Controller and control method for internal combustion engine
US11965444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2023 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Jun 6, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A controller for an internal combustion engine is configured to execute a determination process that determines that a deviation between a first change amount and a second change amount during a fuel cutoff operation is less than or equal to a threshold, and an anomaly diagnosing process that determines that an exhaust purification device is in a detached state when the determination process determines that the deviation is less than or equal to the threshold. The first change amount and the second change amount are change amounts per unit time of the temperature of exhaust gas on the upstream side and the downstream side of the exhaust purification device, respectively. The controller is configured to interrupt the determination process when the upstream-side temperature increases within a determination period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.