Exhibit 99.1

NEWS  RELEASE FOR SEPTEMBER 8, 2003 AT 2:30 AM EDT AND 7:30 AM GMT (LONDON TIME)
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Contact:     Allen  &  Caron Inc         or      Clean Diesel Technologies, Inc.
             Jay F. McKeage (investors)          James M. Valentine, President
             (212)  691-8087                     David  W.  Whitwell,  CFO
             jay@allencaron.com                  (203)  327-7050
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             Len  Hall  (media)
             (949)  474-4300
             len@allencaron.com
             ------------------

       CLEAN DIESEL TECHNOLOGIES SIGNS COMMITMENT LETTERS TO RAISE $3.8 M

        FUNDS WILL SUPPORT EPA AND CARB VERIFICATION OF JOINT TECHNOLOGY
                          FOR DIESEL EMISSIONS CONTROL

STAMFORD,  CT  (September  8,  2003)   Clean  Diesel  Technologies,  Inc.  (CDT)
(EBB:CDTI & AIM:CDT/CDTS)  announced today that it has signed commitment letters
with  a strategic partner  and several current UK based CDT shareholders for the
issue  of $3.8 Million of CDT's common stock at a price of $1.63 per share.  CDT
expects  to  complete  the  private  placement  on  September  26,  2003.

     The  new CDT common shares will be issued in reliance on the exemption from
registration under Regulation S under the US Securities Act for offshore private
placements.  Because  the  new shares are subject to transfer restrictions for a
period  of  time, they may not be resold to persons in the US or US persons, but
may  otherwise be traded in the UK without other restrictions.       Application
for the shares to trade on the Alternative Investment Market (AIM) of the London
stock  exchange  will  be made and the shares are expected to trade on AIM under
the  ticker  symbol  CDTI.

     The proceeds of the fund raising will be used to complete verification with
EPA  and  the  California  Air  Resources  Board (CARB) of a catalyzed wire mesh
filter  (CWMF)  and  the Company's patented Platinum Plus(R) fuel borne catalyst
(FBC),  as  well  as  general  operating  purposes.  Previous tests at Southwest
Research  Institute  (SwRI)  of  the  FBC/CWMF  system generated over 65 percent
particulate reduction and in excess of 75 percent reduction of hydrocarbons (HC)
and  carbon  monoxide  (CO)  while minimizing the formation of unwanted nitrogen
dioxides  (NO2).  The  Company is in the process of obtaining the required 1,000
hours  of  in-field use for final verification testing expected to take place in
fourth  quarter  2003.

     James Valentine, CDT President & COO, commented, "These funds will allow us
to  complete  the  required field trials and third party testing required by EPA
and  CARB for verification, as well as to expand our sales and technical support
functions  with  key  corporate  customers.  Once  verified,  the combination of
FBC/CWMF  will  provide  a strong Level 2 control technology under CARB's diesel
retrofit  protocol."


                                 MORE-MORE-MORE



CLEAN  DIESEL  TECHNOLOGIES  SIGNS  COMMITMENT  LETTERS  TO  RAISE  $3.8  M
Page  2-2-2


     CDT  recently  completed  testing to support verification with both the EPA
and CARB of its Platinum Plus Purifier System, consisting of CDT's Platinum Plus
FBC  and  a  lightly-catalyzed diesel oxidation catalyst (DOC). Tests at SwRI of
the  FBC/DOC  system  resulted  in  over  45  percent  reduction  in particulate
emissions which meets a solid Level 1 control with CARB's retrofit program.  The
FBC/DOC  system  is  now listed on the EPA's verified technologies website, with
final  reduction  percentages  expected  to  be posted in the next 30 to 60 days
after  the  EPA  reviews  all  of  the  data.

     Both  the  FBC/DOC  and  FBC/CWMF  systems  will  be targeted at school bus
fleets,  delivery  vehicles  and  refuse  trucks.  They  will provide lower cost
solutions  to  end  users  without the problems of excessive NO2 generation from
traditional  heavily  catalyzed  systems.


About  Clean  Diesel  Technologies,  Inc.
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     Clean  Diesel  Technologies,  Inc.  is  a  specialty  chemical company with
patented products that reduce emissions from diesel engines while simultaneously
improving  fuel  economy  and  power.  Products  include  Platinum  Plus(R) fuel
catalysts  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 contact Clean Diesel Technologies directly, or visit
their  web  site  at  www.cdti.com.
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     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.
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