Title:
FATIGUE FAILURE DIAGNOSING METHOD AND DEVICE OF TURBOCHARGER
Document Type and Number:
Japanese Patent JP3945496
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To determine the proper replacing timing of a turbocharger, by determining a degree of fatigue of the turbocharger in response to an actual operation state of an engine.
SOLUTION: This method diagnoses fatigue failure of the turbocharger 5, and determines the fatigue failure of the turbocharger 5 by comparing an arithmetically operated accumulation fatigue value Ft with a predetermined fatigue limit value F1 by arithmetically operating the accumulation fatigue value Ft on the basis of a measured rotating speed by measuring the rotating speed of the turbocharger 5.
Inventors:
Shunji Matsumoto
Mitsuhiro Sonohara
Mitsuhiro Sonohara
Application Number:
JP2004171147A
Publication Date:
July 18, 2007
Filing Date:
June 09, 2004
Export Citation:
Assignee:
Isuzu Motors Limited
International Classes:
F02B39/16; G01M15/04; F01D5/14; F01D5/28; F01D21/00; F01D25/00; F02B39/00; F04D27/02; F04D29/00; G01M99/00; G07C3/00; (IPC1-7): F02B39/16; F01D5/14; F01D5/28; F01D25/00; F02B39/00; F04D29/00; G01M15/00
Domestic Patent References:
| JP63284452A | ||||
| JP62276204A |
Attorney, Agent or Firm:
Nobuo Kinutani