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Clean Diesel Technologies to License ARIS 2000 NOx Reduction Technology

28 June 1999

Clean Diesel Technologies to License ARIS 2000 NOx Reduction Technology for On-Highway, Off-Road Diesel Applications; Expects Commercial Availability This Fall

    STAMFORD, Conn.--June 28, 1999--

Receives Further ARIS(TM) Orders from OEMs

    Clean Diesel Technologies Inc. (EBB:CDTI) Monday announced that it will license distributors for its proprietary ARIS(TM) 2000 diesel NOx reduction technology.
    The company also reported that its August pre-production schedule is already fully booked. CDT expects to deliver commercial orders for the ARIS 2000 this fall. Meanwhile it said it has shipped seven additional systems after successfully completing a 1,500-hour durability test on a portable diesel generator.
    Orders have been received from diesel engine OEMs, as well as catalyst companies and an industrial end user. CDT now has 14 systems ordered or installed, including several prototype systems for mobile application.
    The ARIS 2000 is a low-cost patented urea injection and control system developed by CDT for use in selective catalytic reduction of NOx from diesel engines and other industrial sources. NOx reductions of 70-90 percent have been achieved across a broad range of diesel engine sizes and types in transient and steady state operation.
    Citing the growing interest in NOx reduction from new truck and off-road diesel power vehicles, CDT Chief Operating Officer James Valentine said, "We have also decided to offer the mobile ARIS system technology for license, perhaps to several SCR catalyst manufacturers or a consortium of engine manufacturers, in order to jump-start interest and investment in the technology for mobile on-highway and off-road applications.
    "CDT will provide mobile prototypes, programming and technical support and help licensees with integrating the ARIS 2000 system into their engine and vehicle configurations," he said. "This licensing strategy will better allow CDT to leverage the technical resources and skills developed by its principals in over 15 years of experience with urea-based NOx control.
    "Our near-term focus will be on broad commercialization of our ARIS 2000 system for new and retrofit stationary diesels while supporting our licensees in the mobile sector and continuing to develop the urea reagent infrastructure in conjunction with Fuel Tech Inc. and their network of licensed NOxOUT(R) reagent suppliers," Valentine added.
    "We are taking orders now for commercial delivery in fall of 1999," said T.J. Tarabulski, program manager at CDT. "Our August pre-production run is already fully committed to a range of customers who have ordered multiple units in most cases," he added.
    "We are working to set up distributors to help address the retrofit of ARIS systems to existing stationary diesels. At the same time, we anticipate interest from engine manufacturers in integrating the ARIS 2000 with their shipments of new diesel generation equipment on the basis of lower emissions and improved fuel efficiency and durability for their customers."
    Clean Diesel Technologies is a development-stage company supplying advanced catalytic fuel additives and systems that reduce harmful emissions from internal combustion engines while improving fuel economy in diesel- and gasoline-fueled engines and nitrogen oxide (NOx) reduction systems and chemicals for control of NOx emissions from diesel engines.

    Certain statements in this news release constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements involve known or unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the company, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof.

    Note to Editors: NOxOUT(R) is a registered trademark of Stamford-based Fuel Tech Inc.