Title:
異常判別装置
Document Type and Number:
Japanese Patent JP6536485
Kind Code:
B2
Abstract:
An abnormality determination device includes an injection instructor that realizes a rich state of an air-fuel ratio in an exhaust gas by sending an instruction of (i) stopping an application of bias to a plus terminal and (ii) adjusting a fuel injection amount from an injector. The abnormality determination device also includes an abnormality determiner that distinctively determines abnormality of, i.e., in terms of which one of, the plus terminal or a minus terminal having a short circuit to a power supply or a ground failure by detecting an electromotive force of an air-fuel ratio sensor when the air-fuel ratio in the exhaust gas is in the rich state according to the instruction of the injection instructor.
Inventors:
Kamiya Yuto
Shohei Fujita
Shohei Fujita
Application Number:
JP2016107374A
Publication Date:
July 03, 2019
Filing Date:
May 30, 2016
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01N27/41; G01N27/419
Domestic Patent References:
| JP2016070881A | ||||
| JP2006208363A | ||||
| JP2008075627A | ||||
| JP2010160010A | ||||
| JP2004333374A | ||||
| JP2009198196A |
Attorney, Agent or Firm:
Patent Business Corporation Sato International Patent Office