Tenneco Gmbh

Heinrich Gillet Gmbh

Thomas Weidner

Andreas Steigert

Markus Geminn

Georg Reuther

Margit Roth

Michael Weidner

Rico Weinert

Marcel Womann

Alexander Schinko

Lan Huynh

Juergen Rickertsen

Karlheinz Reichling

Klaus Himmelstein

Joerg Tillmann

A valve flap device having at least one valve housing having a shaft comprising a bearing surface and a valve axis, the shaft being rotationally supported about the valve axis by means of the bearing surface in the valve housing. A bearing element having a sliding bearing surface, wherein the bearing surface of the shaft contacts the sliding bearing surface. A bearing housing provided on the valve housing, in which the bearing element is supported at least in the radial direction to the valve axis, wherein the bearing element has an outer surface contacting the bearing housing. The support of the shaft is intended to be sufficiently tightly sealed, even for gaseous media, while simultaneously ensuring precise and statically determinate support. To this end, the bearing element is designed as a separate component coupled to the bearing housing about the valve axis with respect to the circumferential direction, such that the relative position between the bearing element and the bearing housing does not change in the circumferential direction when the shaft is rotated.

Valve flap device

A method for encasing a body of an exhaust gas system with a housing which is wound around the body. Using a winding method, the body is placed in a loop formed by a belt-shaped conveyor element that can be driven in a conveyor device, wherein the conveyor element is seated against the outer casing face at a wrapping angle u of at least 270 degrees. Starting with a first edge, the metal strip is then introduced in a conveyor device between the body and the conveyor element, is drawn into the gap between the body and the conveyor element and is bent around the body until the body is encased at least twice by the metal strip.

Method for encasing a body of an exhaust gas system

An exhaust gas systemfor an internal combustion piston engine, having an exhaust manifoldhaving a plurality of manifold tubes Z-Zand an exhaust gas fitting, and an exhaust gas line elementhaving an exhaust gas pipe fittingthat can be connected to the exhaust gas fittingby the exhaust gas pipe fitting. The exhaust gas manifoldand at least the exhaust gas pipe fittingof the exhaust gas line elementeach have a partition, each forming two separate exhaust gas channels A, A, A, Aeach having a flow axis S, S, and comprising an end facerunning transverse to the flow axis Sin the area of the fitting, wherein the edge segment R, the edge segment R, and/or the core segment K of the exhaust manifoldat least partially contact the exhaust gas pipe fittingin the axial direction when the internal combustion piston engine is in the warm state.

Exhaust gas system

A process for producing exhaust gas manifolds is provided, which have a flange for fastening to the cylinder head of an internal combustion engine, manifold pipes for leading off the exhaust gases flowing from the cylinders, and a pipe connector, wherein the pipe connector has openings for the manifold pipes. In accordance with the invention, the pipe connector is designed with reinforced openings. Then the ends of the manifold pipes are introduced into the openings and expanded. In this process, the pipe ends undergo plastic deformation, and the pipes are connected gas-tight.

Processes for producing exhaust gas manifolds

An exhaust system is disclosed that has pipes and a housing, through which exhaust fumes of an internal combustion engine flow. The exhaust fumes generate a condensate, at least in part and/or in certain areas. To prevent the corrosion of sheet metal by the condensate, a sacrificial anode, which can be made of zinc and/or magnesium, is provided at least in one of the areas where the condensate collects.

Exhaust system

Growing community of inventors

Edenkoben, Germany

Thomas Weidner