Torque Management is used to reduce the amount of torque produced by the engine. It does this by retarding the ignition timing, applying engine cuts, reducing boost levels (if using Closed Loop Boost Control) and closing the E-Throttle to reduce engine torque to the requested level.
Torque reduction is requested via the Traction Control function or over CAN (CAN gearshift requests etc).
Torque Management estimates current engine torque using the load (Abs) value, a multiplier and a base (idle) load value.
When Gear Shift Reduction mode is turned on Torque Management estimates driver requested Torque using the Torque Request Table, this is typically Accelerator position and engine speed based.
Traction Control uses Torque management to reduce engine torque to reduce slip, Traction Control does this by altering the Modified Torque Request runtime value.
When a reduced torque is requested Torque Management starts by retarding the ignition until the Trq. Red. Max Ignition Trim is reached and then starts applying cuts until the desired torque is reached. Boost target trims are also applied immediately with the target boost being reduced until the wastegate duty cycle reaches its minimum value. Once the minimum boost has been reached the E-Throttle target position starts being reduced.
This process stops once the desired torque has been reached and all cuts and ignition trims have been removed so the system is keeping the torque reduced with only throttle position trim and boost target trim. The ordering of these 4 methods of Torque reduction is setup to provide a fast initial reduction in torque and a smoother torque reduction during extended periods.
You don't need E-Throttle and Boost Control on your vehicle to use Torque Management but it will mean that ignition retard and cuts will remain applied during the torque reduction.
Torque Management Settings
Used to turn Torque Management ON and OFF.
Disabled mode turns torque management off but leaves tables allocated.
Set this value to the Load (abs) runtime value that the engine has when idling.
Adjust this value until the Estimated Torque runtime value matches the reported dyno torque while under load conditions.
The maximum amount of ignition timing that will be removed. Once this max is reached the cuts start being applied.
The type of cut applied when using cuts to reduce engine torque. Fuel, Ignition or no cuts can be selected.
The rate at which the boost target is reduced until the torque request is met or the minimum wastegate duty cycle is reached. This is only used if Boost Control is set to Closed Loop mode.
The rate at which the boost target is increased until it is back at the standard boost target (no Torque management influence remaining).
The allowable torque variation from the torque reduction target before E-Throttle moves again to correct.
The rate at which the E-Throttle target is reduced until the torque request is met or it is fully shut.
The rate at which the E-Throttle target is increased until it is back at the standard E-Throttle target (no Torque management influence remaining).
Enables CAN based torque reduction requests, when turned on the Torque Request Table is allocated. This table allows you to specify how much torque the engine would be making throughout the engine's operating range so that when a torque reduction value is received it is possible to calculate when that amount of torque reduction has been achieved.
Torque output = Torque Request table value - Torque Reduction request value.
When this table is setup it is important to ensure the engine is in steady state when the torque value is captured.
This table is used to estimate the torque being requested by the driver, typically using accelerator position and engine speed.