electric boost

[Alex C. Peper]

Use only for a few secs. during accell.  then charge when cruising,
regenerative braking. ultra capcitors and or thermoelectric.
Alex
> 
> We've all (or many of us) heard/read about the "electric superchargers"
> that have been marketed recently, these are devices which connect to the
> intake and blow in air - but they are electric powered.  They typically
> run for short bursts of time to provide just a little extra grunt when
> needed, and usually on naturally aspirated engines, especially diesels.
> 
> Well, has anyone thought of doing this *right*?  Install additional
> alternator capacity to support running the unit consistently.  Put in an
> intercooler, etc. to support higher boost levels, like a real turbo.
> 
> Such a system has the following advantages:
> 
> 1) More fuel efficient than a supercharger
> 
> 2) Very little turbo lag
> 
> 3) Very precise and simple control of boost (electronic control system can
> directly vary impeller speed to control boost)
> 3.5) Knock sensor system can now reduce boost as a way of preventing
> detonation!  Oh happy day.
> 
> 4) No parasitic drag when not in operation; relatively little even under
> boost
> 
> 5) Can build boost on the line even with manual transmission, for drag
> racing, or at low RPM, for road courses/autocross
> 
> 6) Easy to install.  No need to fuss with the exhaust.
> 
> I can think of the following disadvantages:
> 
> 1) Current electric superchargers may not have sufficient duty cycle
> and/or airflow.
> 
> 2) Alternator drag/battery drain may be more than I expect.
> 
> 3) No kits available for this.  Do it all yourself.  Need an ECU that can
> understand what's going on.
> 
> 4) No one else is doing it, so there must be some obvious problem that I
> haven't thought of.
> 
>
Alex C Peper
http://www.obd-2.com