Control of cold light off catalyst
US12270329B1 · 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 determine an engine torque request; determine an intake manifold pressure target; determine whether an intake manifold pressure target is greater than a barometric pressure; command the CLOC valve to a first position whereby exhaust flow is routed, at least partially, to the CLOC in a CLOC mode based on the intake manifold pressure target is not greater than the barometric pressure; and command the CLOC valve to a second position whereby exhaust flow is routed fully to the turbocharger based on the intake manifold pressure target is greater than the barometric pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.