Re:Former Tesla employee claims he is a whistleblower
by PeterisP on Thursday June 21, 2018 @11:20AM
(#17365940)
What frigging computer controlled transmission? Electric vehicles like Tesla Model S have a single-speed fixed transmission, it's pretty much two gears stuck together with no control needed or even possible.
Re:Former Tesla employee claims he is a whistleblower
by mikestew on Thursday June 21, 2018 @12:53PM
(#17366878)
in order for electric vehicles to be efficient they need a special transmission
Electric cars don't have transmissions. At least the Leaf and Teslas don't, that I can say with certainty.
Re:Former Tesla employee claims he is a whistleblower
by notlob on Thursday June 21, 2018 @11:00PM
(#17370952)
Both of your examples have transmissions, they are however a single gearing ratio (“reduction gear”). EV conversions also frequently use a multi-gear transmission, as did the original Tesla Roadster IIRC.
Re:Former Tesla employee claims he is a whistleblower
by mikestew on Friday June 22, 2018 @11:28AM
(#17374702)
Figured someone would be along shortly to point this out. Here ya go: "electric cars do not have the multi-ratio selectable transmissions that are in ICE cars." I seriously doubt anyone was confused by my succinct version, though.
The reason computer controlled is used is because in order for electric vehicles to be efficient they need a special transmission, nobody has designed a fully mechanical transmission that compares to computer controlled (not least of all because mechanical transmissions are reactive, not proactive, meaning you're always less efficient than you could be, because that very inefficiency is what drives the transmission to shift).
You'd also lose regenerative braking which is a major "win" for electric vehicles.