Controller for internal combustion engine, control method for internal combustion engine, and memory medium
US12071908B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2023 |
| Grant date | Aug 27, 2024 |
| Priority date | — |
| Expiry date | Sep 26, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/0804
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An upstream integrated value is an integrated value of a difference obtained by subtracting an upstream gas temperature at a starting point in time of integration from the upstream gas temperature after starting of the internal combustion engine. A downstream integrated value is an integrated value of a difference obtained by subtracting a downstream gas temperature at the starting point in time of the integration from the downstream gas temperature after the starting of the internal combustion engine. An anomaly diagnosing process obtains an anomaly determination result indicating that the exhaust purification device is in a removed state when a deviation between the upstream integrated value and the downstream integrated value is smaller than a reference level. The determination threshold is higher than a dew point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.