Engine controls for exhaust aftertreatment thermal management
US12209547B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2022 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Nov 18, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/101
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method includes operating an engine system including a plurality of cylinders, a plurality of fuel injectors configured to provide fuel the plurality of cylinders, a compression braking system configured to selectably brake at least a first set of the plurality of cylinders, and an exhaust aftertreatment system including at least one catalyst. The method includes determining a condition for brake-fuel operation and, in response to the act of determining, operating the engine in a brake-fuel mode wherein the compression brake is actuated to provide compression braking of the first set of the plurality of cylinders and a second set of the plurality of cylinders receives and combust fuel provided from respective ones of the plurality of fuel injectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.