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US 12,012,004 B2Granted
Drive train for a vehicle
AssigneeKNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
InventorDaniel Geis-Esser
Life of this patent
Estimating the term…
Abstract
A drive train for a vehicle includes at least one transmission having a primary input shaft designed to be connected to a primary drive, a secondary input shaft designed to be connected to a secondary drive, an output shaft designed to output power that has been introduced into the at least one transmission by the primary input shaft, and a planetary gearbox designed to continuously variably set a transmission ratio between the primary input shaft and the output shaft on the basis of the rotational speed of the secondary input shaft. The invention further relates to a vehicle having a drive train of this type, to a method for controlling a drive train of this type, and to a computer program product.
Claims17
A drive train for a vehicle, comprising:
- at least one transmission, the at least one transmission including
- a primary input shaft configured to connected to a primary drive,
- a secondary input shaft configured to be connected to a secondary drive,
- an output shaft configured to output power introduced into the at least one transmission by the primary input shaft,
- a planetary gear train configured to steplessly adjust a translation ratio between the primary input shaft and the output shaft in response to changes in a rotation speed of the secondary input shaft, and
- an at least selectively-actuatable connection configured to interrupt a connection between the planetary gear train and the primary input shaft of the at least one transmission, and
- an at least selectively-actuatable connection configured to interrupt a connection between the planetary gear train and the secondary input shaft of the at least one transmission, wherein
- the primary input shaft is connected directly or via intermediate elements to a sun gear of the planetary gear train to feed a mechanical power via the primary input shaft onto the sun gear of the planetary gear train to be transferred via the planetary gear train to the output shaft,
- the secondary input shaft is connected directly or via intermediate elements to a carrier shaft of the planetary gear train to hold the carrier shaft at a standstill or stationary, or to change the rotation speed of the carrier shaft via the secondary drive, and
- the output shaft is connected directly or via intermediate elements to a ring gear of the planetary gear train.
7 more elements
A vehicle having a drive train, comprising:
- at least one transmission, the at least one transmission including
- a primary input shaft configured to connected to a primary drive,
- a secondary input shaft configured to be connected to a secondary drive,
- an output shaft configured to output power introduced into the at least one transmission by the primary input shaft,
- a planetary gear train configured to steplessly adjust a translation ratio between the primary input shaft and the output shaft in response to changes in a rotation speed of the secondary input shaft,
- an at least selectively-actuatable connection configured to interrupt a connection between the planetary gear train and the primary input shaft of the at least one transmission, and
- an at least selectively-actuatable connection configured to interrupt a connection between-the planetary gear train and the secondary input shaft of the at least one transmission, wherein
- the output shaft of the at least one transmission is connected to at least one wheel of the vehicle directly or via intermediate elements,
- the primary input shaft is connected directly or via intermediate elements to a sun gear of the planetary gear train to feed a mechanical power via the primary input shaft onto the sun gear of the planetary gear train to be transferred via the planetary gear train to the output shaft,
- the secondary input shaft is connected directly or via intermediate elements to a carrier shaft of the planetary gear train to hold the carrier shaft at a standstill or stationary, or to change the rotation speed of the carrier shaft via the secondary drive, and
- the output shaft is connected directly or via intermediate elements to a ring gear of the planetary gear train.
8 more elements
A method for controlling a drive train having at least one transmission, the at least one transmission including
- a primary input shaft configured to connected to a primary drive,
- a secondary input shaft configured to be connected to a secondary drive,
- an output shaft configured to output power introduced into the at least one transmission by the primary input shaft,
- a planetary gear train configured to steplessly adjust a translation ratio between the primary input shaft and the output shaft in response to changes in a rotation speed of the secondary input shaft,
- an at least selectively-actuatable connection configured to interrupt a connection between the planetary gear train and the primary input shaft of the at least one transmission, and
- an at least selectively-actuatable connection configured to interrupt a connection between-the planetary gear train and the secondary input shaft of the at least one transmission, comprising the acts of:
- applying power to the primary input shaft of the at least one transmission;
- determining a required rotation speed of the secondary input shaft of the at least one transmission to set a predetermined translation ratio between the primary input shaft and the output shaft of the at least one transmission;
- rotating the secondary input shaft at the required rotation speed, wherein
- the primary input shaft is connected directly or via intermediate elements to a sun gear of the planetary gear train to feed a mechanical power via the primary input shaft onto the sun gear of the planetary gear train to be transferred via the planetary gear train to the output shaft,
- the secondary input shaft is connected directly or via intermediate elements to a carrier shaft of the planetary gear train to hold the carrier shaft at a standstill or stationary, or to change the rotation speed of the carrier shaft via the secondary drive, and
- the output shaft is connected directly or via intermediate elements to a ring gear of the planetary gear train.
9 more elements
Dependencies are inferred from the claim text.