Model Based Control of SCR Dosing and OBD Strategies with Feedback from NH3 Sensors
- 20 April 2009
- journal article
- Published by SAE International in SAE International Journal of Fuels and Lubricants
- Vol. 2 (1), 375-385
- https://doi.org/10.4271/2009-01-0911
Abstract
This paper presents a model-based control system for SCR urea dosing employing an embedded real-time SCR chemistry model and a NH₃ sensor. The control algorithm consists of a number of control features designed to enhance ammonia storage control and closed-loop compensation using the mid-brick NH₃Keywords
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