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:
Jan. 26, 2021
Filed:
Sep. 26, 2018
Jaeyeong Chang, Ann Arbor, MI (US);
Richard K Moote, Ann Arbor, MI (US);
Arthur J Varady, Chelsea, MI (US);
Ilias Anagnostopoulos-politis, Pinckney, MI (US);
Zhe Wang, Farmington Hills, MI (US);
Yan Zhang, Auburn Hills, MI (US);
Jaeyeong Chang, Ann Arbor, MI (US);
Richard K Moote, Ann Arbor, MI (US);
Arthur J Varady, Chelsea, MI (US);
Ilias Anagnostopoulos-Politis, Pinckney, MI (US);
Zhe Wang, Farmington Hills, MI (US);
Yan Zhang, Auburn Hills, MI (US);
FCA US LLC, Auburn Hills, MI (US);
Abstract
A misfire detection system and method for a vehicle utilize a controller to obtain a crankshaft speed signal indicative of a rotational speed of an engine crankshaft connected to a device that mitigates vibrational disturbances at the crankshaft caused by misfires of the engine, detect that a first firing event of the engine is a first misfire based on the crankshaft speed signal, monitor a vibrational response of the crankshaft, detect that a consecutive second firing event of the engine is a second misfire based on a first modified crankshaft speed signal and the first set of thresholds, and in response to detecting the second misfire, reset the monitoring of the vibrational response of the crankshaft including modifying the amplitude of the crankshaft speed signal to obtain a second modified crankshaft speed signal and comparing the second modified crankshaft speed signal to a set of thresholds.