Sunday, Jul 22, 2018 at 00:17
RMD - The device fitted to the vehicles that have "smart alternators" is called an IBS - Intelligent Battery Sensor.
At the IBS's heart is a shunt, and along with the shunt, is a range of integrated electronics.
These electronics measure a range of battery parameters - current flow, voltage and battery temperature, being the primary measurements.
The integrated electronics utilise a LIN bus communication protocol to send the battery information to the vehicles ECU.
Here's the full write-up on the IBS's currently being utilised (pun intended).
Your head will hurt, after you've read right through the article - if you bother to glance at it.
IBS design
The other information you ask about the pulleys, is provided in the Gates site, I thought.
However, possibly a better explanation is provided in this (U.S.) NAPA technical advice article.
Sorry about just providing more links - but the article saves me some tedious typing, just repeating what is already
well-written, elsewhere.
NAPA - Alternator Clutch Pulley designs
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