Objective Determination Of Minimum Engine Mapping Requirements For Optimal SI DIVCP Engine Calibration
1. Objective Determination of Minimum
Engine M
E i Mapping Requirements for
i R i t f
Optimal SI DIVCP Engine Calibration
Pete Maloney
The MathWorks, Inc.
,
4. Results Summary
Torque Residuals as a function of DoE Size
3
2
1
0
duals (Nm)
-1
Torque Resid
-2 Median
M di
Max
Min
-3
-4
-5
-6
-7
50 100 150 200 250 300 350 400 450
Number of DoE Points
•Approximately 100 Spark-Sweeps Required to Optimally Calibrate This
Type of Engine With a Workload Feasible 2 Stage Modeling Approach
Workload-Feasible 2-Stage
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9. Problem-Solving Approach
Optimal Calibrations From 52 Pt. Survey DoE
p y
Optimal Calibrations From Final Augmentation: 406 Pt. DoE 5
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10. Problem-Solving Approach
Exhaustive Calibration Development DoE
100 Cam-Phaser
Combinations at Each
of 100 Calibration Table
Breakpoints in Speed/Load
(10,000
(10 000 Spark Sweeps)
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11. Problem-Solving Approach
Optimal Calibrations From Exhaustive DoE
p
Optimal Calibrations From Final Augmentation: 406 Pt. DoE 5
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13. Conclusions And Next Steps
•~100 Spark Sweeps Required For DIVCP Calibration
•VCP Calibration Shapes Can Vary But Yield Similar Results
•VCP Calibration Shapes Sensitive to Modeling Process
•Sparser Version of Exhaustive Process Should Be Tried
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