WO2021027495A1 - Convertisseur de couple d'impulsion à tension constante - Google Patents

Convertisseur de couple d'impulsion à tension constante Download PDF

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Publication number
WO2021027495A1
WO2021027495A1 PCT/CN2020/103009 CN2020103009W WO2021027495A1 WO 2021027495 A1 WO2021027495 A1 WO 2021027495A1 CN 2020103009 W CN2020103009 W CN 2020103009W WO 2021027495 A1 WO2021027495 A1 WO 2021027495A1
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pulse
torque converter
torque
valve
target
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PCT/CN2020/103009
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Chinese (zh)
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卓见
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卓见
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Priority to CN202080001306.2A priority Critical patent/CN114901973B/zh
Publication of WO2021027495A1 publication Critical patent/WO2021027495A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/14—Control of torque converter lock-up clutches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

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  • the patent of the invention belongs to the field of transmissions, and particularly relates to an automobile continuously variable automatic transmission and its application.
  • the driving performance of a vehicle depends not only on the engine, but also on the transmission and the matching between the transmission and the engine.
  • the speed of the car is constantly changing during the driving process.
  • the gear ratio of automobile gearboxes should be as wide as possible; with the birth of the continuously variable transmission (CVT), this goal has been gradually achieved
  • the transmission of CVT is composed of metal belt, driving cone wheel, driven cone wheel, hydraulic clamping force system, sensor, wiring harness and TCU. According to the output characteristics of the engine, TCU eliminates the other by adjusting the main and driven cone wheels.
  • the long diameter change produces a continuously changing speed ratio to adapt to the changing load of the car and make the engine work in the desired mode; it improves the economy and power of the car while reducing emissions; in addition, the CVT also It can simplify the operation of the driver, reduce driving fatigue, and improve driving safety; compared with the four-element automatic transmission, the CVT system can increase the acceleration performance by 10% and the fuel economy by 10%-15%; especially the electro-hydraulic type Metal belt CVT, with high transmission efficiency ratio, high power, small and compact structure, and wide application range, has become the best choice for automotive gearboxes from the comprehensive consideration of production cost, reliability and performance.
  • the current electro-hydraulic metal belt CVT is single and double torque-variable dynamic pressure CVT.
  • the CVT adopts the stepless automatic transmission in the virtual gear range. Its development has only been more than 20 years. There are still many unstable factors in the use process, especially the effect The clamping force system on the cone wheel is very fragile, and it always works under dynamic high pressure. As long as any part of the electro-hydraulic control system, especially the sensor and wiring harness, has a failure, or even the occasional poor contact of the plug
  • the loss of the gear position signal causes the torque converter to be at a loss. If the gear position is too high, the engine will be stuck and damaged due to insufficient speed. If the gear position is too low, the engine will cause the metal belt to slip due to the high speed, and the metal belt will slip.
  • Torque converter Patent CN104214332A discloses a hydraulic control system for controlling a continuously variable transmission, including a torque converter TCC, including: a pressure accumulator system with an accumulator, a temperature reduction system with an oil cooler subsystem, and a pressure accumulator system Including accumulator 186, accumulator 133, and solenoid 184.
  • the controller 301 can be a transmission control module.
  • the cooling system is responsible for providing the oil temperature of the driving wheel hydraulic cylinder and the driven wheel hydraulic cylinder in a reasonable state
  • the torque converter TCC is responsible for providing the variable pitch force of the pulley under constant pressure.
  • double torque converter CVT avoids The occurrence of "power interruption” has been solved, and the problem of what to do after "data interruption” occurs; if a method can be found that will not affect the operation of the gearbox even if a "data interruption” occurs, it will be done once and for all.
  • a constant voltage pulse torque converter which is characterized by comprising: a clamping force system, a pulse torque converter, a two-stage pressure accumulating system, a cooling system and a control system; wherein the clamping force system is connected to the pulse torque converter and is responsible for Perform torque conversion tasks; the secondary pressure accumulation system is connected to the clamping force system and is responsible for providing the clamping force of the cone wheel.
  • the cooling system is connected to the clamping force system and is responsible for cooling the cone wheel close to the temperature; the control system is responsible for the entire torque conversion system Intelligent control.
  • the above-mentioned constant-voltage pulse torque converter is further characterized in that the pulse torque converter is composed of a torque-changing hydraulic cylinder, a transmission structure, a two-way piston, a stepping motor, a torque-changing isolation valve, and a torque-changing guide tube
  • the transmission mechanism is composed of a central shaft, a gear set, a double rack, a fixed chute and a manual shift gear.
  • the fixed chute is arranged in the torque-changing hydraulic cylinder, and the two-way piston is provided with Double rack, the stepper motor is connected to the gear set through the central shaft; the stepper motor drives the bidirectional piston to move in the torque-changing hydraulic cylinder, and the two ends of the torque-changing hydraulic cylinder will produce volume changes in one order and another;
  • the two-way piston moves to the driving cone wheel, the radius of the driving wheel increases and is restricted by the binding force of the metal belt.
  • the driven cone wheel moves backward at the same time, and the radius of the driven wheel decreases simultaneously. At this time, it is in an accelerating state.
  • the moving cone wheel moves, showing a decelerating state.
  • the cross section of the driving wheel hydraulic cylinder is the horizontal of the torque conversion hydraulic cylinder. Integer multiples of cross-sectional area.
  • the above-mentioned constant pressure pulse torque converter is also characterized in that the secondary pressure accumulating system is composed of a secondary pressure accumulating cylinder, a secondary cylinder isolation valve, a master balancing valve, a slave balancing valve, a main cabin shut-off valve, and a slave cabin
  • the stop valve, the slave return stop valve and the slave return pipe are responsible for providing tension to the metal belt and also have the function of exhaust and cleaning;
  • the middle of the secondary pressure accumulator is equipped with a secondary isolation valve, and one end is equipped with a main balance valve,
  • the main compartment shut-off valve is connected with the active cone wheel cylinder through a duct, and the other end is provided with a slave balance valve, a slave compartment shut-off valve, a slave return stop valve and a slave return pipe, and is connected with the driven cone wheel cylinder through the duct.
  • the above-mentioned constant pressure pulse torque converter is also characterized in that the cooling system is composed of a main cooler, a main flow device, a slave cooler, a slave flow guide and a connecting pipe, and is responsible for the driving wheel hydraulic cylinder and the driven wheel hydraulic cylinder.
  • the oil temperature of the cylinder is in a reasonable state.
  • the main cooler and the main flow device are connected with the driving cone wheel and are responsible for the close cooling of the driving cone wheel; the slave cooler and the slave flow deflector are connected with the driven cone wheel and are responsible for the driven cone wheel. The close of the wheel cools down.
  • the above-mentioned pulse torque converter is also characterized in that the pulse torque converter has a gear lock function.
  • the torque converter shut-off valve When the torque converter shut-off valve is closed and the torque converter isolation valve is opened, the oil at both ends of the pulse torque converter is connected.
  • the hydraulic cylinder of the driving wheel has the same oil pressure, and the torque conversion function disappears into the locked state; when the torque conversion isolation valve is closed and the torque conversion cut-off valve opens, both ends of the pulse torque converter are hydraulically isolated, and the torque conversion function is restored to the unlocked state.
  • the above-mentioned pulse torque converter is also characterized in that the pulse encoder adopts an absolute multi-turn encoder, its mechanical position signal and reading method, the gear position signal does not need to be memorized, and the gear position caused by the occasional signal interruption is avoided The trouble of having to stop and restart when the signal is lost.
  • the above-mentioned constant voltage pulse torque converter is also characterized in that the control system includes an AI system, which is composed of an AI module, a data module, and a touch screen module; wherein the AI module has learning, analysis, memory storage, and matching of historical data And application functions, as well as the automatic safety limit function under special working conditions; the data module is a database based on the target input speed of the engine; the generation method is: vehicle speed, load, road conditions, weather, driving technology and driving mode as dimensions , To comprehensively calculate the performance effects of vehicle stability, safety, comfort, and energy consumption under various working conditions to generate the optimal target input speed value and safety limit value; the AI module has a voice servo Function, a voice recognition button is installed on the steering wheel, when you press and hold the voice recognition button, you can issue a voice command to implement the function of the designated gear; the touch screen module has a Bluetooth function, and the upper gear can be completed by touching the corresponding gear button The automatic lifting gear.
  • the AI module has a voice servo Function, a voice
  • the above-mentioned constant voltage pulse torque converter is also characterized in that the control system also includes a torque converter control system, which uses a calculation method based on the output speed.
  • the AI module Match the optimal target input speed from the database to the TCU, then generate the target speed ratio according to the real-time output speed, and further generate the target speed ratio pulse value; then read the stepper motor pulse value from the pulse encoder to further generate the real-time speed Ratio pulse value, and then subtract the target speed ratio pulse value and the real-time speed ratio pulse value to obtain the target pulse variable; subtract the real-time input speed and the target input speed to generate the throttle speed difference, and calculate the throttle pulse variable, and then the throttle The pulse variable and the target pulse variable are added to generate the total dynamic pulse variable; further generate the target pulse variable of the stepper motor, and then the stepper motor completes the movement of the pulse variable to obtain the ideal real-time output speed.
  • the above-mentioned constant voltage pulse torque converter is also characterized in that the control system also includes a fault detection system, under the same target operating condition, by determining whether the difference between the real-time speed ratio pulse value and the target speed ratio pulse value is Determine whether the entire pulse torque converter is faulty within the preset range.
  • Stepper motor segment is faulty by determining whether the difference between the target pulse variable of the stepper motor and the actual variable of the stepper motor pulse is within the preset range , By determining whether the difference between the target movement value of the two-way piston and the actual movement value of the two-way piston is within the preset range to determine whether there is a fault in the transmission section, and by determining whether the difference between the target movement value of the cone wheel and the actual movement value of the cone wheel is Within the preset range, judge whether there is a fault in the clamping force system segment.
  • the above-mentioned constant voltage pulse torque converter is also characterized in that the control system further includes a fault emergency system, and a hydraulic torque converter is arranged between the gearbox and the engine.
  • the hydraulic torque converter Acting as a hydraulic coupler, it does not participate in torque conversion.
  • the engine speed is lower than the set value under vehicle starting, parking and emergency conditions, it will automatically turn on to participate in torque conversion work; when the occasional gear signal is interrupted, the pulse torque converter enters
  • the gear is locked, the torque converter automatically starts to take over the temporary torque conversion task.
  • the system reads the gear position signal again, and the torque converter enters the hydraulic coupler state, and the torque converter is pulsed.
  • the dynamic pressure CVT When the pulse torque converter fails to perform automatic torque conversion, the dynamic pressure CVT will automatically start, and the vehicle will drive in the middle and low speed limit gears. When the dynamic pressure CVT also fails, the hydraulic torque converter will automatically start, and Prompt the driver to perform harmless braking to stop.
  • the constant voltage pulse torque converter provided by the patent of the present invention includes: a clamping force system, a pulse torque converter, a two-stage pressure accumulating system, a temperature reduction system and a control system; compared with the prior art, due to the adoption of The design of constant voltage pulse torque conversion truly realizes precise stepless automatic transmission to reduce energy consumption; during the torque conversion process, the secondary pressure accumulation system is independently controllable, and manual transmission can still be used when the automatic transmission fails.
  • Figure 1 is a schematic front sectional view of the structure of the pulse torque converter of the invention patent
  • Figure 2 is a schematic cross-sectional view of the P1-P2 structure of the pulse torque converter of the present invention
  • Figure 3 is an enlarged vertical cross-sectional schematic diagram of the structure of the pulse torque converter P3-P4 of the invention patent;
  • FIG. 4 is a schematic diagram of the control system of the constant voltage pulse torque converter of the invention patent.
  • FIG. 5 is a schematic diagram of the structure of the constant voltage pulse torque converter of the invention patent.
  • 101 Metal belt, 102. Active cone wheel, 103. Active cone wheel cylinder, 104. Main cooler, 105. Main flow device, 106. Cylinder isolation valve, 107. Driven cone wheel, 108. Slave Moving cone wheel hydraulic cylinder, 109. Slave cooler, 110. Slave flow deflector, 111. Cylinder connecting pipe; 201. Pulse torque converter, 202. Torque variable isolation valve, 203. Bidirectional piston, 204. Stepping Motor, 205. Variable torque hydraulic cylinder, 206. Bottom shaft, 207. Gear set, 208. Double rack, 209. Fixed chute, 210. Variable torque stop valve, 211. Variable torque guide tube, 212 .Manual gear; 301.
  • Cylinder 302. Cylinder cooler, 303. Primary accumulator, 304. Secondary accumulator, 305. Oil pump, 306. Master balance valve, 307. Slave balance valve, 308. Slave Compartment shut-off valve, 309. Secondary cylinder isolation valve, 310. Main compartment shut-off valve, 311. Slave return stop valve, 312. Main return pipe, 313. Slave return pipe, 314. Overflow valve;
  • the difference between the target input speed and the dynamic throttle speed 4200.
  • the difference between the target pulse variable of the stepper motor and the actual pulse variable of the stepper motor 4300.
  • the difference between the target movement value of the bidirectional piston and the actual movement value of the bidirectional piston Value 4400.
  • the difference between the target movement value of the cone wheel and the actual movement value of the moving wheel 4
  • the purpose of the present invention is to provide an energy-saving, safe and intelligent constant voltage pulse torque converter and assembly.
  • the patented constant voltage pulse torque converter of the present invention includes: a clamping force system, a pulse torque converter 201, a secondary pressure accumulating system, a cooling system and a control system; the clamping force system and pulse The torque converter is connected to perform the torque conversion task; the secondary pressure accumulating system is connected to the clamping force system to provide the clamping force of the cone wheel, and the cooling system is connected to the clamping force system to cool the cone wheel close to it; control system Responsible for the intelligent control of the entire torque converter system.
  • the clamping force system consists of a metal belt 101, a driving cone wheel 102, a driving cone wheel cylinder 103, a driven cone wheel 107, a driven cone wheel cylinder 108, a cylinder connecting pipe 111 and a conduit; the pulse change
  • the torque converter 201 is composed of a torque-changing hydraulic cylinder 205, a transmission structure, a pulse encoder 3700, a stepping motor 204, a bidirectional piston 203, a torque-changing isolation valve 202, and a torque converter guide tube 211.
  • the transmission mechanism is composed of a central shaft 206, a gear set 207, a double rack 208, a fixed slide groove 209 and a manual shift gear 212, the fixed slide groove 209 is arranged in the torque-changing hydraulic cylinder 205, the two-way piston 203 is provided with a double rack 208, and a stepping motor 204 is connected to the gear set 207 through the central shaft 206.
  • the two-way piston 203 moves in the torque-changing hydraulic cylinder 205, the two ends of the torque-changing hydraulic cylinder 205 synchronously produce volume changes from one to the other, and the two-way piston 203 moves toward the driving cone.
  • the radius of the driving cone wheel 102 increases, and is restricted by the binding force of the metal belt 101.
  • the driven cone wheel 107 moves backward at the same time, and the radius of the driven wheel 107 decreases simultaneously. At this time, it is in an accelerating state, and vice versa.
  • the manual gear 212 is connected to the central shaft 206;
  • the pressure accumulation system It is composed of secondary pressure accumulator 304, secondary cylinder isolation valve 309, master balance valve 306, slave balance valve 307, master compartment shut-off valve 310, slave compartment shut-off valve 308, slave return shut-off valve 311 and slave return pipe 313, responsible for Provides a stable clamping force to the driving wheel, and has the function of cleaning and exhausting;
  • the cooling system is composed of the main cooler 104, the main flow device 105, the slave cooler 109, the slave flow guide 110 and the connecting pipe, which is responsible for the active
  • the oil temperature of the cone wheel cylinder 103 and the driven cone wheel cylinder 108 are in a reasonable state;
  • the control system is composed of a torque conversion control system, an AI system, a fault detection system, and an emergency treatment system, and is responsible for the gearbox
  • the torque converter isolation valve 202 of the pulse torque converter 201 has lock and unlock functions.
  • the torque converter shut-off valve 210 When the torque converter shut-off valve 210 is closed and the torque converter isolation valve 202 is opened, the oil at both ends of the pulse torque converter 201 is connected.
  • the oil pressures of the driving wheel cylinder 103 and the driven wheel cylinder 108 are the same, and the torque conversion function disappears into the locked state; when the torque converter isolation valve 202 is closed, the torque converter shut-off valve 210 is opened, and the pulse torque converter 201 ends The oil is isolated and the torque conversion function is restored to the unlocked state.
  • the pulse encoder 3700 of the pulse torque converter 201 is an absolute multi-turn encoder. Its mechanical position ensures the uniqueness of the gear signal. It does not need to be memorized and only needs to be read directly, which prevents the control system from being interrupted by the signal. influences.
  • the AI system of the control system includes: an AI module 1000, a data module 1100, and a touch screen module; the AI module 1000 has the functions of learning, analyzing, memory storage, matching and application of historical data, including safety under special working conditions Gear-limiting function; the data module 1100 is a database based on the target input speed of the engine operating conditions.
  • the method is: taking the vehicle speed, load, road conditions, weather, driving technology and driving mode as the dimensions, and the vehicle under various operating conditions The performance effects of stability, safety, comfort, and power consumption are comprehensively calculated to generate the optimal operating condition target input speed value;
  • the AI module 1000 has a voice servo function, and a voice recognition button is installed on the steering wheel. Press and hold the voice recognition button to issue a voice command to implement the function of the designated gear; the touch screen module has a Bluetooth function, and it can automatically up and down in the upper gear by touching the corresponding gear key.
  • the control system also includes a torque conversion control system, which uses a calculation method based on the output speed.
  • the AI module 1000 first selects the matching engine target input speed 1200 from the database according to the working conditions and environment. TCU 2000, according to the real-time output speed of 3800, generates a target speed ratio of 1300, and further generates a target speed ratio pulse value of 1400; then reads the stepper motor pulse value 2400 from the pulse encoder 3700, and further generates a real-time speed ratio pulse value of 2500, Then subtract the target speed ratio pulse value 1400 and the real-time speed ratio pulse value 2500 to generate the target pulse variable 1500; subtract the dynamic throttle speed from the target input speed 1200 to generate the throttle speed difference, and calculate the throttle target pulse variable 2300, and then Adding the throttle target pulse variable 2300 and the target pulse variable 1500 to generate a dynamic pulse total variable 2600; further generating a stepper motor target pulse variable 3100, the stepper motor 204 completes the pulse variable to obtain the ideal
  • the control system also includes a fault detection system.
  • the difference between the target movement value of the cone wheel 3500 and the actual movement value 3600 of the cone wheel is within the preset range Set within the range to judge whether there is a fault in the clamping force system segment.
  • the control system also includes a fault emergency system, and a torque converter is provided between the gearbox and the engine.
  • the torque converter acts as a hydraulic coupler and does not participate in torque conversion;
  • the vehicle starts, stops, and when the engine speed is lower than the set value in emergency conditions, it is automatically turned on to participate in torque conversion work.
  • the vehicle can be parked without braking. Make the start and parking more smooth; when there is an occasional "signal interruption" under extreme conditions, the pulse torque converter will enter the locked state, and the hydraulic torque converter will automatically start to take over the temporary torque conversion task.
  • the system After the condition is removed, the system first reads the gear signal again, and then the hydraulic torque converter enters the hydraulic coupling state, and then the pulse torque converter is unlocked and continues to work; when the pulse torque converter fails to perform automatic torque conversion, it will move The pressure CVT starts automatically, and the vehicle drives in low and medium speed limited gears. When the dynamic pressure CVT also fails, the hydraulic torque converter automatically starts, and the driver is prompted to perform harmless braking to stop.
  • the vehicle when applied to a car, after starting the vehicle, the vehicle starts to enter the preheating stage.
  • the balance valve 307 and the secondary cylinder isolation valve 309 are closed, the hydraulic cylinder isolation valve 106 is opened, and the oil pump 305 is The oil drawn from the oil cylinder 301 enters the primary pressure accumulating cylinder 303, a part of the oil enters the secondary pressure accumulating cylinder 304 through the main balance valve 306, and then the oil passes through the active cone wheel cylinder 103, the main cooler 104, and the main flow device.
  • the metal belt 101 After preheating, the metal belt 101 obtains the rated initial tension and stores energy therein, the distance changer isolation valve 202, the main compartment shut-off valve 310 and the slave compartment shut-off valve 308 are closed, and the clutch is closed and the vehicle starts to start.
  • the AI module 1000 matches the optimal target input speed of 12000 from the database to the TCU 2000, and then generates the target speed ratio of 1300 according to the real-time output speed of 3800, and further generates the target speed ratio pulse value of 1400; then reads from the pulse encoder 3700 Take the stepper motor pulse value 2400, and further generate the real-time speed ratio pulse value 2500, and then subtract the target speed ratio pulse value 1400 and the real-time speed ratio pulse value 2500 to obtain the target pulse variable 1500; the dynamic throttle speed 2100 and the target input speed 1200 Subtract to generate the throttle speed difference, and calculate the throttle pulse variable 2300, then add the throttle pulse variable 2300 and the target pulse variable 1500 to generate the dynamic pulse total variable 2600; further generate the stepper motor target pulse variable 3100, by the stepper motor 204 completes the pulse variable and obtains the ideal real-time output speed.
  • the oil cylinder cooler 302 performs temperature
  • the AI system automatically matches the optimal working condition target input speed plan from the database to execute safe limit gear driving, and can move up and down within the safe limit gear range .
  • the emergency situation needs to be cancelled, just press and hold the control button on the steering wheel to terminate, release the button to resume execution immediately.
  • the TCU will automatically issue a command to pressurize the clamping force of the cone wheel.
  • a pressure adjustment command is issued to the balance valve 307 to make the secondary pressure accumulate
  • the pressure of the cylinder 304 is increased to a predetermined value; then the variable-pitch force isolation valve 202 is connected, and the variable-pitch force shut-off valve 210 is closed at the same time.
  • the stepping motor 204 and the bidirectional piston 20 are in a stopped state; finally the TCU sends out the opening of the main compartment shut-off valve
  • the command of 310 and slave shut-off valve 308 immediately completes the pressurization task; after the special working condition is removed, the slave balance valve 307 is closed, and the pressure composition is reversed; when a large long slope or steep slope is detected, the TCU will change the constant pressure torque
  • the device 201 issues a downshift command. This design reduces the trouble of frequent upshifts and downshifts under the premise of safety.
  • the TCU will automatically activate the backup dynamic pressure CVT torque conversion system.
  • the torque conversion isolation valve 202 is connected, the variable distance force stop valve 210 is closed, and the constant pressure distance converter 201 Stop working; then the secondary cylinder isolation valve 309 is closed, the primary pressure accumulating cylinder 303 provides clamping force to the driving cone 102 through the main balancing valve 306, and the primary pressure accumulating cylinder 303 provides the driven cone 102 through the slave balancing valve 307 107 clamping force;
  • TCU matches the best speed ratio according to the working conditions, and sends pressure adjustment commands to the main balance valve 306 and the slave balance valve 307 respectively.
  • the driving cone wheel 102 and the driven cone wheel 107 are pressure-changed, and the TCU provides real-time feedback , By adjusting the pressure in the main and driven cone wheel cylinders to achieve the actual speed ratio tracking the target speed ratio, further matching the optimized dynamic speed ratio, so that the gearbox works along the target working line, and the gearbox executes dynamic hydraulic pressure
  • the torque conversion function of the system enables the vehicle to drive safely in the middle and low gears; if the backup dynamic pressure torque conversion system also fails, the hydraulic torque converter automatically starts and prompts the driver to perform harmless braking to stop.
  • the constant voltage pulse torque converter defined in the patent of the invention can be used to produce continuously variable automatic transmissions for automobiles.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

L'invention concerne un convertisseur de couple d'impulsion à tension constante, comprenant : un système de force de serrage, un convertisseur de couple d'impulsion (201), un système d'accumulation de pression secondaire, un système de refroidissement et un système de commande. Étant donné que la conception d'une conversion de couple d'impulsion à tension constante est utilisée, une transmission automatique précise et continue est véritablement mise en œuvre, et l'objectif de réduction de la consommation d'énergie est atteint. Pendant un processus de conversion de couple, du fait que le système d'accumulation de pression secondaire peut être commandé indépendamment, un changement de vitesse manuel peut encore être utilisé lorsque la transmission automatique échoue, ce qui permet d'augmenter la stabilité du véhicule et d'éviter la perte de tension d'une courroie métallique. Étant donné que la force de serrage d'une poulie et la tension de la courroie métallique restent généralement inchangées pendant tout le processus de conversion de couple, la conversion de couple est plus facile et plus flexible, et le choc est réduit. Comme la courroie métallique ne fonctionne pas sous tension finale, la température de la poulie est réduite et la durée de vie de la courroie en acier est prolongée. Étant donné qu'un codeur d'impulsions est utilisé comme porteuse d'un signal d'engrenage, le signal d'engrenage d'impulsion mécanique correspondant évite efficacement le problème de perte de signal d'engrenage provoquée par une interruption de signal occasionnelle. Du fait de la fourniture d'un système d'intelligence artificielle (AI), des systèmes de rapport de vitesse optimaux peuvent être mis en correspondance pour plusieurs conditions de travail en temps réel, ce qui permet de réduire davantage la consommation d'énergie et de fournir une fondation pour l'Internet des objets et la conduite autonome. Le système de refroidissement est amélioré, et ainsi, le refroidissement est plus efficace. Une transmission à variation continue (TVC) à pression dynamique et un convertisseur de couple hydraulique sont fournis en tant que secours du système de conversion de couple, et ainsi, le véhicule peut fonctionner plus sûrement. Le convertisseur de couple d'impulsion à tension constante élimine complètement des défauts de produit de TVC ayant des convertisseurs de couple simple ou double, provoqués par une "interruption de signal" occasionnelle.
PCT/CN2020/103009 2019-08-13 2020-07-20 Convertisseur de couple d'impulsion à tension constante WO2021027495A1 (fr)

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CN202080001306.2A CN114901973B (zh) 2019-08-13 2020-07-20 恒压脉冲变矩器

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