Abstract:
Ten forward speeds and one reverse speed are achieved by a power transmission apparatus for a vehicle including a double clutch, a plurality of input, output, and idle shafts, a plurality of gears fixed to or rotatable on the shafts, a plurality of synchronizers selectively synchronizing gears to the shafts.
Abstract:
A power transmission apparatus may include a first input shaft having at least one input gear and selectively connected to a power source through a first clutch, a second input shaft having at least one input gear and selectively connected to the power source through a second clutch, a first speed output unit including a first output shaft and at least one speed gear engaged with the at least one input gear on the first and second input shafts, a second speed output unit including a second output shaft and at least one speed gear engaged with the at least one input gear on the first and second input shafts and rotatably disposed on the second output shaft, and an idle module including at least two idle gears on an idle shaft.
Abstract:
A dual clutch type transmission has first and second sections which respectively include first and second clutches. The clutches may be operated to allow torque transfer from an input to an output by way of the first section or the second section. One or more additional gear ratios is provided by a torque transfer pathway connecting the first and second sections such that torque is delivered from the input to the output by way of one or more stages of the first section and one or more stages of the second section. The additional gear ratios may comprise extra low gear ratios. Some embodiments provide transmissions suitable for driving pumps for use in hydraulic fracturing of geological formations.
Abstract:
A system and method for modifying a transmission in a gasoline-electric hybrid vehicle to couple the transmission to an off-axis electric motor. The transmission includes a motor-driven gear that replaces or modifies an engine-driven reverse gear. The motor-driven gear is hard-splined to an output shaft of the transmission. An electric motor is coupled to the output shaft of the transmission via the motor-driven gear. The electric motor may thus be oriented along an axis that differs from the axis of the transmission's output shaft.
Abstract:
A power transmission apparatus may include a first input shaft adapted to selectively receive torque of an engine, a second input shaft disposed without rotational interference with the first input shaft, a third input shaft disposed in a row with the second input shaft and without rotational interference with the first input shaft, a planetary gear set including a first rotation element, a second rotation element directly connected to the third input shaft, and a third rotation element directly connected to the first input shaft, a motor/generator directly connected to the first rotation element and configured to achieve a reverse speed by inverse rotation thereof, and a first speed output unit and a second speed output unit each adapted to convert torque input from the second input shaft or the third input shaft and output the converted torque.
Abstract:
A gearbox comprising: an outer intermediate shaft carrying a first set of shaft gears; an inner intermediate shaft carrying a second set of shaft gears, the inner intermediate shaft running concentrically within the outer intermediate shaft; a first lay shaft carrying a first set of drive gears and an output gear positioned along the first lay shaft between two of the first set of drive gears, a second lay shaft carrying a second set of drive gears and an output gear positioned along the second lay shaft between two of the second set of drive gears, each drive gear being coupled to a respective shaft gear to together provide a plurality of gear ratios between the intermediate shafts and the output shaft; and an output shaft, each lay shaft being coupled to the output shaft by the respective output gear.
Abstract:
A method is provided for controlling a hybrid powertrain, comprising a combustion engine; a gearbox with input and output shafts; a first planetary gear connected to the input; a second planetary gear connected to the first planetary gear; first and second electrical machines capable of operating each other and respectively connected to the first planetary gear and to the second planetary gear; one gear pair connected with the first planetary gear and the output shaft; and one gear pair connected with the second planetary gear and the output shaft. The method comprising, while the combustion engine is operating: ensuring that gears are engaged in the one gear pair connected with the first planetary gear and the one gear pair connected with the second planetary gear, and activating the first and second electrical machines so that total emitted electrical power is zero and a torque is generated in the output shaft.
Abstract:
A transmission for a hybrid vehicle includes an input shaft connected to an engine, an output shaft disposed in parallel with the input shaft, a first hollow shaft installed on an outer peripheral surface of one side of the input shaft, a second hollow shaft installed on an outer peripheral surface of the other side of the input shaft, a first motor connected to the first hollow shaft, a second motor connected to the second hollow shaft, a first speed-shifting output part provided between the first hollow shaft and the output shaft, a second speed-shifting output part provided between the second hollow shaft and the output shaft, a first synchronizer synchronously connecting the first hollow shaft to the first speed-shifting output part, and a second synchronizer synchronously connecting the second hollow shaft to the second speed-shifting output part.
Abstract:
A power transmission apparatus may include a first input shaft adapted to selectively receive torque of an engine, a second input shaft disposed without rotational interference with the first input shaft, a third input shaft disposed in a row with the second input shaft and without rotational interference with the first input shaft, a planetary gear set including a first rotation element, a second rotation element directly connected to the third input shaft, and a third rotation element directly connected to the first input shaft, a motor/generator directly connected to the first rotation element and configured to achieve a reverse speed by inverse rotation thereof, and a first speed output unit and a second speed output unit each adapted to convert torque input from the second input shaft or the third input shaft and output the converted torque.
Abstract:
A motor vehicle powershift transmission which comprising two partial transmissions (TG1, TG2) each with a respective input shaft (GE1, GE2) that can be drivingly connected, via a main separator clutch (CL1, CL2; CL1′, CL2′; CL1*, CL2*), with the driveshaft (TW) of a drive engine (VM) and, on the output side, with a common output shaft (GA). To enable powershifts without frictional slipping, the two input shafts (GE1, GE2), on the input side, can be connected to and disconnected from a respective intermediate shaft (ZW1, ZW2) by the respective main separator clutch (CL1, CL2; CL1′, CL2′; CL1*, CL2*). The first intermediate shaft (ZW1) is directly connected to the driveshaft (TW) and the second intermediate shaft (ZW2) is in driving connection with the first intermediate shaft (ZW1) by way of a variator (V) which has a continuously adjustable transmission ratio (iV) and a rest transmission ratio having the value one iV—0=1).