Title:
ABNORMALITY DETERMINATION DEVICE OF THROTTLE VALVE
Document Type and Number:
Japanese Patent JP2017141764
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an abnormality determination device of a throttle valve capable of reducing the erroneous determination caused by the freeze of the throttle valve.SOLUTION: An abnormality determination device 60 comprises: a first temperature acquisition part 73 for acquiring an intake air temperature which is a temperature within a passage as a first temperature; a second temperature acquisition part 74 for acquiring an inflow temperature which is a temperature within a passage as a second temperature; an air quantity acquisition part 75 for acquiring an intake air amount which is a mass flow of intake air; and a permission/rejection determination part 72 for determining the permission/rejection of the fastening determination of a throttle valve based on the first temperature, the second temperature, and the intake air amount, in which at the start of an engine, if the first temperature is a freezing temperature or less at which the throttle valve can freeze, the permission/rejection determination part 72 prohibits the fastening determination; and after the prohibition of the fastening determination, when the second temperature is a melting temperature or more at which a freezing part of the throttle valve melts, if the integrated value of the calorie conversion value exceeds the threshold level based on the second temperature and the intake air amount, the permission/rejection determination part permits the fastening determination.SELECTED DRAWING: Figure 2
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Inventors:
KANEDA MOTOYOSHI
Application Number:
JP2016024531A
Publication Date:
August 17, 2017
Filing Date:
February 12, 2016
Export Citation:
Assignee:
HINO MOTORS LTD
International Classes:
F02D11/10; F02B29/04; F02D9/02; F02D45/00
Domestic Patent References:
| JP2001295670A | 2001-10-26 | |||
| JP2006249952A | 2006-09-21 | |||
| JP2015178812A | 2015-10-08 | |||
| JPH0617718A | 1994-01-25 | |||
| JP2003129869A | 2003-05-08 | |||
| JP2009156228A | 2009-07-16 |
Foreign References:
| WO2008004421A1 | 2008-01-10 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda
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