Quote:
Originally Posted by Logic
And an alternator is~10% more efficient at 1600 rpm exactly, if I'm reading the graph in the the linked alternator paper correctly. Do take a look...
If the gearbox and clutch is on the driving (not driven) pulley?
People are reporting 10% with 'alternator delete' due to additionally eliminating belt inefficiency.
(If the belt's missing until you start slowing down and have energy to burn, you have the alternator delete... and free charging.)
(Naturally there are in-between settings and the battery never gets too low)
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I'll take a closer look when I get a moment.
10% gain from an alternator delete depends on the vehicle. If you've got a 100 MPG vehicle, then deleting the alternator can save 10%, but if you're driving a 15 MPG pickup, the alternator load is practically nothing in comparison.
I think I've read on here there are expensive alternators that might cut inefficiency in half.
Alternators should have been eliminated a decade ago though, with hybrid motors serving the dual role of generator. Prius eliminated the accessory belt I think 2 decades ago. The best serpentine system is no serpentine system. The best part serves multiple functions.
My instinctual take is that marginally improving the horse and buggy is solving for the wrong problem.