Internal combustion engine with exhaust gas aftertreatment and control of the nitrogen oxide emissions
US11898514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2022 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Jul 19, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An internal combustion engine, with an engine regulating device and an exhaust gas aftertreatment device with an SCR catalytic converter for the reduction of at least one NOx component, and with a catalytic converter regulating device, wherein the engine regulating device is prescribed a target value for an NOx mean value of the NOx component of the exhaust gases, which mean value results at an outlet point of the exhaust gas aftertreatment device in relation to a predefinable time period, and the engine regulating device is configured at least in one operating mode to continuously calculate an NOx reference value for the catalytic converter regulating device with consideration of Nox components which have already been emitted and the predefined target value, which reference value is selected in such a way that the predefined target value results at the outlet point of the exhaust gas aftertreatment device at the end of the predefinable time period when the calculated NOx reference value of the catalytic converter regulating device is fed as NOx setpoint value to the regulating means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.