Patent ID: 7260929

Claim:
A secondary air delivery device for an internal combustion engine ( 10 ), comprising a secondary air charger ( 14 ) with a housing ( 47 ) including a compressor ( 15 ) and a turbine ( 16 ), the turbine ( 16 ) being driven ambient air flowing through the turbine ( 16 ) to an intake duct ( 6 ) as a result of a vacuum prevailing in the intake duct ( 6 ) of the internal combustion engine ( 10 ), and the turbine in turn driving the compressor ( 15 ) which delivers secondary air into the exhaust gas duct ( 12 ) of the internal combustion engine ( 10 ), said intake duct ( 6 ) including an intake air filter ( 4 ) for filtering air passing to the internal combustion engine, and a u-shaped air filter structure ( 45 ) having opposite side parts ( 61 ) provided in the secondary air charger ( 14 ) for filtering ambient air supplied to the compressor ( 15 ) and the turbine ( 16 ), said secondary air charger housing ( 47 ) including a frame structure ( 48 , 49 , 50 ) with side elements ( 48 , 49 ) defining a fitting space ( 60 ) and the air filter structure ( 45 ) being insertable into the fitting space ( 60 ) and having grooves ( 66 ) on the opposite side parts ( 61 ) for engagement with latching lugs of the frame structure ( 48 , 49 , 50 ).