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Regenerative braking would tend to reduce particulates from friction braking.
by dmckeon 1y ago
Regenerative braking would tend to reduce particulates from friction braking.
- Swizec 1y agoMost European cars already have engine braking. EV regenerative braking just maintains the behavior that folks only used to automatics forgot about. Automatics I think are still not super common in Europe.
- trollbridge 1y agoBut spews forth more rubber (and plastic, since that's what tyres are made from these days), which is an ongoing problem for Tesla EVs when owners discover their tyres don't last nearly as long because they're transmitting power both when starting and stopping, not just when starting.
- lotsofpulp 1y agoI don’t understand this concept. I would expect an ICE and an EV vehicle with the same weight, speed, deceleration, tires, etc to have the same wear on tires. The difference being the energy to stop an ICE being transferred to the brake pads and rotors, rather than recharging the EV’s battery. What am I missing? Why wouldn’t the tires experience the same forces in both scenarios?
- trollbridge 1y agoIt's due to the regenerative braking, which transmits more power via the wheels when decelerating. Most ICE cards don't have regenerative braking; hybrids tend to.
- lotsofpulp 1y agoIf the stopping distance is the same (same accel/decel), I don’t understand this statement > because they're transmitting power both when starting and stopping, not just when starting. bri3d’s adjacent post is what my thoughts would be on why EV’s consume more tires.
- bri3d 1y agoThis doesn't make sense. Energy in the system is conserved. On an ICE car, brakes convert the energy to heat. On an EV, motors convert the energy to electricity. The tires experience the same net force. EVs wear tires more quickly, in general, because they are very heavy and produce more torque (and drivers are more likely to request that torque, also).
- flomo 1y agoI'd guess an ICE transmission provides some deceleration too. But right on, apples-to-apples you would need to compare a Tesla to a Mercedes or etc and not a Corolla. They are sold as a luxury/performance car.
- chowells 1y agoBut the brakes experience less work, and so there is less combined brake and tire dust for distance traveled.
- deleted 1y ago[deleted]
- vel0city 1y agoFundamental misunderstanding of physics. Slowing 2,500lbs from 60-0MPH in 4 seconds (for example) puts just as much wear on a tire if it's with friction brakes or with regenerative braking or engine braking.
- detaro 1y ago> because they're transmitting power both when starting and stopping, not just when starting. For the tires it doesn't matter if the energy from stopping is transferred into brakes or back into a motor though?
- deleted 1y ago[deleted]
- FredPret 1y agoIt’s because they weigh more
- thehappypm 1y ago“They weigh more” is something I kinda have a problem with. People act like EVs are these behemoths, but your typical EV is hardly an outlier. The Tesla Model 3, for example, weighs as much as a Honda CRV. Yes, that’s a different car class; but nobody looks at a CRV and complains about its weight and the environmental impact of that weight on air quality nearly the same way.
- lotsofpulp 1y agoPeople who care about the externalities of unnecessarily large and heavy vehicles do complain about compact utility vehicles, aka “I want to sit higher up”. A model Y would be the comparison to a CRV (model Y is 400 pounds / 10% heavier).
- thehappypm 1y agoI mean, I totally get the criticisms that you see of people having unnecessarily large SUVs, like really who needs an Escalade. But a CRV? Like a Model Y with one passenger weighs the same as a CRV with 3.
- AnthonyMouse 1y agoYou don't even have to go to a different class. A Model 3 weighs about as much as a BMW 3 series and both weigh slightly less than the average new car.
- rangestransform 1y agoThis is as much of a criticism of bmw as a compliment to Tesla, the new M5 weighs more than a similarly fast lucid air
- 1y ago