Invention Grant
- Patent Title: Catalyst deterioration diagnosis device and catalyst deterioration diagnosis method
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Application No.: US16594240Application Date: 2019-10-07
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Publication No.: US11274592B2Publication Date: 2022-03-15
- Inventor: Osamu Nakasone , Kosuke Monna
- Applicant: NGK INSULATORS, LTD.
- Applicant Address: JP Aichi
- Assignee: NGK INSULATORS, LTD.
- Current Assignee: NGK INSULATORS, LTD.
- Current Assignee Address: JP Aichi
- Agency: Mattingly & Malur, PC
- Priority: JPJP2018-190934 20181009
- Main IPC: F01N11/00
- IPC: F01N11/00 ; F02D41/14 ; G01M15/10
Abstract:
A catalyst deterioration diagnosis device includes: a unit configured to obtain a temperature of a catalyst; a unit configured to obtain a sensor output from a gas sensor disposed between the catalyst and an exhaust port; and a unit configured to determine the catalyst to be faulty when the temperature of the catalyst obtained when the sensor output becomes a preset evaluative output is equal to or higher than an evaluative catalyst temperature.
Information query
