Exhaust vane braking transition and correction strategy
US12378923B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2024 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Sep 13, 2044 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B37/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control system and method for operating a gasoline engine comprising a turbocharger having a compressor and a turbine is provided. The system includes a throttle, vanes on the turbine, at least one cam, and a controller. The controller controls a transition into vane braking and is configured to: command the throttle to move to the closed position; command the vanes to the open position; determine whether additional negative torque is required; activate vane braking based on the determination that additional negative torque is required; command the vanes to the closed position; command the at least one cam to a maximum volumetric efficiency position; determine whether the at least one cam is at a maximum volumetric efficiency position; and command the throttle to the open position based on the determination that the at least one cam is at the maximum volumetric efficiency position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.