Borgwarner Inc.

Sascha Weiske

Sascha Karstadt

Michael Daniel Cola

Uwe Tomm

Mehul Sonigra

Patric Hoecker

Ahmet Coksen

Stefan Muenz

Waldemar Henke

Marc Gugau

Gerd Spinner

Juergen Werner

Cathrin Bergner

Aleksandar Vuletic

Frank Kruse

A cartridge for use in a pulse energy enhanced turbine of a turbocharger. At least first and second fixed separating blades () are provided between a nozzle ring () and a disk (), the separating blades () maintaining separation of exhaust gas flows through a guide grid between a divided volute and a turbine wheel (). Exhaust pulsation energy from different cylinders or cylinder groups of an engine or engine bank are kept separated up to the turbine wheel, so that the turbine wheel reacts to individual pulses of exhaust gas flow from engine exhaust ports.

Cartridge for pulse-separated variable turbine geometry turbochargers

A compressor with a compressor housing in which a compressor wheel is arranged. The compressor additionally includes a cartridge which is arranged in the compressor housing in the area of a compressor inlet. The cartridge is designed to variably change the cross section of the compressor inlet.

Compressor with variable compressor inlet

A dual volute turbocharger for use with an internal combustion engine includes a valve for controlling exhaust gas flow to a turbine housing interior of the dual volute turbocharger. The dual volute turbocharger also includes a first volute and a second volute each adapted for fluid communication with the internal combustion engine. The dual volute turbocharger further includes a wall separating the first and second volutes and a valve seat. The valve seat and the wall collectively define a valve cavity. The valve is movable between a closed position and an open position. The valve and the wall of the turbine housing collectively define a first cross-sectional flow area. The valve and the valve seat collectively define a second cross-sectional flow area. A method of controlling the valve of the dual volute turbocharger is also disclosed.

Method of controlling a valve of a dual volute turbocharger

A system includes a dual volute turbocharger and a controller. The dual volute turbocharger includes a turbine housing. The turbine housing includes a wall, a valve seat, and an interior surface defining a turbine housing interior, a first volute, a second volute, and a turbine housing outlet. The dual volute turbocharger also includes at least one valve member engageable with at least one of the valve seat and the wall of the turbine housing. The at least one valve member and the wall of the turbine housing collectively define a first cross-sectional flow area. The at least one valve member and the valve seat of the turbine housing collectively define a second cross-sectional flow area. The controller is adapted to control the at least one valve member to have an area ratio constant operating range according to a brake-specific fuel consumption of the internal combustion engine.

Dual volute turbocharger and system including the same

A multi-flow exhaust gas turbocharger () comprising a turbine (), a turbine wheel, a first flow () and a second flow (), a bypass line () for bypassing the turbine wheel, a bypass valve unit () for adjusting the size of a bypass exhaust gas flow through the bypass line (), and comprising a flow connection unit () for adjusting an extent of the connection of exhaust gas flows into the flows (), characterized in that the bypass valve unit () and the flow connection unit () can be actuated in a mechanically coupled way by means of a coupling unit ().

Exhaust gas turbocharger with combined adjustment device for bypass valve and flow connection

Growing community of inventors

Weilerbach, Germany

Sascha Weiske