Robert Boschgmbh

Ianislav Krastev

Helmut Schneider

Werner Hess

Gerhard Wetzel

Christof Ott

Ngoc-Thach Nguyen

Oliver Gerundt

Lothar Krauter

Ingo Drewe

Wael Mohamed

Tobias Schlittenbauer

Ruediger Block

Rudolf Eydam

Steffen Strauss

Richard Grabenbauer

Ralf Diekmann

Nils Steinbach

Michael Wolfgang Goerdeler

Uwe Kulow

Igor Schleining

Michael Klimenko

Francisco Tapia Alvarez Icaza

Daniel Schwartz

Carolin Breitinger

The invention relates to a multi-speed planetary transmission (). The multi-speed planetary transmission () comprises a driveshaft (), which comprises a sun gear () and a ring gear (), and an output shaft (), which comprises a planet carrier with at least one planet gear (). The drive shaft () and the output shaft () can be connected together or separated from each other by means of a clutch (). The multi-speed planetary transmission () has a freewheel (), via which a shift is carried out between a first transmission ratio i_1 and a second transmission ratio i_2 under a load using the clutch ().

Multi-speed planetary transmission for a vehicle with at least one electric machine

The invention relates to a power-shift multi-speed transmission (), comprising at least one stepped planet gear (), which revolves around a first sun gear () and in a first ring gear (). The first ring gear () is held on a lockable freewheel (). A first planet gear step () of the stepped planet gear () revolves in the first ring gear (), while a second planet gear step () revolves in a second ring gear (), with which at least one brake () is associated.

Power-shift multi-speed transmission

The invention relates to a power-shift multi-speed transmission () provided in the power train of a vehicle, comprising at least one sun gear (), at least one stepped planetary gear (), at least one ring gear (), and an input shaft () and an output shaft (). The power-shift multi-speed transmission () can be shifted into a shift mode of a first speed or into a shift mode of a second speed and vice versa by means of the at least one stepped planetary gear (). A first brake () is associated with a first ring gear () and a second brake () is associated with a second ring gear (). Depending on the actuation of these brakes, in the shift modes there is at least one torque flow under acceleration, or at least one torque flow on overrun, through the power-shift multi-speed transmission ().

A method for manufacturing a hydraulic device is described, in which at least one hydraulic channel and at least one connection are manufactured and/or hydraulically connected to one another, the hydraulic device being manufactured from at least two plates, and the plates being formed and connected to one another with the aid of the processes of cold forming, deep drawing, punching, punch riveting, and/or clinching.

Method for manufacturing a hydraulic device

A device is described for controlling a hydraulic accumulator of a hydraulic system, for example a vehicle transmission, having a valve device which may connect and disconnect an accumulator-side port of the device to and from a system-side port, the valve device including at least one first check valve which is situated hydraulically between the accumulator-side port and the system-side port, and which is blocking in the direction of the system-side port, the valve device also including an electrically actuated control valve which is situated between a control port of the first check valve and the accumulator-side port in such a way that the control valve may hydraulically unblock the first check valve, using the pressure prevailing at the accumulator-side port.

Device for controlling a hydraulic accumulator of a hydraulic system

Growing community of inventors

Ludwigsburg, Germany

Ianislav Krastev