| 摘要 |
PROBLEM TO BE SOLVED: To provide a system and a method for calibrating a model concerning the operation of an internal combustion engine. SOLUTION: This invention provides the system for estimating an operational parameter of a first engine including a rotatable crankshaft. The system includes a model for estimating the operational parameter of the first engine as a function of the instantaneous crankshaft speed in a plurality of angular positions of the crankshaft of the first engine. The model is developed at least partially based upon an operational parameter from a second engine including a rotatable crankshaft. A sensor is operable to determine values representive of the instantaneous crankshaft speed of the first engine at two or more 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. COPYRIGHT: (C)2006,JPO&NCIPI
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