Measurement of NO and NO 2 for control of selective...

Details Measurement of NO and NO 2 for control of selective... Measurement of NO and NO 2 for control of selective...

2008-04-24

2009-11-03

Vo, Hieu T (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C423S237000

Reexamination Certificate

active

07613561

ABSTRACT:
A selective catalytic reduction system includes a catalyst, a device to measure an amount of nitrogen oxide (NO), a device to measure an amount of nitrogen dioxide (NO2), a device to add an ammonia source, and a control unit to calculate the amount of ammonia source to add as a function of a ratio of an amount of nitrogen oxide and an amount of nitrogen dioxide or an absolute amount of nitrogen oxide and an absolute amount of nitrogen dioxide.

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Chen, Ming , et al., “Modelling and Optimization of SCR-Exhaust Aftertreatment Systems”,SAE 2005-01-0969, SAE International Paper,(2005),1-11.
Chi, John N., et al., “Modelling and Control of a Urea-Scr Aftertreatment System”,SAE 2005-01-0966, SAE International Paper,(2005),1-18.
Majewski, W. A., “SCR Systems for Mobile Engines”, www.dieselnet.com, (2005).
Schar, C. M., et al., “Control of an SCR catalytic converter system for a mobile heavy-duty application”,IEEE Transactions on Control Systems Technology, 14(4), (Jul. 2006),641-653.
Van Helden, Rinie , et al., “Optimization of Urea Scr Denox Systems for Hd Diesel Engines”,SAE 2004-01-0154, SAE International Paper,(Mar. 2004),1-15.

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