Eberspächer Exhaust Technology Gmbh & Co. Kg

Purem Gmbh

Stefanos Varelis

Steffen Schmitt

Markus Birgler

Annika Stark

Georg Wirth

Annika Zeumer

Matthias Grün

Miljenko Novosel

Bernd Müller

Ralf Hölsch

Jan Pallmann

Milijenko Novosel

A method provides for manufacturing a flap carrier for an exhaust gas flap, especially for the exhaust gas stream of an internal combustion engine. The method includes providing a flap housing () and providing a stop ring (). The stop ring () is inserted into the flap housing () in a position corresponding to an installed position. The stop ring () is fixed to the flap housing (). Subsequently to fixing the stop ring () to the flap housing (), at least one shaft opening () for a pivot shaft carrying a flap diaphragm with at least one flap wing is inserted into the stop ring ().

Method for manufacturing a flap carrier for an exhaust gas flap

An exhaust gas flap, especially for the exhaust gas stream of an internal combustion engine, includes a flap tube (), a flap diaphragm (). The flap diaphragm () is carried in the interior of the flap tube () on a pivot shaft (), rotatable about a pivot axis (A). The flap diaphragm () has at least one flap diaphragm part () and a mounting area () enclosing the pivot shaft () in at least some areas. A wing stop () is provided at an inner circumferential area of the flap tube () in association with at least one flap diaphragm part (). A recess () at the flap diaphragm (), receiving a circumferential end area () of a wing stop (), is provided in at least one axial end area of the mounting area ().

Exhaust gas flap

A coupling device, for the rotary coupling of a pivot shaft of a flap diaphragm of an exhaust gas flap with a drive element, includes at least one coupling element () with a first coupling area () configured for coupling to the pivot shaft (), with a second coupling area () configured for coupling to the drive element () and with at least one connection area () connecting the first coupling area () to the second coupling area (). In the coupled state, the first coupling area () and the second coupling area () are prestressed in a direction towards one another or in a direction away from one another. The at least one coupling element () is formed with sheet material.

Coupling device for the rotary coupling of a pivot shaft of a flap diaphragm of an exhaust gas flap with a drive element

An exhaust gas flap, especially for the exhaust gas stream of an internal combustion engine, includes a flap tube () and a flap diaphragm () carried in an interior of the flap tube on a pivot shaft () rotatable about a pivot axis. A flap wing () is mounted on the pivot shaft () and a wing stop () is associated with the flap wing () on an inner circumferential area of the flap tube. The flap wing () has a mounting area () with uncurved mounting surfaces (). Opposing mounting surfaces () or/and a mounting recess () at the pivot shaft () provide an opposing mounting area that at least partially receives the flap wing mounting area () of the flap wing (), the opposing mounting area being provided on the outer circumferential area of the pivot shaft ().

An electric exhaust gas valve device () controls a flow cross section () of an exhaust pipe () of an exhaust system () of an internal combustion engine. The valve device includes an electric drive () driving a driven shaft () rotatingly about an axis of rotation (). An exhaust gas valve () has a drive shaft () aligned coaxially to and rotatable about the axis of rotation for controlling the cross section. A coupling device () transmits torques between the driven shaft and the drive shaft and includes a connection element connected to the drive shaft, a transmission element () connected to the driven shaft and the connection element with a prestressing spring () supported axially on the connection element and/or on the drive shaft as well as on the transmission element and axially driving the transmission element against the driven shaft to reduce thermal load.

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Leinfelden, Germany

Stefanos Varelis