The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2005
Filed:
Sep. 10, 2002
Marv M. Hamdan, North Olmsted, OH (US);
Gusztav Holler, Elyria, OH (US);
Kenneth A. Grolle, Elyria, OH (US);
Joseph M. Macnamara, Ashland, OH (US);
Kirit A. Thakkar, Parma, OH (US);
Marv M. Hamdan, North Olmsted, OH (US);
Gusztav Holler, Elyria, OH (US);
Kenneth A. Grolle, Elyria, OH (US);
Joseph M. Macnamara, Ashland, OH (US);
Kirit A. Thakkar, Parma, OH (US);
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.