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. 07, 2020
Filed:
Nov. 03, 2017
Kawasaki Jukogyo Kabushiki Kaisha, Kobe-shi, Hyogo, JP;
KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe-shi, Hyogo, JP;
Abstract
A misfire determination device of an internal combustion engine, includes an angular velocity obtaining section which obtains two crank angular velocities corresponding to two crank angular positions, respectively, which are set between a range which is around a first compression top dead center and a range which is around a second compression top dead center, in which the first compression top dead center is a compression top dead center of a determination target cylinder, and the second compression top dead center is the compression top dead center of a next ignition cylinder in which ignition is performed next to the ignition performed in the determination target cylinder; and a misfire determination section which determines whether or not misfire has occurred in the determination target cylinder based on a result of comparing a deviation between the two crank angular velocities to a predetermined misfire determination threshold.