Tailpipe emissions are usually the main focus of regulators, however the subsequent spherical of European Union emissions requirements will deal with air pollution from one other supply—one that’s notably related to EVs.
Scheduled to be unveiled in July, the upcoming Euro 7 requirements will nonetheless require automakers to cut back tailpipe emissions corresponding to nitrogen oxide. However they can even set limits on brake mud, based on Euractiv.
2022 Renault Megane E-Tech Electrical
Sure, EVs do not use their friction brakes as a lot as inner combustion vehicles. That is because of regenerative braking. However as a current examine concludes, that is not sufficient to offset the upper weight of EV battery packs.
The European Fee (the EU’s governing physique) introduced its intention to control brake mud in a 2021 coverage plan, saying it will tackle particulate emissions “from each typical and electrical automobiles alike.”
A current (and controversial) examine instructed that EVs additionally present a lift in tire-related particulate emissions—once more brought on by the added weight of battery packs. However these emissions aren’t a goal for EU regulators proper now.
DS E Tense Efficiency prototype
It isn’t clear how automakers will cut back brake mud. A current idea from Stellantis’ DS Cars, drawing from System E expertise, instructed how EVs of the longer term may omit friction pads completely.
Aggressive regenerative braking permits drivers of at this time’s EVs to make use of their friction brakes much less—producing much less mud and permitting brake pads to last more.
Not each automaker agrees on the value of one-pedal driving modes, although. Porsche purposely averted one-pedal driving on the Taycan, claiming its automated regeneration technique—and extra coasting—could be extra environment friendly total.