Torque wars continue in the diesels

ShinerBock wrote:

4x4ord wrote:
I am not certain but I think you guys haven't got a clue what you're talking about as far as how torque management works. When I put my truck in 4 low with a 30,000 lb trailer hooked up and sunk in the mud the amount of torque going to the rear wheels is huge. .. The driveline has to be able to handle full engine torque in 2nd gear while the tranfer case is in high range. My limited understanding of torque management is that the computer backs off fuel delivery during shifts in order to limit high torque on the clutches before they have a chance to fully engage.

That is due to gear torque multiplication in the transfer case which is after the transmission. The amount of torque going in and being multiplied out of the transmission is still the same whether you are in 2 high or 4 low. In the case of your truck, 4 low multiplies the torque coming out of your transmission by 2.72 and then additional amount depending on your front/rear gear ratio.

Additionally the torque converter has a wide open throttle torque ratio of 1.9:1. The 2.72:1 was the transfer case ratio in the old body style; the new trucks have a transfer case with a low range ratio of 2.64:1. Regardless, it is obvious that the driveshaft and axle can take high torque and even more obvious is the fact that the input shaft of the transmission and the torque converter can handle full engine torque.........so isn't it likely that "torque management" refers to cutting fuel during shift points to protect the clutches in the transmission?