Title:
スロットルバルブの異常判定装置
Document Type and Number:
Japanese Patent JP6625893
Kind Code:
B2
Abstract:
A throttle valve abnormality determination device includes a first temperature acquisition unit configured to acquire a first temperature that is a temperature in a passage through which intake air flows, a second temperature acquisition unit configured to acquire a second temperature that is a temperature in the passage, an air amount acquisition unit configured to acquire an intake air amount that is a mass flow rate of the intake air, and a permission/rejection determination unit configured to determine whether or not to permit a sticking determination of a throttle valve based on the first temperature, the second temperature, and the intake air amount. The permission/rejection determination unit is configured to prohibit the sticking determination if the first temperature is less than or equal to a freezing temperature at which the throttle valve may be frozen when an engine is started and, after prohibiting the sticking determination, permit the sticking determination if an integrated value of a heat amount conversion value based on the second temperature and the intake air amount exceeds a threshold value when the second temperature is greater than or equal to a de-freezing temperature at which a frozen portion of the throttle valve is de-frozen.
Inventors:
Kaneda Motoyoshi
Application Number:
JP2016024531A
Publication Date:
December 25, 2019
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 | ||||
| JP2006249952A | ||||
| JP2015178812A | ||||
| JP6017718A | ||||
| JP2003129869A | ||||
| JP2009156228A |
Foreign References:
| WO2008004421A1 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda