254 results about "Shift systems" patented technology

A family of new bicycle shifting systems incorporate improved derailleur designs that are controlled by sealed hydraulic actuators. The shifting systems (i) a hydraulically-actuated, manually-powered front and rear derailleur shifting system, (ii) a hydraulically-actuated, power-assisted front and rear derailleur shifting system with manual control, and (iii) a hydraulically-actuated, power-assisted front and rear derailleur shifting system in which the shifting sequence for the rear derailleur is controlled automatically by pedal speed. Each of these shifting systems utilize a totally sealed, inclined linear shifting path. Environmental contaminants are prevented from entering any of the critical derailleur or control elements. The linear, inclined shifting path provides precise chain shifting, more uniform chain wrap on the rear bicycle drive sprockets, and lower chain and sprocket wear. Several different shifting control units are disclosed.

A power-branched transmission having a plurality of transmission ratio ranges and having a continuously variable transmission ratio. The transmission includes at least one drive shaft operatively connected to an engine with a rotationally fixed connection, a power divider, a variable speed drive, and an output shaft. The power divider is a planetary gear train and the drive shaft is directly coupled with the internal ring gear of the planetary gear train. Also disclosed is a shift system for such a transmission and a variable speed drive unit clutch arrangement.

The invention provides a hydraulic device for gear shift of a double-clutch automatic transmission, which belongs to the technical field of machinery and solves the problems of more execution elements of a gear shift system of the conventional double-clutch automatic transmission, high cost and complex system control. The hydraulic device for the gear shift of the double-clutch automatic transmission is arranged in the double-clutch automatic transmission provided with a first clutch and a second clutch, and comprises an odd gear hydraulic control system connected with the first clutch and an even gear hydraulic control system connected with the second clutch; an odd gear reversing valve capable of switching an oil flow direction is arranged in the odd gear hydraulic control system; an even gear reversing valve capable of switching the oil flow direction is arranged in the even gear hydraulic control system; the device also comprises a control valve connected with the odd gear reversing valve and the even gear reversing valve at the same time; and the control valve can drive the odd gear reversing valve and the even gear reversing valve to shift the gear. The gear shift system of the double-clutch automatic transmission has the advantages of few execution elements and low cost.

The invention is an automatic transmission shifting system for automobile, the automobile having a steering column assembly including a steering wheel at one end and steering column, and an electrical wire having first end terminating at the steering wheel and a second end terminating at least partially down the steering column. The system includes a first shifting actuator mounted to the steering wheel assembly, the first shifting actuator for initiating up shifts in the transmission by movement thereof and providing a first up shift signal to the first end of the wire. A second shifting actuator mounted is on the steering wheel assembly, the second shifting actuator for initiating down shifts in the transmission by movement thereof and providing down shift signals to the first end of the wire. Transmission actuation means is provided for up shifting and down shifting the transmission in response to the first up shifting and the second down shifting signals, respectively.

A family of new bicycle shifting systems incorporate improved derailleur designs that are controlled by sealed hydraulic actuators. The shifting systems (i) a hydraulically-actuated, manually-powered front and rear derailleur shifting system, (ii) a hydraulically-actuated, power-assisted front and rear derailleur shifting system with manual control, and (iii) a hydraulically-actuated, power-assisted front and rear derailleur shifting system in which the shifting sequence for the rear derailleur is controlled automatically by pedal speed. Each of these shifting systems utilize a totally sealed, inclined linear shifting path. Environmental contaminants are prevented from entering any of the critical derailleur or control elements. The linear, inclined shifting path provides precise chain shifting, more uniform chain wrap on the rear bicycle drive sprockets, and lower chain and sprocket wear. Several different shifting control units are disclosed. An integrated shifting and braking module is also disclosed.

Methods and apparatus are provided for a tactile feedback system. The system comprises a transmission indicator having a position, the position adapted to be adjusted by a user, a feedback device coupled to the transmission indicator, the feedback device adapted to produce a vibration in response to a feedback signal, and a control system adapted to detect the position of the transmission indicator and to transmit a feedback signal to the feedback device.

The invention provides a shift method of a hybrid electric vehicle. The method comprises the steps of firstly, determining that a battery is in a dischargeable state or a rechargeable state according to SOC (state of charge) of the battery, torque required by a driver and the state of the vehicle; secondly, determining a possible gear at a certain speed under the two conditions and the torque and rotational speed of an engine corresponding to each gear; and finally, determining a target gear under the condition of a minimum fuel consumption rate of the engine and determining whether to perform shift operation according to the time interval between two times of shift. The method has the advantages that in determining the state of the battery, the problem that the state of the battery is repetitively changed due to jump of the SOC is avoided by adopting the comprehensive judgment of values of the SOC (state of charge) of the battery, the torque required by the driver and the state of the vehicle; in determining the target gear, the target gear is determined from all possible gears under the condition of the minimum fuel consumption rate of the engine, and the fuel consumption at the target gear is guaranteed to be minimum; and whether to perform shift operation is determined according to the time interval between two times of shift, and thus frequent shift is avoided.

A power tong having a ring gear, a gear train, a motor and a gear shift mechanism. The gear shift mechanism further includes a linear actuator and a shift arm connect to the linear actuator. A drive gear is positioned on a drive shaft extending from the motor and this drive gear includes an upper and lower set of drive teeth having beveled top portions. The shift arm engages the drive gear between the upper and lower set of drive teeth and movement of the linear actuator causes the drive gear to engage one of at least two gears in the gear train.

The invention provides a shifting method and a shifting system of a hybrid electric vehicle. The hybrid electric vehicle comprises an engine, a clutch, a synchronizer, an electric generator and a drive motor. The engine, the electric generator, the clutch and the drive motor are connected in series in turn; the clutch is connected to the electric generator and the drive motor. The shifting method comprises the steps of receiving a shifting instruction and quickly reducing torque of the engine through negative torque provided by the electric generator, and determining a target gear according to the shifting instruction; separating the clutch to perform shifting operation when the input torque of the clutch is less than the safety torque of the clutch. According to the shifting method disclosed by the embodiment of the invention, the clutch is separated to perform shifting operation when the input torque of the clutch is less than the safety torque of the clutch, thus the shifting time is reduced, the efficiency of power transmission is improved, emissions are reduced, and the service life of the clutch is prolonged.

The invention discloses a hydraulic machine type automatic shift system, aiming to solve the problems of complicated planetary drive mechanism and high manufacture cost of AT and the problems of great difficulties of shift impact and launch control of AMT. The invention consists of a machine structure and an automatic control system, wherein the machine structure comprises a hydraulic torque convertor assembly (2), a wet type shift master clutch (3), a shift actuating mechanism assembly (5), a position selecting actuating mechanism assembly (7), a multiple positions parallel shaft type gear box (9) and a front box body (12). The machine structure is connected through a pump wheel cover (1) and a crank shaft (23), the output end of the machine structure is connected with the second shaft (48) of the multiple positions parallel shaft type gear box (9) and an automobile transmission shaft. The automatic control system comprises an electric control system and a hydraulic control system. The hydraulic control system comprises an internal meshing cycloid gear pump (11) providing pressure oil, action elements and control elements. The hydraulic machine type automatic shift system comprises four control circuits. The hydraulic machine type automatic shift system is more applicable to the automobiles such as large off-road vehicles.

The invention relates to a front-engine rear-drive automatic mechanical transmission case shifting system for a driving motor, in particular to a synchronizer-free shifting automatic mechanical transmission case for regulating the speed of an intermediate shaft based on a small quantity of gears, belonging to the technical field of automobile control. The system comprises an input shaft, an intermediate shaft, an output shaft, driving and driven gears for each gear, a splined hub, a jointing sleeve, a sensor, a speed regulating motor, a speed regulating motor transmission mechanism, a clutch operating mechanism, a shifting executing mechanism and a controller. According to the system, the rotating speed of the intermediate shaft is regulated through the speed regulating motor, so that synchronization of the jointing sleeve and a target gear during shifting is realized, a synchronizer with high material requirements is eliminated, reduction in the cost is facilitated, and the effect of compatibility among startup, accelerating performance and relatively high-speed running of a small-sized pure electric automobile is realized simultaneously.

An adaptive shift learn control system for rapidly updating an adaptive shift system that regulates shifting of a transmission includes first and second clutches and a control module that cycles the first clutch between an ON state and an OFF state while the second clutch is in a full OFF state. The control module monitors a parameter of the transmission during the cycling, calculates a clutch characteristic based on the parameter and updates the adaptive shift control system based on the clutch characteristic.

A derailleur utilizes a 4-bar linkage, including a housing which acts as one bar of the 4-bar linkage. A hydraulic assembly located within the housing moves the housing relative to the mounting shaft in response to hydraulic pressure to define a chain guide operating path. The derailleur device may include a detent mechanism formed on one of the three other bars. In one embodiment, the 4-bar linkage includes an input shaft rotatably attached to the housing at a one end, and an output shaft rotatably attached to the housing at the other end, and the housing rotates around the first shaft in response to the actuation force. The hydraulic assembly may include a piston which moves within a cylindrical bore, with one of the three other bars of the 4-bar linkage being attached to the piston. The resulting hydraulic derailleur design is comparable to mechanical (cable-pull type) derailleurs in size and weight.

A controllable, multi-mode, bi-directional overrunning clutch assembly and a shift system adapted for use in a transfer case for transferring drive torque from a primary output shaft to a secondary output shaft so as to establish a four-wheel drive mode. The clutch assembly includes a first ring journalled on a first rotary member, a second ring fixed to a second rotary member, and a plurality of rollers disposed in opposed cam tracks formed between the first and second rings. The first ring is split to define an actuation channel between its end segments. A cam rod is moveable between positions engaged with and released from one or both end segments of the split first ring. The shift system includes a mode fork which controls movement of the cam rod for establishing four distinct operational modes.

The invention discloses a rocking arm rhombus four wheels moon vehicle shift system, including a rotary rhombus frame and a front, a rear ,a left and a right wheels with an independent drive system mounted on the frame, the front and the rear wheels are independently fixed on the frame via a front hanger system and a rear hanger system, and the left and the right wheels are independently fixed on the frame via a left hanger system and a right hanger system. The front hanger system and the rear hanger system all consists of a connection mechanism and a steering mechanism. The invent uses a novel type of four wheels three axial rhombus chassis with the advantages of compact structure, high lightness degree, low energy consumption ,big load capacity, good cross country characteristics, convenient posture adjustment, strong land suitability , smooth vehicle body posture and high reliability.

The invention relates to an automated gear shift system for a multiple-ratio transmission having a synchronizer and a method for this purpose.

In a shift system wherein the transfer of power is performed using a motor, the smaller the gear ratio difference is, the smaller can be made the motor output. However, the number of gears must be increased in order to reduce the gear ratio. As the number of gears increases, the problem of gear noise becomes more serious. It is necessary to prevent both an increase in the number of gears and an increase of the motor output. In a vehicular drive system according to the present invention, a shifting power unit is not merely provided between a first intermediate shaft and a second intermediate shaft of a shift system which has the two intermediate shafts, but one side of a shifting power unit is connected to a vehicle driving power unit, while an opposite side thereof is connected to a power transfer switching clutch so as to be connected to the first or the second intermediate shaft through a reduction mechanism, whereby the output of the shifting power unit is decreased while minimizing an increase in the number of gears.

A shifting system for a motorcycle includes a shift link mechanism for transmitting operational force during a gear shifting operation. The shift link mechanism is arranged between a shift spindle and a change pedal operated by a shifting movement. A motion capture mechanism is provided on the shift link mechanism so as to transmit the operational force from the change pedal to the shift spindle via an resilient member including a compressive coil spring.

The invention discloses a rear axle driving assembly for an electrocar. The power output end of a gear transmission is in transmission fit with the power input end of a differential mechanism, and the differential mechanism correspondingly outputs power to a left wheel axle and a right wheel axle by the left half axle and the right half axle of the differential mechanism. According to the rear axle driving assembly for the electrocar, a speed shift assembly is driven to directly input the power into the differential mechanism, and a speed shift system and a driving assembly are installed to a rear axle. The rear axle driving assembly for the electrocar has a simple and compact structure. Because a transmission chain is shortened, the transmission efficiency is more obviously improved, and stronger integrity is provided so as to avoid transmission interference caused by vibration. After a product is formed, the product is directly applied to a three-wheel electrocar and a four-wheel electrocar, has a better integration performance and is better favorable for a small electrocar. Meanwhile, the gear speed shift system is adopted, and power output is reasonably blended when the electrocar is driven on a flat ground and climbs. Compared with the prior art, the rear axle driving assembly for the electrocar is characterized in that power consumption for climbing is reduced, engine power is fully utilized on the flat ground, and the use cost is lowered while purposes of energy saving and environment protection are achieved.

A derailleur utilizes a 4-bar linkage, including a housing which acts as one bar of the 4-bar linkage. A hydraulic assembly located within the housing moves the housing relative to the mounting shaft in response to hydraulic pressure to define a chain guide operating path. The derailleur device may include a detent mechanism formed on one of the three other bars. In one embodiment, the 4-bar linkage includes an input shaft rotatably attached to the housing at a one end, and an output shaft rotatably attached to the housing at the other end, and the housing rotates around the first shaft in response to the actuation force. The hydraulic assembly may include a piston which moves within a cylindrical bore, with one of the three other bars of the 4-bar linkage being attached to the piston. The resulting hydraulic derailleur design is comparable to mechanical (cable-pull type) derailleurs in size and weight.

The invention discloses a mechanical transmission automatic shift system used for an electromobile and belongs to the automatic shift technical field. The automatic shift system is characterized in that a clutch and a transmission are connected in series between a drive motor and a driving axle, and a clutch position sensor LHW and a control mechanism of the clutch position sensor LHW are additionally arranged on the clutch; the transmission is changed into an automated mechanical transmission (AMT), a vehicle speed sensor is close to the driving axle, and a motor ECU (electronic control unit) is connected with a mechanical automatic transmission ECU used for the electromobile; and the automatic mechanical transmission ECU is used for receiving a vehicle running state signal from each sensor and outputting a control signal of each actuator electromagnetic valve as well as various related display signals, controlling a gear-selecting mechanism, a gear-pushing mechanism, a clutch control mechanism and a motor to realize automatic shift. The automatic shift system provided by the invention has the advantages of improving the gear shift performance, improving the dynamic property and economy of a vehicle, shortening the joint time of the clutch, and prolonging the service life of the clutch, and reducing the impacting degree of the joint process, and improving the driving comfortableness.

This invention relates to an electric controlled mechanic automatic speed variator shift system, which comprises shift execution structure and shift control system, wherein the said execution structure is composed of independent each shift fork current motor, shift gear, and shift gear bars, that is, each direct current motor is connected to one shift gear fixed on each fork axis shift gear bar and shift gear and each direct current motor is separately connected to the said shift control system.

A device and method to predict and regulate nitrogen concentration in a flow shifting system. In one aspect of the system, a bleed valve fluidly coupled to multiple fuel cell stacks is used to reduce the presence of nitrogen in an anode flowpath. One or more sensors can be used to measure voltage within one or both of the fuel cell stacks. By assessing fuel cell voltage changes within the anode flowpath and equating such changes with nitrogen fraction buildup, the system can manipulate the bleed valve at appropriate times to improve system operability. In one form of equating the sensed voltage changes with the nitrogen fraction buildup, a predictive algorithm can be used by a logic device in a controller to compare the sensed voltage so that the controller instructs the bleed valve when to open and close. In a variation, the controller can compare the sensed voltages against stored data rather than rely on a formula or related algorithm.

A shift system for a boat propulsion unit is provided comprising a remote control operation device having a remote control shift lever for shifting from a distance. A boat propulsion unit has a shift device for shifting and a shift actuator for actuating the shift device. A controller controls the actuation of the shift actuator according to the operation amount of the remote control shift lever, as the remote control shift lever is operated from a neutral position within a specified range of shift region. The controller controls the actuation amount of the shift actuator per unit operation amount of the remote control shift lever to be different in part of the shift region.

The invention provides a modulation transfer function test system based on a CCD camera image intensifier. The test system is formed by a hardware module and a software module. The hardware module comprises a target light source system, an image acquisition system, a CCD shift system, an industrial personal computer and other sub systems. The software module comprises an image acquisition module, a motor control module, an MTF calculation module, a file management module and other sub modules. The collected image information is subjected to clarity judgment, if the image is fuzzy, a CCD camera is controlled through the CCD shift system to move front and back to realize focusing, thus the collected image becomes clearest, at that time the industrial personal computer processes clear image information, the calculation of a modulation transfer function is realized by the MTF calculation module, and through the file management module, a calculated modulation transfer function value is stored. According to the system, the control process is simple, the stability is good, the image can be focused automatically, and the system can be used for the detection of the modulation transfer functions of other photoelectric systems.