摘要:
A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a countershaft which have an output gear that couple gears of an output shaft such power shift forward gears and a reverse gear can be shifted. Three dual gear planes each comprising one fixed gear which is supported by an input shaft and two idler gears which are supported by a respective countershaft. In each dual gear plane at least one idler gear wheel can be used for at least two gears such that at least one winding-path gear is engaged by engagement of a disengaged output coupling device assigned to one of the output gear wheels.
摘要:
A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a countershaft which have an output gear that couple gears of an output shaft such power shift forward gears and a reverse gear can be shifted. Two dual gear planes each comprising one fixed gear which is supported by an input shaft and two idler gears which are supported by a respective countershaft. In each dual gear plane at least one idler gear wheel can be used for at least two gears. Two single gear planes each comprise an idler gear wheel and a fixed gear wheel, so that at least one winding-path gear can be shifted via the shifting device and one winding-path gear via another shifting device.
摘要:
A method and a device for controlling the oil supply of an automatic transmission (gearbox) and to a starting element. The method can guarantee a sufficient supply of oil to a hydraulic control unit of the automatic transmission and/or the starting element, in particular an oil-cooled friction clutch, both during the operation of the internal combustion engine (4) and when the latter is at a standstill with the aid of an oil pump (2) that can be mechanically driven by the internal combustion engine (4) and a second oil pump (3) that can be electrically driven. In addition, the cooling oil supply of the starting element is guaranteed by the provision of a low-pressure oil by way of the electrically driven oil pump (3), at least during the starting operation, the stream cooling the starting element (11).
摘要:
The invention relates to a positively engaging shifting element which can be hydraulically or pneumatically actuated, comprising a hydraulically or pneumatically actuatable piston (I) having a piston compartment (2) containing a hydraulic medium or pressure medium, a jaw (3) having a dog-type gearing (4) and a mating jaw (5) with which the dog-type gearing (4) meshes when engaged. The engaging speed of the jaw (3) can be increased by decoupling the jaw (3) from the hydraulic or pneumatic volume flow when the jaws (3) and (5) are in a tooth butt position in relation to each other and by pretensioning the jaw (3) by means of a mechanical device (6) that is actively connected to the piston (I). The gap between the jaws, i.e. the window into which the jaw (3) can be engaged is maintained as narrow as possible in order for a tooth butt position of the jaws (3) and (5) in relation to each other being highly probable when the shift element is applied.
摘要:
The invention relates to a positively engaging shifting element which can be hydraulically or pneumatically actuated, comprising a hydraulically or pneumatically actuatable piston (I) having a piston compartment (2) containing a hydraulic medium or pressure medium, a pressure medium supply (6) for the piston (I), a jaw (3) and a mating jaw (4) with which the jaw (3) meshes when engaged. The engaging speed of the jaw (3) can be increased by decoupling the jaw (3) from the hydraulic or pneumatic volume flow when the jaws (3) and (4) are in a tooth butt position in relation to each other and by pretensioning the jaw (3) by means of a hydraulic or pneumatic pressure reservoir (7) that is actively connected to the piston (I) and that is connected to the pressure medium supply (6). The gap between the jaws, i.e. the window into which the jaw (3) can be engaged is maintained as narrow as possible in order for a tooth butt position of the jaws (3) and (4) in relation to each other being highly probable when the shift element is applied.
摘要:
A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to either first or second countershafts which each have an output gear that couple gears of an output shaft such that forward and reverse gears can be shifted. A shifting device couples gears to engage power shift forward and reverse gears. Two dual gear planes each comprising one fixed gear and two idler gears which are supported by a respective countershaft. In each dual gear plane, at least one idler gear wheel can be used for at least two gears. Two single gear planes each comprise an idler and fixed gear such that at least one power shift winding-gear is engaged by a shifting device.
摘要:
A dual clutch transmission having countershafts, idler gears and input shafts with gears which engage with the idler gears. The countershafts have a power take-off gear that is coupled to an output shaft. Shift elements connect gear wheels to engage forward and reverse gears. The transmission has two dual gear planes and two single gear planes, one idler gear of the countershafts being respectively associated with a fixed gear of one of the transmission input shafts in each of the dual gear planes. An idler gear in each dual gear plane is utilized for two gears and one idler gear of one countershafts associating with an input shaft fixed gear to shift at least one winding path gear via at least one shift element on each countershaft, and at least one winding path gear can be shifted with a coupling device associated with the take-off gear of the first countershaft and is disengaged.
摘要:
A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a respective countershaft which have an output gear that couple gears of an output shaft such that forward and reverse gears can be shifted. Three dual gear planes each comprise two idler gears, each supported by a respective countershaft, and one fixed gear. In each dual gear plane, at least one idler gear wheel can be used for implementing at least two gears so that at least one winding-path gear can be shifted via a shifting device.
摘要:
A transmission is described, in particular an automatic transmission, which has several shift control elements (A, B, C, D, E) and several gearwheels (2, 3) which can be engaged via the shift control elements (A to E) to form a power flow, in which, to establish a transmission ratio in each case at least one of the shift control elements (A to E) is closed. The shift control elements (B, C, E), which are engaged during an up-shift, are formed as frictional shift control elements, and the shift control elements (A, D), which during up-shifts respectively only constitute a shift control element to be disengaged, are made as positive-locking gear elements.
摘要:
A power-shiftable transmission, in particular an automatic transmission for a vehicle, which comprises a plurality of frictional shifting elements and at least one interlocking shifting element (A, B, C, D, E) and a plurality of gearwheels which can be engaged in a power flow by the shifting elements (A, B, C, D, E). In order to engage a gear step, at least two associated shifting elements (A, B, C, D, E) are engaged and at least one interlocking shifting element (B), as a shifting element (B) to be engaged, is associated with a gear step to be engaged with a supporting gear.