Quote:
Originally Posted by Dean
OK, input = planetary, but it doesn't matter all shafts are rotating in the same direction at almost identical speeds.
axis = shaft(input or output)
It does work the way I am describing, the speed differentials are tiny compared to what a normal clutch sees, so wear is minimal.
There is no heating the clutch at 100%, it is locked!
The other side of the clutch that the gears are "being pressed into" is on the the input shaft, not empty space, but again, it doesn't matter which shafts the clutch is generating friction between as long as it is between shafts, not into space. The friction between shafts shifts the bias towards lock up which is 50/50 theoretical distribution.
Yes, while it is slipping, it is generating some heat, and power loss, but if it was really the percentages you are talking about, then you would definitely burn it up in no time, and you would need an oil cooler on your DCCD the size of a radiator.
|
At 100%, the clutch is not "locked". The clutch only engages if there is a speed differential between front and rear wheels. At 100%, the clutch engages if there is *any* speed differential. At lesser values, the clutch does not engage until the speed differential is more significant, at 0% the clutch never engages. What this means is that the clutch *never* engages without slipping, and as the output shaft speeds start to match each other, the clutch disengages.
The "percentages [you're implying] I'm talking about" never occur because you never have a long period of time where the output shafts are at drastically different speeds.
Whereas, in your scenario, you've basically got some electric servo that slaps the clutch up against all three shafts attempting to "weld" them together, which is exactly like the clutch on the engine attempting to "weld" the flywheel of the motor to the input shaft of the transmission. So, in your setup, anytime the car is moving and >0% lock dialed in, you've got the clutch attempting to engage.