Knock control using fuzzy logic

Details Knock control using fuzzy logic Knock control using fuzzy logic

F - Mech Eng,Light,Heat,Weapons

02

P

F02P 5/145 (2006.01) F02P 5/152 (2006.01) G05B 13/02 (2006.01)

Patent

CA 2125934

Internal combustion engine ignition timing is adjusted in response to a sensed knock condition and in response to a determination of engine knock propensity through application of fuzzy logic, wherein an inference engine comprised of a predetermined knowledge rulebase generates a set of truths in response to application of a set of input signals from a set of membership functions. The set of truths are combined according to both relative and absolute strength in indicating engine knock propensity.

La présente invention porte sur le réglage de l'allumage d'un moteur à combustion interne, suite à la détection d'un cognement et d'une propension du moteur à cogner, au moyen d'une commande à logique floue dont le moteur d'inférence à base de règles de connaissances prédéterminées génère un ensemble vérifonctionnel suite à l'application de signaux d'entrée provenant d'un ensemble de fonctions d'appartenance. L'ensemble vérifonctionnel s'applique en fonction de la capacité différentielle et de la capacité absolue du système à indiquer une propension au cognement.

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