Join Date: Nov 2016
Location: Heiloo, the Netherlands
The models I used assume a linear dependency of range on temperature, and a dependency of range on speed that is a combination of linear and quadratic. For the latter part of the model, for higher speeds, such as 110 km/h, the quadratic part dominates by a factor 4 to 5 over the linear part, for lower speeds such as 50 km/h this factor is 1.5 to 2.
As our available population of cases shows a lot of variation, the model naturally deviates from these individual cases. For example, in some of the high temperature cases concerning the Jeju Island rally they have selected a very good hypermiler as driver, whereas in Bjorn Nyland's Winter Tests he did not try to drive in an economic way, and sometimes used the sporty mode, and besides, he had to fight very bad weather conditions in the second part of his trip.
Due to this variation over the different cases, the average deviation between model outcomes and reported data over all cases is about 20 km. Most of this average is determined by the most extreme cases. If two or three most extreme cases are left out (by considering them as socalled outliers), the average deviation between model outcomes and reported data becomes about 10 km, which seems not too bad.
2016 Hyundai Ioniq Electric Comfort Marina Blue
Previous car: 2013 Prius Plug In