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A comment on Electric cars produce far less brake dust pollution than combustion-engine cars. Parent comment

Re:Electric cars produce far less brake dust pollution than ... by roelschroeven on Thursday July 24, 2025 @02:59PM (#44674681)
The post you commented on was talking about Toyota hybrids though, who don't use a CVT in the sense you're talking about.

They use a series-parallel hybrid transmission which is sometimes called eCVT, but works completely different from a classic CVT. There are no pullies, belts, chains, none of that. What they do have is a couple of motor-generators and a differential to link the system up with the engine and the drive shaft. No friction losses like CTVs have.

See https://prius.ecrostech.com/original/PriusFrames.htm, or look up "Hybrid Synergy Drive" on Wikipedia or Youtube or your favorite search engine.

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Re:Electric cars produce far less brake dust pollution than ... by taeric on Thursday July 24, 2025 @03:55PM (#44675285)
Ah, totally fair in that this particular transmission is better than the belt driven CVT stuff. I had thought they were still a bit worse than other transmissions, but it looks like if they are, it is on the order of 1% or so.

Is fascinating to watch these things work.

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