They call it an electric turbocharger

rjstractor wrote:
snip...

There are about a million hybrid cars on the road right now that have all these issues and apparently the car designers pretty much have it figured it out. The motor for an electric supercharger would have a high current draw, but probably nowhere near the 20KW+ of the electric traction motor that hybrids use. I don't see the electric supercharger being used to force feed a big, high performance engine but rather a small, efficient engine in an economy car.

Yup, you are correct...but they don't use capacitor batteries

They use Lithium Ion batteries. Tesla uses thousands of AA's in each
of their vehicles...until their new battery plant gets on line. Then
a custom Li-Ion. Zero Motor cycles uses a custom and one of the best
I've had the opportunity to view specifications on. Both are local
to me and know their staff engineers

Their problem is in the charge and regenerative braking area for both
Li-Ion and capacitor batteries. More so with capacitor batteries

Charge too quickly to shorten the Li-Ion battery life span. The shock
to start the chemical change, charge level and the trickle so important
to longevity

Regenerative braking will have the Li-Ion batteries only take in only
so quickly. That can be mitigated by increasing the numbers of batteries
to increase the capacity, but then the space/weight/etc issues comes
in.

The mechanical (friction material to disc) is a MUST for the current
battery IP. They will always be there as a just in case when they
figure the charge/regen-braking out.


The inrush and draw for any hybrid will depend on the right foot's
rate of change and ultimate stroke of the throttle. Also whether
an AC motor or DC motor. For this turbo think only a DC will do for
now, or until they figure out a lower cost controller/inverter to us
an AC motor

That is the 'worst' case for the designers of this electric turbo

Then the rate of change spec'd out for the boost all the way up to
the max boost. Factored by the ICE's CFM demands at whatever boost
is being discussed. My guess is that it has be VERY quick to full
RPM on that turbo.

Plus by definition of a 'hybrid', there is an ICE involved that is
also contributing to the acceleration of the vehicle that that article
did not mention. That article leads me to believe they are talking
about a pure ICE powered vehicle



Forced induction has a lot of dependencies that must be factored in

What type of ICE

Displacement

Weighting on 'performance'. Raw get up and go power, or MPG higher
importance?



Towing heavy is one of the most demanding and toughest vehicle applications

Many try to compare racing of all kinds as tougher or equal...maybe
in some instances, but most racers of any kind does not have several
tons hooked up with high throttle settings or at WOT for hours/days on end