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:
Sep. 17, 2007
Filed:
Jun. 09, 2002
David Lawrence Hasfjord, Dearborn, MI (US);
Richard M. Avery, Jr., West Bloomfield, MI (US);
Dennis Michael Letang, Canton, MI (US);
James A. Gray, Canton, MI (US);
Donald M. Mcdonald, Howell, MI (US);
Marleen F. Thompson, Sterling Heights, MI (US);
Ian Daniel Mckenzie, Canton, MI (US);
John Edward Longnecker, Livonia, MI (US);
David Lawrence Hasfjord, Dearborn, MI (US);
Richard M. Avery, Jr., West Bloomfield, MI (US);
Dennis Michael Letang, Canton, MI (US);
James A. Gray, Canton, MI (US);
Donald M. McDonald, Howell, MI (US);
Marleen F. Thompson, Sterling Heights, MI (US);
Ian Daniel McKenzie, Canton, MI (US);
John Edward Longnecker, Livonia, MI (US);
Detroit Diesel Corporation, Detroit, MI (US);
Abstract
A real-time maintenance alert system and method for use in a heavy-duty truck having an engine controller with memory are provided. The system includes a sensor operative to indicate an engine condition from the group consisting of: oil filter restriction, air filter restriction, fuel filter restriction, oil level, and coolant reserve tank fluid level. Control logic at the engine controller processes the sensor signal to determine a real-time fault condition, when appropriate.