System, method, and apparatus for enhancing aftertreatment regeneration in a hybrid power system
US8549838B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2010 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Jul 30, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method includes providing an internal combustion engine having an output shaft and producing an exhaust gas stream, providing an electric motor operatively coupled to the output shaft, and determining a regeneration state of an aftertreatment component that treats the exhaust gas stream. The method further includes determining an engine torque requirement such that, when the internal combustion engine achieves the engine torque requirement at a present set of operating conditions, a temperature of the exhaust gas stream will achieve an exhaust gas temperature threshold. The method further includes commanding the electric motor to apply a counter torque to the output shaft in response to the regeneration state indicating an active thermal regeneration event, where the counter torque comprises is high enough for the internal combustion engine to achieve the engine torque requirement. The exhaust gas temperature threshold may be a hold-warm temperature and/or a regeneration temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.