POWER OF ATTORNEY

      Know  all  by  these  presents that the undersigned hereby constitutes and
appoints  each,  David Shea, and Alfred Palomino, or any of them signing singly,
and  with  full  power  of  substitution,  the  undersigned's  true  and  lawful
attorney-in-fact to:

      (1)   prepare,  execute in the undersigned's name and on the undersigned's
            behalf,  and  submit  to the U.S. Securities and Exchange Commission
            (the  "SEC")  a Form ID, including amendments thereto, and any other
            documents  necessary  or  appropriate  to obtain codes and passwords
            enabling  the undersigned to make electronic filings with the SEC of
            reports required by Section 16(a) of the Securities and Exchange Act
            of 1934 or any rule or regulation of the SEC;

      (2)   execute  or  and  on behalf of the undersigned, in the undersigned's
            capacity as an officer and/or director of Clean Diesel Technologies,
            Inc.  (the  "COMPANY"), Forms 3, 4, and 5 in accordance with Section
            16(a)  of  the  Securities  and  Exchange  Act of 1934 and the rules
            thereunder, as amended;

      (3)   do and perform any and all acts for and on behalf of the undersigned
            that  may be necessary or desirable to complete and execute any such
            Form  3,  4,  or 5, complete and execute any amendment or amendments
            thereto,  and  timely  file  such  form  with  the SEC and any stock
            exchange or similar authority; and

      (4)   take  any other action of any type whatsoever in connection with the
            foregoing  that,  in the opinion of such attorney-in-fact, may be of
            benefit  to,  in  the  best interest of, or legally required by, the
            undersigned, it being understood that the documents executed by such
            attorney-in-fact  on  behalf  of  the  undersigned, pursuant to this
            Power  of  Attorney,  shall  be  in such form and shall contain such
            terms  and  conditions  as  such attorney-in-fact may approve in his
            discretion.

      The undersigned hereby grants to each such attorney-in-fact full power and
authority  to  do and perform each and every act and thing whatsoever requisite,
necessary, and proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could  do  if personally present, with full power of substitution or revocation,
hereby   ratifying  and  confirming  all  that  such  attorney-in-fact,  or  his
substitute  or  substitutes,  shall lawfully do or cause to be done by virtue of
this Power of Attorney and the rights and powers herein granted. The undersigned
acknowledges  that  no such attorney-in-fact, in serving in such capacity at the
request  of  the  undersigned,  is  hereby  assuming,  nor is the Company hereby
assuming, any of the undersigned's responsibilities to comply with Section 16 of
the Securities Exchange Act of 1934, as amended.

      This  Power  of  Attorney  shall remain in full force and effect until the
undersigned  is  no longer required to file Form 3, 4 and 5 reports with respect
to  the  undersigned's  holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing delivered
to the foregoing attorneys-in-fact.

      IN  WITNESS  WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 18th day of December, 2015.

                                   /s/ Mungo Park
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                                   Signature

                                   Mungo Park
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