487results about "Clutches" patented technology

A method for detecting a safe state of a switchable valve of a hydraulic system of an actuator in a motor vehicle includes the at least one first switchable valve, which is actuated by being energized, a pump, and a controller which controls at least the first switchable valve and the pump. The pump delivers the fluid to a first load in a first rotational direction and to at least one second load in a second rotational direction.

A generator module for a vehicle includes a housing arranged for fixing to a combustion engine, a stator fixed in the housing, a rotor, rotatable within the stator and arranged for driving connection with the combustion engine, and a damper arranged in a torque path between the combustion engine and the rotor for damping torsional vibrations from the combustion engine.

A shaft coupling for coupling a prime mover shaft to a power input shaft of a progressive cavity pump can include a first half shell and a second half shell. Each of the half shells can include a first end and a second end along a longitudinal center axis, the first end can include an inner contour which can be configured to match an outer contour of the prime mover shaft and the second end can include an inner contour which can be configured to match an outer contour of the power input shaft. The shaft coupling can include a fastening mechanism, which can be configured for applying a force on the first half shell and the second half shell that can be in a radially inward direction, where the force can be applied through the longitudinal center axis.

The invention discloses an intelligent regulation and control system and method for a clutch of forging and pressing equipment, and the system comprises a current sensor group which is used for collecting the waveform data of the three-phase current of a clutch drive motor in real time; the feature extraction module is used for extracting waveform features from the waveform data, and the waveform features comprise harmonic distortion rate, phase offset and instantaneous power fluctuation characteristics; the time sequence prediction module is used for predicting the future change trend of the clutch engagement state based on the historical waveform characteristics; the controller is used for generating a regulation and control instruction according to the prediction result, and the regulation and control instruction comprises at least one of joint time adjustment, motor torque compensation and lubrication control; and according to the prediction result and characteristic parameter correlation analysis, dynamically generating instructions such as joint time adjustment, motor torque compensation and lubrication control, optimizing the running state of the clutch in real time, reducing abnormal vibration of the equipment, and meeting the requirements of real-time monitoring and dynamic regulation and control of the forging and pressing equipment clutch.

The invention provides a clutch control method and system, a vehicle and a medium, and belongs to the technical field of vehicle transmission control, and the method comprises the steps that a position deviation value sequence of a clutch is obtained, and the position deviation value sequence comprises a plurality of position deviation values; the position deviation value is equal to the difference value between the target position and the actual position of the clutch; pID control parameters are determined according to the working state of the clutch; performing filtering processing on the position deviation value sequence based on a least square method to obtain a filtering differential term coefficient; obtaining a variable speed integral item coefficient according to the position deviation value sequence, the variable speed integral threshold range and the integral item coefficient; generating a control signal according to a proportional term coefficient, the filtering differential term coefficient and the variable speed integral term coefficient; and the control signal is output to a clutch executing mechanism, and closed-loop control over the position of the clutch is achieved. According to the method, overshoot is remarkably reduced, and the robustness of clutch control is improved.

A shaft coupling for coupling a prime mover shaft to a power input shaft of a progressive cavity pump can include a first half shell and a second half shell. Each of the half shells can include a first end and a second end along a longitudinal center axis, the first end can include an inner contour which can be configured to match an outer contour of the prime mover shaft and the second end can include an inner contour which can be configured to match an outer contour of the power input shaft. The shaft coupling can include a fastening mechanism, which can be configured for applying a force on the first half shell and the second half shell that can be in a radially inward direction, where the force can be applied through the longitudinal center axis.

This invention relates to the field of power booster technology and proposes a clutch power booster, including a pneumatic cylinder and a hydraulic cylinder connected to the rear end of the pneumatic cylinder. An intake / exhaust control valve is provided on the side of the hydraulic cylinder near the pneumatic cylinder. The intake / exhaust control valve includes a valve body connected to both the pneumatic and hydraulic cylinders, a first valve core, a second valve core, a first small spring, a second large spring, and a first exhaust pipe. The valve body has a first sliding hole communicating with the interior of the hydraulic cylinder. A locking mechanism is provided inside the valve body. When the hydraulic oil retracts, the locking mechanism ensures that the compressed air port, the intake chamber, and the intake port are in a connected state. When the hydraulic oil re-enters, the locking mechanism closes the intake chamber and the intake port. The first valve core is positioned above the second valve core, and the locking mechanism is positioned between the first slider and the first valve core, with the first slider and the locking mechanism linked. This design is ingenious and compact, minimizing the space occupied by the power booster and reducing production costs.

The invention aims at solving the technical problems that in the prior art, clutch position-torque matching precision is low, starting shaking, gear shifting pause and other smoothness problems are likely to be caused, and abnormal abrasion of a clutch and engine flameout are caused, and provides an AMT clutch semi-combination point dynamic learning method. Vehicle running parameters in the vehicle running process are collected in real time, and meanwhile an initial clutch position-torque curve is generated through fitting calculation; judging whether the vehicle operation parameters meet the enabling condition of dynamic learning of the half-joint point of the clutch or not; if the vehicle operation parameters do not meet the enabling condition, semi-joint point dynamic learning is not carried out; if the vehicle operation parameters meet the enabling conditions, semi-joint point dynamic learning is started; and in the semi-combination point dynamic learning process, calculating a semi-combination point value and updating the initial clutch position-torque curve in real time to realize dynamic learning of the clutch semi-combination point.

The invention relates to a method for controlling a hydraulic system (1) for a motor vehicle with an electrically operated pump (2) that regulates the system pressure, wherein the system pressure is controlled between a maximum pressure and an opening pressure to actuate a clutch (17) by means of a slave cylinder (6). To prevent damage to the hydraulic system (1) due to excessive system pressure, pressure values ​​of a pressure signal of the system pressure are statistically evaluated after exceeding the maximum pressure over a predetermined measurement interval, and an error is output if a predetermined probability of the pressure values ​​exceeding the maximum pressure is reached.

A transmission includes a shaft-hub connection designed as a serration and having an axial extent along a shaft axis, and an oil supply line to the serration in order to lubricate a relative movement in the serration between a shaft side and a hub side of the shaft-hub connection. The oil supply line is designed to open from radially inward directly into a cavity on the serration to enable supply of oil to the serration at an oil pressure that prevails in the cavity.

Assembly for spring coupling, spring coupling, and corresponding method. This assembly (10) for spring coupling includes a coupling housing (12) adapted to surround a coupling spring (14) of the spring coupling, the coupling housing defining a central housing axis (YY). The assembly includes adjustment means (16) adapted to adjust the axial clearance between the coupling spring (14) and the coupling housing (12). Application to spring couplings. Figure for the abstract: 2

A brake assembly includes a brake carrier, a brake clamp, and a guide pin assembly. The guide pin assembly slidably couples the brake clamp to the brake carrier. The guide pin assembly includes an integral capped bushing, a sleeve, and a fastener. The fastener couples the sleeve to the brake bracket. The integral capped bushing is movable relative to the sleeve.

The application discloses a kind of liquid control wet clutch half combination point self-learning methods, and learning process includes the following processes: clutch emptying: clutch pressure oil way emptying is realized by controlling liquid control system solenoid valve current;Threshold self-learning: by setting learning pressure interval, drive solenoid valve current step, to obtain the threshold of half combination point self-learning pressure change rate;Half combination point pressure self-learning: based on threshold self-learning result, realize the automatic acquisition of clutch half combination point pressure;Result output: according to half combination point pressure self-learning result and temperature characteristic output wet clutch half combination point result.The method of the application is simple and easy to operate, and can be used for product initial and durability process and different use environment.

The invention provides an electromagnetic valve control method and device and a vehicle clutch control system, and belongs to the technical field of vehicle clutch control. The method comprises the steps that the target position, the actual position and the target position change rate of a clutch are obtained; based on the position deviation, the actual position, the target position change rate and a preset control strategy, at least two electromagnetic valves with different hole diameters are controlled to execute a first combination action so as to drive a clutch to execute combination or separation operation; the position deviation is equal to the difference value between the actual position and the target position; when it is determined that the position of the clutch is overshoot according to the position deviation, the maximum overshoot amount in the current overshoot event is obtained; determining a second combined action according to the threshold range of the maximum overshoot; and controlling at least two electromagnetic valves with different apertures to execute a second combined action. Overshoot is effectively relieved, and the clutch control precision is improved.

Provided is an assembling device including a phase matching device configured to perform phase matching (20) on a cassette (11), which is formed of an inner joint member (3) and a cage (5) fit to each other so as to be rotatable relative to each other about a center axis (Oi) of the inner joint member (3), to match circumferential positions of an inner track groove (9) of the inner joint member (3) and a pocket (10) of the cage (5). The phase matching device (20) includes a pair of moving bodies (23) configured to synchronously move in directions opposite to each other, and each of the moving bodies (23) is configured to perform slide movement along a direction orthogonal to an axis-parallel plane (P) including the center axis (Oi) as a reference, under a state in which a distal end portion (protrusion (24) formed thereon) of each of the moving bodies has been inserted in the pocket (10).

The problem that starting or gear shifting is unstable due to the fact that a single-point updating mode of a temperature section and a multi-torque section is adopted in an existing clutch self-learning mode of a gearbox is solved. According to the clutch torque transmission characteristic self-learning system and method, through first-stage clutch T2P self-learning and second-stage clutch T2P self-learning, two target pressure compensation points are determined, and after two-point curve slope fitting confirmation, a self-learning update value of each torque stage is calculated through a linear interpolation mode, and T2P full torque point update and self-learning are achieved; the stability of starting and gear shifting under different mileages and environments is ensured, the service life of a clutch is prolonged, the comfort and stability of the whole vehicle are enhanced, the fatigue of a driver is reduced, the gear shifting time is saved, and the oil saving rate of the whole vehicle is increased.

The invention discloses a target torque tracking method based on wet clutch thermal load sliding friction state estimation and a vehicle. The method comprises the following steps that clutch structure parameters, working condition parameters and a target torque value are obtained; constructing a wet clutch temperature field prediction model; constructing a torque nominal PWA model at the reference radius of the wet clutch at different working condition parameters at normal temperature; a rough friction coefficient is updated through a wet clutch temperature field prediction model, torque nominal PWA model parameters are corrected online by combining the fluid-solid radial fluid-solid state difference of the wet clutch, torques at different radial positions at different temperatures are predicted, and a wet clutch full-disc torque PWA model under the full working condition is obtained through superposition; and on the basis of full-disc torque calculation in the thermal load sliding friction state of the wet clutch, the normal pressure required by the wet clutch under the current operation working condition is inversely solved in combination with the target torque, and target torque tracking of thermal load sliding friction state estimation of the wet clutch is achieved.

The utility model discloses a hydraulic clutch control mechanism and a motorcycle, and the hydraulic clutch control mechanism comprises an upper pump, a lower pump, an upper clutch, a lower clutch and a lower clutch, the first end of the upper pump piston is arranged in the cavity, and the second end of the upper pump piston is arranged outside the upper pump; and the handle is rotatably arranged on the upper pump, a receding sinking table is arranged on the handle, and a boss connected with the second end of the piston of the upper pump in a clamped mode is arranged on the receding sinking table. According to the hydraulic clutch control mechanism and the motorcycle, the receding sinking table and the boss are arranged on the handle, the handle, the receding sinking table and the boss drive the upper pump piston to move, the operation mode that a spiral spring pushes the upper pump piston is replaced, and when the upper pump is filled with brake fluid, the upper pump returns through inertia force of a clutch spring and an oil duct; the initial force value and the overall force value can be reduced, and the riding quality and commodity are improved.

The utility model relates to the technical field of clutches, in particular to a double-clutch structure controlled by one-way oil pressure, which comprises an input shaft, a normally open input hub, a normally open clutch module, an output hub, an output shaft, a normally closed input hub, a normally closed clutch module and an output gear. The input shaft is in transmission connection with the normally-open clutch module through the normally-open input hub, the output hub is in transmission connection with the normally-open clutch module, and the output shaft is in transmission connection with the output hub. The input shaft is in transmission connection with the normally-closed clutch module through the normally-closed input hub, and the output gear is in transmission connection with the normally-closed clutch module. In a non-pressure state, the normally open clutch module is in an open state; the normally closed clutch module is in a closed state. The hydraulic system has the advantages that the two clutches are controlled by adopting a single pressure oil way, so that the hydraulic system is simpler, the number of parts is reduced, the cost is lower, the efficiency of the system is improved due to the use of the normally closed clutch, and the hydraulic system has extremely high cost economy and expansibility.

The present invention relates to a method for operating a hydraulic system (10) of a motor vehicle transmission, wherein the hydraulic system (10) comprises: a hydraulic pump (12), a first hydraulic valve (26), a second hydraulic valve (28), and an oil pan (32). In a first method step, a diagnosis is performed on the first hydraulic valve (26), wherein if a defect in the first method step is identified, a second method step is performed to achieve a pressure reduction in the working pressure line (36), wherein in the second method step, the second hydraulic valve (28) is briefly moved to a second actuated position, in which a connection is established between the second working pressure port (44) of the second hydraulic valve (28) and the second actuated port (46) of the second hydraulic valve (28) by means of the second hydraulic valve (28), wherein subsequently, in a third method step, the second hydraulic valve (28) is moved to a second stationary position, in which a connection exists between the second actuated port (46) and the oil pan (32).

A computer system comprising processing circuitry configured to estimate a clutch slipping point position (Xsp) of a clutch in a powertrain, by: - controlling the powertrain to a first operating condition in which a prime mover is running and in which rotation of a torque transferring shaft of a gearbox is prevented by a braking component different from the clutch, - controlling the clutch to move from a first clutch position towards a second clutch position, wherein the first clutch position is a disengaged or an engaged clutch position, - detecting that torque applied by the prime mover meets a predetermined first torque criterion, and in response thereto register an associated clutch position (Xb), in which the clutch is positioned when the first torque criterion is met, - estimating the clutch slipping point position based on a known clutch torque transfer characteristics and the registered clutch position.

The invention relates to the technical field of mechanical transmission parts, and discloses a conical disc friction type overrun clutch with a torque protection function. The conical disc friction type overrun clutch comprises a first inner ring and a first outer ring, the first inner ring penetrates through the first outer ring, and at least one first conical sleeve is arranged between the first inner ring and the first outer ring; a safety pin is arranged between the first conical sleeve and the first inner ring, and the number of the safety pin is at least one. A torsional spring I is arranged between the conical sleeve I and the inner ring I; a protective sleeve is arranged on the outer cylindrical face of the first conical sleeve. The torque protection device is simple in structure and low in manufacturing cost, and has a torque protection function by combining stable small torque.

Shift control method for a vehicle with a dual clutch transmission, comprising the shift control method: a disengagement start process (S10) of the, when a power-on downshift is initiated, causing a control device to initiate the disengagement of a disengagement-side clutch, so that an engine speed increases to above a speed of the disengagement-side clutch, a first initialization process (S40) of causing the control device to set a torque of the release-side clutch calculated by means of a torque model of the release-side clutch as the pilot torque and causing the torque of the release-side clutch to converge to the pilot torque during a first reference period, a first control process (S50) of which, when the first reference time has elapsed, causes the control device to calculate a feedback torque as a function of a clutch slip change rate and to control the torque of the disengaging clutch using the sum of the feedforward torque and the feedback torque, and a first torque transfer operation (S60) of the, when the control device determines that a preparation for carrying out a torque phase during the execution of the first control operation (S50) is completed, causing the control device to disengage the disengaging clutch for a predetermined second reference time period, so that the torque of an engaging clutch increases in accordance with the torque of the motor.

To obtain stable braking force in a work machine, no matter whether inertia braking force becomes insufficient or varies.SOLUTION: A work machine is provided with a driving source, a transmission, a running device, a brake device and a controller. The transmission is connected to the driving source. The running device is connected to the transmission and causes the work machine to run. The brake device brakes the running device. The controller obtains a braking command for braking the work machine. The controller determines target braking force at the time when the work machine runs by inertia, on the basis of the braking command. The controller determines auxiliary braking force in such a manner that target braking force can be obtained by inertia braking force from the transmission and the auxiliary braking force by the brake device. The controller determines whether the transmission is in an excessive rotating state. When determining that the transmission is in the excessive rotating state, the controller increases the auxiliary braking force.SELECTED DRAWING: Figure 5

The application relates to a vehicle clutch protection method and device, computer equipment and a storage medium. It belongs to the technical field of intelligent driving. The method comprises the following steps: determining the clutch slip friction heat generation of a target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle; determining the current temperature of the clutch according to the clutch slip friction heat generation, clutch parameters and the initial temperature of the clutch; wherein the initial temperature of the clutch is the initial ambient temperature; and determining the clutch protection strategy of the target vehicle according to the current temperature of the clutch. The application can accurately determine the current temperature of the clutch without installing a temperature sensor on the clutch, and determine the clutch protection strategy of the target vehicle based on the current temperature of the clutch. The application not only effectively protects the clutch, avoids high temperature of the clutch and affects the service life, but also effectively improves the safety of driving and riding.

A method and system for estimating a temperature of a clutch and a maximum temperature of a clutch are described. In one example, the maximum temperature of the clutch is based on phases of a transmission gear shift. The transmission gear shift may include a power-on downshift and a power-on upshift.

The embodiment of the invention provides a clutch combination pressure correction method, system and equipment, a tractor and a medium, and belongs to the field of tractor electric control. The method comprises the steps of obtaining type information and a load level of a current agricultural implement; querying a parameter table according to the type of the agricultural implement, and obtaining a corresponding clutch pressure correction coefficient; and in the clutch combination process, according to the clutch pressure correction coefficient, in combination with the current control stage of the clutch, the clutch pressure control curve is corrected in real time. The agricultural implement type information is obtained, the correction coefficient is determined according to the agricultural implement type information, then the pressure control curve is dynamically corrected in the clutch combining process, the clutch combining process can be optimized according to different load characteristics of agricultural implements, and therefore the clutch combining efficiency is improved while the power transmission reliability and the anti-skid and anti-friction capacity under the heavy-load working condition are ensured. The combination smoothness and comfort under the light-load working condition are improved, and the service life of the clutch and a transmission system is prolonged by reducing unnecessary impact and sliding friction work.

To make a vehicle speed follow a target speed when sailing travel is performed during cruise control.SOLUTION: The vehicle is capable of performing cruise control for controlling a vehicle speed to a target speed set by a driver. The cruise control can perform sailing traveling in which the vehicle travels by inertia. The vehicle ends the sailing travel when a preset first deceleration cannot be obtained when the sailing travel is executed during execution of the cruise control.SELECTED DRAWING: Figure 3

Assembly (10) for actuating a clutch (48) with a clutch actuator (44) and with a hydraulic unit (12) with a reversing pump (18) which has two pump connections (20, 22) that act as suction and pressure connections depending on the direction of rotation, with at least one suction inlet (26) for drawing in hydraulic fluid, wherein a suction line section (30, 32) extends from the suction inlet (26) to each of the pump connections (20, 22) and a check valve (38, 40) blocking in the direction of the suction inlet (26) is arranged in each of the suction line sections (30, 32), wherein a first pressure line (34) extends from a first pump connection (20) to a lubricant connection (14) of the hydraulic unit (12), wherein a check valve (42) blocking in the direction of the pump connection is arranged in the first pressure line (34), wherein a second pressure line (36) leads from a second pump connection (22) to an actuator connection (16) of the hydraulic unit (12), wherein the second pressure line (36) is free of valves, wherein the clutch actuator (44) is connected to the actuator port (16) of the hydraulic unit (12), wherein the clutch actuator (44) is a single-acting hydraulic piston (46) which works against a return spring (47), wherein a locking bolt (52) is provided which interacts with the hydraulic piston (46), wherein a magnetic coil (58) is associated with the locking bolt (52), and wherein two radial notches (54, 56) are provided on the hydraulic piston (46) which are arranged such that the hydraulic piston (46) is held in an actuating position when the locking bolt (52) engages in the first notch (54) and the hydraulic piston is held in an open position when the locking bolt (52) engages in the second notch (56) in which the clutch (48) is open.