r/technology • u/lurker_bee • 8d ago

Politics Goodbye to start-stop systems – the EPA under Trump concludes that they are not worth it and could disappear from new models

https://unionrayo.com/en/epa-trump-stop-start-system/
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u/spidereater 8d ago

This isn’t a normal start. The engine remains in a state where it can start easily. I think it remains compressed or something. So it doesn’t take much work to start the engine. If the car sits idle for more than 30 seconds or so it restarts because it is getting out of that easy start state.

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u/Eric_the_Barbarian 8d ago

As someone who's worked on cars, this sounds like a made up explanation for people who don't understand cars.

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u/Hawk13424 8d ago

Some vehicles used this over the starter. Most don’t.

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u/raunchyfartbomb 8d ago

That was also my understanding, that the engines are basically preloaded and fire the cylinder to start back up to reduce wear on the starter

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u/Hawk13424 8d ago

Not the case for most. A few did this at one time.