231results about How to "Shift quickly" patented technology

The invention belongs to an automotive transmission and in particular discloses a double-clutch automatic transmission shift control method. The method is characterized in that: a duty ratio of a solenoid valve for controlling the engagement and separation of clutches in a double-clutch automatic transmission is adjusted to control a matched timing sequence of two clutches and respective joint speed and joint pressure thereof in the shifting process, so that the sum of transmission torque of a front clutch and a subsequent clutch adapts to the torque of an engine in the shifting process; and a shifting moment and a corresponding shift method are determined according to an accelerator pedal position signal acquired by a sensor, the rotating speed of the engine, the rotating speed and a clutch pressure signal of an input shaft of the front clutch and the rotating speed and a clutch pressure signal of an input shaft of the subsequent clutch. By the method, the shifting process is stable and rapid, the shifting quality is high, and the riding comfort is improved.

A shift controller controls a downshift to a low shift speed, spaced apart from a high shift speed by two or more steps, through an intermediate shift speed, by first releasing first and second shift release elements, then engaging a first shift engagement element, and finally engaging a second shift engagement element, while controlling the torque capacity of the second shift release element by feedback control. As a result of releasing the first and second shift release elements before engaging the first shift engagement element, it is possible to rev up an input rotation at maximum performance of an engine to reduce the time for shifting. As a result of the feedback control of the torque capacity of the second shift release element after engaging the first shift engagement element, a torque fluctuation at the intermediate shift speed can be reduced to avoid occurrence of an uncomfortable shift shock.

The invention discloses an automatic speed change gear with a torsion limiting clutch and a speed change shaft. The speed change gear comprises a high-speed drive gear, a low-speed drive gear, a high-speed driven gear and a low-speed driven gear, wherein the high-speed drive gear and the low-speed drive gear are arranged on a drive shaft, the high-speed driven gear and the low-speed driven gear are arranged on a driven shaft, and the high-speed drive gear, the low-speed drive gear, the high-speed driven gear and the low-speed driven gear are correspondingly and constantly meshed. The drive shaft is provided with the normally-closed torsion limiting clutch used for power connection of the high-speed drive gear and the drive shaft. A connection structure capable of synchronously rotating is formed by the low-speed drive gear and the drive shaft. A one-way overrunning clutch or a two-way overrunning clutch is arranged between the high-speed driven gear and the driven shaft and between the low-speed driven gear and the driven shaft respectively. The speed change shaft comprises the drive shaft, the high-speed drive gear, the low-speed drive gear and the normally-closed torsion limiting clutch, wherein the high-speed drive gear and the low-speed drive gear are arranged on the drive shaft and the normally-closed torsion limiting clutch is used for power transmission between the high-speed drive gear and the drive shaft. The drive end of the clutch is connected with the drive shaft through a spiral spline structure. The automatic speed change gear and the speed change shaft have the advantages that the speed change gear enables the automatic two-gear shifting function of forward transmission and the inverted transmission function to be achieved and is simple in structure and rapid in gear shifting; the high-speed inverted output torsion of the speed change shaft is larger than the forward output torsion.

The invention discloses a bicycle with a miniature box transmission on a middle axle. The bicycle comprises a frame device, a transmission device, a moving device and a safety device and is characterized in that: the middle axle of the frame device is provided with the miniature box transmission consisting of a box speed transformation device and a shifting device; the middle axle and an auxiliary axle are arranged in a box; a clutch sleeve and a driving gear are fixedly arranged on the middle axle; the right outer end of the middle axle is in movable fit with a middle axle driven gear and a chain wheel; a clutch sleeve and a driven gear are fixedly arranged on the auxiliary axle; and an auxiliary axle driving gear is fixedly arranged at the right outer end of the auxiliary axle and engaged with the middle axle driven gear. The bicycle has a small and compact structure, large transmission ratio range, high climbing capability, high level road speed, low production cost and high popularization value, is convenient to use, flexible and rapid to shift, easy to manufacture and easy to accept by bicycle enthusiasts and can particularly realize quick shifting under various road conditions.

A power transmission apparatus for a vehicle may include a first input shaft selectively connected to an output side of an internal combustion engine through a first clutch, a second input shaft disposed at the first input shaft without any rotational interference and selectively connected to the output side of the internal combustion engine through a second clutch, a motor/generator performing a function of a motor and a generator, and a planetary gear set including first, second, and third rotation elements such that the first rotation element is directly connected with the motor/generator, the second rotation element is selectively connected with the second input shaft so as to be in synchronization with each other, and the third rotation element is directly connected with the first input shaft.

The invention aims at solving a technical problem of providing an electronic control device and a realization method of an automatic automobile transmission of manual automatic integration. The electronic control device of the automatic automobile transmission of manual automatic integration comprises a microprocessor module, a power supply module, a signal collection module, a power drive module, a data storage module and a CAN transceiver module. The invention designs various stable and reliable signal collecting and processing circuits, adopts an optimal control method, designs the function of fault self-diagnosis and causes the controller to be characterized by fast and accurate gear shifting, stable and reliable work, etc. At the same time, an external data storage module and the CAN transceiver module are added, which causes the design to have good scalability. Based on the existing hydraulic transmission automatic transmissions (AT), the electronic control device improves the efficiency of gear-shift operation and has the advantages of good production inheritance, low investment cost, high efficiency, easy manufacturing, convenient control, etc.

In a hybrid-drive electric vehicle, upon request of gear shifting of a transmission (2), a clutch (3) is first disconnected and the transmission (2) is set to a neutral position. The rotating electric generator 4 is then operated in a motor mode or a power generating mode so that a rotational speed of an input shaft of the transmission (2) reaches a region of a synchronizing rotational speed in accordance with a requested gear position. When the rotational speed of the input shaft of the transmission (2) reaches the region of the synchronizing rotational speed, the gear position of the transmission (2) is changed over from the neutral position to the requested gear position. Thus the rotation synchronizing time for the gear shifting in the transmission (2) is reduced, making it possible to perform the gear shifting for a short period of time.

The present invention provides a method which controls the hydraulic pressure of a clutch (an engine clutch) disposed between an engine and a drive motor, thus reducing gear shifting shock and vibration. The method comprises a slip preparation step of determining that gear shifting is required and reducing the hydraulic pressure of the clutch to a preset target hydraulic pressure from a point in time at which the gear shifting is required. The method further comprises a slip maintaining step of feedback-controlling the hydraulic pressure of the clutch such that a slip rate of the clutch is maintained constant after the hydraulic pressure of the clutch reaches the target hydraulic pressure; and a clutch lock-up completing step of increasing the hydraulic pressure of the clutch, from a point in time at which the gear shifting is completed, to a maximum hydraulic pressure for making a lock-up state of the clutch.

To change the transmission gear ratios of a bike and reduce its dimensions as much as possible. The derailleur, located between the two cog sets (2,3), is the latest, newest and a very important device. Both cog sets (2,3) have parallel and reversed rotating axles so that the big diameter cog (5), located on the primary cog set (2) corresponds to the small diameter cog (6), located on the secondary cog set (3). The primary cog set is assembled on the primary axle and is linked to the secondary cog set by a primary looping ring roller chain (8); the secondary cog set (3) supports the single external cog (15), linked to the rear wheel by the secondary chain (8). When the derailleur is externally activated, it shifts the primary chain (8) to the primary and the secondary cog sets (2,3), having different diameters, so as to change gear.

The invention discloses a gear shifting and sliding mechanism for a carbon-free cart for traveling up and down a hill. The gear shifting and sliding mechanism comprises a power transmission module and an electronic control module. The power transmission module comprises a rear driving wheel half axle, a rear driven wheel half axle and a winding shaft provided with a cone axle sleeve. The rear driving wheel half axle is connected with an inside and outside spline sleeve capable of axially moving through a spline, and the sleeve is connected with the winding shaft through two pairs of constant mesh gears. The electronic control module comprises a single chip microcomputer, an infrared tube, a wheel speed sensor and two direct current type electromagnets capable of making the constant mesh gears shift gears. When the carbon-free cart travels up and down the hill, the single chip microcomputer sends different instructions according to electrical signals sent by the infrared tube and the grating wheel speed sensor to control the different direct current type electromagnets to be powered on or powered off, so that a power transmission line is converted between the two pairs of constant mesh gears to finish gear conversion between a level road and a ramp. The gear shifting and sliding mechanism has the advantages of being capable of performing intelligent detection, accurately changing driving force, saving gravitational potential energy and making the cart have a uniform traveling speed and the like.

The invention discloses a quick gear-shift control method and control system for an electric vehicle gearbox. The quick gear-shift control system comprises a PID (Proportion Integration Differentiation) controller module and a data acquiring module, wherein the data acquiring module acquires the rotation speed of the gearbox output end, the current rotation speed of a motor and the shift gear signal of the driver; the data acquired by the data acquiring module is transmitted to the PID controller module which adjusts the rotation speed of the motor based on the data, so that drive and driven gears quickly and synchronously finish the gear-shift operation, thus the gear-shift time is greatly shortened.

The invention relates to an electromobile power assembly and an application of the electromobile power assembly. The electromobile power assembly comprises an integrated drive motor, a transmission, a clutch, a differential mechanism and an oil pump; a motor shaft of the drive motor is in drive connection with one end of an input shaft of the transmission; the other end of the input shaft of the transmission is connected with the oil pump; the input shaft of the transmission is in drive connection with a differential mechanism gear of the differential mechanism through a first transmission gear and a second transmission gear; the clutch is arranged on the input shaft of the transmission and is in drive connection with the first transmission gear; and the drive motor is provided with a motor sensor. The electromobile power assembly effectively switches the gear according to the actual condition of an electromobile, so that the operating conditions of the electromobile better accords with the actual road condition, the working efficiency of the electromobile is improved, meanwhile, the performance of the existing electromobile is optimized, the starting is stable, the gear is smoothly and rapidly switched, the operation of the electromobile is efficient and safe, and the smoothness and the reliability of the operation the whole electromobile are improved.

A method of gear shifting in a servo-controlled gearbox. The method generates an oscillation on angular velocities of primary and secondary shafts of the gearbox, separates the primary shaft from the secondary shaft thus disengaging a first current gear when the oscillation has taken the angular velocity of the primary shaft close to the angular velocity that the primary shaft must assume to engage a second next gear, and connects the primary shaft to the secondary shaft thus engaging the second next gear when the oscillation has led the angular velocity of the secondary shaft to equalize the current angular velocity of the primary shaft multiplied by the transmission ratio of the second next gear.

The invention comprises a hydro-mechanical continuously variable transmission (HMCVT) that uses a planetary gear system to provide a combination of hydraulic and mechanical power for a vehicle or stationary equipment. The invention further comprises various ancillary elements to improve the performance of the HMCVT.

The invention relates to a double-clutch automatic transmission device which structurally comprises internal and external input shafts (10, 20) which are coaxially arranged, an auxiliary shaft (30) and a reverse gear shaft (40) which are parallel to the two input shafts, a double-clutch assembly (70), a differential assembly (50), multiple groups of normally engaged gear trains arranged on all the shafts as well as multiple groups of synchronizer devices (62, 64, 66 and 68) which are used for realizing selection of all gears. The double-clutch automatic transmission device can provide eight forward gears at most and a reverse gear, so that the transmission device has more excellent comfort performance and lower oil consumption. As two groups of optional reduction gear trains are adopted, each gear train can realize two different gears, so that one auxiliary shaft and assemblies thereof can be reduced, and the transmission cost is reduced. The double-clutch automatic transmission device has the characteristics of simple structure, large quantity of gears, low cost and the like.

The present invention relates to a motorcycle intelligent control system. Said system is mainly composed of signal processing unit, signal conversion unit and main control unit. Said signal processing unit is connected with speed sensor, transmission display circuit and engine pulse coil; the signal conversion unit is connected with shifting actuator contact-connection component displacement sensor, accelerator control mechanism displacement sensor and accelerator actuating mechanism displacement sensor; the main control unit is connected with gearshift drive circuit and accelerator drive circuit, the gearshift drive circuit is connected with gearshift actuating mechanism and the accelerator drive circuit is connected with accelerator actuating mechanism. Said invention also provides a motorcycle intelligent control method. Said invention mainly is used in motorcycle using automatic clutch engine.

The invention discloses a gear-shifting control method for a driving intention change during a kick-down process in the field of automatic control of transmissions. The gear-shifting control method is characterized in that real-time monitoring of an accelerator pedal is maintained when a transmission starts the kick-down process, the driving intention is judged according to a driving state when the accelerator pedal is released, and the state of the transmission is adjusted from kick-down control to corresponding upshift control according to a judgment result. The gear-shifting control method aims to solve the problems that when a driver steps on an accelerator vigorously at a high rate during a stable driving process of a vehicle, a DCT (Dual Clutch Transmission) does kick-down action automatically to obtain stronger power output, and when the driver releases the accelerator at a higher rate before the DCT completes the kick-down action, a target gear obtained by the DCT through judgment is changed into one higher than the current kick-down target gear and immediately the upshift action is carried out. Therefore, through the gear-shifting control method, a stable and quick gear-shifting process can be realized actively, and the gear-shifting quality is remarkably improved.

The invention discloses a non-impact speed-change transmission gear wheel, which is formed by a tooth ring and a rim. Wherein, the tooth ring and the rim are connected via the tooth-embedded mesh device with flexible space; the tooth ring and the rim are axially limited via the clamp plates; the clamp plates are fixed on the tooth ring; said tooth-embedded mesh device comprises: mesh space between the mesh tooth that connecting the tooth ring and the rim; the flexible element can make the mesh tooth of rim at the middle of space while do not transmit torque to form a flexible space; the inner hole of rim is a inner-pattern key or a smooth hole with key groove. The invention has simple structure, which can avoid the lower shift speed, the impact and noise when meshing the gear wheels, while it can be used in duplicate gear or single gear wheel, or different speed changers.

In a vehicle power transmission device equipped with an automatic clutch, the gear-change for shifting up is effected suppressing a sudden increase in the engine rotational speed that results when the automatic clutch is disconnected, preventing deterioration in the drive feeling caused by the change of gear such as a shock due to the change of gear. At the time of changing the gear for shifting up, an engine controller (11) executes a pre-reduction control for decreasing the output of the engine 1 for a predetermined period of time prior to disconnecting the clutch (3). Since the engine output has been decreased, the rotational speed of the engine (1) does not suddenly rise despite the vehicle traveling load is removed as a result of disconnecting the clutch 3. A target value for decreasing the engine output is suitably set depending upon the vehicle operating conditions, and a sudden increase in the rotational speed is prevented in all gears while relaxing the shock of gear-change caused by a sharp change in the acceleration.