Title:
内燃機関の故障診断装置及び内燃機関の制御装置
Document Type and Number:
Japanese Patent JP5853856
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a failure diagnosis device of an internal combustion engine capable of suitably estimating a failure location inviting a rough idle, and to provide a control device of the internal combustion engine.SOLUTION: A failure diagnosis device of an internal combustion engine includes the steps of: counting a decrease frequency of a workload equivalent value being an index value of the workload of an internal combustion engine for each combustion during idling (S104); and recording the lowest intake pressure, the lowest rail pressure, and the highest EGR excess ratio of the internal combustion engine in the generation period of decrease in the workload equivalent value, as data for diagnosis (S112) when the decrease frequency exceeds a default (S109:YES). The data for diagnosis recorded here is used to estimate a failure location of the internal combustion engine causing a rough idle by multi-cylinder abnormal conditions at the failure diagnosis of the internal combustion engine using an external diagnostic tool.
Inventors:
Maeda Sayao
Application Number:
JP2012109732A
Publication Date:
February 09, 2016
Filing Date:
May 11, 2012
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02D45/00; F02D41/16
Domestic Patent References:
| JP2010144533A | ||||
| JP61258955A | ||||
| JP2001317403A | ||||
| JP2004036420A | ||||
| JP2000097098A | ||||
| JP62013753A | ||||
| JP10141150A | ||||
| JP2008215113A | ||||
| JP2004150302A |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda