View Single Post
Old 06-10-2018, 04:43 AM   #10 (permalink)
Crashy
EcoModding Lurker
 
Join Date: May 2018
Location: New Zealand
Posts: 30
Thanks: 14
Thanked 1 Time in 1 Post
Quote:
Originally Posted by oil pan 4 View Post
All the losses in the alt are from hysteresis and drag from the fan
There are MANY other losses:

Bearing friction
Rotor current
Diode losses
Regulator losses
Stator losses (resistive)
Rotor losses (resistive)
Magnetic losses

If the fan is such a big loss, don't spin it. Alternator delete vs disconnect. Obviously NOT a huge loss from the fan or everyone would be deleting instead of just disconnecting. The fan would not be required if the resistive and conversion losses were not so bad.
  Reply With Quote