Integrated method for controlling diesel engine emissions in CRT-LNT system
US6718757B2 · kind B2 · utility
32Cited by
41References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2003 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Jan 21, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for controlling diesel engine emissions is disclosed. The diesel engine's exhaust system has a NOx oxidation catalyst, a diesel particulate filter (DPF), and a lean NOx trap (LNT). The DPF is monitored to determine the need for regeneration. The LNT is monitored to determine the need for regeneration or desulfurization. A fuel injector is used to inject fuel upstream of the LNT under certain conditions, and a bypass may be used to bypass exhaust around the oxidation catalyst to provide richer or hotter exhaust to the LNT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.