A transmission system is disclosed, having a clutch module with an input and a first and a second output. Between the first output and the input, a first clutch device is present, and between the second output and the input a second clutch device is present. The transmission system further includes a transmission module having a first partial transmission and a second partial transmission, in which the two outputs of the clutch module are connected to the two inputs of the transmission module.

The invention relates to a lubricating device for controlling lubrication in a stepped transmission comprising a splitter section (10, 20) with an input shaft (I) and a main gear section (30, 40, 50, 60) with an output shaft (O) and a countershaft (C); where the splitter section (10, 20) comprises a first splitter gear set (10) connectable to the input shaft (I) by a first gear shift mechanism (23); and a second splitter gear set (20) connectable to the input shaft (I) by the first gear shift mechanism (23); and connectable to the output shaft (O) by a second gear shift mechanism (33). A lubrication arrangement for the second splitter gear set (20) is arranged to be controlled by the current positions of the first and the second gear shift mechanisms (23, 33); wherein the lubrication arrangement is controlled to at least reduce lubrication when the first and the second gear shift mechanisms (23, 33) are simultaneously connected to or disconnected from the second splitter gear set (20).

A transmission system configured to transfer power from a power source to a load is provided. The transmission system includes an input section coupled to the power source and a range section coupled to the load. The input section includes a plurality of input clutches configured to selectively transition between engaged and disengaged states to provide one or more input speeds. The range section includes a plurality of range clutches configured to be selectively transition between engaged and disengaged states to provide one or more speed ranges. When the range section is commanded to sequentially shift between two of the one or more speed ranges, the range section is configured to maintain at least two of the plurality of range clutches in the engaged state and transition a maximum of one of the plurality of range clutches from the disengaged state to the engaged state.

A dual clutch transmission for a vehicle may include a first input shaft to which a first clutch is connected; a second input shaft connected to a second clutch and disposed coaxially with the first input shaft; a first output shaft, a second output shaft and a third output shaft disposed in parallel with the first input shaft and the second input shaft; and a combined gear group including two pairs of external gears configured to be connected in series to each other or disconnected from each other so that power of the first input shaft is decelerated in two steps using the first output shaft to enable the second input shaft to be driven in a direction in which the first input shaft is driven.

A drive system having eCVT functionality with AMT cost advantages includes a transmission having a plurality of different operating modes. The system includes a transmission output shaft, a stationary member and a gear set including first, second, and third elements. The first element connects with the transmission output shaft. An output shaft of a non-electric power plant connects with the first element through the second element for driving the first element. A drive shaft of an electric power plant connects with the first element through the third element for driving the first element. The system includes a plurality of non-friction, controllable, coupling assemblies. A first coupling assembly has a first coupling state for grounding the second element to the stationary member, a second coupling state for grounding the third element to the stationary member and an uncoupling state to allow the second and third elements to drive the first element.

An aspect of the present invention provides a speed reducer including a supporting block, an input gear rotatably supported on the supporting block, an intermediate gear meshing with the input gear, an output gear meshing with the intermediate gear, and a gear position changing mechanism configured to change a position of the intermediate gear relative to the input and output gears.

A transmission device and an antenna down-tilt control system includes: an input component, comprising an inner gear ring, a first gear and a second gear both coaxial with the inner gear ring, and a third gear engaged with the first gear; a unidirectional control mechanism, comprising a first unidirectional component, the first unidirectional component comprising a first rotating member that can unidirectionally rotate in a first rotation direction, the first rotating member being fixedly connected to the inner gear ring; an output component, comprising at least two fourth gears arranged at an interval in a circumferential direction, the third gear being selectively engaged with any one of the fourth gears; and a rotary component, comprising a fifth gear and a rotary box.

A road vehicle with hybrid drive having: at least one pair of drive wheels; an internal combustion engine; a reversible electric machine; and a dual-clutch transmission. The dual-clutch transmission has: a first primary shaft and a second primary shaft; a first clutch interposed between the internal combustion engine and the first primary shaft; and a second clutch interposed between the internal combustion engine and the second primary shaft; a third clutch, which is interposed between a shaft of the electric machine and the first primary shaft so as to connect/disconnect the shaft of the electric machine to/from the first primary shaft; and a fourth clutch, which is interposed between the shaft of the electric machine and the second primary shaft so as to connect/disconnect the shaft of the electric machine to/from the second primary shaft.

A double clutch transmission (DCT) may include a first input shaft and a second input shaft disposed to or not to receive power from the same power source, respectively; a first output shaft and a second output shaft each disposed in parallel with the first input shaft; a first drive gear disposed on and rotated with the first input shaft; a second drive gear disposed on and rotated with the second input shaft; a first driven gear engaged with the first drive gear and rotatably disposed on a selection output shaft which is one of the first output shaft and the second output shaft; a second driven gear engaged with the second drive gear and rotatably disposed on the selection output shaft; and a sleeve synchronizer selectively connecting between the first driven gear and the second driven gear.

A range-shift transmission has a range input shaft, on which gear wheels of gear pairs of at least two range groups are arranged coaxially. The range input shaft is drivingly connected to a range output shaft via a gearwheel pair of a range group. The range-shift transmission has a second input shaft arranged coaxially and rotatably relative to the range input shaft.