Patent ID: 6925992

Claim:
A device for recirculating a part of the exhaust gases from an exhaust pipe ( 6 , 9 ) of a diesel engine ( 1 ) to an inlet of the engine, a recirculation conduit ( 10 ) being provided for diverting the exhaust gases from the exhaust pipe ( 6 , 9 ) and directing them to a controllable valve device ( 12 ) arranged between the engine and an air intake ( 2 ) thereof for enabling supply of air/recirculated gases in a desired relation to a combustion chamber of the engine ( 1 ), the valve device comprising dampers ( 20 , 21 ) arranged in inlet channels ( 17 , 18 ) for the recirculated exhaust gases and air respectively, characterized in that the valve device is arranged to always maintain at least one of the dampers open, a drive motor ( 22 ) common to the dampers is arranged to close the other of the dampers ( 20 , 21 ), and both dampers ( 20 , 21 ) in a normal position are spring loaded ( 28 , 29 ) to an open position.