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The Clean Diesel IV Consortium is a four-year cooperative research program with more than 30 members including light-duty, heavy-duty, and off-road engine manufacturers, component suppliers, and oil and fuel companies from around the world. The Clean Diesel IV program builds on 12 years of successful Clean Diesel programs at Southwest Research Institute (SwRI). The core program comprises five projects; additional projects can be added depending on interest and funding. The Clean Diesel IV Consortium is governed by a Program Advisory Committee made up of representatives from each member company.

	Rapid-prototype cylinder head for homogeneous charge compression ignition (HCCl) engine version

Members can login through this site to obtain all reports, presentations, and data.
 

Clean Diesel IV Consortium Objectives

The consortium is designed to develop precompetitive diesel engine technology and transfer this technology to the participants. The primary objective is to reduce oxides of nitrogen (NOx) to 0.2 g/hp-hr and particulates to 0.01 g/hp-hr. A secondary objective is to achieve US Tier 2 / Bin 5 emission standards for light-duty vehicles.

Examples of Previous Clean Diesel Consortia

	SwRI has documented the effect of high-injection pressure increasing fuel-air mixing and reducing soot (SAE 2002-01-0494)

Clean Diesel I (1991–1995):

The Clean Diesel I program investigated the effect of exhaust gas recirculation (EGR) on heavy-duty diesel engine emissions; this technology is now in production.
 

Clean Diesel II (1995–1999):

The Clean Diesel II program examined very high injection pressures, up to 300 MPa (3,000 bar). Today, production injection systems are reaching well over 200 MPa (2,000 bar).
 

	Constant-volume bomb configured as ignition quality tester

Clean Diesel III (1999–2003):

The Clean Diesel III program investigated variable valve actuation, model-based controls, and control issues for lean NOx traps (LNT) and area-selective catalytic reduction (SCR) catalysts.

Homogeneous-charge, compression-ignition combustion was studied under SwRI internal research programs in Clean Diesel I and as part of the Clean Diesel II and III programs.
 

Current Clean Diesel Projects

The current Clean Diesel IV projects were selected from a list of 30 suggested projects by participants at the November 2003 kickoff meeting. The projects will evaluate:

	SwRI developed advanced exhaust treatment solutions in Clean Diesel III

• HCCI

• LNT on a heavy-duty engine

• SCR on a heavy-duty engine

• Light-duty U.S. Tier 2

Clean Diesel IV Consortium Membership and Benefits

Interested companies may join the Clean Diesel IV Consortium at any time during the four-year program. A yearly renewable contract is offered to members.

	Development engine installed in test cell

One advantage of consortium membership is the impact of the yearly contribution is multiplied by the number of participants. Also, SwRI internal research programs investigating control algorithms and modified combustion concepts will be shared with consortium members. SwRI will aggressively pursue patent applications for technology developed during the Clean Diesel IV program, and consortium participants will receive a royalty-free license to use the technology.

Clean Diesel IV Members

For more information about the Clean Diesel IV Consortium at SwRI or how you can contract with SwRI, please contact Thomas W. Ryan at tryan@swri.org or

(210) 522-3192.
 

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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.

April 15, 2009