Diagnostic device for exhaust gas aftertreatment device, diagnostic method for exhaust gas aftertreatment device, and diagnostic program for exhaust gas aftertreatment device
US12404816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2023 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Jan 24, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A diagnostic device for an exhaust gas aftertreatment device includes a temperature detection device that detects a filter inlet-side temperature and a filter outlet-side temperature, a differential pressure detection device that detects a differential pressure between a filter inlet-side pressure and a filter outlet-side pressure, an intake air pressure detection device that detects an intake air pressure of an engine, and a controller that determines a malfunction in an exhaust gas aftertreatment device based on values detected by the temperature detection device, the differential pressure detection device, and the intake air pressure detection device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.