Title:
エンジン診断装置
Document Type and Number:
Japanese Patent JP6373012
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an engine diagnosis device simpler and highly accurate.SOLUTION: An engine diagnosis device comprises: a reception element 2 sensing an acoustic emission wave which is emitted from an engine component member during operation of an engine 1, and outputting a sound wave signal; a maximum amplitude value calculation part calculating the maximum amplitude value contained in a predetermined time region of the sound wave signal at every measuring period; an evaluation value calculation part calculating a calculated evaluation value on the basis of plural maximum values obtained over plural measuring periods; and an evaluation part comparing the evaluation value with a preset threshold to determine abnormality of the engine component member.
Inventors:
Daisuke Kitai
Terumi Miyahara
Morihiko Maeda
Teruo Hioki
Terumi Miyahara
Morihiko Maeda
Teruo Hioki
Application Number:
JP2014027500A
Publication Date:
August 15, 2018
Filing Date:
February 17, 2014
Export Citation:
Assignee:
OSAKA GAS CO.,LTD.
Chiyoda Kakoh Construction Co., Ltd.
Chiyoda Kakoh Construction Co., Ltd.
International Classes:
F02D45/00; F02F7/00; F16C9/02; G01N29/14
Domestic Patent References:
| JP62280651A | ||||
| JP2006217943A | ||||
| JP2004360546A | ||||
| JP2001324417A |
Attorney, Agent or Firm:
Patent business corporation r&c