95results about How to "Wide range of speed ratio" patented technology

A two mode power-split electric hybrid system and a method of control said hybrid system. The hybrid system is comprised of an engine, a transmission, an energy storage device and a control system for effecting said control method. Said transmission is a reconfigurable power split system, comprising a power-splitting device and an output power path selecting device. The power splitting device includes a compound planetary gear system and two electric machines which form a local series electric hybrid system. Said transmission regulates the output power state of said hybrid system by controlling power flow within said local series hybrid system. The hybrid system provides at least two operating mode, an output power split mode and a compound power split mode. Said control system includes multiple controllers and control modules. In accordance with the operating conditions of the hybrid system, said control system computes and sets system power requirement, allocates ob board power resources and sets engine operating speed and torque. In addition, said control system sets the operation mode of the transmission and controls the engine speed by adjusting operating torque of electric machines, based on the differential signal between reference engine speed and actual engine speed. Said control system is also capable of controlling engine torque through engine controller.

The invention relates to the technical field of mechanical power transmission, in particular to a driving device used for a hybrid car. The driving device comprises a motor input end, a first motor, a second motor, a single-row planetary system and a double-row Ravigneaux planetary system. The motor input end is connected with a first inner gear of the single-row planetary system, a rotor of the first motor is connected with a sun gear of the single-row planetary system, and a planetary frame of the single-row planetary system transmits power to a big sun gear and a small sun gear of the Ravigneaux planetary system. A rotor of the second motor is connected with a public planetary frame of the Ravigneaux planetary system, and power is transmitted by a second inner gear of the Ravigneaux planetary system. The motor achieves gear reversing. The driving device improves motor working efficiency of the motor, achieves serial connection, parallel connection, mixed connection, recovering of brake energy and the like, achieves the aim of reducing discharge and prolongs actual service life of a pure electric vehicle through a serial connection mode.

The invention provides a novel hybrid power coupling mechanism and a motor vehicle. The novel hybrid power coupling mechanism comprises a fuel driving mechanism, a single-planet-row gear mechanism, aclutch, an intermediate connecting shaft structure, a composite-planet-row gear mechanism, a first electric driving mechanism, a second electric driving mechanism and a power output mechanism, whereinthe fuel driving mechanism, the first electric driving mechanism and the second electric driving mechanism are connected for output through the single-planet-row gear mechanism and the composite-planet-row gear mechanism; and finally power output is implemented by the power output mechanism. By the novel hybrid power coupling mechanism and the motor vehicle, various power driving modes and outputspeed ratios can be provided according to actual conditions, the integral system efficiency can be high, the structure can further be simplified, and requirements to the motor are reduced.

The invention discloses a multi-flexible beam vibration control device and method based on synchronous belt drive. The device comprises a flexible beam body, a detection part and a control part. The flexible beam body comprises three flexible beams of the same size. The detection part comprises a piezoelectric sensor and an acceleration sensor, wherein the piezoelectric sensor and the acceleration sensor are respectively arranged on the flexible beams. The control part comprises a synchronous belt drive control system and a piezoelectric drive control system. The vibration signal of the flexible beam structure is detected by the piezoelectric sensor and the acceleration sensor. A synchronous belt driven by a servo motor and a piezoelectric drive are used as an actuator for suppressing vibration. The device can be used to study the influence and vibration control of gravity, synchronous belt gap characteristics, synchronous belt elasticity and other factors on the vibration of the flexible beam structure.

The invention discloses a six-speed mechanical speed changer of car, comprising an input axle connected with the engine, first, second, fifth, and sixth output axles, third, and fourth backward output axles and semi axle arranged at one side of the input axle. The invention uses three axle to realize six forward shifts, to obtain compact structure, compared with five-speed hand-operated speed changer, to obtain shorten axle size, low differential speed, and simple shift. The invention has lower shift time and differential speed than general five-speed hand-operated speed changer.

The invention discloses a light-weight speed changing device and a bicycle adopting the light-weight speed changing device. The speed changing device comprises a differential mechanism case, a gear shifting shaft, a gear shifting chain wheel group and a gear shifting rod, wherein the axis of the gear shifting shaft is parallel to the axis of the differential mechanism case, the gear shifting chain wheel group comprises a gear shifting driving chain wheel and a gear shifting driven chain wheel, the gear shifting driving chain wheel is arranged on the gear shifting shaft in a sleeving way, the gear shifting driven chain wheel is arranged and connected on the differential mechanism case in a sleeving way, and is connected with the gear shifting driving chain wheel, and an annular convex block is arranged on the circumferential surface of the gear shifting rod. The annular convex block of the gear shifting rod moves to a connecting part of the gear shifting driving chain wheel and the gear shifting shaft, so that the gear shifting driving chain wheel and the gear shifting shaft are locked, input force is provided for the gear shifting shaft, the gear shifting driving chain wheel rotates along with the rotation of the gear shifting shaft, different bicycle speeds are realized through different transmission ratios of the gear shifting chain wheel group, the structure is light and convenient, the influence on the running speed of the bicycle is smaller, in addition, the occupied space is small, the small size is realized, the riding is easy, on the other hand, the gear shifting rod can be respectively moved in the motionless state and in the operation state of the bicycle for realizing the large-speed-ratio gear shifting, the fast starting is convenient to realize, and more time and more labor are saved.

The invention relates to a soft-start reducer. A bevel gear input mechanism in a box body is connected with a planetary gear transmission mechanism connected with the output of the output shaft. A braking mechanism comprises a viscous liquid brake, an acceleration bevel gear shaft, an acceleration bevel gear, an acceleration gear shaft and an acceleration gear, wherein the input of the viscous liquid brake is connected with one end of the acceleration gear shaft; the acceleration gear shaft is supported in the box body; the acceleration bevel gear is sleeved on the acceleration gear shaft; the acceleration bevel gear is meshed with other end of the acceleration bevel gear shaft; and the acceleration gear shaft is provided with an acceleration gear meshed with the outer ring of the internal and external gear rings of the planetary gear transmission mechanism. The external viscous liquid brake brakes the internal and external gear rings of the planetary gear transmission mechanism through a bevel gear acceleration braking mechanism and a bevel gear reduction input mechanism stabilizes the input power, so the soft start of the reducer under the loaded condition of heavy equipment is realized. The reducer has a compact structure, small installation space, wide speed ratio range, stable transmission performance, high efficiency and long service life and is favorable for model selection of users.

The invention belongs to the technical field of hybrid automobiles and in particular relates to a hybrid transmission device. A double-mode hybrid transmission device for a commercial vehicle comprises a motor controller, three planet rows, two motors, a first clutch and a first brake, wherein the three planet rows are coaxially arranged; the three planet rows are an internal and external engaged double-planet row, a common planet row and a speed reducing planet row; the internal and external engaged double-planet row and the common planet row form a power splitting mechanism so that double-mode power splitting can be realized. Double modes are a speed dividing and moment gathering power splitting mode and a speed dividing and speed gathering power splitting mode. When the two modes are switched, the clutch has no speed difference so that a mode switching control system can be simplified. Compared with single mode power splitting, the double-mode hybrid transmission device for the commercial vehicle has the advantages that the speed ratio range of a variable transmission device can be enlarged, the torque and power of the motor can be reduced and the power density of the transmission device can be increased.

The invention discloses a planet gear driven mechanical stepless automatic transmission, which comprises a power input shaft, a hollow shaft I, an intermediate shaft, a power output shaft, a reversing mechanism, a big gear ring I, at least two groups of planet mechanisms uniformly distributed in the big gear ring I, a driving gear I, an oil pump, a driven gear I arranged on the input shaft of the oil pump, a piston type oil cylinder, a pressure adjusting valve and a gear rack component. The power is transmitted to a driving gear II, a driving pinion, an idle wheel, an intermediate gear ring and a big gear ring of the planet mechanism through the power input shaft and finally gathered to the intermediate shaft; stepless automatic speed change can be realized by controlling an automobile engine accelerator and adjusting the pressure adjusting valve; reversing, idling or advancing operation is realized by the reversing mechanism; and the transmission has the characteristics of energy conservation, environment friendliness, wide application range and the like.

The invention discloses a hybrid power speed changer transmission structure and a vehicle. An engine and a motor are included, and an input shaft of a speed changer is connected with an output shaft of the engine and an outer gear ring and further connected with a speed changer shell through a one-way clutch or a brake. The motor is connected with the input shaft of the speed changer through a fourth clutch, and a motor output shaft is connected with a sun gear. A planet row output gear is connected with a planet carrier. A first input gear, a first-gear driving gear and a third-gear driving gear are arranged on a first intermediate shaft, a second input gear, a reverse gear, a second-gear driving gear and a fourth-gear driving gear are arranged on a second intermediate shaft, and a first-gear driven gear, a second-gear driven gear, a third-gear driven gear, a fourth-gear driven gear and an output shaft main reduction gear are arranged on an output shaft of the speed changer. The first input gear and the second input gear are both meshed with the planet row output gear and correspondingly output power to the first intermediate shaft and the second intermediate shaft through a first clutch and a second clutch. The reverse gear is meshed with the first-gear driven gear and outputs power to the second intermediate shaft through the third clutch. The transmission efficiency is high, engine intervention and exit are smooth, and the axial size is small.

The invention discloses a variable-speed flywheel. The variable-speed flywheel comprises a tower wheel, a wheel hub and a freehub, and further comprises a connecting ring and a ring end cap, wherein multiple layers of gear rings of which diameters are increased successively are in lap joint to form the tower wheel; the tower wheel comprises a first gear ring with the maximum diameter and a secondgear ring with the minimum diameter; the tower wheel is in transmission connection with the wheel hub; the inner diameter 2r of the second gear ring is smaller than the outer diameter 2R of the freehub; one end of the freehub is detachably connected with the connecting ring; the ring end cap comprises a column and a cover; the column is connected with the connecting ring; and the cover is in contact with the second gear ring. The variable-speed flywheel has the advantages that the flywheel is universal to a standard freehub, and is low in cost and wide in transmission velocity ratio.

The invention provides a multi-clutch transmission driving device comprising a first dual-clutch transmission and a second dual-clutch transmission. An output shaft of the first dual-clutch transmission is connected with a shell body of the second dual-clutch transmission. According to the multi-clutch transmission driving device, a multistage clutch structure in one transmission is replaced by the two dual-clutch transmissions, speed ratio range widening is realized, meanwhile the structure is simple, and the reliability is strong.

The invention provides a three-gear electric assembly and a speed ratio determination method thereof. The three-gear electric assembly includes a motor, a differential mechanism and a three-gear transmission, the three-gear transmission is connected between the motor and the differential mechanism so that a first-gear speed ratio, a second-gear speed ratio and a third-gear speed ratio can be generated between the motor and the differential mechanism, and the speed ratio stage difference between the second-gear speed ratio and the third-gear speed ratio is larger than the speed ratio stage difference between the first-gear speed ratio and the second-gear speed ratio. The three-gear electric assembly can reach a large speed ratio range, and the motor works in a high-efficiency area for a long time, so that a carried whole vehicle has large climbing ability and high maximum vehicle speed, gear shifting is smooth, and the comfort is better.

The invention discloses a hybrid power drive system which comprises an engine, a first motor, a second motor, a planetary gear device, a clutch gear device, an engaging device and a switch device; theengine and the first motor are both connected with the planetary gear device; the clutch gear device is arranged between the first motor and the planetary gear device; the planetary gear device comprises a first rotating element, a second rotating element and a third rotating element; the first rotating element is connected with the first motor; the second rotating element is connected with the engine; the third rotating element is connected with the engaging device; the clutch gear device comprises a clutch, a clutch gear and an engaging element; the clutch gear and the engaging element areconnected to the clutch; the clutch gear is connected to the output end; the engaging device is engaged to the third rotating element and the engaging element, or the third rotating element and the switch device or the third rotating element only; the switch device locks or unlocks the third rotating element; and a second motor is connected to the output end. The hybrid power drive system providedby the invention is good in platformization.

The invention discloses a three-level planetaryary gear train automatic transmission for a vehicle. The transmission can achieve eight forward gears and one reverse gear and comprises a shell, three planetary gear sets, a plurality of transmission shafts and six combining elements. Each planetary gear set comprises a sun wheel, a planetary wheel and a tooth ring. The two planetary gear sets on the two sides are single-planetary-gear planetary gear sets, and the middle planetary gear set is a double-planetary-gear planetary gear set. The combining elements are selectively combined and separated in the gear shifting process to achieve different transmission ratios, and accordingly the transmission can achieve the eight forward gears and one reverse gear. The two planetary gear sets share one planetary gear, mutual cooperation of the six combining elements is utilized, excessive combining elements are not needed, the gear shifting performance is improved, the mass and the size of the transmission are reduced, and the dynamic property and the transmission efficiency of the transmission are improved.

The invention provides a wheel hub and wheel reducer assembly, including hub inner bearing, wheel hub, wheel hub outer bearing, reducer shell assembly, cross shaft, half shaft, outer bevel gear, conical planetary wheel and inner bevel gear. The present invention adopts a planetary bevel gear reducer. Compared with the prior art, the present invention can realize a wheel speed ratio between 2-2.7, thereby expanding the speed ratio range of the wheel reducer, and the structure is simplified and the weight is light. , When repairing the reducer, it is not necessary to remove the brake drum and other parts, which is convenient for maintenance.

The invention discloses a three-power-source coupling hybrid power system suitable for a heavy truck, which belongs to the technical field of transmission systems of heavy trucks and comprises a shell, a generator, a driving motor, an engine and a double-planet-row power coupling mechanism. The engine is connected with the rear planet carrier through a central shaft; the rear sun gear is connected with an inner hollow shaft connected with a generator; the front sun gear is connected with an outer hollow shaft connected with a driving motor; and a sliding sleeve locking device is arranged on the shell. Three powers are coupled under different conditions through a double-planet-row power coupling mechanism, the speed of a rear sun gear and the speed of a rear planet carrier are adjusted through a generator and an engine respectively, stepless speed change and decoupling of the rotating speed of the engine and the vehicle speed are achieved, and flexible switching of various working modes is achieved by adjusting a sliding sleeve locking device. Non-interruption of output power in the gear shifting process under each working mode is realized through torque compensation of the generator and the engine; and the comfort, safety and economical efficiency of the whole vehicle are improved while the dynamic property is ensured.

The invention relates to a stepless variable-speed mechanism and a transmission system, in particular to a wedge claw type stepless variable-speed mechanism. The wedge claw type stepless variable-speed mechanism comprises a fixed center shaft, wherein the fixed center shaft is provided with a dual-offset center regulating mechanism, a vector displacement limiting mechanism, a wedge claw type primary variable-speed mechanism and a wedge claw type secondary variable-speed mechanism; and the structure of a wedge claw subassembly in the wedge claw type primary variable-speed mechanism is the same with that of a wedge claw subassembly in the wedge claw type secondary variable-speed mechanism. The transmission system with the wedge claw type stepless variable-speed mechanism comprises a fixed center shaft, the wedge claw type stepless variable-speed mechanism, a primary planetary moving shaft wheel train and a secondary planetary moving shaft wheel train; and the wedge claw type stepless variable-speed mechanism is arranged between an inputting belt pulley and an outputting belt pulley on the fixed center shaft. Owing to the structure, the transmission efficiency is quite high, a speed ratio range is quite wide, the weight is light, the size is small, and requirements on large torque and small size can be met. The transmission system has the advantages that the transmission system can bear large impulsive load, and is small in speed regulating resistance, high in stability, low in power loss, low in heating, small in noise and wide in application range.