2014 Ultimate 1 Ton Challenge results

chevor wrote:

4x4ord wrote:

AH64ID wrote:

4x4ord wrote:

Cummins12V98 wrote:

AH64ID wrote:

Cummins12V98 wrote:

4x4ord wrote:

Cummins12V98 wrote:
Would have been interesting to see what would have happened if they could have turned off the torque management.

What do you mean by "torque maagement"?

RAM does not allow full power in the low gears until you are moving along.

None of the engines are allowed to make full power in lower gears.

There isn't a drive-train that would fit and hold full torque off the line, and not cost what a full drag trans costs.

I know the RAM reduces it a lot. I can really feel when it comes on.

Interesting to know how much on each brand. Anyone know?

Where does this idea come from that "none of the engines are allowed to make full power in the lower gears"? does the computer limit fuel until it shifts into 3rd? I have heard people throw this "torque management" term around but have doubts that it refers to limiting torque in lower gears. I think the computer backs off fuel during shifting to avoid slipping the transmission clutches and wonder if this might be what "torque management" refers to?

Torque Management does refer to low gear fueling, there is less total power available in lower gears. Most people never notice it because the gearing reduction makes up for the lower power output, and the trucks still accelerate quickly with a load.

What you are thinking of is called shift defuel and a different ECM control than torque management.

Torque management has been around since the late 90's and occurs in all 3 makes and both manual and automatic transmissions.

EFI live actually has tables you can see that show the max torque available at a certain rpm.

Vehicle engineers have also verified this.

The driveline simply cannot handle full torque with the gear reduction of low gears.

The drive line can handle tremendous torque and could very likely handle the 3000 or so lbft that comes out the back of the transmission under full fueling. I pull heavy trailers in very soft ground at times and have needed to shift the transfer case into 4 low where the torque is multiplied by 2.72. If the driveline can't handle full fuel in high range just think how severely the fuel must be limited in low range.

I think it need to quoted a few more times.