Title:
LIFESPAN PREDICTION DEVICE AND LIFESPAN PREDICTION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/065213
Kind Code:
A1
Abstract:
Provided is a lifespan prediction device 100, comprising: an operation history accumulation unit 102 that accumulates the operation history of a component constituting a vehicle; a lifespan prediction unit 103 that, on the basis of the operation history, computes a cumulative stress on the component and a stress increase rate and, on the basis of the cumulative stress and the stress increase rate, predicts a remaining travel distance until the component reaches the end of the lifespan thereof; a usage area frequency computation unit 104 that, on the basis of a rotational rate and a load of an internal combustion engine installed in the vehicle, computes a usage area frequency of the internal combustion engine; a usage area frequency storage unit 105 that stores the usage frequency; and a divergence computation unit 106 that computes a divergence between a most recent value of the usage area frequency and a previous value of the usage area frequency. If the divergence is at or above a threshold value, the lifespan prediction unit 103 computes the increase rate on the basis of only the operation history accumulated after the most recent value was computed.
Inventors:
OSADA HIDEKI (JP)
Application Number:
PCT/JP2021/034229
Publication Date:
March 31, 2022
Filing Date:
September 17, 2021
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
G01M99/00; G01M17/007
Foreign References:
| JP2012233336A | 2012-11-29 | |||
| JP2006017471A | 2006-01-19 | |||
| JP2018155517A | 2018-10-04 | |||
| KR20030083329A | 2003-10-30 | |||
| CN101393079A | 2009-03-25 |
Attorney, Agent or Firm:
HIBIYA Yukihiko et al. (JP)
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