SAE 2013 Fuels, Lubricants, and Aftertreatment Symposium: Achieving Fuel Economy and GHG Targets
Technical Session Schedule
Wednesday, November 20
Emissions Control: Light Duty Exhaust Systems
(Session Code: FLE302)
Room Regency A 1:30 p.m.
The light duty exhaust system session will focus on the development of emissions control systems for chassis certified light duty gasoline and diesel vehicles. Expert panelists from vehicle and engine manufacturers will discuss strategies for the synergistic integration of light duty aftertreatment systems which are capable of simultaneously meeting future criteria pollutant emissions standards, while enabling the vehicle to meet the legislated greenhouse gas emissions limits.
Moderators - Mansour Masoudi, Emissol
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|Diesel Cold-start Emission Control Strategy for LEV III/Tier 3
Diesel powertrains offer an attractive solution for manufacturers to meet the stringent CAFE regulations phasing in from 2017-2025, especially for larger segment vehicles. Diesels must also comply with the increasingly stringent LEV III and Tier 3 regulations which constitute a 70% reduction in criteria pollutants relative to today's standard. SwRI has developed a novel diesel cold-start emissions control strategy that significantly reduces emissions during hill one of the FTP75, the critical time when the underfloor NOx aftertreatment system is below operating temperature. The strategy combines several engine tuning measures with a close-coupled lean NOx trap (LNT) to enable simultaneous NOx and HC control quickly. Applying this strategy to a 2L class diesel engine resulted in a 57% reduction in cumulative tailpipe NOx + HC emissions at the end of hill one compared to a production Tier 2 Bin 5 vehicle. SwRI has confirmed the potential of meeting LEV III with this level of cold-start emission reduction.
Gary D. Neely, Southwest Research Institute
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|Aftertreatment Systems for Future Lean Burn Engines
This talk will provide an overview of aftertreatment options and challenges to achieve stringent future emission regulations while enabling fuel efficient lean burn gasoline and diesel engines. The need for high efficiency low temperature aftertreatment technologies will be discussed.
Wei Li, GM R&D Center
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|A Systems Approach to Meet Future Fuel Economy and Emissions Regulations
This presentation will cover Cummins efforts to meet Tier 2 Bin 2 emissions level while achieving very high fuel economy in a full sized one-half ton pick-up truck. Future fuel economy requirements for pick-up trucks will be very difficult to meet while meeting the customers’ expectations for performance. Adding to that difficulty will be the need to be at or near zero emissions at the tailpipe. Cummins and the Department of Energy have teamed up to demonstrate at least one solution to help vehicle manufacturers meet this challenge. This talk will focus on the engine and aftertreatment systems employed on the ATLAS engine project.
Michael Ruth, Cummins Inc.