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:
Oct. 02, 2018
Filed:
Feb. 18, 2015
Mazda Motor Corporation, Aki-gun, Hiroshima, JP;
Amane Tsuda, Hatsukaichi, JP;
Hiroaki Deguchi, Hiroshima, JP;
Kenjiro Konomi, Hiroshima, JP;
Nobuo Yunoki, Aki-gun, JP;
Yasushi Niwa, Higashihiroshima, JP;
Kazuya Niida, Hiroshima, JP;
Mazda Motor Corporation, Aki-gun, Hiroshima, JP;
Abstract
An abnormality detector of a turbocharged engine includes: a compressor including a plurality of blades that are detected portions; and a detecting portion configured to electrically detect the plurality of blades. Each time the blades are detected a predetermined number of times, one pulse having a pulse width corresponding to a measurement time required to detect the blades is output, and a turbo revolution is calculated from the pulse width of the output pulse. When it is judged that a rotation change of the rotating body which change is calculated based on a pulse width of a first pulse and a pulse width of a second pulse output after the first pulse exceeds a predetermined rate in a region where the rotating body exceeds a predetermined revolution, it is determined that an abnormality of the blade or an electromagnetic noise abnormality of the detecting portion occurs.