Christian Sibla

Bio: Christian Sibla is an academic researcher from ZF Friedrichshafen. The author has contributed to research in topics: Drive shaft & Spiral bevel gear. The author has an hindex of 10, co-authored 100 publications receiving 584 citations.

Multi step transmission

Abstract: A multi step transmission, of a planetary design, which has an external housing and includes a transmission input shaft and a transmission output shaft. First, second, third and fourth planetary gear sets are each accommodated within the transmission housing along with third, fourth, fifth, sixth, seventh and eighth shafts, and at least six shift elements. The at least six shift elements comprises first and second brakes and first, second, third and fourth clutches, whose selected engagement produces different transmission ratios between the drive shaft and the output shaft such that nine separate forward gears and one reverse gear can be achieved. For each of the forward and reverse gears, only three of the six shift elements are engaged.

Multi-ratio transmission

Abstract: A multi-stage transmission with nine forward gears and one reverse gear comprising four planetary gear sets, eight rotatable shafts and six shift elements. The sun gear of the first set is connected to fourth shaft which is couplable to a housing by the first brake, the carrier of the first set is connected to the third shaft, which is coupled to the housing by the second brake, which is detachably connectable to the drive shaft, via the first clutch, and via a second clutch is detachably connectable to the seventh shaft. The seventh shaft is connected to the ring gear of the second set and with the sun of the fourth set, and the drive shaft is connected to the sun of the second set and to the carrier of the third set. The sixth shaft is connected to the ring gear of the first set, the carrier of the second set and the sun gear of the third set. The ring gear of the fourth set is connected to the fifth shaft which can be coupled to the housing via the third brake. The output shaft, via a third clutch, is detachably connectable to the eighth shaft, which is connected to the ring gear of the second set and to the carrier of the fourth set.

Multi-speed gearbox

Abstract: The multi-speed transmission comprises four planetary gear sets eight rotatable shafts and six shifting elements. The sun gear of the first planetary gear set is connected to the fifth shaft, which is attachable to the housing through a third brake. The input shaft is, through a first coupling, connectable to the seventh shaft connected to the sun gear of the third planetary gear set, which is connected to the bar of the first planetary gear set and is connectable to the fourth shaft through a third coupling, which is connected to the sun gear of the second planetary gear set and is attachable to the housing through a second brake. The input shaft is, through a second coupling, connectable to the eighth shaft connected to the sun gear of the fourth planetary gear set and the third shaft is connected to the ring gear of the first planetary gear set, the bar of the second planetary gear set, and the ring gear of the fourth planetary gear set, and is attachable to the housing through a first brake. The sixth shaft is connected to the ring gear of the second planetary gear set and the ring gear of the third planetary gear set. The output shaft is connected to the bar of the third planetary gear set and the bar of the fourth planetary gear set.

Transmission for a Motor Vehicle

Abstract: Disclosed is a transmission (1), in particular a dual-clutch transmission, for a motor vehicle, comprising at least two sub-transmissions (2, 3), each sub-transmission (2, 3) having at least one input shaft (EW1, EW2), the at least two input shafts (EW1, EW2) being arranged on a input drive end (AN) on an input shaft axis (4), an output shaft on an output drive end (AB) as an output drive shaft of the two sub-transmissions (2, 3), a layshaft assembly (6), the layshaft assembly (6) having at least one layshaft axis (5a, 5b) with at least two layshafts (VW1a, VW1b, VW2a, VW2b, VW3a, VW3b, VW4a, VW4b, VW5a), at least one main shaft (HW1, HW2) arranged on the input shaft axis (4), and at least one range group (RG1, RG2), via which at least one main shaft (HW1, HW2) can be connected to the output drive shaft, at least one of the input shafts (EW1, EW2) being connectable to the output drive shaft via at least one gear plane (I, II, III, IV, V, VI, VII, VIII, IX, X, XI) and or via at least one shift element (S11, S12, S21, S22, S31, S41, S42, S51, S52, S61) and/or via at least one main shaft (HW1, HW2), characterised in that N shift devices (SE1, SE2, SE3, SE4, SE5, SE6) are arranged, at most one of the N shift devices (SE1, SE2, SE3, SE4, SE5, SE6) being arranged on the at least one layshaft axis (5a, 5b) and N being a number greater than or equal to three, and in that the first three of the N shift devices (SE1, SE2, SE3, SE4, SE5, SE6) are arranged torque-downstream of the input drive end (AN) of the transmission (1) on the input shaft axis (4).

Hybridantriebsstrang für ein Kraftfahrzeug

Abstract: Ein Getriebe mit einer Getriebeeingangswelle (4) und einer Getriebeausgangswelle (5) und zumindest zwei Leistungspfaden (L1, L2) zwischen der Getriebeeingangswelle (4) und einem Hauptradsatz (HRS) mit vier in Drehzahlordnung als erste, zweite, dritte und vierte Welle bezeichneten Wellen (W1, W2, W3, W4), wobei ein erster Leistungspfade (L1) ein erstes festes Ubersetzungsverhaltnis (i1) und ein zweiter der Leistungspfade (L2) ein zweites festes Ubersetzungsverhaltnis (i2) aufweist, wobei das zweite feste Ubersetzungsverhaltnis kleiner ist als das erste feste Ubersetzungsverhaltnis (i1), wobei die erste Welle (W1) uber ein erstes Schaltelement (C) festsetzbar und uber ein zweites Schaltelement (B) mit dem ersten Leistungspfad (L1) verbindbar ist, wobei die zweite Welle (W2) uber ein drittes Schaltelement (D) mit dem ersten Leistungspfad (L1) und uber ein viertes Schaltelement (E) mit dem zweiten Leistungspfad (L2) verbindbar ist, wobei die dritte Welle (W3) standig mit der Getriebeausgangswelle verbunden ist und die vierte Welle (W4) uber ein funftes Schaltelement (A) mit dem zweiten Leistungspfad (L2) verbindbar und uber ein sechstes Schaltelement (F) festsetzbar ist.

Multi-speed transmission

Abstract: A multi-speed transmission has three planetary gear sets and six torque-transmitting mechanism packaged in various ones of five zones within a transmission cavity. Each planetary gear set has a ring gear member, a sun gear member and a carrier member that rotatably supports a plurality of pinion gears that intermesh with both the sun gear member and the ring gear member. Certain members are continuously connected for common rotation. Specifically, an interconnecting member continuously interconnects for common rotation the carrier member of the first planetary gear set, the sun gear member of the second planetary gear set and the ring gear member of the third planetary gear set. Additionally, the sun gear member of the first planetary gear set is grounded to the transmission casing via a radially-extending structural member.

Multi-stage transmission

Abstract: The invention relates to a multi-stage transmission provided with an input shaft (3), which is connected to a shiftable front-mounted planet gear set (10), with an output shaft (4), which is connected to a shiftable main planet gear set (20), and with a number of shifting elements (A to F) whose selective closing enables the shifting of at least six forward speeds without range shift. An output element of the front-mounted planet gear set (10) can be connected to a first input element of the main planet gear set (20) via a first shifting element (A) and can be connected to a second input element of the main planet gear set (20) via a second shifting element (B). The input shaft (3) can be connected to a third input element of the main planet gear set (20) via a fifth shifting element (E). Preferably, a sun gear (11) of the front-mounted planet gear set (10) can be fixed via a sixth shifting element (F) mounted on the side of the front-mounted planet gear set (10) facing away from the main planet gear set (20). The front-mounted planet gear set (10) is provided in the form of a Plus gearing having inner and outer planet gears (12, 13) whose webs (15, 16) are interconnected.

Mobile station and radio base station

Abstract: A mobile station UE is provided with an access right management unit for managing a CSG-ID corresponding to a CSG cell which permits the mobile station UE to access thereto, a measurement unit for measuring the radio quality of a CSG cell defined as an object to be measured, and a measurement report transmission unit for, only when the radio quality of a CSG cell corresponding to the CSG-ID managed by the access right management unit out of the radio qualities of CSG cells measured by the measurement unit satisfies a report condition, transmitting a measurement report including at least the radio quality of the CSG cell corresponding to the CSG-ID.

Multi-speed transmission

Abstract: The present disclosure provides a multiple speed transmission having an input member, an output member, a plurality of planetary gearsets, a plurality of interconnecting members and a plurality of torque-transmitting mechanisms. Each of the plurality of planetary gearsets includes a sun gear, a ring gear, and a carrier member with pinion gears. The input member is selectively interconnected with at least one member of one of the plurality of planetary gear sets, and the output member is continuously interconnected with another member of one of the plurality of planetary gear sets. At least ten forward speeds and one reverse speed are achieved by the selective engagement of the plurality of torque-transmitting mechanisms.

Planetary gear train of automatic transmission for vehicles

Abstract: A planetary gear train may include an input shaft, an output gear adapted to output a shifted torque, a first compound planetary gear set having four rotation elements by combining first and second planetary gear sets, a second compound planetary gear set having four rotation elements by combining third and fourth planetary gear sets, eight rotation shafts including two rotation elements connected to each other or one rotation element among the rotation elements of the first and second compound planetary gear sets, and six friction members including three clutches interposed between a selected rotational shaft among the rotational shafts and the input shaft and adapted to selectively transmit the torque and three brakes interposed between a selected rotational shaft among the rotational shafts and a transmission housing.