4 ms·
Munro took apart a Nissan Ariya which has this exact kind of motor. The maintenance is basically removing a tiny cover and replacing the tiny and cheap carbon b
by torginus 4mo ago
Munro took apart a Nissan Ariya which has this exact kind of motor. The maintenance is basically removing a tiny cover and replacing the tiny and cheap carbon brushes every 100k km or more. It's basically cabin filter level maintenance.
And they said that PMSM motors are more efficient at low RPM, but their coils get saturated at higher RPMs meaning they lose efficiency at highway speeds (which actually affect the range number people car about).
So overall not such a bad tradeoff, if it makes cars less expensive.
- runeks 4mo ago> [...] but their coils get saturated at higher RPMs meaning they lose efficiency at highway speeds (which actually affect the range number people car about). This seems like a big disadvantage. Highway is exactly where EVs fare worst compared to ICE cars. I wonder if this could be solved by introducing a gearbox? I know the new Mercedes CLA (EV) has two gears, the second gear being optimized for highway speeds. But I don't know whether it's related to this.
- superxpro12 4mo agoim surprised they make it so simple considering all these EV's are operating at lethal voltage levels. I would hope there's some kind of interlock that prevents service.
- mech998877 4mo agoMaybe they've got a big ol warning sticker. or maybe not. Automative maintenance is generally dangerous anyway.
- deleted 4mo ago[deleted]