Borgwarner Inc.

Gerald Schall

Michael Stilgenbauer

Frank Scherrer

Matthias Ruh

Stefan Eisinger

Michael Loewenberg

Ingo Dietrich

Adnan Adilovic

Melanie Gabel

Menno Roder

Juergen Strelbitski

Dominik Kuss

Achim Klein

Thomas Ramb

Nico Kanoffsky

Rolf Sauerstein

Volker Paul

Roman Koenig

Stephan Weniger

Munevera Kulin

Andreas Kiefer

Russell Fish

Daniela Cempirkova

Alexandra Ziegler

Steffen Bereswill

A waste gate component for a turbo charger made of a ferritic steel including C, Cr, Ni, Nb, V, Mn, and optionally Si, and Ti as main alloying elements.

Ferritic steel for turbochargers

The present disclosure relates to a novel iron-based austenitic alloy for a turbocharger housing and to methods of its preparation.

Austenitic alloys for turbochargers

The present invention relates to a waste gate component for a turbo charger comprising an alloy comprising about 30 to about 42 wt.-% Ni, about 15 to about 28 wt.-% Cr, about 1 to about 5 wt.-% Cr, about 1 to about 4 wt.-% Ti, and at least about 20 wt.-% Fe, and to processes for preparing such a waste gate component.

Wastegate component comprising a novel alloy

Turbocharger components comprising a relatively light-weight nicked-based superalloy having an amount of &#x3b3;'-phase domains that is greater than 40% after aging the component at 1000&#xb0; C. for 300 hours.

Alloys for turbocharger components

A turbine arrangement for an exhaust gas turbocharger includes a turbine housing, a turbine wheel that is arranged in the turbine housing and has an axis of rotation, and a variable turbine geometry arrangement (VTG arrangement). The VTG arrangement includes a bearing ring, a disc, multiple vanes rotatably mounted in the bearing ring, and a contour sleeve that is coupled with the disc. The turbine housing comprises an axial stop, against which the contour sleeve stops in order to secure the VTG arrangement in an axial direction within the turbine housing.

Turbine arrangement for an exhaust gas turbocharger

An exhaust-gas turbocharger () having a compressor () which has a compressor housing (); a turbine () which has a turbine housing (); and a compressor-side and/or turbine-side charge pressure regulating device () which has a shut-off element () which opens or closes a flow opening (). The shut-off element () is in the form of a slide which is mounted on a guide () so as to be longitudinally displaceable along a longitudinal central line (LM) of the guide (), and the flow opening () is arranged at least substantially at a right angle (&#x3b1;) with respect to the longitudinal central line (LM) of the guide ().

Exhaust-gas turbocharger

An exhaust-gas turbocharger (), with a turbine housing () which has a turbine housing inlet () and a turbine housing outlet () for exhaust gas, and which has a wastegate duct () between the turbine housing inlet () and the turbine housing outlet (), and a flap arrangement () comprising a pivotable flap lever (), a flap plate (), which is connected to the flap lever (), for opening and closing the wastegate duct, and having a spring element () which is arranged between the flap lever () and a disc () fastened to the flap plate (). The spring element () has an outer circumferential region () which is supported on a sliding contact surface (), which is of curved form, of the disc ().

A TiAl alloy comprising the elements C, Si, B, Al and Ti, wherein a C fraction is &#x2264;0.5 wt %, an Si fraction is 0.05-2.5 wt %, a B fraction is &#x2264;0.4 wt % and an Al fraction is 25-43 wt %, in each case in relation to the total weight of the alloy.

TiAl alloy, in particular for turbocharger applications, turbocharger component, turbocharger and method for producing the TiAl  alloy

A process for producing a turbine rotor (), which has, as joining partners, a turbine wheel () made of TiAl and a shaft () produced from steel, with the following process steps: providing the turbine wheel (); providing a solder; providing the shaft (); and connecting the turbine wheel () and the shaft () by electron beam soldering by means of an electron beam ().

Process for producing a turbine rotor

A turbine wheel () of an exhaust-gas turbocharger (), formed from a titanium aluminide material, having a wheel back () which is of closed configuration as viewed from an axial direction (A) and which has an outer contour (), a hub () which extends from the wheel back () and which tapers along the axial direction (A), and a multiplicity of turbine blades () which extend from the wheel back () and from the hub () and which blades extend outward in a radial direction (R), as far as a connection region outer diameter (DAB) at least in a connection region (). The wheel back () has, in an outer region () adjoining the connection region (), a wheel back outer diameter (DRR) which is greater than or equal to the connection region outer diameter (DAB).

Turbine wheel of an exhaust-gas turbocharger

An exhaust-gas turbocharger (), with: a turbine housing () which has a turbine housing inlet () and a turbine housing outlet () for exhaust gas, and which has a wastegate duct between the turbine housing inlet () and the turbine housing outlet (), and a flap arrangement () comprising a pivotable flap lever (), a flap plate (), which is connected to the flap lever (), for opening and closing the wastegate duct, and having a spring element () which is arranged between the flap lever () and a disc () fastened to the flap plate (). The spring element () has an outer circumferential region () which is supported on a sliding contact surface (), which is of curved form, of the flap lever ().

The invention relates to a compressor wheel for a turbocharger, in particular in combination with a diesel engine, and to an exhaust gas turbocharger comprising such a compressor wheel.

Turbocharger and compressor wheel therefor

A component for turbocharger applications, in particular in diesel engines, made of an iron-based alloy having an austenitic base structure which has a carbide structure.

Turbocharger and a component therefor

A heat resistant super alloy suffices the following conditions: Such an alloy is preferably used for turbine wheels and particularly for turbochargers.

Heat resistant super alloy and its use

The invention relates to a multistep turbocharger arrangement () for an internal combustion engine with a high-pressure step (), with a low-pressure step () which can be brought into operative connection to the high-pressure step () over a fluid passage system () which can be opened and closed, and with a control unit () for controlling the operative connection between the high-pressure step () and the low-pressure step (), wherein the control unit () and the fluid passage system () are integrated in an engine exhaust manifold () which is disposed between the high-pressure step () and the low-pressure step ().

Growing community of inventors

Bobenheim-Roxheim, Germany

Gerald Schall