CAGE User's Guide

Performing the Tradeoff Calibration

You now fill the lookup table for spark angle by trading off gain in torque for reduction in NOx emissions.

The method that you use to fill the lookup table is

• Obtain the maximum possible torque.
• Restrict NOx to below 250 g/hr at any operating point.

To perform the tradeoff calibration, follow the instructions in the next four sections:

1. Calibrate the normalizers.
2. Set values for the other variables.
3. Fill key operating points with values for spark angle.
4. Fill the table by extrapolation.

Once you have completed the calibration, you can export the calibration for use in the electronic control unit.

Displaying the Models

Calibrating the Normalizers