System and method for preventing start pinion/gear ring...

F - Mech Eng,Light,Heat,Weapons – 02 – N

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F02N 11/08 (2006.01) F02N 15/06 (2006.01)

Patent

CA 2418979

The invention provides a cranking inhibition control system for an electric starter (10) to an internal combustion engine (12). Engine rotational speed is developed from the signal produced by a cam shaft position sensor (64), which drives the logic of the system. Responsive to changes in engine rotation speed which result in engine speed falling below idle speed, the control logic (108) generates a temporary cranking inhibit signal. Once engine speed falls low enough to clearly indicate cranking has ceased, a timer (130, 132, 134) is triggered which resets the inhibit signal to permit cranking after a suitable delay.

L'invention concerne un système de commande d'inhibition de démarrage pour un démarreur électrique (10) d'un moteur à combustion interne (12). La vitesse de rotation du moteur est développée à partir du signal produit par un capteur de position (64) de l'arbre à cames, lequel capteur commande la logique du système. Réactive aux variations de vitesse de rotation du moteur entraînant une diminution de la vitesse du moteur en dessous du ralenti, cette logique de commande (108) produit un signal inhibiteur de démarrage temporaire. Lorsque la vitesse du moteur a suffisamment diminué pour indiquer clairement que le démarrage est terminé, une horloge (130, 132, 134), qui réinitialise le signal inhibiteur pour permettre le démarrage après une temporisation appropriée, est déclenchée.

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