55results about How to "Short shift times" patented technology

The invention discloses a two-gear transmission for an electric vehicle. The two-gear transmission is applicable to front-engine front-drive or rear-engine rear-drive vehicles, is positioned at the output end of a driving motor, and is of a three-shaft structure. The two-gear transmission comprises an input shaft assembly, an intermediate shaft assembly, an output assembly and a case assembly, wherein rotation central lines of the input shaft assembly, the intermediate shaft assembly and the output assembly are parallel; the input shaft assembly, the intermediate shaft assembly and the output assembly are mounted and supported on the case assembly. According to the two-gear transmission, the transmission efficiency is high, the structure is simple, the transmission ratio is liable to match, and the production and manufacturing cost is relatively low; the transmission torque is large, gear shifting control is accurate, reliability is high, and performance requirements that power is not interrupted during the gear shifting process, the time of the gear shifting process is short, and the gear shifting process is smooth can be met; the lighter driving motor can be adopted, and the cost of the driving motor is reduced; and the driving motor and a transmission system are integratedly designed, so that the comprehensive cost of an electric driving system is greatly reduced, and the loading compatibility on different vehicles is higher.

A drive system (1) for a motor vehicle has a double clutch transmission (2), with two component transmissions (3, 4), a double clutch (5) and an output shaft (6). An internal combustion engine (7) optionally can be connected operatively to one of the component transmissions (3, 4) via the double clutch (5) to drive the output shaft (6). A gear drive (8) is arranged rotatably on the output shaft (6). An electric machine (9) can be connected operatively via the gear drive (8) to at least one fixed gear (16, 17, 21) of one of the component transmissions (3, 4) to drive the output shaft (6) and/or to recover kinetic energy from the drive system (1).

The invention relates to the field of electric automobiles and in particular relates to a three-clutch three-gear speed change transmission device for changing the speed of an electric automobile and a three-clutch method thereof. The three-clutch three-gear speed change transmission device comprises a box body, wherein an input shaft and an output shaft sleeved on the input shaft are arranged in the box body; the input shaft is connected with the output shaft through a first clutch; a first middle shaft and a second middle shaft are arranged in the box body; the first middle shaft is connected with the second middle shaft through a second clutch; a third middle shaft and a fourth middle shaft are arranged in the box body; the third middle shaft is connected with the fourth middle shaft through a third clutch; and the shafts are provided with gears which have different sizes and are meshed with one another. When the second clutch is controlled to be closed, the automobile can get relatively large traction and relatively large torque at a low speed; when the first clutch is closed, a motor is in a stable running state; when the third clutch is closed, the rotating speed of the motor is increased to a designed value; and therefore, the requirement of the electric automobile on high rotating speed is met.

Shift arrangement for a motor vehicle transmission. At least one gear stage can be engaged and disengaged by means of an associated shift clutch. A spindle which is aligned along a spindle axis, has a spindle thread and is rotatably mounted on a housing. A nut has a nut thread, which is in engagement with the spindle thread. A shift finger is formed on the nut. At least one shift rod is mounted movably on the housing and can be coupled to the shift clutch. Provided on the housing are a radial groove, in which the shift finger engages in an axial base position of the nut and within which the shift finger can be turned, and an axial guide, which axially adjoins the radial groove and in which the shift finger can engage in order to hold the nut in the circumferential direction, thus ensuring that said nut is moved axially in a first axial direction when the spindle is rotated.

Clutch arrangement for a motor vehicle gearbox. The clutch arrangement has a housing and a clutch. The clutch is arranged in the housing and is arranged concentrically with a shaft, which extends in a longitudinal axis. The shaft is supported on the housing by means of a first shaft bearing adjacent to the clutch and by means of a second shaft bearing spaced at an axial distance from the clutch. The clutch arrangement has an actuator arrangement for actuating the clutch. The actuator arrangement is designed to exert an actuating force on the clutch in a first longitudinal direction. The actuator arrangement here being axially braced on the housing and a force flux being introduced into the shaft as a result of the actuating force. The first shaft bearing is arranged so that the force flux introduced into the shaft can be axially braced on the housing by way of the first shaft bearing.

Shift arrangement for a motor vehicle transmission which has at least two gear stages that can be engaged and disengaged by means of different rods has a housing. At least two push rods are mounted on the housing in such a way as to be movable in an axial direction between a neutral position and at least one shift position and which can each be coupled to a shift clutch or a shift clutch pack. At least two return rods are mounted on the housing in such a way as to be movable in an axial direction between a neutral position and at least one shift position. The return rods are each coupled to one of the push rods in such a way that a push rod and the return rod associated therewith are moved in opposite axial directions. A shift member is mounted on the housing in such a way that a shift cam of the shift member can be aligned with a push rod or with a return rod for the purpose of selecting, and can transmit a pushing force to the selected rod and move it in a first axial direction for a shift operation. At least one driving feature is arranged on the shift member in such a way that, before or during a shift operation on a selected rod, the driving feature can transmit a pushing force to at least one unselected rod in order to move said unselected rod into the neutral position.

A tractor power gear shifting and power reversing transmission device comprises a power gear shifting module and a power reversing module, wherein the power gear shifting module comprises an input shaft and an output shaft; a plurality of clutches are mounted on the input shaft and the output shaft according to the number of gears; a plurality of meshed gears I are also arranged on the input shaft and the output shaft; the front end of the input shaft is in transmission connection with an engine; the rear end of the input shaft is connected with a tractor PTO device; the power reversing module comprises a reversing shaft and an idler shaft; the reversing shaft is provided with a forward clutch, a backward clutch and a gear II; the gear II is connected with both the forward clutch and the backward clutch; the rear end of the reversing shaft is connected with an auxiliary variable-speed driving shaft of a rear box body of a gearbox; two gears III are fixedly arranged on the idler shaft to form two-stage transmission; the power gear shifting module and the power reversing module are in gear-meshing transmission with each other; and the input shaft, the output shaft, the reversing shaft and the idler shaft are arranged by the adoption of parallel space. The tractor power gear shifting and power reversing transmission device has the advantages that the gear shifting time is short; the number of the gears is large; and the repairing and the maintenance are convenient.

The invention relates to an interlocking type gear shifting device of an electric automobile. The interlocking type gear shifting device comprises a first gear shifting mechanism and a second gear shifting mechanism. The first gear shifting mechanism and the second gear shifting mechanism are both arranged in a transmission box, an interlocking mechanism is arranged between a first worm gear and a second worm gear, the first worm gear is interlocked with the second worm gear through the interlocking mechanism, and a sensor detects the rotation states of the first worm gear and the second worm gear. By means of the interlocking type gear shifting device of the electric automobile, gear shifting time is short, a gear selecting device is not required to be arranged additionally, and the structure is compact. The cost of a transmission is greatly reduced, and large-batch production is facilitated. Interlocking of the two worm gears is achieved through an interlocking steel ball, the interlocking structure prevents gear disorder caused by the fact that a motor is subjected to external disturbing or receives wrong control signals and a gear shifting motor works simultaneously, and the device is reliable in performance and suitable for the multi-gear electric automobile. The device has excellent expansibility and can be designed into a multi-gear shifting device according to actual design requirements of automobiles.

The invention relates to a transmission shifting mechanism for all-electric cars. According to the technical scheme, the transmission shifting mechanism mainly comprises a shifting motor, linear bearings, a shift fork shaft, a triple-cone synchronizer, a self-locking pin, a shift fork, a shift block, a shift shaft, a buffer, an angle sensor and the like. The buffer is connected with the shifting motor. The shift shaft is mounted on the buffer in a connected manner through splines. Two ends of the shift shaft are provided with the angle sensor and the shift block respectively. An oil seal is disposed between the angle sensor and the shift block. The shift block is inserted into a shift fork hole. The shift fork is connected with the shift fork shaft through the pin. The shift fork shaft is connected to front and rear shells through the linear bearings. The shift fork is inserted into a gear ring of the triple-cone synchronizer. The transmission shifting mechanism has the advantages that shifting force is small, shifting is stable, shifting time is short, and accordingly ECT shifting is higher in quality and reliability.

The invention discloses an automatic gear shifting control device of a wheeled tractor. The device comprises a hydraulic control main oil path system, a clutch control oil path system, a gear shiftingcontrol oil path system and a tractor ECU for controlling the three systems; the clutch control oil path system is connected with the hydraulic control main oil path system through a pressure limiting valve, the gear shifting control oil path system is connected with the hydraulic control main oil path system and the clutch control oil path system through a gear control valve and a pressure reduction valve, and the hydraulic control main oil path system comprises an energy storage device, an oil tank, a hydraulic pump and an oil returning electromagnetic valve. The tractor ECU is further connected with an accelerator pedal used for detecting the accelerator opening degree changes and provided with a position sensor; the invention further comprises a control method of the device. Parameters of the tractor engine accelerator opening degree and the speed change are adopted to serve as gear shifting basis, gear shifting labor saving and convenient operation can be achieved, operation strength of a driver is effectively reduced, and speed change gear shifting smoothness of a high-power tractor in the work running process can be improved.

A transmission transmission device, the transmission transmission device mainly includes a clutch, a clutch controller, a microcontroller, an input cone, an output cone and an intermediate wheel. The input cone and the output cone are formed by combining multiple cone rings. The busbar of the ring coincides with the busbar of the cone barrel, and there are gears on the outer edge of the cone ring. The gears are in a sawtooth shape. Between the barrels, the intermediate wheel has two sets of claws, which can rotate along the axis of the intermediate wheel, and can also adjust the angle with its own axis. When the cone barrel bevel ring gear is used, a gear transmission and speed change function of the transmission transmission device is realized. When the intermediate gear is switched and coupled to another set of input cone barrel bevel ring gears and output cone barrel bevel ring gear sets with different diameter ratios, The multi-gear speed change function of the transmission speed change device is realized.

The method involves setting a starting value for a pressure (13) in a starting phase, where the starting value is smaller than a transmission minimal value. The overrun of a clutch (2) transmits a torque during the pressure application. An operating value is set for the pressure after completing the starting phase. The target value is higher than the transmission minimal value of the clutch. The presetting of the operation value is performed immediately after setting the starting value.

The invention relates to an electric drive device with double motors and single planetary gear train, which comprises a first drive motor (16), a planetary gear train (100), a second drive motor (13), a wet clutch (104), and a planetary gear train (100 ) includes a sun gear (101), a ring gear (102), a planet carrier (103) and a planetary gear housing, the first drive motor (16) is connected to the sun gear (101), and the ring gear (102) is connected to the The housings of the planetary gear train are fixedly connected, the second drive motor (13) is connected to the planet carrier (103), one end of the wet clutch (104) is connected to the sun gear (101), and the other end is connected to the planet carrier (103) connected. Compared with the prior art, the present invention has the beneficial effect that it can realize two-speed gear shifting without power interruption, while achieving the purpose of decelerating and increasing the torque of the first drive motor and meeting the power requirements of the vehicle, through the wet clutch that is The shifting process can be completed, and the shifting process is stable, the shifting time is short, and the driving comfort is good.

The invention provides a gearbox transmission system. The gearbox transmission system comprises a first input shaft, a second input shaft, a first confluence gear, a first transmission structure unit and a second transmission structure unit, a second confluence gear, an intermediate shaft, a first synchronizer gear and a second synchronizer gear, a third confluence gear, a fourth confluence gear and a fifth confluence gear, a planet row, a first synchronizer, a second synchronizer, an L/H gear shifting synchronizer, and an output shaft. The transmission structure is compact, the arrangement space is saved, and no interruption of power when a vehicle climbs a slope can be guaranteed.

The invention discloses a stepless variable drive system for series dual-motor differential power dividing. The system comprises an engine output/differential input shaft, a first motor, a second motor, a motor controller, a power dividing device, a clutch, a gearbox, an engine power output shaft and a storage battery; the first motor and the second motor are connected in series, power of an engine is transmitted to the first motor through the engine output/differential input shaft for power generation, and meanwhile, the engine output/differential input shaft outputs power outwards through the power dividing device, the clutch and the gearbox to form a first power path; the first motor supplies power to the second motor and the storage battery through the motor controller, and the secondmotor outputs power outwards through the power dividing device, the clutch and the gearbox to form a second power path. The stepless variable drive system has the two power paths of mechanical power and electric power.

The invention discloses a parallel dual-motor differential power dividing continuously variable transmission system. The parallel dual-motor differential power dividing continuously variable transmission system is connected with an engine output shaft and comprises the engine output shaft, a first motor, a second motor, a motor controller, a differential mechanism, a clutch, a gearbox, a power output shaft and a storage battery; the first motor and the second motor are arranged in parallel, the engine output shaft transmits power of the engine to the first motor for generating electricity, meanwhile, the engine output shaft outputs power outwards to form a first power path through the differential mechanism, the clutch and the gearbox, the first motor supplies power to the second motor andthe storage battery through the motor controller, and the second motor outputs power outwards to form a second power path through the differential mechanism, the clutch and the gearbox. Accordingly,two power paths of mechanical power and electric power can be achieved.