排気管燃料噴射器用故障診断装置

Title:

排気管燃料噴射器用故障診断装置

Document Type and Number:

Japanese Patent JP6417889

Kind Code:

B2

Abstract:

Provided is a fault diagnosis device for an exhaust pipe fuel injector for diagnosing a normality or an abnormality of the exhaust pipe fuel injector. The fault diagnosis device (117) for an exhaust pipe fuel injector includes a storage unit (119) which stores a regeneration duration and an instructed fuel injection amount in the regeneration duration, a calculation unit (120) which calculates an instructed fuel injection amount per unit time in the regeneration duration, and a fault diagnosis unit (121) which diagnoses that the exhaust pipe fuel injector (116) is abnormal when the instructed fuel injection amount per unit time in the regeneration duration exceeds a fault threshold, and diagnoses that the exhaust pipe fuel injector (116) is normal when the instructed fuel injection amount per unit time in the regeneration duration does not exceed the fault threshold.

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Inventors:

Issei Toshio
Yukihiro Kawashima
Tomoya Kaji
Koji Sakumoto
Matsushita Shuya

Application Number:

JP2014235919A

Publication Date:

November 07, 2018

Filing Date:

November 20, 2014

Export Citation:

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