Internal combustion engine with exhaust aftertreatment and its method of operation
US9567890B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 7, 2011 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Nov 3, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of operating an internal combustion engine is proposed, the engine comprising an exhaust system with a DOC and a DPF and, downstream thereof a SCR catalyst. The ECU is configured to allow operation in at least one of a normal mode and a heat-up mode. A predicted temperature evolution of said second exhaust after treatment means is regularly determined based on a thermal model taking into account the thermal inertia of the exhaust system and having as input the current temperatures of the DOC/DPF and SCR. The predicted temperature evolution of SCR is indicative of the temperature that the SCR may reach during a simulated time period in case the operating mode. The engine operating mode is changed depending on the predicted temperature evolution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.