Abstract:
A method is provided to control a hybrid powertrain to achieve gear shifts without torque interruption, comprising a gearbox with input shaft and output shafts; a first planetary gear connected to the input shaft and a first main shaft; a second planetary gear connected to the first planetary gear and a second main shaft; first and second electrical machines respectively connected to the first and second planetary gears; a first gear pair and a third gear pair between the first main shaft and a countershaft; and a second gear pair between the second main shaft and the countershaft, which is connected with the output shaft via a fifth gear pair. The method comprises disconnecting the first gear pair; connecting the first planetary gear with the output shaft via a coupling mechanism connecting the first main shaft and output shaft; disconnecting the fifth gear pair; transferring torque generated from the combustion engine from the second planetary gear to the countershaft via the second gear pair; and transferring a torque from the countershaft to the output shaft via the third gear pair.
Abstract:
A multi-speed torque filled transmission (10) especially for a vehicle, comprises a power split device (11) having at least a first link (11a), a second link (11b) and a third link (11c) with a negative speed ratio between the second link (11b) and the third link (11c) when the first link (11a) is stopped, An input shaft (12) of the transmission (10) is connected to the first link (11a) of said power split device (11) and to a driving shaft of a prime mover (18). A shiftable first sub-transmission (14) with a first driveshaft (20) and a shiftable second sub-transmission (15) with a second driveshaft (22), each of the sub-transmissions (14, 15) provides a plurality of different gear ratios, wherein the first driveshaft (20) of the first sub-transmission (14) is connected to the first link (11a) of said power split device (11). The second driveshaft (22) of the second sub-transmission (15) is connected to the second link (11b) of said power split device (11). An intermediate shaft (13), is kinematically connected to a driven shaft (21, 24) of said sub-transmissions (14, 15). A controllable lock-up clutch (CL) interconnects any two links (11a, 11b) of said power split device (11). A passive torque fill device (35) is kinematically connected to the third link (11c) of said power split device (11). The transmission (10) further comprises a planetary range changer (40) with a first input shaft (40a) and a second input shaft (40b), connected to an output shaft (50) with at least two different gear ratios, wherein said intermediate shaft (13) is connected to at least one of the input shafts of the planetary range changer (40). A bypass driveline kinematically connects one of the driveshafts of the sub-transmissions to at least another one of the input shafts of the range changer with fixed gear ratio via controllable bypass clutch.
Abstract:
Method (400) and control device (115) for control of an Automated Manual Transmission, AMT, gearbox (113) in a vehicle (100). The gearbox (113) comprises a split gearbox (210) and a main gearbox (220), and is especially arranged for shifting with zero shift technology. The method (400) comprises detection (401) of a shift request; placement (402) of the split gearbox (210) in a neutral position; engagement (403) of the requested main gear (220) with zero shift technology, and shifting (406) to the requested split gear (210).
Abstract:
The invention relates to a drive train of a motor vehicle, having a hybrid drive comprising an internal combustion engine (VM) and an electrical engine (EM), and having an automated auxiliary transmission (CT) connected between the hybrid drive and an axle drive (AB), wherein the auxiliary drive (CT) has at least one primary transmission (HG), implemented in a countershaft design, having a primary shaft (W H ) and at least one countershaft (W VG1, W VG2 ), a front-mounted unit (GV), upstream of the primary transmission (HG) in respect of drive technology and in particular designed as a split unit, and/or a rear-mounted unit (GP), downstream of the primary transmission (HG) in respect of drive technology and in particular designed as a range unit, wherein an input shaft (W GE ) of the auxiliary transmission (CT) is connected to the internal combustion engine (VM) via a controllable starting clutch (AK) and an output shaft (W GA ) of the auxiliary transmission (CT) is connected to the axle drive (AB), and wherein the electrical engine (EM) of the hybrid drive is connected to the or each countershaft (W VG1, W VG2 ).
Abstract:
The invention relates to a method and a system for controlling a vehicle, wherein, at the time of shifting from one gear train among a plurality of gear trains to another gear train, a transmission for controlling a transfer torque variable mechanism and supplementing torque during shifting, during a period of transferring at least a part of torque of an engine (1) by the transfer torque variable means (203, 204), controls so as to generate engine torque larger than engine torque before the period at least once and carries out shifting.
Abstract:
Die Erfindung betrifft ein Mehrgruppengetriebe eines Kraftfahrzeuges und ein Verfahren zu dessen Betrieb, mit wenigstens zwei in einem Antriebsstrang angeordneten Getriebegruppen (2,2',3,3'), bei dem Mittel zur Zugkraftunterstützung bei Gangwechseln vorgesehen sind. Um zugkrafterhaltende Gangwechsel zu ermöglichen, sind an einer Vorschaltgruppe (2,2') mit einer ersten, einem Antriebsmotor zugewandten Gangkonstanten (i k1 ) und einer zweiten, einer Hauptgruppe (3,3') zugewanden Gangkonstanten (i k2 ) zwei Lastschaltkupplungen (5,5',7,7') und eine Zwischengangkupplung (16,16') angeordnet, wobei die erste Lastschaltkupplung (5,5') eingangsseitig mit einer Antriebswelle (6) des Antriebsmotors und ausgangsseitig mit einem Losrad (11) der ersten Gangkonstanten (i k1 ) verbunden ist, die zweite Lastschaltkupplung (7,7') eingangsseitig mit der Antriebswelle (6) und ausgangsseitig mit einem Losrad (14) der zweiten Gangkonstanten (i k2 ) verbunden ist, und die Zwischengangkupplung (16,16') eingangsseitig mit dem Losrad (14) der zweiten Gangkonstanten (i k2 ) und ausgangsseitig mit einer mit einer Getriebeabtriebswelle (36) zumindest wirkverbundenen Getriebehauptwelle (30) der Hauptgruppe (3,3') verbunden ist, wobei über die Zwischengangkupplung (16,16') in Wirkverbindung mit wenigstens der zweiten Lastschaltkupplung (7,7') ein Direktgang als ein Zwischengang schaltbar ist, und über die erste und die zweite Lastschaltkupplung (5,5',7,7') die Gangkonstanten (i k1 ,i k2 ) der Vorschaltgruppe (2,2') lastschaltbar sind.
Abstract:
Die Erfindung betrifft ein Automatgetriebe (1) mit wenigstens einem Planetensatz (4). Erfindungsgemäß ist ein parallel zu diesem Planetensatz (4) verlaufender Weg der Drehmomentübertragung vorhanden. In einer Gangstufe muss daher der Planetensatz (4) des Getriebes nicht zur Drehmomentübertragung genutzt werden. Daher ist in dieser Gangstufe die Kopplungsstruktur des Planetensatzes (4) über Kupplungs- und/oder Bremselemente veränderbar.