0001140361-11-032758 SC 13G/A 1 20110614 20110614 ECP II INTERFUND L.P. (?EI II") ECP II MANAGEMENT L.P (?EM II LP") ECP II MANAGEMENT LLC (?EM II LLC") MARK J. DENINO (?DENINO") ROBERT E. KEITH, JR. (?KEITH") SCOTT B. UNGERER (?UNGERER") WILLIAM G. KINGSLEY (?KINGSLEY") CLEAN DIESEL TECHNOLOGIES INC 0000949428 3564 061393453 DE 1231 SC 13G/A 34 005-51147 11909749 4567 TELEPHONE ROAD SUITE 206 VENTURA CA 93003 805 639 9458 4567 TELEPHONE ROAD SUITE 206 VENTURA CA 93003 EnerTech Capital Partners II, L.P. 0001292175 233020217 DE 1231 SC 13G/A 435 DEVON PARK DR, BUILDING 700 WAYNE PA 19087 610-254-4141 435 DEVON PARK DR, BUILDING 700 WAYNE PA 19087 SC 13G/A 1 formsc13ga.htm ENERTECH SC 13G A 6-14-2011