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	Graph showing equivalence ratio and smoke during LNT regeneration event
	Graph showing equivalence ratio data

The Clean Diesel Consortium is managed by Southwest Research Institute (SwRI) and has been operating since 1991. The current program, Clean Diesel V, began upon completion of Clean Diesel IV on November 1, 2007. The overall objective of the program focuses on the development of advanced combustion engines.

Clean Diesel IV (2003–2007) continued work from Clean Diesel III in the development of the full operating range HCCI engine concept. Acceptable operation with peak loads of 11 Bar was demonstrated in a multi-cylinder HCCI engine using low octane gasoline specially formulated for HCCI operation. Preliminary data indicated that Tier II, Bin 2 diesel technology is possible.

Highlights and Outcomes:

• Achieving 2010 HD on-road emissions standards using minimum post-combustion NOx emissions control

• Incorporating massive exhaust gas recirculation (EGR) for in-cylinder NOx control

• Using high boost to maintain power density at acceptable overall air-fuel ratios for control of soot formation

• Using small injection nozzle holes and high injection pressure to increase fuel-air mixing rates for additional control of soot formation processes

• Incorporating advanced model-based control for system optimization

• Determining fuel property effects, including use of oxygenated fuels, and monitor lube oil condition to determine effects of low-temperature combustion

More information about the Clean Diesel Consortium is available at www.cleandiesel.swri.org

A brochure highlighting the Clean Diesel Program is available.

For more information about our powertrain control capabilities, or how you can contract with SwRI, please contact Jayant Sarlashkar at jsarlashkar@swri.org or (210) 522-5506.

powertraincontroltech.swri.org

| Engine and Vehicle R&D Department | Engine, Emissions & Vehicle Research Division | SwRI Home |

Southwest Research Institute^® (SwRI^®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

December 28, 2012