Firma Carl Freudenberg

Chris Andrews

Klaus Dohring

Michael Brummer

Tom Boardman

A method for closing a non-circular opening in a plastic intake pipe of an internal combustion engine with a cover having a shape adapted to that of the opening includes the step of introducing the cover through the opening from outside the pipe by tilting the cover relative to the opening. The cover is then tilted within the plastic intake pipe to such an extent that the cover completely covers both the opening from the inside in a form-locking manner and an edge region of the plastic intake pipe which surrounds the opening.

Plastic intake pipe

An intake manifold for an internal combustion engine having a cylinder head is disclosed. The intake manifold includes at least one intake pipe with an intake flange for leak-free attachment of the manifold to the cylinder head by way of a sealing element. A bypass line is provided for feeding a secondary gas into the intake opening of the internal combustion engine. The secondary gas is fed into the bypass line through a connection, preferably a hose connection. The bypass line is formed by a groove in the intake flange which is open in the direction of the cylinder head and delimited on one side by the intake flange and on the other side by a sealing element. The connection is connected to one end of the groove, and the intake opening is connected to the other end of the groove.

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New London, NH, United States of America

Chris Andrews