On Wed, 6 Dec 2017 18:51:31 -0500 Dan Penoff via Mercedes <mercedes@okiebenz.com> wrote:
> So help me understand the concept: > > As I understand it, the clutched pulley has a one-way sprag clutch in > it so that if the belt turns backwards it can freewheel? No, the belt does not turn backwards, it only slows down. An upgraded alternator with a higher moment of inertia, which doesn't want to slow down, can continue rotating at the same speed until the engine (and thus the serpentine belt) can catch up. > As the pulses that are induced into the accessory drives from the crank > pulley (as the crank slows down and speeds up with the piston movement) > occur, the pulley essentially dampens them by letting the pulley > freewheel when the crank slows down. > > Is this right? Yes, but I would word it as, As the pulses that are induced into the accessory drives from the crank pulley (as the crank slows down and speeds up with the piston movement) occur, the pulley essentially allows them to happen by letting the alternator (or maybe power steering pump, whatever) freewheel when the crank slows down. Craig _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
