>MR> One advantage of the electric motor, in addition to its very high
>MR> efficiency (95% & better), is that it develops maximum torque at 0 rpm
>MR> while an IC engine develops maximum torque around 60% of redline. The
>MR> problem is clearly not with electric motor technology.
>
> Excessive torque at 0 rpm isn't necessarily good news. Wheel spin is
> spectacular and noisy and a crowd pleaser, but it is no help to
> vehicle acceleration!
This is kind of interesting. All 'home' conversions of a gas auto to electric
retain the transmission and clutch. It is common practice to shift at least
once, from low to high during normal driving.
The commercial EV's such as those from GM do not use a shiftable
transmission, although some may use a gear reduction box.
Excessive torque causing wheelspin is very easily managed with an EV. It's
already being done with today's computer-controlled cars; they retard the
throttle a bit if the wheels start to break loose. It'd be even easier with
an EV, as the entire drive unit would be computer controlled.
--- FLAME v1.1
---------------
* Origin: Telnet toltbbs.com or call 313-854-6001, Boardwatch #55 (1:234/2)
|