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:
Dec. 15, 2009
Filed:
Dec. 17, 2007
Donald E. Keski-hynnila, Canton, MI (US);
Jeffery S. Hawkins, Farmington Hills, MI (US);
Harald Wedler, Neuhausen, DE;
Reinhard Pfundt, Ansbach, DE;
Frank S. Groer, West Bloomfield, MI (US);
Mark A. Zurawski, Northville, MI (US);
Dennis J. Grace, West Bloomfield, MI (US);
Heather A. Staley, Garden City, MI (US);
Jimmie L. Priest, Jr., Ypsilanti, MI (US);
Min Sun, Troy, MI (US);
Jason T. Barton, Canton, MI (US);
Zhiping Han, La Salle, CA;
Martin Fritz, Rudersberg, DE;
Donald E. Keski-Hynnila, Canton, MI (US);
Jeffery S. Hawkins, Farmington Hills, MI (US);
Harald Wedler, Neuhausen, DE;
Reinhard Pfundt, Ansbach, DE;
Frank S. Groer, West Bloomfield, MI (US);
Mark A. Zurawski, Northville, MI (US);
Dennis J. Grace, West Bloomfield, MI (US);
Heather A. Staley, Garden City, MI (US);
Jimmie L. Priest, Jr., Ypsilanti, MI (US);
Min Sun, Troy, MI (US);
Jason T. Barton, Canton, MI (US);
Zhiping Han, La Salle, CA;
Martin Fritz, Rudersberg, DE;
Detroit Diesel Corporation, Detroit, MI (US);
Abstract
In one aspect, the present invention is directed to a method for operating an electronically controlled internal combustion engine in a vehicle to perform at least one rationality check on at least one sensor to detect impending sensor failure and verify component functionality. The engine is equipped with an engine control system (ECS) having a memory and in electronic communication with various sensors. The sensors transmit data signals to the ECS indicative of associated engine and vehicle component functionality. The method comprises determining a measured operating condition of a first component from sensor data signals indicative of first component functionality, determining a measured operating condition of a second component from sensor data signals indicative of second component functionality, comparing the measured condition of the first component to the measured operating condition of the second component to determine whether sensor readings from the first component are indicative of a component operating within a normal range but indicative of impending sensor or component failure, logging an indication of an impending sensor or component failure as a fault in MPU memory if it occurs for a predetermined period of time and for more than a predetermined number of times and drive cycles, and activating a warning alert to an operator and initiating remedial actions responsive to the indication of impending component or sensor failure. The data logged includes time of fault, type of fault, number of occurrences of the fault, number of drive cycles where the fault occurred and distance traveled with the fault logged.