Is a
Patent attributes
Patent Applicant
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1Current Assignee
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1Patent Jurisdiction
Patent Number
Patent Inventor Names
Gusztav Holler1
Joseph M. Macnamara1
Kenneth A. Grolle1
Kirit A. Thakkar1
Marv M. Hamdan1
Date of Patent
March 1, 2005
1Patent Application Number
102385431
Date Filed
September 10, 2002
1Patent Citations Received
Patent Primary Examiner
Patent abstract
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.
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