System and method for in-cylinder dosing (ICD) for an engine
US11982244B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2022 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Dec 16, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/101
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This disclosure relates generally to emissions treatment devices including aftertreatment devices that may be utilized with internal combustion engines and, more particularly, to methods and systems for controlling in-cylinder dosing (ICD) and preventing fuel to oil dilution. A method of operating an engine converting an amount of heat needed for regenerating an aftertreatment device into a cam-stroke fueling strategy. The method further includes determining a number of the engine's cylinders to be active cylinders for introducing dosing fuel and calculating a total dosing fuel apportionment of the dosing fuel for each of the active cylinders based on the cam-stroke fueling strategy. A number of dosing shots per injector for each of the active cylinders can be calculated based on the total dosing fuel apportionment and an amount of dosing fuel is apportioned for each dosing shot according to the cam-stroke fueling strategy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.