Thyssenkrupp Presta Teccenter Ag

Linamar Gmbh

Koenig & Bauer-aktiengesellschaft

Thyssenkrupp Dynamic Components Teccenter Ag

Mario Lindner

Bernd Mann

Jonathan Heywood

Daniel Paul

Uwe Dietel

Jürgen Meusel

Juergen Meusel

Uwe Grossgebauer

Marcel Weidauer

Stefan Singer

Sebastian Wappler

Anton Lupei

Michael R Biga

Allen W Hale

Markus Haertel

Jan Krassler

Matthias Engelmann

Matthias Förster

Matthias Vogt

Frank Brosch

An engine balance shaft () for an internal combustion engine () is provided having reduced total mass and rotational inertia while having sufficient bending stiffness and sufficient unbalance mass. The balance shaft () is formed by fixedly coupling a counterweight (), a front bearing journal (), a rear bearing journal (), a tail piece (), and a nose piece () to a hollow tube (). The hollow tube () is hydroformed to expand the diameter of the tube and fasten the desired components to the tube ().

Hydroformed balance shaft

A method of joining a functional module comprises the steps of providing a frame structure that defines a bearing channel with at least one circumferentially closed bearing seat; providing at least two attachment parts; providing a hollow shaft that comprises at least one support section for the at least two attachment parts, wherein the attachment parts comprise a mounting seat that is adapted to a support section; feeding the attachment parts in the bearing channel in a first feeding direction; feeding the hollow shaft in the bearing channel in a second feeding direction, wherein the hollow shaft is inserted into the respective mounting seat of the at least two attachment parts; and, subsequent to the feeding of the attachment parts and the hollow shaft in the bearing channel, at least sectionally widening the hollow shaft for a torsionally rigid fixation of the at least two attachment parts with their mounting seats at the respective support section of the hollow shaft.

Method for joining a functional module, and functional module

A method concerns producing a cam profile of a cam pack with at least two cam elements that can be adjusted relative to each other. The camshaft may comprise an outer shaft, a rotatable inner shaft, a fixed cam element connected to the outer shaft, and an adjustment cam element connected to the inner shaft. The method may comprise processing an adjustment cam contour by a continuous diameter reduction of a segment of the adjustment cam base circle, wherein the adjustment cam base circle is reduced to a diameter that is smaller than a fixed cam nominal circle diameter minus a doubled adjustment cam base circle tolerance. The method may comprise processing a fixed cam contour by reducing a fixed cam contour protrusion in a region between a transition point and a processing point. Upon reaching the transition point a tapping element for converting a revolving motion of the cam elements into a linear motion of the valves is transferred from the fixed cam element to the adjustment cam element.

Method for producing a cam profile of a cam pack of a camshaft

A bearing apparatus for mounting a camshaft in a cylinder head of an internal combustion engine may include a bearing element that surrounds a bearing ring in which the camshaft is rotatably mounted or mountable. The bearing element may be made of a first material whose expansion coefficient is greater than an expansion coefficient of a second material of which the bearing ring is made. An outer surface of the bearing ring may include a contour that engages in a form-fitting manner with a mating contour formed on an inner surface of the bearing element that surrounds the bearing ring. The contouring formed by the contour and the mating contour may form retaining structures that brace against one another in instances of thermal expansion.

Hybrid bearing block for a camshaft

A camshaft for actuating the gas exchange valves of an internal combustion engine. The camshaft includes a camshaft tube, a hydraulic camshaft adjuster, a valve for controlling the hydraulic fluid supplied to the camshaft adjuster and an actuation device, arranged in the interior of the camshaft tube, for actuating the valve. The actuation device is secured against displacement in the axial direction. The camshaft is light-weight and functional elements in addition to the actuation device and optionally the valve can be integrated into the interior of the camshaft. It should furthermore be possible to arrange an oil or vacuum pump at the end of the camshaft opposite the camshaft adjuster, the pump being drivable by the camshaft. The actuation device is designed as an electromagnetic, piezoelectric or electrical actuator and is connected to the camshaft tube such that they rotate together.

Camshaft with camshaft adjuster

A camshaft arrangement having two shafts disposed coaxially, one inside the other. A connecting element is inserted into a receptacle in the inner shaft, such that a part of the connecting element protrudes out of the receptacle, and that the protruding part is inserted at least partially in a recess, the recess is designed to be open at least toward an end face of the inner shaft cam, and that the protruding part has at least two opposite side surfaces contacting two corresponding inner surfaces of the recess of each inner shaft cam with a force fit. The further connecting element is designed as a radial pin pressed through a hole in the inner shaft cam element into a receptacle of the inner shaft.

Adjustable camshaft arrangement

Growing community of inventors

Chemnitz, Germany

Mario Lindner