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35results about How to "Good pedal feel" patented technology
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Servo brake cylinder used for distributed composite brake system, distributed composite brake system adopting servo brake cylinder and brake method of distributed composite brake system adopting servo brake cylinder
PendingCN108443368ARapid build-up of brake pressureFast dynamic responseBrake actuating mechanismsActuatorsBall screwControl engineering
The invention discloses a servo brake cylinder used for a distributed composite brake system, the distributed composite brake system adopting the servo brake cylinder and a brake method of the distributed composite brake system adopting the servo brake cylinder. The servo brake cylinder comprises a shell body, an electromotor, a coupler, a ball screw assembly composed of a nut and a lead screw, abearing, a retainer ring, a piston, a cylinder body and a return spring, wherein an inner hole is formed in the center of the piston, the inner hole comprises a tapered first conical surface, a cylindrical surface and a gradually-expanded second conical surface, the left end of the lead screw extends in the axial direction to sequentially form a tapered third conical surface, a cylindrical surfaceand a gradually-expanded fourth conical surface, the first conical surface cooperates with the fourth conical surface to form an output valve, and the second conical surface cooperates with the thirdconical surface cooperate to form an input valve. According to the servo brake cylinder used for the distributed composite brake system, the distributed composite brake system adopting the servo brake cylinder and the brake method of the distributed composite brake system adopting the servo brake cylinder, the advantages of being compact in structure, flexible in control, high in braking response, high in braking pressure control precision, reliable in failure protection capability, low in manufacturing cost and the like are achieved, so that an intelligent driving automobile is good in motion stability and high in reliability during braking.
Owner:南京经纬达汽车科技有限公司
Motor-integrated electric control brake master cylinder driving system
ActiveCN104442784AGood pedal feelDifferent braking functionsBraking action transmissionActive safetyHydraulic control unit
The invention discloses a motor-integrated electric control brake master cylinder driving system and aims at solving the problem that an existing hydraulic brake system is large in power-assisted volume and poor in active safety function and pedaling feeling during braking. The motor-integrated electric control brake master cylinder driving system comprises a brake pedal operating mechanism, a motor executing mechanism and a hydraulic control unit. The motor executing mechanism comprises a lead screw threaded rod mechanism, a stroke return mechanism, an input sealing mechanism, a housing mechanism, a lead screw threaded rod driving mechanism and a rotor position sensor. The stroke return mechanism is installed in a front end cover, the lead screw threaded rod mechanism is installed on the front end cover and a middle end cover through bearings and located in a rear end cover, the right end face of a stroke return spring rear seat of the stroke return mechanism is in contact with the left end face of a lead screw threaded rod in the lead screw threaded rod mechanism, a third-section shaft of a lead screw nut in the lead screw threaded rod mechanism is sleeved with the lead screw threaded rod driving mechanism, a first-section shaft of the lead screw nut is sleeved with the rotor position sensor, and the input sealing mechanism is installed in a first stepped blind hole of the lead screw threaded rod.
Owner:JILIN UNIV
Hydraulically coupled electro-hydraulic brake system
ActiveCN109177944ASimple control algorithmEasy to controlBraking action transmissionFoot actuated initiationsSolenoid valveEngineering
The present invention relates to a hydraulically coupled electro-hydraulic braking system, aiming at solving some problems existing in the current electro-hydraulic brake system. The hydraulically coupled electro-hydraulic braking system includes a manpower hydraulic cylinder, a booster cylinder, a brake master cylinder, brake pedal, pedal stroke sensor, booster motor, booster transmission assembly, normally open solenoid valve, normally closed solenoid valve, check valve A, check valve B, hydraulic control unit HCU, hydraulic pressure sensor, an electronic control unit ECU, and other structures. The hydraulically coupled electro-hydraulic braking system has three working modes of conventional braking, active braking and failure backup, and has the structure of hydraulic cylinder. The invention adopts a novel hydraulic coupling scheme, eliminates the reaction disk structure, the pedal force of the driver and the brake assisting force are coupled through the hydraulic mode, and the control algorithm of the whole brake system is simplified because the reaction disk structure is eliminated, and the control method is convenient to control.
Owner:JILIN UNIV
Electronic hydraulic braking system with multiple working modes
PendingCN105946837AReduced torque requirementsReduce operating frequencyBraking action transmissionHydraulic control unitSolenoid valve
The invention belongs to the technical field of automobile braking systems and discloses an electronic hydraulic braking system with multiple working modes. The electronic hydraulic braking system mainly comprises a braking pedal, a braking pedal displacement sensor, an active control booster, 2 / 2 normally-closed solenoid valves, an active pedal sense simulator, a hydraulic control unit, an electronic control unit, a braking main cylinder and braking wheel cylinders. The electronic hydraulic braking system adopts a double-power source braking system form, so that the fault-tolerant capability of the system can be improved, the relatively steady pedal sense can be guaranteed during the switching of various braking conditions, and furthermore, the relatively high pressurizing response speed of the system can be guaranteed.
Owner:JILIN UNIV
Vehicle braking system and master cylinder
ActiveUS20100244549A1Good pedal feelingGood pedal feelRotary clutchesFluid braking transmissionMaster cylinderValve opening
Provided are a vehicle braking system and a master cylinder which are capable of providing a good pedal feel. A valve-opening pressure for a pressure-reducing valve of the master cylinder is set higher than a hydraulic pressure which is obtained with a pressing force on a brake pedal being 500 N and lower than a hydraulic pressure obtained at a time when a booster reaches a full-load point in case of failure of the booster so as to be specialized for improving pedal feel. Required performance in case of failure of the booster is realized by a pressure-intensifying unit.
Owner:HITACHI ASTEMO LTD
Brake pedal of adjustable lever
InactiveCN102935845AConvenience Pedal ParametersGood pedal feelFoot actuated initiationsDriver/operatorBraking system
The invention discloses a brake pedal of an adjustable lever. The brake pedal comprises a pedal base, a pedal bracket and a pedal arm, wherein the pedal arm is mounted on the pedal bracket; the pedal bracket is mounted on the pedal base; the pedal base is connected with a vehicle body through a bolt; the pedal arm is composed of two separated parts up and down; the two parts of the pedal arm move relatively; and the pedal arm is adjustable in the length direction. Through the invention, the pedal-lever ratio can be automatically adjusted according to different needs for the pedal feeling of the driver, and convenient pedal parameters can be provided for the performance matching of the brake system so as to design a brake system with better pedal feeling; and moreover, the manufacturing and maintenance cost are low, the service life is long, etc.
Owner:ANHUI YUFENG AUTOMOTIVE TECH
Vehicle brake device
ActiveCN102892650AImprove regeneration efficiencyIncrease fuel consumptionHybrid vehiclesBraking element arrangementsRegenerative brakeMaster cylinder
Disclosed is a vehicle brake device that can achieve high regenerative efficiency and high fuel efficiency as well as apply basic hydraulic braking force as quickly as possible when a brake pedal has been suddenly applied, by proactively utilizing regenerative braking in a low tread force range from when the brake pedal is first pressed until said pedal reaches a predetermined state. The vehicle brake device provides a first port (23h), which connects to a reservoir tank (24) and is provided in a first hydraulic pressure chamber (23d) of a master cylinder (23), between a first position that corresponds to the status at which a blocking end of a first piston (23b) that blocks said port (23h) starts be depressed and a second position that corresponds to a predetermined status that is removed a predetermined distance (S) in the pressure-increase direction of the first piston (23b). An orifice is provided in the first port (23h) that is configured to control the flow of brake fluid from the master cylinder to the reservoir tank when the brake pedal is depressed suddenly and, conversely, to not control said flow when said brake pedal is not depressed suddenly.
Owner:ADVICS CO LTD
Brake caliper seal groove
InactiveUS20120091666A1Easy and smooth cuttingSufficient materialEngine sealsBraking elementsStructural engineeringEngineering
A seal groove comprising: a back wall; a front wall opposed to the back wall; a bottom wall connected to the front wall and the back wall; and a recess in the front wall connecting the front wall to the piston bore; wherein the recess includes a peak which comprises: a first angled portion and a second angled portion.
Owner:AKEBONO BRAKE
Brake control system and brake control method
InactiveUS20100295363A1Good pedal feelingGood pedal feelAnalogue computers for trafficBraking action transmissionEngineeringWheel cylinder
A brake control system includes a wheel cylinder, a brake pedal, a master cylinder in which communication between it and an external master cylinder reservoir is cut off when the operating amount of the brake pedal is equal to or greater than a predetermined value, an internal reservoir, and a pump which selectively discharges hydraulic fluid in two directions, one being a direction that increases the hydraulic pressure in the wheel cylinder by drawing up hydraulic fluid from the internal reservoir, and the other being a direction that stores hydraulic fluid in the internal reservoir. The pump is driven to discharge hydraulic fluid in the direction that stores hydraulic fluid when communication is open between the master cylinder and the master cylinder reservoir, and driven to discharge hydraulic fluid in the direction that increases the hydraulic pressure when communication is cut off between the master cylinder and the master cylinder reservoir. A further invention is directed to a brake control method.
Owner:TOYOTA JIDOSHA KK
Brake control system and brake control method
Owner:TOYOTA JIDOSHA KK
Negative pressure doubling device
InactiveCN1809485ASimple structureReduce in quantityBraking action transmissionControl theoryLow input
In the negative pressure doubling device of the invention, a threshold line is set for starting a BA operation at a pedal stepping speed not less than a set speed, and the inclination of the threshold line is set equal to that for a servo ratio (SR2) smaller than a servo ratio (SR1) for normal brake operation in a low input region (small pedal stepping force region), while in a high input region (large pedal stepping force region) it is set equal to the size of a servo ratio (SR1) during normal brake operation. That is, the threshold line for starting the BA operation is adjustable for low input and high input. And even if the brake pedal is stepped at a stepping speed not less than the set speed in spite of not being in an emergency, the BA operation is not performed; thus, unnecessary BA operation is prevented. In an emergency and when the brake pedal is stepped at a stepping speed not less than the set speed and with more than a set stepping force, the BA operation is performed.
Owner:BOSCH CORP
Electric vehicle braking energy recovery control method
ActiveCN111791714AImprove recycling efficiencyImprove accuracySpeed controllerElectrodynamic brake systemsSteering wheelElectric machinery
The invention provides an electric vehicle braking energy recovery control method, which comprises the steps of determining the driving working condition of an electric vehicle according to accelerator pedal information and brake pedal information; when the driving working condition of the electric vehicle is a sliding working condition, conducting sliding braking energy recovery; when the drivingworking condition of the electric vehicle is a braking working condition, determining a braking strategy of the electric vehicle according to the opening degree of a brake pedal; and when the electric vehicle is braked by adopting motor braking and mechanical braking together, acquiring the reverse drag force torque of the motor according to the braking deceleration information and the steering wheel angle information, and controlling the motor according to the reverse drag force torque. According to the scheme, the driving working condition of the electric vehicle is determined according tothe accelerator pedal information and the brake pedal information, then the reverse drag torque of the motor is requested for the sliding working condition and the braking working condition, and the electric vehicle is braked by utilizing the reverse drag torque. Different motor reverse drag torques are requested according to different working conditions, so that the energy recovery efficiency canbe improved.
Owner:摩登汽车有限公司
Vehicle braking system and master cylinder
ActiveUS8807668B2Good pedal feelRotary clutchesFoot actuated initiationsMaster cylinderValve opening
Provided are a vehicle braking system and a master cylinder which are capable of providing a good pedal feel. A valve-opening pressure for a pressure-reducing valve of the master cylinder is set higher than a hydraulic pressure which is obtained with a pressing force on a brake pedal being 500 N and lower than a hydraulic pressure obtained at a time when a booster reaches a full-load point in case of failure of the booster so as to be specialized for improving pedal feel. Required performance in case of failure of the booster is realized by a pressure-intensifying unit.
Owner:HITACHI ASTEMO LTD
Electric power brake system with arbitrarily decoupled degrees of freedom for electric vehicles
ActiveCN108128297AGood braking attitudeSimple structureBraking action transmissionDriver/operatorRegenerative brake
The invention provides an electric power brake system with arbitrarily decoupled degrees of freedom for electric vehicles to solve the problems that the existing electric power brake system has a complex assistance mechanism, a single decoupled situation, and a poor sense of maintaining the pedal. The brake pedal assembly is connected with the brake master cylinder through the electric power assembly. A decoupled device assembly is arranged on the pipeline between the brake master cylinder and the HCU, and the power motor assembly is connected with the electric assist assembly. When decoupled,the front and rear axle brake friction can be properly allocated through the control of the solenoid valve, thus achieving decoupling of any degree of freedom and ensuring that the car can maintain agood braking posture even in the case of regenerative braking; under any decoupled conditions, the control of the power motor can ensure that the brake pedal feel remains the same, the driver's senseof road cannot be affected when braking, no additional failure backup mechanism is required, and the vehicle can be slowed down or stopped through human power when the system fails to improve drivingsafety.
Owner:JILIN UNIV
Method for operating a brake system of a motor vehicle
InactiveCN101134458AImprove responsivenessShort braking strokeBraking systemsEngineeringBraking system
Owner:ROBERT BOSCH GMBH
Pneumatic brake booster with reduced noise levels
InactiveUS6848352B2Low volume of soundLower the volumeBraking action transmissionServomotorsElastomerNoise level
A pneumatic brake booster comprising an envelope formed of two shells (3, 5) defining an interior volume divided into two chambers by a skirt mounted so that it can slide with sealing. The skirt (7) is actuated by a pressure difference brought about by the operation of a three-way valve (17) arranged in a pneumatic piston arranged more or less in the central part of the skirt. The booster also comprising means (53) for reducing the noise, characterized in that the means (53) are bearing means comprising a layer of elastomer arranged between one of the shells (3, 5) and a rigid element.
Owner:ROBERT BOSCH GMBH
Pedal lever ratio adjusting control method and system
ActiveCN109572639AEnsure driving safetyOvercome the time-consuming and labor-intensive shortcomings of manual adjustmentFoot actuated initiationsBraking componentsElectricityControl system
The invention provides a pedal lever ratio adjusting control method and system. The control method includes the following steps: powering a vehicle on; starting a lever ratio adjusting function; collecting and judging whether speed information and shift information accord with requirements; driving a pivot shaft of a pedal arm to slide if the speed information and the shift information accord withthe requirements; changing the position of the pivot shaft corresponding to a vehicle body; keeping the position of a pedal corresponding to the vehicle body unchanged; and adjusting the lever ratioof the pedal. The control method can adjust the lever ratio of the pedal and keep the position of the pedal corresponding to the vehicle body unchanged, so that the time-consuming and labor-consumingdeficiencies of manually adjusting can be overcome, matching time can be saved, and optimal pedal feelings can be realized; and the control method is suitable for adjusting with the individual difference of drivers, so that the method is good in universality, and can effectively guarantee the driving safety of the drivers.
Owner:GREAT WALL MOTOR CO LTD
Integrated pedal feeling simulator with failure protection function
PendingCN110228456AGood pedal feelEnsure safetyBraking action transmissionFoot actuated initiationsDriver/operatorSolenoid valve
The invention relates to an integrated pedal feeling simulator with a failure protection function. The integrated pedal feeling simulator comprises a brake pedal, a push rod and a decoupling sleeve, anormally closed solenoid valve, a normally open solenoid valve, front and rear end covers, and an integrated cylinder body, wherein two pedal feeling simulator pistons and two springs play a role inpedal feeling simulation, and two brake master cylinder pistons and two springs play a role in failure protection and recovery. A brake master cylinder transmission cavity is formed between the decoupling sleeve and a first piston rod part of the brake master cylinder; a pedal feeling simulator transmission cylinder is formed between the decoupling sleeve and the first piston of the pedal feelingsimulator, and the opening and closing combination of the solenoid valve enables the pedal feeling simulator transmission cylinder and the brake master cylinder transmission cylinder to act under different working conditions, so that the failure protection function is realized. The integrated pedal feeling simulator not only can ensure that the driver has a good pedal feeling, but also can ensurethat braking force can be manually provided when brake-by-wire fails, and meanwhile, the integrated pedal feeling simulator is simple and compact in structure and convenient to integrate.
Owner:SOUTH CHINA UNIV OF TECH +1
Vehicle, pedal structure and elastic mechanism for pedal
ActiveCN104842976ATorque increases monotonicallyGood pedal feelFoot actuated initiationsEngineeringTreadle
The invention discloses a vehicle, a pedal structure and an elastic mechanism for a pedal. The elastic mechanism comprises a frame, and an elastic piece arranged on the frame, wherein one end of the elastic piece can be fixed, and the other end can be in moving fit with a pedal arm of the pedal; when the pedal arm is suffered from external force to enable the other end of the elastic piece to rotate by surrounding the frame so as to store energy, return force provided by the elastic piece in a rotation tangential direction of the other end of the elastic piece is increased in a monotone manner, and a force arm of the return force is increased in a monotone manner, that is, the force and the force arm are synchronously increased in a monotone manner without being counteracted, so that the torque of the pedal arm of the product of the force and the force arm is increased in a monotone manner, and an excellent pedal feeling can be provided under an effect of applying less force to users, that is, an excellent brake feeling is provided to drivers.
Owner:BEIQI FOTON MOTOR CO LTD
A hydraulically coupled electro-hydraulic braking system
ActiveCN109177944BSimple control algorithmEasy to controlBraking action transmissionFoot actuated initiationsDriver/operatorSolenoid valve
Owner:JILIN UNIV
Integrated sub master cylinder wire control hydraulic brake system
ActiveCN106915343BHighly integratedGood pedal feelBraking action transmissionFoot actuated initiationsMaster cylinderSolenoid valve
The invention discloses a wire-control hydraulic braking system with an integrated vice master cylinder. The problems that the integration level is low, the braking pressure is relatively slowly set up by a motor, brake pressure variation is large, and pressure setting up accuracy is low are solved. The wire-control hydraulic braking system comprises a braking starting unit, a braking master cylinder, a braking vice master cylinder unit and an electromagnetic valve unit; the braking vice master cylinder unit comprises a motor and the braking vice master cylinder; the electromagnetic valve unit comprises a first two-position three-way electromagnetic valve, a second two-position three-way electromagnetic valve, a fifth constantly-open electromagnetic valve, a second constantly-close electromagnetic valve and a third constantly-close electromagnetic valve; the braking starting unit is connected with a first piston of a master cylinder body of the braking master cylinder through an input push rod of the braking starting unit; the braking master cylinder is in pipeline connection with the electromagnetic valve unit through the fifth constantly-open electromagnetic valve; the braking vice master cylinder is in pipeline connection with the electromagnetic valve unit through the first two-position three-way electromagnetic valve, the second two-position three-way electromagnetic valve, the second constantly-close electromagnetic valve and the third constantly-close electromagnetic valve; and the motor and the braking vice master cylinder are connected with a first vice master cylinder piston through an output shaft in the motor.
Owner:JILIN UNIV
A pedal feel simulator with variable pedal feel
ActiveCN113104011BSimple structureGood pedal feelFoot actuated initiationsDriver/operatorSolenoid valve
The invention relates to a pedal feeling simulator with variable pedal feeling, comprising a simulation cylinder, a first piston, a second piston, a third piston, a fourth piston, a fifth piston, a first spring, a second spring and a third spring , pedal cylinder, first solenoid valve, second solenoid valve, third solenoid valve, electric control unit ECU and pedal displacement sensor; the pedal feeling simulator with variable pedal feeling of the present invention includes three kinds of pedal feeling modes, and the structure It is simple and can provide good pedal feeling. The spring is mainly used as the component to generate the pedal feedback force. Different spring combinations are used to simulate the pedal feeling in different braking stages, and the on-off of the hydraulic circuit can be controlled by the opening and closing of the solenoid valve. Different combinations of springs in the working state achieve different pedal sensations, and drivers can choose different pedal sensation modes according to their own driving habits to achieve a better driving experience.
Owner:JILIN UNIV
clutch pedal unit
InactiveCN104661850BLow costReduce running noiseControlling membersLimiting/preventing/returning movement of partsSpring forceCoil spring
Clutch pedal devices are known which comprise a rotatably mounted clutch pedal and means for generating a specified pedal force curve over the pedal path, said means comprising a pedal arm which is non-rotatably connected to the clutch pedal and which can be moved against a spring force of a helical spring. Disadvantageously, only a linearly increasing pedal force curve over the pedal path can be achieved using said design. Thus, a pedal sensation is produced which strongly deviates from the pedal sensation produced when using a conventional clutch pedal which hydraulically actuates the clutch. In the clutch pedal device according to the invention, the pedal force curve over the pedal path also has a section with a negative slope after a section with a positive slope. In this manner, a pedal sensation is produced which strongly resembles the pedal sensation when actuating a conventional clutch pedal which hydraulically actuates the clutch. According to the invention, the pedal arm (3) acts on a rotatably mounted lever arm (5), to which a counter force is applied, and is moved on a contour (6) of the lever arm (5) when the clutch pedal (1) is actuated.
Owner:ROBERT BOSCH GMBH
Pedal lever ratio adjustment control method and control system
ActiveCN109572639BEnsure driving safetyOvercome the time-consuming and labor-intensive shortcomings of manual adjustmentFoot actuated initiationsBraking componentsDriver/operatorControl system
The invention provides a pedal lever ratio adjusting control method and system. The control method includes the following steps: powering a vehicle on; starting a lever ratio adjusting function; collecting and judging whether speed information and shift information accord with requirements; driving a pivot shaft of a pedal arm to slide if the speed information and the shift information accord withthe requirements; changing the position of the pivot shaft corresponding to a vehicle body; keeping the position of a pedal corresponding to the vehicle body unchanged; and adjusting the lever ratioof the pedal. The control method can adjust the lever ratio of the pedal and keep the position of the pedal corresponding to the vehicle body unchanged, so that the time-consuming and labor-consumingdeficiencies of manually adjusting can be overcome, matching time can be saved, and optimal pedal feelings can be realized; and the control method is suitable for adjusting with the individual difference of drivers, so that the method is good in universality, and can effectively guarantee the driving safety of the drivers.
Owner:GREAT WALL MOTOR CO LTD
Energy feedback active braking system and control method with fail-safe capability
ActiveCN110182187BRealize dynamic control functionEnsure safetyBraking element arrangementsBraking action transmissionWheel cylinderControl theory
The invention relates to an energy feedback type active brake system with failure protection capability and a control method. The energy feedback type active brake system with the failure protection capability comprises an oil cup, a pedal power assisting mechanism, a brake master cylinder, a brake pedal, a pedal simulator, a servo pressure control module, a brake wheel cylinder and a braking controller; a mechanical input end of the brake master cylinder is connected with the brake pedal through the pedal power assisting mechanism; an inlet of the brake main cylinder is connected with the oilcup through an oil passage; an outlet of the brake main cylinder is correspondingly connected with the pedal simulator and the brake wheel cylinder through the servo pressure control module; the servo pressure control module is connected with the oil cup through an oil passage and is also connected with the braking controller through a signal wire; and the braking controller is used for controlling the servo pressure control module to realize switching of the system among an active pressure control state, a brake energy recovery state and a failure protection state. The energy feedback type active brake system with the failure protection capability can be widely applied to the field of vehicle hydraulic active braking control.
Owner:TSINGHUA UNIV
Electric vehicle braking energy recovery control method
ActiveCN111791714BImprove recycling efficiencyImprove accuracySpeed controllerElectrodynamic brake systemsSteering wheelElectric machinery
The invention provides a braking energy recovery control method for an electric vehicle, which includes determining the driving condition of the electric vehicle according to the accelerator pedal information and the brake pedal information; and performing coasting braking when the driving condition of the electric vehicle is a coasting condition energy recovery; when the driving condition of the electric vehicle is the braking condition, the braking strategy of the electric vehicle is determined according to the opening of the brake pedal; When the electric vehicle is braking, the anti-drag torque of the motor is obtained according to the braking deceleration information and the steering wheel angle information, and the motor is controlled according to the anti-drag torque. This scheme determines the driving condition of the electric vehicle according to the information of the accelerator pedal and the brake pedal, and then requests the anti-drag torque of the motor for the sliding and braking conditions, and uses the anti-drag torque to brake the electric vehicle . By requesting different motor anti-drag torques according to different working conditions, the efficiency of energy recovery can be improved.
Owner:摩登汽车有限公司
Electric vehicle regenerative braking system and regenerative braking method thereof
ActiveCN104477038BEasy to controlCooperate wellBraking action transmissionElectrodynamic brake systemsBrake torqueRegenerative brake
The invention discloses a regenerative braking system and a regenerative braking method for an electric vehicle. According to the technical scheme, when a driver brakes, requirements on a braking torque are calculated through a pressure sensor in an ESC (Electronic Stability Control), a regenerative braking torque which can be provided by the electric vehicle is obtained through a CAN (Controller Area Network), and depressurization or pressurization is judged through the required braking torque and the regenerative braking torque. According to the technical scheme, the braking torque is finely controlled, the driver feels comfortable when braking and feels good when stepping on a pedal, and energy is fully recovered.
Owner:WUHU BETHEL AUTOMOTIVE SAFETY SYST
Pedal feeling simulator with changeable pedal feeling
The invention relates to a pedal feeling simulator with changeable pedal feeling, which comprises a simulation cylinder, a first piston, a second piston, a third piston, a fourth piston, a fifth piston, a first spring, a second spring, a third spring, a pedal cylinder, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, an electronic control unit (ECU) and a pedal displacement sensor. The pedal feeling simulator with the changeable pedal feeling comprises three pedal feeling modes, is simple in structure, can provide good pedal feeling, mainly adopts springs as elements for generating pedal feedback force, simulates pedal feelings in different brake stages through different spring combinations, on-off of the hydraulic loop can be controlled through opening and closing of the electromagnetic valve, different pedal feelings are achieved through different combinations of the springs in the working state, a driver can select different pedal feeling modes according to own driving habits, and better driving experience is achieved.
Owner:JILIN UNIV
Automobile composite braking system
ActiveCN101734164BLow cost of combinationStrong anti-dirt abilityElectrodynamic brake systemsWheel speed sensorPure electric vehicle
Owner:TSINGHUA UNIV
Braking energy recycling device of electric automobile and method for controlling braking energy recycling device
ActiveCN102765378BGood pedal feelSimple structureBraking action transmissionFeedback controllerTraction control system
The invention relates to a braking energy recycling device of an electric automobile and a method for controlling the braking energy recycling device. The braking energy recycling device comprises a control system and a hydraulic braking system, wherein the control system comprises a finished automobile controller, an anti-skid braking system / traction control system / electronic stability program (ABS / TCS / ESP) controller, a motor controller, a driving motor and a feedback controller connected with a hydraulic valve block; the hydraulic braking system comprises a braking master cylinder, a braking pedal, a pressure adjuster, a front wheel braking cylinder, a rear wheel braking cylinder and the hydraulic valve block; the hydraulic block comprises two braking oil circuits, a pedal simulator shared by the two braking oil circuits and a master cylinder pressure sensor and a wheel cylinder pressure sensor which are arranged on one of the two braking oil circuits; and the feedback controller comprises a communication module, a pressure acquisition module, a control module and a driving module. The braking energy recycling device is simple in structure, small in size and low in cost; by the braking energy recycling device, a driver can have the same pedalling feeling as that of the conventional automobile; and the braking energy recycling device can be widely applied to various pure electric automobiles and hybrid electric automobiles.
Owner:TSINGHUA UNIV
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