System and method for detecting alternator condition

Details System and method for detecting alternator condition System and method for detecting alternator condition

G - Physics

01

R

G01R 31/00 (2006.01)

Patent

CA 2496970

A system and method for detecting alternator condition is provided. Information is taken from the vehicle powerline and the communication links, and processed by the vehicle ECU, such as the vehicle antilocking brake system ECU, to obtain data. The battery voltage ripple amplitude is then calculated and compared at different engine speeds. If the difference in the ripple amplitude at the different engine speeds is greater than a predetermined threshold value, a signal is sent indicating that the alternator has failed.

La présente invention concerne un système et un procédé de détection de l'état d'un alternateur. Les informations sont reçues de la ligne d'alimentation et des lignes de transmission du véhicule et traitées par l'unité de commande électrique (ECU) du véhicule, telle que l'unité de commande électrique du système de freinage anti-blocage du véhicule, aux fins de l'obtention de données. L'amplitude d'ondulation de la tension de la batterie est ensuite calculée et comparée pour différents régimes du moteur. Si la différence d'amplitude d'ondulation aux régimes différents du moteur est supérieure à une valeur de seuil préétabli, un signal est envoyé pour indiquer que l'alternateur est défaillant.

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