Clean Diesel Introduces Urea Quality Sensor Technology in Europe

STAMFORD, Conn.--Feb. 22, 2006--Clean Diesel Technologies, Inc. a developer of technological solutions to reduce harmful engine emissions, announced today that it has entered into an agreement with Mitsui Mining and Smelting Co., Ltd. / Mitsui Kinzoku ("Mitsui") to support the introduction of urea quality sensor technology for NOx reduction into the European market place.

SCR (Selective Catalytic Reduction) has become the technology of choice for the majority of heavy duty diesel truck manufactures to ensure EURO 5 NOx reduction levels are achieved.

The urea quality sensor technology addresses industry quality control concerns by ensuring a specific quality of urea is delivered into the exhaust gas stream. The introduction of a urea quality sensor into the SCR system also reduces the risk of tampering or accidental mis-filling and helps ensure compliance, thus satisfying concerns of users and legislators alike. This contributes to the overall success of SCR as a NOx reduction technology.

Tim Rogers, Executive Vice President of Clean Diesel International Operations, comments: "Mitsui has extensive experience in SCR compliance technology and has greatly contributed to the successful introduction of SCR in Japan. This technology removes one of the few remaining barriers to the application of SCR technology as a global solution to the reduction of harmful nitrous oxides from diesel vehicles. We look forward to assisting Mitsui in developing the European market for their urea quality sensor."

John Crawford, Vice President for Mitsui's Global Corporate Planning Group stated: "We are delighted to be working with Clean Diesel Technologies, Inc. who have a long and successful track record of introducing emission control technology into the market place. We look forward to a prosperous relationship and utilizing their vast knowledge of the European market to develop our urea quality sensor's roadmap."

Mitsui have deployed their urea quality sensor in every SCR vehicle introduced into Japan and are now working in partnership with Clean Diesel Technologies, Inc. to satisfy the global requirement for SCR compliance technology.

About Clean Diesel Technologies, Inc.

Clean Diesel Technologies, Inc. and its UK representative office, Clean Diesel International LLC, is a developer of technological solutions to reduce harmful engine emissions. Clean Diesel Technologies has patented products that reduce emissions from combustion engines while simultaneously improving fuel economy and power. Products include Platinum Plus(R) fuel-borne catalysts (FBC), the Platinum Plus Purifier System and the ARIS(R) 2000 urea-injection systems for selective catalytic reduction of NOx. Platinum Plus and ARIS are registered trademarks of Clean Diesel Technologies, Inc. For more information, visit CDT at www.cdti.com or contact the Company directly.

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