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:
Jun. 21, 2022
Filed:
Nov. 25, 2019
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An engine misfire detection device such that an engine misfire state can be accurately detected is obtained. The engine misfire detection device includes an engine rotational speed change amount detector that detects an engine rotational speed change amount, an engine rotational speed change amount threshold setter that sets a threshold with respect to the rotational speed change amount, and a misfire detector that compares the rotational speed change amount and the threshold, carries out a misfire determination on the engine when the rotational speed change amount exceeds the threshold, and carries out a misfire detection, wherein the misfire detector prohibits the misfire determination when a switching between a differentially locked state and an unlocked state is carried out.