EVs emit more brake dust, which the EU is stepping up to regulate

Tailpipe emissions are usually the main target of regulators, however the subsequent spherical of European Union emissions requirements will sort out air pollution from one other supply—one that’s significantly related to EVs.

Scheduled to be unveiled in July, the upcoming Euro 7 requirements will nonetheless require automakers to cut back tailpipe emissions reminiscent of nitrogen oxide. However they may also set limits on brake mud, in accordance with Euractiv.

2022 Renault Megane E-Tech Electrical

Sure, EVs do not use their friction brakes as a lot as inside combustion vehicles. That is because of regenerative braking. However as a latest research 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 might deal with particulate emissions “from each typical and electrical automobiles alike.”

A latest (and controversial) research recommended that EVs additionally present a lift in tire-related particulate emissions—once more attributable to the added weight of battery packs. However these emissions aren’t a goal for EU regulators proper now.

DS E Tense Performance prototype

DS E Tense Efficiency prototype

It is not clear how automakers will cut back brake mud. A latest idea from Stellantis’ DS Cars, drawing from Components E expertise, recommended how EVs of the long run may omit friction pads solely.

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—so whereas we’re additionally skeptical in regards to the above research’s conclusions on non-exhaust emissions, we should always merely emphasize that extra research must be executed in real-world circumstances.

Not each automaker agrees on the value of one-pedal driving modes, both. Porsche purposely averted one-pedal driving on the Taycan, claiming its automated regeneration technique—and extra coasting—could be extra environment friendly general.

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