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Not only does regenerative braking itself reduce PM emissions, the reduced demand on friction brakes is enabling some EVs, such as the Volkswagen ID3 and ID4, t
by Reason077 3y ago
Not only does regenerative braking itself reduce PM emissions, the reduced demand on friction brakes is enabling some EVs, such as the Volkswagen ID3 and ID4, to switch to drum brakes.
Due to their enclosed nature, drum brakes greatly reduce PM emissions compared to disc brakes.
- sokoloff 3y agoThat seems like the ID.4 has drum brakes on the rear only and disc brakes on the front (which is not unique to it; some lower end gasoline cars still have rear drums as well).
- lm28469 3y agoYeah it's juste because it's cheaper, twingos also have drum breaks for the rear, as well as smarts and probably a boatload of other vehicles
- deleted 3y ago[deleted]
- AtlasBarfed 3y agoAnd the brakes are only employed if needed. So even if you had disc brakes and has a good Regen design, you'd only use them in aggressive /emergency situations. The other benefit of EVs is that the feedback on regeneration and efficiency tends to make you less aggressive and a better driver. Which also leads to less brake use.
- Reason077 3y agoYes, although worth remembering that many EVs are rear-wheel drive only. An all-wheel drive or front-wheel drive EV can regen more effectively than one which can regen on the rear wheels only.
- Tagbert 3y agoI understand the theory of that but wonder how much difference there actually is.