System and method for determining an ammonia generation rate in a three-way catalyst
Patent
·
OSTI ID:1166775
A system according to the principles of the present disclosure includes a rate determination module, a storage level determination module, and an air/fuel ratio control module. The rate determination module determines an ammonia generation rate in a three-way catalyst based on a reaction efficiency and a reactant level. The storage level determination module determines an ammonia storage level in a selective catalytic reduction (SCR) catalyst positioned downstream from the three-way catalyst based on the ammonia generation rate. The air/fuel ratio control module controls an air/fuel ratio of an engine based on the ammonia storage level.
- Research Organization:
- GM Global Technology Operations LLC, N/A (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EE0003379
- Assignee:
- GM Global Technology Operations LLC (N/A)
- Patent Number(s):
- 8,919,099
- Application Number:
- 13/157,669
- OSTI ID:
- 1166775
- Country of Publication:
- United States
- Language:
- English
Coordinated control of engine and after treatment systems
|
patent | March 2017 |
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