Exhibit 23.2

          Consent of Independent Registered Public Accounting Firm


We consent to the incorporation by reference in the Registration Statements
(Forms S-8 No. 33-00000,  No. 33-33276 and No. 33-16939)  pertaining to the
1994  Incentive  Plan  of  Clean  Diesel  Technologies,  Inc.  and  to  the
incorporation  by reference  therein of our report dated  January 24, 2003,
with respect to the  financial  statements  of Clean  Diesel  Technologies,
Inc., as of December 31, 2002,  and for each of the two years in the period
ended  December 31, 2002  included in the Annual Report (Form 10-K) for the
year ended  December  31,  2003,  filed with the  Securities  and  Exchange
Commission.



                                                      /s/ Ernst & Young LLP

Stamford, Connecticut
July 1, 2004