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The Development of Advanced Urea-SCR Systems for Tier 2 Bin 5 and Beyond Diesel Vehicles Ford Motor Company
- Format:
- Conference/Event
- Author/Creator:
- Guo, Guo, author.
- Conference Name:
- SAE 2010 World Congress & Exhibition (2010-04-13 : Detroit, Michigan, United States)
- Language:
- English
- Physical Description:
- 1 online resource
- Place of Publication:
- Warrendale, PA SAE International 2010
- Summary:
- An advanced diesel aftertreatment system utilizing Selective Catalytic Reduction (SCR) with urea for lean nitrogen oxides (NOx) control was tested on a 2.7L V6 Land Rover vehicle to demonstrate the capability of achieving Tier 2 Bin 5 and lower emission standards for light-duty trucks. SCR washcoat was applied to a diesel particulate filter (DPF) to perform NOx and particulate reduction simultaneously. Advanced SCR systems employed both traditional SCR catalysts and SCR-coated filters (SCRF) to improve the NOx reduction efficiency. The engine-out NOx level was adjusted by modifying the EGR (Exhaust Gas Recirculation) calibration. Cold start NOx performance was improved by SCR warm-up strategy and urea over injection. This study showed the advanced SCR system could tolerate higher NH₃ storage in the SCR catalyst, resulting in overall higher NOx conversion on the FTP-75 test cycle. With a modified strategy, the aftertreatment system (oven aged to represent 120k mi) achieved 0.046 g/mi for NOx tailpipe emission and 0.023 g/mi for NMHC tailpipe emission
- Notes:
- Vendor supplied data
- Publisher Number:
- 2010-01-1183
- Access Restriction:
- Restricted for use by site license
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