Title:
DETERMINATION DEVICE, DETERMINATION METHOD, AND DETERMINATION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/196359
Kind Code:
A1
Abstract:
A determination device for an engine (10) in which a flywheel (20) is provided on an output shaft (11) is provided with a rotation speed acquisition unit (110) and a resonance determination unit (120). The rotation speed acquisition unit (110) acquires the rotation speed of the output shaft (11). If a state in which the rotation speed acquired from the start of the engine (10) exceeds the upper limit threshold of the resonance rotation range of the flywheel (20) continues for a predetermined first period or more, the resonance determination unit (120) determines that resonance does not occur. In contrast, if a state in which the acquired rotation speed exceeds the upper limit threshold does not continue for the first period or more during a predetermined second period after the rotation speed exceeds the lower limit threshold of the resonance rotation range, the resonance determination unit (120) determines that resonance occurs.
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Inventors:
SATO YUKI (JP)
KAJIYAMA MASAHIRO (JP)
SUGAYA YUKI (JP)
KAJIYAMA MASAHIRO (JP)
SUGAYA YUKI (JP)
Application Number:
PCT/JP2020/012586
Publication Date:
October 01, 2020
Filing Date:
March 23, 2020
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
F02N11/08; F02D29/02; F02D41/22; F02D45/00
Foreign References:
| JP2005054601A | 2005-03-03 | |||
| JP2005069206A | 2005-03-17 |
Attorney, Agent or Firm:
HIBIYA Yukihiko et al. (JP)
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