Attenuation of engine harshness during lean-to rich transitions
US7191591B2 · kind B2 · utility
4Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2003 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Sep 7, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Engine systems and methods for accomplishing regeneration of a NOx adsorber (28) using in-cylinder post-injection in a way that creates a lean-rich transition (FIG. 3) for regenerating the NOx adsorber while attenuating engine torque output fluctuations during the transition without the necessity of using torque sensing to attenuate the fluctuations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.