- Jan 17, 2016
- Reaction score
- Ram Year
- 14 Sport
Show me a one way clutch pulley for the stock Ram 4th Gen alternator?They're kinda two different things - nearly all modern cars and trucks are PWM at the alternator and all accessory voltage regulators so they're making a decision to kill the field wire 150,000 times per second.
Alternator clutch pulleys and damper pulleys are a one way clutch, or a one way clutch plus torsion spring that allow the alternator to freewheel if they happen to be going faster than the engine (good to let them spin down on auto start/stop vehicles) and also damp their movement a little similar to a harmonic damper on a crankshaft which supposedly extends the life of the drive belt by reducing constant shock loads on them and extends the life of idler pulley bearings & tensioners, and slightly reduces NVH.
I don't know if any of that can also save energy, probably not enough to add up to the $100+ a hypothetical kit would cost... not in a hundred years of driving. I'm sure the #1 reason so many cars have them now is just for quicker/smoother auto stop/start and any other benefits are just freebies.
If i'm reading his post right,he's looking for something to freewheel the alternator under low use situations,which would entail something with an electrical magnetic clutch,or some way to decouple the pulley from the alternators armature shaft,not a 1 way clutch