CVT drive train
AssigneeSchaeffler Technologies AG & Co. KG
InventorBernhard Walter
Life of this patent
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Abstract
A CVT drive train having an input drive, a start-up element, a continuously variable variator, and a differential. A direct shifting stage bridges the variator and is connected directly to the input drive. The direct connection of the direct shifting stage to the input drive enables the direct shifting stage to be used advantageously independently of the start-up element and can be connected, for example, to a gear that is used in conventional CVT drive trains to drive a hydraulic pump.
Claims15
A continuously variable transmission (CVT) drive train, the CVT drive train comprising:
- an input drive;
- a torque converter;
- a continuously variable variator;
- a differential;
- a direct shifting stage that bridges the variator and that is connected to the input drive, wherein the direct shifting stage is configured to couple a pump gear to a spur gear of the differential via a switching device, wherein the pump gear is configured to drive a pump;
- and
- a torsional vibration damper positioned between the input drive and the torque converter, wherein an output of the torsional vibration damper is an input of the torque converter and is non-rotatably connected to the pump gear.
A continuously variable transmission (CVT) drive train, comprising:
- an input drive;
- a torque converter having a torque converter housing and including a lockup clutch and a decoupling clutch disposed within the torque converter housing;
- a continuously variable variator;
- a differential;
- a direct shifting stage that bridges the continuously variable variator, wherein the direct shifting stage is connected to the input drive via the torque converter housing, wherein the direct shifting stage is configured to couple a pump gear to a spur gear of the differential via a switching device, the pump gear being configured to drive a pump;
- and
- a torsional vibration damper positioned between the input drive and the torque converter, wherein an output of the torsional vibration damper is an input of the torque converter and is non-rotatably connected to the pump gear.
Dependencies are inferred from the claim text.