| 摘要 |
A method of extracting useful information for control of an internal-combustion engine, based on graphic signatures is disclosed. A signal carrying at least information relative to engine operation is acquired. This signal is then converted, for each engine cycle, to a graphic signature translating a set of characteristic features of the signal in a form of a graph which is simple to analyze. At least one attribute of this signature is then determined, from which the pertinent information is estimated by a predetermined relation between the attribute and the information. Finally, the information is used to control the engine
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