Systems and methods for determining engine torque values

Details Systems and methods for determining engine torque values Systems and methods for determining engine torque values

2008-12-17

2010-11-30

Nghiem, Michael P (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

Reexamination Certificate

active

07844404

ABSTRACT:
A system and method of estimating the torque value of an engine are provided. The method includes generating corrected variable values from engine measured parameters and using a plurality of steady state tables that output corrected engine torque estimates based on various corrected variable values as inputs. In a preferred embodiment, the method also includes a phase compensation technique that converts each steady state table torque estimate into a dynamic torque estimate that closely matches the torque sensor measurements during both transient and steady state engine operations. In addition, also in a preferred embodiment, the method further includes a weighted averaging scheme that combines multiple torque estimates with weighting factors that are optimized based on the accuracy attributes of each torque estimate.

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