6 ms·
This is a belt-and-suspenders thing. The gas pedal on an EV isn't connected to a passive rheostat gating the entire power output of the vehicle. It's a low-vo
by hakfoo 1y ago
This is a belt-and-suspenders thing.
The gas pedal on an EV isn't connected to a passive rheostat gating the entire power output of the vehicle.
It's a low-voltage sensor. A capacitor can swallow a transient of a 0.1v signal bursting to 5v for ten milliseconds, and then software converts it into whatever "sport mode acceleration curve" the marketing department calls for.
- cogman10 1y agoAnd I'd argue there's really no reason it couldn't be much more complicated than a rheostat and a static circuit to get the desired curve. I can't find the actual circuitry, but I'd not be surprised if that was what the EV1 did in the 90s. Software adds flexibility, it isn't a necessity.
- hakfoo 1y agoLow-voltage wring and sensors to the pedal are cheaper and lighter and probably less susceptible to some failure modes.