5 kWh

Measured Discharge Energy with SCT(Middle)

Measured Energy Consumption with MCT Phase Distance km Edc Wh Discharge Energy ECdc Wh/km Energy Consumption Low1 3.10 377 121.6 Middle1 4.75 632 133.2 High1 7.12 986 138.4 Ex-High1 8.25 1652 200.3 Middle2 542 114.0 Low2 335 108.2 CSCM 50.25 7537 150.0 Low3 3.09 108.6 Middle3 4.74 552 116.5 High2 7.11 970 136.4 Ex-High2 8.24 1651 Middle4 539 113.6 Low4 3.08 336 109.1 CSCE 24.26 3495 144.1 Usable Discharge Energy 19.9 kWh Usable Discharge Energy is the summation of Edc.

Calculation equations for ranges with MCT The range with MCT was estimated by the following equations. Energy Consumption Wh/km = k1×EC1+ k2×EC2 + k3×EC3+ k4×EC4 Range km = (Usable Discharge Energy Wh) / (Energy Consumption Wh/km) k1=(Discharge Energy for the first Cycle Wh) / (Usable Discharge Energy Wh) k2= k3= k4 =(1- k1)/3 For middle range; Energy Consumption Wh/km = k1×ECmiddle1+ k2×ECmiddle2 + k3×ECmiddle3+ k4×ECmiddle4 = 115.3 Wh/km Where, k1 = 632 Wh / 19.9 kWh = 0.03 k2 = k3 = k4 = (1- k1)/3 = 0.32 Range km =19.9 kWh/ 115.3 Wh/km = 172.9 km

Derived EV Range from MCT Phase Measured Range (SCT) Estimated Range (MCT) Comparison SCT vs MCT Low Not yet 183.2km To be confirmed Middle 170.1km 172.9km 2.8km 1.7% High 146.1km Ex-High 98.5km 99.5km 1.0km 1.1% It was observed that both range results are identical (few error). We still need to wait for other phase analysis, it has quite high possibility to apply MCT to WLTC Time reduction effect with the shorten test procedure with MCT 　　The measurement of a single range for Middle with SCT consumed 5:40. 　　The measurement of four ranges with MCT consumed 3:30.

Conclusion Japan recommend a SCT method for WLTC EV range test as primary procedure for representativeness. It may have a good chance to apply the MCT method as an option to reduce testing burden.