2261results about "Multiple ratio transmission" patented technology

A drive device for an electric vehicle is provided for reducing the input speed of a motor and transmitting the reduced input speed to an output shaft. The device comprises a first planetary gear set comprising three first planetary gear elements, a first element connected to the motor and a second element connected to a first output shaft, a second planetary gear set comprising three second planetary gear elements, a first element connected to a third element of the three first planetary gear elements, a second element connected to a second output shaft, and a third element fixed, and a third planetary gear set comprising three third planetary gear elements, a first and a second element each connected to two elements of the three first planetary gear elements, and a third element connected to a torque vectoring motor.

An electric vehicle may comprise a chassis extending between a front and a rear and having a steering axle coupled to the chassis and arranged near the front. The electric vehicle may further comprise a first drive axle and a second drive axle coupled to the vehicle chassis and arranged near the rear. The first drive axle may comprise a first axle housing, a first drive wheel rotatably supported by the first axle housing, and a first electric machine operably coupled to the first drive wheel through a first power path, the first power path including a first gear reduction. The second drive axle may comprise a second axle housing, a second drive wheel rotatably supported by the second axle housing, and a second electric machine operably coupled to the second drive wheel through a second power path, the second power path having no speed change.

A drive system for a hybrid or electric vehicle that includes a transmission with four forward and four reverse gears. The transmission optionally includes a first and a second planetary gearset, and optionally a first and second range selector assembly. The range selector assemblies may include a clutch and a brake, and / or a synchronizer. The drive system may include a single electric motor with any example of a transmission of the present disclosure, or multiple electric motors individually driving separate transmissions. The motors may be arranged upstream or downstream of portions of a transmission, and they may be aligned parallel with or perpendicular to a drive axle, input shaft, output shaft, and any suitable combination thereof. An internal combustion engine may be included as well.

A power transmission device includes: a case that accommodates a power transmission mechanism; a strainer disposed to face a bottom wall portion in the case; a suction port for oil provided in a portion of the strainer facing the bottom wall portion; and a magnet disposed between the bottom wall portion and the strainer in the case. The magnet and the suction port are provided to be displaced from each other when viewed from a facing direction in which the strainer and the bottom wall portion face each other, and the suction port is provided with an opening facing a magnet side.

A lubricant supply system, for a drive apparatus of an electrically operated vehicle having at least one electric machine which outputs power to at least one vehicle wheel via a gear mechanism arrangement, includes an electric machine hydraulic circuit in which a lubricant tank is connected via a suction line to a pressure pump which conveys lubricant to the electric machine via an electric machine supply line, and includes a gear mechanism hydraulic circuit, via which lubricant can be conveyed to the gear mechanism arrangement. The pressure pump is associated as a common pressure pump with both the electric machine hydraulic circuit and the gear mechanism hydraulic circuit so that lubricant during pump operation can be recirculated both in the electric machine hydraulic circuit and in the gear mechanism hydraulic circuit.

A system and method for a multi-speed electric axle. The multi-speed electric axle includes, in one example, an electric machine rotationally coupled to sun gear in a first planetary gear set, a second planetary gear set rotationally coupled to a carrier in the first planetary gear set, a third planetary gear set rotationally coupled to the second planetary gear set, and a differential rotationally coupled to the third planetary gear set. In the multi-speed electric axle, the electric machine, the first planetary gear set, the second planetary gear set, the third planetary gear set, and the differential are coaxially arranged.

A wheel drive unit is to be fitted on a chassis of a heavy-duty vehicle. The wheel drive unit has at least one wheel shaft, configured to drive a wheel in rotation, at least one electric motor, capable of generating a torque, a gearbox for transmitting the torque of the motor(s) to the wheel shaft(s) and a transmission system between the electric motor(s) and the gearbox. The transmission system has of a gear train. A rotation axis of the electric motor is parallel to that of the wheel shaft(s).

The invention provides an automatic speed changing assembly which comprises a planetary gear speed reducing mechanism, a first-stage speed changing mechanism and a second-stage speed changing mechanism. An inner rotation driving member; the outer element is movably connected with the inner rotation driving part, so that the outer element can be driven to rotate under the driving of the inner rotation driving part, and the outer element is allowed to axially move between a first position and a second position relative to the inner rotation driving part; the driving disc is movably connected with the outer element, so that the driving disc can be driven to rotate under the driving of the outer element, and the driving disc is configured to be capable of changing between a first state in which the driving disc is combined with the power output element and a second state in which the driving disc is separated from the power output element; the first stage sun gear is configured to disengage from the outer element in a first position of the outer element and to engage with the outer element in a second position of the outer element. According to the automatic speed changing assembly and the electric capstan with the automatic speed changing assembly, the automatic speed changing function can be achieved, and reliability is good.

Methods and systems are provided for an electric axle. The electric axle system includes, in one example, a first electric machine and a planetary reduction differential configured to receive mechanical power from the first electric machine. The planetary reduction differential includes a first planetary gear set directly rotationally coupled to a second planetary gear set. In the electric axle system, a sun gear in the first planetary gear set is directly coupled to an input shaft of the planetary reduction differential.

A transmission can include a shaft arrangement including an input shaft configured to couple to a primer mover and an output shaft coaxially aligned with the input shaft; a plurality of drive gears supported by the shaft arrangement and including a first drive gear, a second drive gear, and a third drive gear; a countershaft arrangement including a first and second countershaft supporting a plurality of pinion gears intermeshed with the first, second, and third drive gears; a clutch arrangement including a first clutch assembly and a second clutch assembly operable to lock the first, second, and third drive gears to the shaft arrangement to selectively provide four gear ratios between the input and output shafts.

The present disclosure relates to a powertrain for a work machine (50). The powertrain (100) comprises a first prime mover (10), a second prime mover (12), a set of first gears (14a, 14b), a set of second gears (16a, 16b), an engaging unit (24), and an actuator (26). The first prime mover (10) configured to engage a first shaft (18). The second prime mover (12) configured to engage a power take off (PTO) shaft (20). The first gears (14a, 14a) mounted on the first shaft (18) and the second gears (16a, 16b) mounted on the PTO shaft (20). The actuator (26) configured to be in communication with the engaging unit (24), and further configured to selectively displace the engaging unit (24) from the idling configuration to the engaging configuration to engage with one of the second gears (16a, 16b). Advantageously, the engaging unit (24) facilitates the coupling of the second prime mover (12) with the first prime mover (10); therefore the powertrain (100) provides the desired torque to meet the requirements.

A method for power transmission method includes providing first and second shafts, first and second gear assemblies between the first and second shafts, and first and second coupling assemblies. The first coupling assembly coupling the first shaft to the first gear assembly, and the second coupling assembly coupling the first shaft to the second gear assembly. The speed of the first shaft varies, wherein the deployment of a locking element of the second coupling assembly is based on the speed of the first shaft.

The present invention relates to a dual clutch engine of a straddle type vehicle, comprising: a first clutch and a second clutch disposed on both left and right sides of an engine case; the main shaft comprises a first input shaft and a second input shaft which are separated from each other and coaxially arranged, the first clutch is connected with the first side of the first input shaft, the second clutch is connected with the second side of the second input shaft, and the first input shaft and the second input shaft are integrally located between the first clutch and the second clutch. According to the scheme, the layout of the first clutch, the second clutch and the gear shifting gear pair is improved, so that troubleshooting is facilitated.

A differential gear arrangement for a vehicle. The differential gear arrangement includes a ring gear, a spindle gear, a spindle gear carrier, a side gear and an output shaft. The spindle gear is carried by the spindle gear carrier and rotatable relative to the spindle gear carrier. The spindle gear and the side gear are engaged with each other. The side gear is rotationally connected to the output shaft. The ring gear is arranged to drive the output shaft by rotating the spindle gear carrier when the ring gear and the spindle gear carrier are rotationally connected to each other. The ring gear and the spindle gear carrier are rotationally disconnectable from each other by axial displacement of the spindle gear carrier relative to the ring gear and the output shaft.

Methods and systems are provided for an electric axle. The electric axle system includes, in one example, an electric machine and a multi-speed transmission that is rotationally coupled to the electric machine and rotationally coupled to two output shafts. The transmission includes a differential rotationally coupled and positioned coaxial to a mode planetary gear set. In the electric axle system, the mode planetary gear set is a meshed planet compound planetary gear set and a mode clutch in the transmission is configured to selectively shift the mode planetary gear set between a first mode and a second mode.

Methods and systems are provided for an electric axle. The electric axle system includes, in one example, an electric machine, a multi-speed transmission that is rotationally coupled to the electric machine, rotationally coupled to two output shafts, and including a Ravigneaux gear set rotationally coupled and positioned coaxial to a differential. The electric axle system further includes a mode clutch configured to selectively ground a carrier or a ring gear in the Ravigneaux gear set, ground a sun gear in the Ravigneaux gear set, and couple the carrier or the ring gear to the sun gear in the Ravigneaux gear set.

A coaxial asynchronous motor drive system, including a speed reducer, an electric motor and a main housing, and further including a motor controller, wherein the electric motor and the speed reducer are connected to form a motor reducer assembly and mounted inside the main housing, and the motor controller is fixed to the main housing and connected to the motor reducer assembly. The system reduces parasitic loss of an auxiliary motor drive system of a battery electric four-wheel-drive vehicle and increases the range per charge of the vehicle, and the compact and integrated coaxial motor drive system facilitates maximum utilization of available space of the vehicle.

Proposed are a speed reducer having a self-locking function without a ring gear, and a self-locking method of the speed reducer. Particularly, the speed reducer is characterized in that first, second and third planetary gears are supported at different locations on one side of a carrier, which is an input side, so as to be able to rotate and revolve and be disposed in n sets, and when fixing any one of a first sun gear and a second sun gear and switching one remaining sun gear into an input side and rotating the same, speed is not increased due to a self-locking function and a speed increase ratio is zero (a stationary state in which the sun gear used as the input side cannot rotate), thereby resulting in self-locking which is a non-operating state.

A hybrid drive system for a motor vehicle includes an internal combustion engine supplying first torques via a drive shaft to drive the motor vehicle and an electric machine having a rotor via which second drive torques can be supplied by the electric machine to drive the motor vehicle. An axle drive has an axle drive input gear wheel via which the axle drive can be driven. The system includes a gearbox having a first partial gearbox and a second partial gearbox. The first partial gearbox has a first planetary gear set having a first element, a second element, and a third element, The first partial gearbox also has a second planetary gear set having a fourth element, a fifth element, and a sixth element.

A planet carrier arrangement for a planetary gear system comprises a planet carrier (63) having a first support element (631) and a second support element (632) axially spaced from the first support element (631), a number of planet gears (62), and a coupling recess (634) in which a number of circumferentially spaced internal gear sectors (635) are provided. A number of support sections (636) are provided circumferentially between the internal gear sectors (635), the support sections (636) being located at least partially radially within an effective diameter of the internal gear sectors (635).Furthermore, an output element (71) is provided, to which a rotation of the planetary gear can be transmitted, wherein the output element (71) can be attached to the coupling recess (634) of the planet carrier (63) such that internal gear sectors (635) of the planet carrier (63) engage with external gear sectors (711) of the output element (71) to transmit a torque. The planet carrier arrangement is applicable in a drive system for a muscle-powered vehicle.

There is provided an air pressurisation system for an aircraft, the air pressurisation system comprising: a transmission for driving a rotor of a blower compressor for the air pressurisation system, wherein the transmission comprises: a first input configured to receive drive from a spool of a gas turbine engine; a second input; and an output configured to drive to the rotor of the blower compressor, wherein a speed of the output is determined by a function of speeds of the first and second inputs; and a brake coupled to the second input, wherein the brake is operable to engage and brake the transmission at the second input, in order to fix a transmission ratio of the transmission between the first input and the output.

A bottom bracket gearbox for a micromobility vehicle (1) includes at least one shift element. Each shift element includes a shift ring (3) with an outer toothing (4). The shift ring assigned a shift pawl (5) for locking or releasing the shift ring (3) of the shift element. The shift ring being assigned to a gearbox component. At least one rotatably mounted shift drum (7) for actuating the assigned shift pawl (5) is axially parallel to a central axis of rotation of the gearbox (6). A shift actuator (8) is arranged in the interior of the shift drum (7), which is formed, at least partially or in sections, as a hollow shaft.

The invention discloses a power-interruption-free gear-shifting hub motor two-gear transmission of a duplex planetary compound gear train. The power-interruption-free gear-shifting hub motor two-gear transmission is mainly composed of a driving motor; a first planetary gear train; a second planetary gear train; a controllable one-way clutch; a clutch; a central support shaft; and a transmission shell and the like. The first planetary gear train is a duplex planet compound planetary gear train with small characteristic parameters. An output shaft of the driving motor is connected with the first sun gear; the first right planet carrier is connected with the second sun gear; the second planet carrier is connected with wheels; the controllable one-way clutch is used for connecting the first gear ring and a transmission shell, and a one-way locking state, a two-way locking state or a two-way overrunning state can be achieved. The clutch is used for connecting the drive motor output shaft and the first left planet carrier. According to the hub motor two-gear transmission, seven different running states including first-gear driving, second-gear driving, neutral gear, reversing, first-gear regenerative braking, second-gear regenerative braking and low-speed sliding friction braking can be achieved through the control clutch and the controllable one-way clutch.

An electric work vehicle includes a housing, a motor to drive to a wheel, the motor being supported by the housing, a gearing including a plurality of gears, and a locking assembly including a pawl. The motor is connected to the gearing to drive the wheel. The locking assembly is operable to lock an outermost gear of the plurality of gears in a left-right direction of the electric work vehicle. The outermost gear includes a first diameter portion and a second diameter portion that is larger than the first diameter portion. The first diameter portion is located outside of the second diameter portion in the left-right direction of the electric work vehicle. The pawl is operable to engage with the first diameter portion to lock the outermost gear from rotating.

A hybrid transmission system with a multi-speed gearbox. The multi-speed gearbox is configured to rotationally couple a prime mover and an electric machine to different gear ratios during a hybrid drive mode. The multi-speed gearbox includes an electric drive interface gear positioned coaxial to a first primary shaft and a second primary shaft and idly mounted, free to spin, to the second primary shaft and an output shaft that includes an output shaft gear which is fixedly coupled thereto meshes with a gear on a secondary shaft.

A drive module assembly for use in a vehicle includes a housing defining a housing interior, and an electric machine including a rotor and a stator. The drive module assembly also includes a differential rotatably coupled to the rotor, a first input shaft rotatably coupled to the differential, a second input shaft rotatably coupled to the differential, a first counter shaft rotatably coupled to the first input shaft, a second counter shaft rotatably coupled to the second input shaft, a first output shaft rotatably coupled to the first counter shaft, and a second output shaft rotatably coupled to the second counter shaft. The differential is configured to receive rotational torque from the electric machine and configured to transmit rotational torque from the electric machine to the first and second input shafts.