Regenerative braking plays a significant role in reducing PM2.5 emissions from electric vehicles (EVs). Here are the key aspects:
- Mechanism of Regenerative Braking: Regenerative braking in EVs involves the electric motor operating in reverse to capture kinetic energy and convert it into electrical energy, which is stored in the battery. This process significantly reduces the need for mechanical braking, which typically generates PM2.5 emissions through brake wear and tear.
- Reduction in Brake Wear Emissions: Studies have shown that regenerative braking reduces brake wear particulate matter (PM10/PM2.5) emissions. While EVs might emit more nanoparticle matter from brakes and tires due to their heavier weight compared to traditional vehicles, the extensive use of regenerative braking significantly mitigates brake-related emissions compared to petrol or diesel cars.
- Quantitative Impact: Research indicates that regenerative braking can lead to substantial reductions in PM2.5 emissions. For instance, with 50% regenerative braking, emissions can be around 10% lower, and with 100% regenerative braking, they can be about 25% lower compared to petrol cars. Another study found that with 90% regenerative braking intensity, total PM2.5 emissions were reduced by about 23%.
- Overall Emission Profile: While EVs may have higher tire-related emissions due to their weight, the use of regenerative braking generally results in lower overall particulate emissions compared to internal combustion engine vehicles (ICEVs), particularly when considering both brake and tire emissions together.
Overall, regenerative braking is a crucial feature in reducing PM2.5 emissions associated with brake wear in EVs, contributing to a cleaner transportation system.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-role-does-regenerative-braking-play-in-reducing-pm2-5-emissions-from-evs/
