New European Driving Cycle (NEDC)
The New European Driving Cycle is a driving cycle consisting of four repeated ECE-15 driving cycles and an Extra-Urban driving cycle ( EUDC ). The NEDC is supposed to represent the typical usage of a car in Europe , and is used, among other things, to assess the emission levels of car engines. It is also referred to as MVEG cycle (Motor Vehicle Emissions Group). Effective year 2000, that idling period has been eliminated, i.e., engine starts at 0 seconds and the emission sampling begins at the same time. This modified cold-start procedure is also referred to as the New European Driving Cycle or NEDC.

The New European Driving Cycle NEDC drive cycle is as shown in Figure 10 .

The driving cycle parameters for New European Driving Cycle NEDC are as shown in Table 6.

Table 6: Parameters of NEDC

From the Table 6 the following conclusions can be drawn:

• The maximum power required to move the vehicle on this drive cycle is about 115 kW, hence, the prime mover (combination of ICE and EM in case of HEVs and EM in case of EVs) should be able to deliver the required power.
• The maximum braking power is about 101 kW and a fraction this power can be recovered by using regenerative braking.
• At low speeds (upto 10m/s) the power can be supplied by EM only and between 10m/s and 20m/s the tractive power can be supplied from the combination of EM and ICE.
• Moreover, from Figure 10 it can be seen that the vehicle is subjected to high acceleration from 800 sec onwards. During these periods, the power required to accelerate the vehicle can be obtained, in case of HEVs, from the combination of ICE and EM.
• For when the vehicle cruises at speeds 15m/s, the tractive power can be delivered only by the ICE.

References:

[1] L. Guzella, A. Sciarretta, Vehicle Propulsion Systems , Springer, 2007