DUAL CLUTCH TRANSMISSION FOR A MOTOR VEHICLE
World Intellectual Property Organization Patent
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Abstract
The invention relates to a double clutch transmission for a motor vehicle, having gear wheel sets which can be shifted via shifting elements and which form exactly eight wheel planes (RE-1 to RE-8), each allocated to a first sub-transmission (A) and to a second sub-transmission (B), of which each sub-transmission (A, B) has one input shaft (22, 23) and both sub-transmissions (A, B) have a common driven shaft (24) which is axially parallel to the input shafts (22, 23), wherein the input shafts (22, 23) which are axially parallel to each other can be activated in alternation via one load-shiftable clutch (K1, K2) each, and the even forward gears are allocated to the first sub-transmission (A) and the odd forward gears are allocated to the second sub-transmission (B), which are shiftable via the shifting element (SE-A to SE-G) during a gear shift, wherein each of the wheel planes has a drive gear wheel mounted loose or rotationally fixed on the respective input shaft (22, 23) and a driven-side gear wheel (27, 30), intermeshing therewith and mounted loose or rotationally fixed on the driven shaft (24), which can be coupled to our decoupled from the input shaft (22) and/or the driven shaft (24), forming forward gears by means of shifting elements (SE-A to SE-G). According to the invention, the first wheel plane (RE-1) and the second wheel plane (RE-2) in the first sub-transmission (A) in the direction of the flow of torque proceeding from the clutches (K1, K2) are connected to each other in a rotationally fixed manner via a driven-side hollow shaft (29) which is coaxially rotationally mounted on the driven shaft (24). A driven-side gear wheel (28) of the first wheel plane (RE-1) and a driven-side gear wheel (32) of the second wheel plane (RE-2) are arranged on the driven-side hollow shaft (29) of the first sub-transmission (A) in a rotationally fixed manner. In addition, the second wheel plane (RE-2) and a third wheel plane (RE-3) which follows in the axial direction are connected to each other in a rotationally fixed manner via a drive-side hollow shaft (31) which is coaxially rotationally mounted on the first input shaft (22), on which a drive-side gear wheel (30) of the second wheel plane (RE-2) and a drive-side gear wheel (33) of the third wheel plane (RE-3) are arranged in a rotationally fixed manner.
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