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. 25, 2019
Filed:
Mar. 14, 2017
Mazda Motor Corporation, Hiroshima, JP;
Tomohisa Handa, Hatsukaichi, JP;
Kunihiro Nishi, Higashihiroshima, JP;
Hisashi Okazawa, Hiroshima, JP;
Kenko Ujihara, Higashihiroshima, JP;
MAZDA MOTOR CORPORATION, Hiroshima, JP;
Abstract
Provided is an engine oil deterioration diagnosis device () comprising annual traveling distance calculating part (), a used hour calculating part (), a severe condition determining part (), an oil traveling distance calculating part (), an oil traveling distance accumulating part (), and an engine oil deterioration diagnosis part () for diagnosing that engine oil is in a state of deterioration when an oil traveling distance accumulated by the oil traveling distance accumulating part reached a predetermined value, wherein the oil traveling distance calculating part () comprises an oil traveling distance addition correcting part () for calculating the oil traveling distance by adding a predetermined value to the traveling distance when the severe condition determining part determines the state as the severe condition.