Title:
Abnormality decision device
Document Type and Number:
Japanese Patent JP6256400
Kind Code:
B2
Abstract:
An internal combustion engine to which the apparatus is applied is a multi-cylinder internal combustion engine that includes a passage injection valve and a cylinder injection valve and that can use gasoline and alcohol as fuel. The apparatus performs abnormality determination for a determination object device, based on a detection signal of an oxygen sensor provided in an exhaust passage of the internal combustion engine. The concentration sensor detects alcohol concentration ALp of the fuel in a first fuel passage through which the fuel is fed to the passage injection valve, and alcohol concentration ALd of the fuel in a second fuel passage through which the fuel is fed to the cylinder injection valve. When a difference ΔAL between the alcohol concentrations ALp, ALd is a determination value or greater (S13: YES), the execution of the abnormality determination is prohibited (S12).
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Inventors:
Yuuo Nakajima
Application Number:
JP2015066988A
Publication Date:
January 10, 2018
Filing Date:
March 27, 2015
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02D41/22; F02D41/04; F02D45/00; F02M25/00; F02M37/00; F02M55/02
Domestic Patent References:
| JP2010001845A | ||||
| JP2010001846A | ||||
| JP2014095321A | ||||
| JP2011163158A | ||||
| JP2009275627A |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda