Turbocharger incorporating cold light off catalyst and valve positioning control
US12270330B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2023 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Dec 1, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control system for an engine comprising a turbocharger includes a cold light off catalyst (CLOC), a CLOC valve, and a controller. The CLOC is positioned in a bypass passage around a turbine of the turbocharger. The CLOC valve selectively routes exhaust flow from the engine between the turbine and the CLOC. The controller is configured to command the CLOC valve to a first position whereby exhaust flow is routed to the CLOC in a CLOC mode; determine, based on operation in the CLOC mode, a pressure of the turbine of the turbocharger; compare the determined pressure to a pressure threshold; determine a target position of the CLOC valve to mitigate oil leakage from the turbocharger during CLOC operation; and command the CLOC valve to the target position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.