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. 22, 2009
Filed:
Mar. 27, 2007
Marvin Lynch, Detroit, MI (US);
Ningsheng Qiao, Troy, MI (US);
Jack Szpytman, Dearborn, MI (US);
Louis Liu, Bloomfield Hills, MI (US);
Richard Gilbert, Livonia, MI (US);
Alan Chewter, Ypsilanti, MI (US);
Marvin Lynch, Detroit, MI (US);
Ningsheng Qiao, Troy, MI (US);
Jack Szpytman, Dearborn, MI (US);
Louis Liu, Bloomfield Hills, MI (US);
Richard Gilbert, Livonia, MI (US);
Alan Chewter, Ypsilanti, MI (US);
Temic Automotive of North America, Inc., Deer Park, IL (US);
Abstract
A method for determining a misfire condition includes receiving crankshaft acceleration data. The method further includes routing the received data through at least one of a plurality of processing paths and through a startup path and determining a crankshaft revolution count. The method further includes comparing the determined crankshaft accelerations over the determined revolution count to at least one threshold crankshaft acceleration value over the determined revolution count and determining a misfire condition from one of the startup path and the processing path based on the comparison.