Title:
内燃機関の制御装置
Document Type and Number:
Japanese Patent JP7322652
Kind Code:
B2
Abstract:
To provide a control device for an internal combustion engine capable of detecting an abnormality of blow-by gas to appropriately detect accumulation of foreign matters in the circumference of a piston ring by using a simpler configuration and processing with lower load.SOLUTION: A control device for an internal combustion engine detects presence/absence of accumulation of foreign matters in the circumference of a piston ring of the internal combustion engine. The control device includes: an operating state detection section detecting operating states of the internal combustion engine; a first crank case inner pressure acquisition section acquiring crank case inner pressure of the internal combustion engine which is one of the operating states for a first predetermined time; and an abnormality detection section detecting presence/absence of accumulation of foreign matters in the circumference of the piston ring of the internal combustion engine on the basis of presence/absence of an abnormal step that is a pressure step larger than abnormal step pressure set as a threshold value of abnormality determination when a pressure step that is stepped fluctuation amount of the acquired crank case inner pressure is detected.SELECTED DRAWING: Figure 9
Inventors:
Takashi Ijuin
Application Number:
JP2019188485A
Publication Date:
August 08, 2023
Filing Date:
October 15, 2019
Export Citation:
Assignee:
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
International Classes:
F02D45/00; F02B77/04; F02D43/00
Domestic Patent References:
| JP2017137831A | ||||
| JP2013117176A | ||||
| JP2009085177A | ||||
| JP2005264852A | ||||
| JP59067543U | ||||
| JP2007071112A | ||||
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| JP2006327363A | ||||
| JP2009108746A | ||||
| JP2014208987A |
Foreign References:
| US20130073174 | ||||
| US20110213538 | ||||
| US20160319762 |
Attorney, Agent or Firm:
Patent Attorney Corporation Okada International Patent Office