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:
Aug. 05, 2025
Filed:
Jul. 28, 2021
Honda Motor Co., Ltd., Tokyo, JP;
Tomohiro Miyauchi, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A misfire detection apparatus for multi-cylinder engine is configured to detect a misfiring state in which any of a plurality of cylinders in an engine is misfiring, the engine including: the plurality of cylinders, and a catalyst device configured to purify exhaust gas from the plurality of cylinders. The apparatus includes: a rotation sensor configured to detect a rotational speed of the engine, and an electronic control unit including a processor and a memory coupled to the processor and configured to control operation of the engine. The processor detects the misfiring state of the engine based on the rotational speed of the engine detected by the rotation sensor.