While electric vehicles (EVs) do not emit PM2.5 through exhaust tailpipes, they can still contribute to PM2.5 emissions through non-exhaust sources. The main sources of PM2.5 emissions from EVs include:
- Tyre Wear: EVs are often heavier due to their batteries, potentially leading to increased tyre wear and thus more particulate emissions from tyre dust. However, this impact is generally less than that from conventional internal combustion engine vehicles (ICEVs) when considering overall emissions.
- Brake Wear: Although regenerative braking in EVs reduces brake wear significantly compared to ICEVs, there is still some residual emission from brake dust. However, this is typically less than in ICEVs, especially when regenerative braking is utilized extensively.
- Road Dust: The interaction between tyres and the road surface can generate dust that contributes to PM2.5 emissions. However, the overall emissions from EVs are generally lower than those from ICEVs.
Despite these non-exhaust emissions, EVs contribute significantly less to PM2.5 pollution overall compared to ICEVs, primarily due to the absence of tailpipe emissions.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-are-the-main-sources-of-pm2-5-emissions-from-electric-vehicles/
