Internal combustion engine performance calibration systems

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant

Reexamination Certificate

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Details

C701S101000, C701S111000, C073S117020

Reexamination Certificate

active

07047125

ABSTRACT:
A system is provided for estimating an operational parameter of a first engine, the first engine including a rotatable crankshaft. The system includes a model for estimating the operational parameter of the first engine as a function of instantaneous crankshaft speed at a plurality of angular positions of the crankshaft of the first engine. The model is developed, at least partially, based upon operational data from a second engine having a rotatable crankshaft. A sensor is operable to determine values representative of the instantaneous crankshaft speed of the first engine, at a plurality of angular positions of the crankshaft of the first engine. A modifier is operable to modify at least some of the representative values to, at least partially, calibrate out differences between the first and second engines that may cause variations in instantaneous crankshaft speed. The modified values are input to the model.

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