A planetary gearbox system with a ring gear, a sun gear, a carrier and planetary gears as parts in a geared aircraft turbofan engine, with one static part of the parts being in rest under nominal operation and with a kinematic switch device for decoupling the static part to become a rotatable part or with a kinematic switch device for coupling the rotatable part to become a static part. The invention also relates to a method for operating a planetary gearbox system.

Limited slip differentials (LSD), methods for making and methods for using such LSDs, and motor vehicles employing an LSD. An LSD for a motor vehicle includes a differential casing that drivingly connects to the driveshaft, and two side gears rotatably mounted inside the casing. Each side gear drivingly connects to a respective axle shaft. One or both side gears includes a respective friction surface. One or more pinion gears are mounted inside the casing and meshingly engaged with the side gears. One or more friction plates are movably mounted inside the casing to selectively engage with and disengage from a friction surface. A centrifugal spring mass, which is mounted to one of the pinion gears, includes circumferentially spaced springs that expand responsive to a predetermined disparity in rotational speed between the side gears and thereby urge the friction plate(s) into engagement with the friction surface(s).

Disclosed are limited slip differentials (LSD), methods for making and methods for using such LSDs, and motor vehicles employing an LSD. An LSD for a motor vehicle is disclosed that includes a differential casing that drivingly connects to the driveshaft, and two side gears rotatably mounted inside the casing. Each side gear drivingly connects to a respective axle shaft. One or both side gears includes a respective friction surface. One or more pinion gears are mounted inside the casing and meshingly engaged with the side gears. One or more friction plates are movably mounted inside the casing to selectively engage with and disengage from a friction surface. A centrifugal spring mass, which is mounted to one of the pinion gears, includes circumferentially spaced springs that expand responsive to a predetermined disparity in rotational speed between the side gears and thereby urge the friction plate(s) into engagement with the friction surface(s).

The present invention relates to an actuating device for a clutch having a stator device, a rotor device which is rotatable in relation to the stator device and a carriage device which is movable to a limited extent in an axial direction in relation to the rotor device and which supplies tensile and thrust forces, which is operatively connected to a push-pull device that is designed to exert tensile and thrust forces on a lever element of the clutch, where the push-pull device has at least one pull element and at least one push element, between which the lever element can be accommodated, and which are connectible to one another, as well as to a clutch having an actuating device, an electric drive module having a clutch, and a method for installing a clutch having an actuating device.

The present invention relates to an actuating device for a clutch having a stator device, a rotor device which is rotatable in relation to the stator device and a carriage device which is movable to a limited extent in an axial direction in relation to the rotor device and which supplies tensile and thrust forces, which is operatively connected to a push-pull device that is designed to exert tensile and thrust forces on a lever element of the clutch, where the push-pull device has at least one pull element and at least one push element, between which the lever element can be accommodated, and which are connectible to one another, as well as to a clutch having an actuating device, an electric drive module having a clutch, and a method for installing a clutch having an actuating device.

A clutch includes a first clutch part connected to a drive shaft, a second clutch part connected to an output shaft and a pressure element arranged to engage the first and second clutch parts, wherein a reinforcement mechanism is provided in a force flow zone between the pressure element and the second clutch part, wherein the mechanism has first and second ramps to transmit a biasing force for pressing the pressure element against the first clutch part.

A clutch includes a first clutch part connected to a drive shaft, a second clutch part connected to an output shaft and a pressure element arranged to engage the first and second clutch parts, wherein a reinforcement mechanism is provided in a force flow zone between the pressure element and the second clutch part, wherein the mechanism has first and second ramps to transmit a biasing force for pressing the pressure element against the first clutch part.

A hybrid drive module for a motor vehicle having a housing, an electric machine with a rotatable rotor and a stator fixed with respect to rotation relative to the housing, and a clutch. A first half of the clutch is connected to a hub, and a second half of the clutch is connected to the rotor. The rotor is rotatably mounted at the hub via a first rolling element bearing. The hub is rotatably mounted via a second rolling element bearing at a bearing shield connected to the housing. A supporting of axial forces on both sides is carried out between the rotor and hub via the first rolling element bearing and between the hub and bearing shield via the second rolling element bearing. Also disclosed is a motor vehicle powertrain with a hybrid drive module.

A hybrid drive module for a motor vehicle having a housing, an electric machine with a rotatable rotor and a stator fixed with respect to rotation relative to the housing, and a clutch. A first half of the clutch is connected to a hub, and a second half of the clutch is connected to the rotor. The rotor is rotatably mounted at the hub via a first rolling element bearing. The hub is rotatably mounted via a second rolling element bearing at a bearing shield connected to the housing. A supporting of axial forces on both sides is carried out between the rotor and hub via the first rolling element bearing and between the hub and bearing shield via the second rolling element bearing. Also disclosed is a motor vehicle powertrain with a hybrid drive module.