Clean  Diesel  Technologies,  Inc.
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300 ATLANTIC STREET, SUITE 702, STAMFORD, CT 06901-2522 TEL: (203) 327-7050
                                                        FAX: (203) 323-0461



NEWS RELEASE FORAUGUST 8, 2005 AT 2:30 AM EST AND 7:30 AM GMT
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Contact: ALLEN & CARON IN                    or           CLEAN DIESEL TECHNOLOGIES, INC.
         Jesse E. Deal (US investors)                     James M. Valentine, President
         (212) 691-8087; jesse@allencaron.com             (203)-327-7050; jvalentine@cdti.com
         Len Hall (US media)                              David W. Whitwell, CFO
         (949) 474-4300; len@allencaron.com               (203) 327-7050; dwhitwell@cdti.com

     ABCHURCH COMMUNICATIONS
         Heather Salmond (UK investors) +44 (0)20 7398 7700
         heather.salmond@abchurch-group.com



 DR. WALTER COPAN APPOINTED VICE PRESIDENT AND CHIEF TECHNOLOGY OFFICER OF CLEAN
                            DIESEL TECHNOLOGIES, INC.

     STAMFORD, CT (AUGUST 8, 2005)   Clean Diesel Technologies, Inc. (CDT)
(EBB:CDTI & AIM:CDT/CDTS) a developer of chemical and technological solutions to
reduce harmful engine emissions, announced today that effective August 3, 2005,
Walter Copan, Ph.D., has been appointed Vice President and Chief Technology
Officer.

     "Hiring  a proven leader like Dr. Copan is an important step for the growth
of  CDT  as a technology company," said Bernhard Steiner, CEO.  "Dr. Copan is an
excellent  addition  to  the Clean Diesel team as he brings strong environmental
and  chemical  experience  to  the  Company."

     Most  recently  Dr.  Copan  was  Principal  Licensing Executive, Technology
Transfer,  for  the  U.S.  Department  of  Energy's  National  Renewable  Energy
Laboratory (NREL) based in Golden, CO.  NREL is the DOE's premier laboratory for
energy  efficiency  and  renewable  energy  research.  At  NREL,  Dr.  Copan was
responsible for commercialization of clean energy, energy efficiency and related
technologies,  through  partnerships  with  industry,  academia, and government.

     Prior to joining NREL, Dr. Copan was Managing Director, Technology Transfer
and Licensing for The Lubrizol Corporation.  Previous assignments in Dr. Copan's
28  year career with Lubrizol include a variety of leadership roles in research,
development  and  engineering,  product  development,  strategy,  international
business  development  and  new  ventures.   He  also  headed Lubrizol Petroleum
Chemicals  Technology  based  in  the  U.K.,  with  responsibility  for  product
development,  program  management  and  technical service for Europe, the Middle
East,  Africa  and  the  Former  Soviet  Union.

     Commenting  on  his  appointment,  Dr.  Copan said: "It is a pleasure to be
joining  Clean  Diesel  and  to work with the Company's partners to bring proven
technologies  for  energy efficiency, environment protection and renewable fuels
to  the  global  transportation  and  distributed  power  markets.  I  have been
privileged  to  make  an impact for NREL and the U.S. DOE during recent times of
heightened  focus  on energy security, climate change and the environment, and I
look  forward  to  applying  this  experience  in  my  new  role."

                                 MORE-MORE-MORE



COPAN APPOINTED VP AND CTO OF CLEAN DIESEL TECHNOLOGIES, INC
Page 2-2-2

     Copan  received  his  Ph.D. in Physical Chemistry from Case Western Reserve
University,  and his undergraduate degrees from CWRU are in chemistry and music.
He  is  member  of  the Board of the Licensing Executives Society (LES) and also
serves as member of the National Advisory Council to the U.S. Federal Laboratory
Consortium.

About Clean Diesel Technologies, Inc.
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     Clean Diesel Technologies, Inc. and its UK representative office, Clean
Diesel International LLC, is a developer of chemical and 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, 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.

     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,
including those detailed in the Company's filings with the Securities and
Exchange Commission, 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.