Re: [IRCA] OT: car electricals

["Craig Healy" <bubba@xxxxxxxxxxxxxxxxxxxx>]

> Anyway, I have heard talk that cars will be changed over to 42 volts very
> soon.  Does anyone know when or why?

It has to do with accessories and some items being changed from mechanical
to electrical power.  Power steering, brakes and several other subsystems.
It appears that the alternator might be moved to behind the flywheel and
integrated with the starter.  It also makes hybrid operation easier.

Newer vehicles will stop the engine rather than idle.  Things like brakes
and airconditioning need to keep going with the engine off.  And, the
restart of the engine needs to be instantaneous and quiet.

Here's an example of one subsystem:

http://www.delphi.com/manufacturers/auto/other/steering/electric/eps/

When will be subjective, depending on the vehicle.  Much like the changeover
from 6v to 12v which transitioned from the early to mid-50's.

Craig Healy
Providence, RI

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