摘要:
A dual clutch transmission has a housing, a drive shaft arrangement, an output shaft and a countershaft. A plurality of gear sets is supported on the drive shaft arrangement and the countershaft, respectively. The gear sets are shifted by means of respective shifting clutches in order to engage different gears. The countershaft is connected to the output shaft via a constant output gear set. The gear sets are divided between two gear trains.A first forward gear and a reverse gear are each assigned to a different gear train. The gear set for the reverse gear is driven via an auxiliary shaft, which is in turn driven via a specific gear set. The specific gear set is assigned to the same gear train as the reverse gear.
摘要:
A torque transfer device, in particular in the power train of a motor vehicle, having at least one wet-running clutch device, in particular a multi-plate clutch device, which is actuatable by means of an actuating lever device, in particular an actuating lever spring device, through a pressure member. The pressure member has a blocking cross section which is opened toward a pressure chamber.
摘要:
In a dual-clutch transmission for a motor vehicle of four-shaft design including, for shifting into reverse gear, a shift element which connects a reverse gear drive output shaft to a reverse gear gearwheel, the shift element for the reverse gear is situated on the drive input shaft or on the drive output shaft and the shift element is usable in addition to shifting the reverse gear, for shifting also a forward gear.
摘要:
A transmission is provided having an input member, an output member, a dual clutch assembly, a countershaft, a plurality of co-planar gear sets, a plurality of interconnecting members, and a plurality of torque transmitting devices. The torque transmitting devices include synchronizer assemblies.
摘要:
A dual clutch transmission apparatus includes a first input shaft, a second input shaft, a first counter shaft, a second counter shaft, an output shaft, a dual clutch including a first clutch transmitting rotation of a driving shaft which is driven by a power plant, a second clutch transmitting rotation of the driving shaft, a final transmission gear train transmitting rotation of the first counter shaft to the output shaft, a first gear change mechanism, a second gear change mechanism, a switching clutch connecting the first input shaft to the output shaft; and an intermediate transmission gear train transmitting rotation between the first input shaft and the second counter shaft, wherein the first and second gear change mechanisms share a common driving gear.
摘要:
A method and system for executing a shift from a first fixed gear to a second fixed gear in a powertrain system comprising a two-mode, compound-split, electro-mechanical transmission operative to receive a speed input from an engine is described. It includes deactivating an off-going clutch, and generating a time-based profile for rotational speed of an oncoming clutch. The input speed is controlled based upon the rotational speed of the oncoming clutch and an output of the transmission. The oncoming clutch is actuated, preferably when the input speed is synchronized with a rotational speed of an output shaft of the transmission multiplied by a gear ratio of the second fixed gear, preferably after a predetermined elapsed period of time in the range of 500 milliseconds.
摘要:
A motor vehicle includes a drive train having a drive unit, a gearbox having a first gearbox input shaft and a second gearbox input shaft, and a clutch having a first clutch device which is associated with the first gearbox input shaft, and a second clutch device which is associated with the second gearbox input shaft, for transferring torque between the drive unit and the gearbox. The first and second clutch devices are plate clutches to which an operating fluid, such as a cooling oil, is supplied to operate the same. The gearbox is associated with an actuator device and a control device for controlling the actuator device, the arrangement of which enables the gears associated with the first and second gearbox input shafts to be engaged and disengaged. The control device is designed such that at least one gear is automatically engaged by the actuator device, as a result of the clutch release of the vehicle.
摘要:
A powertrain system is provided that includes a first prime mover and change-gear transmission having a first input shaft and a second input shaft. A twin clutch is disposed between the first prime mover and the transmission. The twin clutch includes a first main clutch positioned between the first prime mover and the first input shaft and a second main clutch positioned between the first prime mover and the second input shaft. The powertrain system also includes a second prime mover operably connected to one of the first and second input shafts.
摘要:
A system for actuating couplers to produce gear changes in a motor vehicle transmission includes first and second actuator drums supported for rotation, and first and second shift forks. Each first shift fork is driveably connected to a first actuator drum, secured to a first coupler, and displaced in response to rotation of a first actuator drum between a neutral state, wherein no gear is engaged, and at least one first drive state, wherein a gear of a first gear group is engaged. Each second shift fork is driveably connected to a second actuator drum, secured to a second coupler, and displaced in response to rotation of a second actuator drum between a neutral state, wherein no gear is engaged, and at least one second drive state, wherein a gear of the second gear group is engaged.
摘要:
The transmission comprises a gearbox having first and second input shafts coaxial to one another, wherein the second input shaft carries driving gearwheels associated to the even gears (second, fourth and sixth) and to the highest gear (sixth or seventh); and a clutch unit having first and second dry friction clutches arranged to couple a drive shaft of the motor vehicle respectively to the first and second input shafts of the gearbox. The first friction clutch associated to the first input shaft is normally disengaged, whereas the second friction clutch associated to the second input shaft is normally engaged.