SIGNATURES AND CERTIFICATES
Exhibit 31(a)
I, Bernhard Steiner, certify that:
1. I have reviewed the Annual Report on Form 10-K (the "report") of Clean
Diesel Technologies Inc.:
2. Based on my knowledge, this report does not contain any untrue statement
of a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements were
made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects the
financial condition, results of operations and cash flows of the registrant as
of and for the periods presented in this report;
4. The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15 (e) and 15d-15 (e)) and internal control over
financial reporting (as defined in Exchange Act Rules 13a-15 (f) and 15d-15 (f))
for the registrant and have:
a) Designed such disclosures controls and procedures or caused
such disclosure controls and procedures to be designed under our
supervision to ensure that material information relating to the
registrant, including its consolidated subsidiaries, is made
known to us by others within those entities, particularly during
the period in which this Report is being prepared; and
b) designed such internal control over financial reporting, or
caused such internal control over financial reporting to be
designed under our supervision, to provide reasonable assurance
regarding the reliability of financial reporting and the
preparation of financial statements for external purposes in
accordance with generally accepted accounting principles;
c) Evaluated the effectiveness of the registrant's disclosure
controls and procedures and presented in this report our
conclusions about the effectiveness of the disclosure controls
and procedures, as of the end of the period covered by this
report based on such evaluation; and
d) disclosed in this report any change in the registrant's
internal control over financial reporting that occurred during
the registrant's fourth fiscal quarter of 2004 that has
materially affected, or is reasonably likely to materially
affect, the registrant's internal control over financial
reporting; and
5. The registrant's other certifying officers and I have disclosed, based on
our most recent evaluation of internal control over financial reporting, to the
registrant's auditors and the audit committee of the registrant's board of
directors (or persons performing the equivalent functions):
a) All significant deficiencies and material weaknesses in the
design or operation of internal controls over financial
reporting, which are reasonably likely to adversely affect the
registrant's ability to record, process, summarize and report
financial information; and
b) Any fraud, whether or not material, that involves management
or other employees who have a significant role in the
registrant's internal control over financial reporting;
Date: March 29, 2005 By: /s/ Bernhard Steiner
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Bernhard Steiner
Director and Chief Executive Officer