93 results about "Master cylinder" patented technology

The utility model provides a kind of brake master cylinder machining positioning jig, it is related to positioning tooling technical field, including bottom plate, first positioning block, second positioning block and first pressure cylinder are set on bottom plate, first positioning block is opened with U-shaped gap, second positioning block is in convex type, first pressure cylinder is set in the side of second positioning block away from first positioning block, the piston rod of first pressure cylinder sets first pressing block. When using, one end of pump body is placed in U-shaped gap, and the middle position of pump body is placed in second positioning block, control first pressure cylinder to press pump body in first positioning block, i.

An ABS device for a hydraulic braking system of a bicycle or motorcycle, in particular for bicycles, comprises an electrically actuated valve unit (13) which is switchable between a first operating state in which a master cylinder (2) associated with a brake lever is in contact with an actuating cylinder (3) of a brake device and a second operating state in which the connection is interrupted and the actuating cylinder (3) of the brake device is in contact with a fluid accumulator (9).An electronic control (E) is designed to control the position of the moving element (11) of the fluid accumulator (9) both during activation of the ABS function and during deactivation of the ABS function in order to effect: a non-abrupt, but progressive, change in the pressure (CP) in the line (8) connected to the actuating cylinder (3) of the brake device (F), as a function of the rotational speed (ω) of the wheel (R1) to which the brake device is assigned, and as a function of a second parameter, which is the pressure (CP) in the actuating cylinder (3) of the brake device or the deceleration of the vehicle, which is detected or calculated from a sensor assigned to the vehicle.

The present invention relates to an anti-lock braking system (ABS) module (200) for a vehicle having an integrated DC-DC converter (114). The ABS module (200) comprises at least one pump (102) connectable to a brake master cylinder (104), at least one electric motor (106) for operating the at least one pump (102), at least one valve (108) in fluid communication with the at least one pump (102), and a control unit (110) powered by a main power supply (112) through the DC-DC converter (114) to operatively control the at least one electric motor (106) and the at least one valve (108), characterized in that the DC-DC converter (114) is integrated within the control unit (110). In an embodiment of the invention, the electric power supplied to the at least one electric motor (106) and the at least one valve (108) is through the DC-DC converter (114).

The application provides a brake master cylinder with a stepped structure, which comprises a cylinder body, a cavity penetrating through the left end of the cylinder body, the cavity being composed of a left cavity and a right cavity, the diameter of the left cavity being larger than that of the right cavity, a piston one being connected to the right cavity, a piston two being connected to the left cavity, a spring one being arranged between the piston one and the bottom of the right cavity, a spring two being arranged between the piston one and the piston two, a limiting slot penetrating through the middle part of the piston one being arranged, a limiting rod being connected to the limiting slot, the limiting rod being fixedly connected to the cylinder body, a through hole being arranged on the right end surface of the piston one and being communicated with the limiting slot, a top rod being connected to the through hole and being movable leftward and rightward, a sealing part being arranged on the right end of the top rod and being capable of sealing the through hole, and a spring three being arranged to apply a leftward elastic force to the top rod. Under the same conditions, the brake master cylinder G shortens the braking distance of the automobile, improves the braking effect and reduces the accident risk when the brake in the cavity fails.

An accumulator assembly is interposed hydraulically between a source of pressurized fluid and at least one wheel brake of a corresponding first or second pair of wheels. The accumulator assembly includes a medium pressure accumulator, a nonpowered MPA fill valve interposed fluidically between a pump-side passage of the medium pressure accumulator and the source of pressurized hydraulic fluid, a powered MPA one-way valve interposed fluidically between a brake-side passage of the medium pressure accumulator and the at least one corresponding wheel brake, and an MPA check valve interposed fluidically between the brake-side passage of the MPA cavity and the at least one corresponding wheel brake. An electronic control unit is provided for controlling at least one of the secondary brake module and the master cylinder responsive to at least one braking signal. The accumulator assembly facilitates a non-powered evac / fill phase of lifetime operation of the brake system.

The present disclosure provides a vehicle brake and a control method thereof, the vehicle brake including a reservoir configured to store fluid therein, a hydraulic circuit configured to deliver hydraulic pressure to a wheel of a vehicle, a plurality of valves provided to regulate a flow of the fluid in the hydraulic circuit, and a master cylinder including a cylinder, a master piston movably disposed within the cylinder and having a pocket formed on one side of the master piston, and a center piston disposed within the cylinder and having a penetration hole formed in at least a portion of the center piston, wherein the penetration hole is formed to have a size smaller than a cross-sectional area of the pocket, and as the master piston moves, at least a portion of the center piston is inserted into the pocket and thus a pressurization area of the master piston is reduced.

The application discloses a kind of oil pipe, brake master pump, oil circuit connecting structure and dismounting method, it is related to brake master pump technical field, a kind of oil pipe includes: oil pipe body;Oil needle is sleeved in oil pipe body, oil needle and oil pipe body are communicated;Pressure holding ring is sleeved in the outside of oil pipe body and oil needle;First check valve is movably sleeved in pressure holding ring;First elastic member, one end of first elastic member and oil needle contact, the other end of first elastic member and first check valve contact;Sleeved in the outside of oil pipe body and pressure holding ring is screw nut.The technical effect of the application is that it not only has low complexity degree of sealing operation, and good sealing performance.

This application discloses a vehicle braking method, related devices, and a vehicle, relating to the field of vehicle control technology. During vehicle braking, the method can determine the risk of backward roll based on braking and driving status information. Once this risk is determined, the method controls the master cylinder to maintain a first pressure value or increases the pressure of the master cylinder based on the first pressure value, thereby eliminating the risk of backward roll. This method enables timely detection of backward roll risk during vehicle braking and timely elimination of the risk by controlling the master cylinder, preventing vehicle rollback, eliminating safety hazards, and ensuring vehicle safety.

The present application relates to the field of aviation brake wheel, in particular to a novel single-web aircraft brake master wheel, comprising: a brake assembly and a wheel assembly arranged on the landing gear shaft, the wheel assembly and the brake assembly are installed on the landing gear shaft to form the single-web aircraft brake master wheel, wherein the outer ring of the heat sink assembly and the inner wall of the outer cylinder of the hub assembly form a first heat dissipation channel, the inner ring of the brake shell assembly and the outer wall of the inner cylinder of the hub assembly form a second heat dissipation channel, the second heat dissipation channel is communicated with the through hole arranged on the end surface of the brake shell assembly, the airflow output by the cooling fan assembly in the air collecting cavity passes through the heat dissipation holes arranged on the hub web, the first heat dissipation channel and the second heat dissipation channel to take the heat of the heat sink assembly to the outside of the brake assembly. The present application can dissipate the radiation heat of the heat sink assembly to the atmosphere outside the aviation wheel, greatly improving the cooling efficiency of the cooling fan on the heat sink assembly.

The present invention relates to a method (500) for obtaining information regarding the wear condition of a vehicle's brake system (100; 200; 300; 400). The brake system includes at least one hydraulic (1, 3) or electro-hydraulic (4) actuator of a disc brake (2) and at least one electronic processing unit (10, 10', 20, 20', 20a). The electronic processing unit is connected to at least one hydraulic or electro-hydraulic actuator and receives data representing a measured value of the pressure (p) of the brake master cylinder and a measured value of the stroke (x) of the brake master cylinder actuated by the actuator. The method provides at least one electronic processing unit with a parametric function (f) that represents the current state of the brake system (501) (this parametric function is adapted to describe the relationship between the stroke of the brake master cylinder and the brake pressure applied by the brake master cylinder as a function of one or more coefficients (θ0, ..., θn).) and a supervisor block (21) of at least one electronic processing unit detect one or more brake samples within the brake detection time interval, and after the detection of each brake sample, activate an estimation block (22) of at least one electronic processing unit (502); the estimation block receives a first pressure measurement (pi) and a first stroke measurement (xi) of the brake master cylinder during each of the one or more brake samples (503); the estimation block estimates a plurality of first parametric function coefficients (θi0, …, θin) associated with each brake sample based on the first pressure measurement and the first stroke measurement of the brake master cylinder (504); the supervisor block (21) activates a filtering block (23) of at least one electronic processing unit at the end of the brake detection time interval (505); the filtering block (23) filters the plurality of first coefficients associated with each brake sample and provides a plurality of second filtering coefficients (θ'0, …, θin) to the supervisor block The supervisor block (21) generates (506) ..., θ'n); the supervisor block (21) verifies the second filter coefficients (507) (this generates verified coefficients (VC1, ..., VCn) that define the first parametric function (f') representing the state of the brake system after the brake detection time interval). This includes transmitting verified coefficients to a wear estimation block (24) of at least one electronic processing unit to generate first information (WI) representing the wear condition of the friction material of the brake system (508).

The embodiment of the application provides a control strategy and a control system when a braking function of an electric drive system fails, and belongs to the technical field of electric vehicles. The control strategy comprises the following steps: obtaining a brake master cylinder stroke effectiveness signal of a vehicle; judging whether the brake master cylinder stroke effectiveness signal is effective; in the case that the brake master cylinder stroke effectiveness signal is judged to be effective, performing a drive torque limiting operation or a feedback torque limiting operation; in the case that the brake master cylinder stroke effectiveness signal is judged to be ineffective, performing a torque limiting operation; judging whether a brake fault occurs in the vehicle; and in the case that the vehicle is judged to have a brake fault, controlling the motor to enter an ASC mode or an FW mode. The control strategy and the control system can make the motor enter a safe state in time when the braking function of the vehicle fails, and ensure the safety of the vehicle driving.

1. The name of the design product: integrated hydraulic booster with master cylinder assembly. 2. The use of the design product: the design product is used for hydraulic brake assist system. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 2.

This utility model discloses a brake pedal and master cylinder connection structure, including a mounting bracket (1) installed on the vehicle body. The mounting bracket (1) has a pedal arm (2) on its inner side. One end of the pedal arm (2) is connected to the mounting bracket (1). The mounting bracket (1) has a push rod (3) in the middle. The push rod (3) passes through the mounting bracket (1) and is connected to the pedal arm (2). The other end of the pedal arm (2) has a pedal (4). The connection point between the pedal arm (2) and the push rod (3) is located between the two ends of the pedal arm (2). By changing the connection position and setting method of the push rod (3) and the pedal arm (2), the overall leverage ratio of the brake pedal (4) is improved, and the equipment such as the booster used for pedal assistance is removed, reducing the overall volume occupied by the equipment. This makes it easier to pedal the brake pedal (4) while also facilitating the layout of the vehicle and saving internal space.

1. Name of the product in this design: Vertical dual-piston brake master cylinder. 2. Purpose of this design: As a vertical dual-piston brake master cylinder for vehicles. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application discloses a hydraulic-assisted double-cavity brake master cylinder and belongs to the technical field of brake pumps. The master cylinder comprises a pump body and two pump units arranged side by side. Each pump unit comprises an oil filling cavity and an assisting cavity separated by an assisting piston, and an assisting cavity and a pressurizing cavity separated by a pressurizing piston. The assisting piston is fixedly connected with the pressurizing piston, and a spring is arranged in the assisting cavity. A cavity with a switch valve assembly is arranged in the assisting piston to control an oil path connecting the oil filling cavity and the assisting cavity. An oil channel with a one-way valve is arranged in the pressurizing piston. The double-cavity parallel structure can output large flow and realize rapid pressure building. During braking, the switch valve assembly is actuated, high-pressure oil from the oil filling cavity enters the assisting cavity, the assisting piston and the pressurizing piston are driven to move, and thus hydraulic assistance is provided, pedal force is significantly reduced, and brake torque is increased, and the master cylinder is particularly suitable for large agricultural machinery.

This utility model relates to the field of automotive parts technology, specifically a single-chamber mounting plate assembly for a brake master cylinder. It includes a mounting plate, a mounting plate connecting seat, a P-piston assembly, and mounting screws. The mounting plate has a through-hole for positioning. The mounting plate connecting seat is connected to the mounting plate and has a positioning protrusion on its outer side wall. The P-piston assembly includes a push rod, a P-piston, and a push rod seat. One end of the push rod is riveted to the push rod seat, and the other end is connected to the P-piston, extending through the mounting plate connecting seat. The mounting screws pass through the positioning hole, fixing the assembly to the valve block. This utility model eliminates the loosening and impact noise of traditional connections through the riveted connection of the P-piston assembly. The mounting plate and connecting seat are fitted with a 30-50mm interference fit, reducing vibration displacement and resonance, effectively lowering brake master cylinder noise, improving overall vehicle quietness, and meeting the requirements of one-box brake-by-wire systems.

A brake control method comprises: detecting a control instruction of a target vehicle to perform comfort braking; in response to the control instruction, increasing a pressure of a brake master cylinder first and then decreasing the pressure of the brake master cylinder at a first time and a second time; the first time is a time when a speed of the target vehicle is a first speed, and the first speed is a preset speed; the pressure of the brake master cylinder at the second time is equal to a demand pressure; the demand pressure is the pressure of the brake master cylinder when ordinary braking is performed; and the pressure of the brake master cylinder is decreased at the second time and a third time; and the third time is a starting time when the target vehicle is stationary.

This utility model provides a dual master cylinder brake caliper, comprising a mounting plate, a pump body, a terminal block, and a connecting assembly. The pump body is mounted on the bottom of the mounting plate; the terminal block is disposed at one end of the pump body; the connecting assembly is disposed between the pump body and the terminal block, and the connecting assembly includes a connecting sleeve, a connecting block, and a connecting member. The connecting sleeve is connected to one end of the pump body, the connecting block is pluggable into the inside of the connecting sleeve and connected to the terminal block, and the connecting member is disposed between the terminal block, the connecting block, and the connecting sleeve. This utility model provides a dual master cylinder brake caliper, which, by setting a connecting sleeve, a connecting block, and a connecting member between the mounting plate with the pump body and the terminal block, facilitates the replacement of the current method of fixing with multiple bolts, and also increases the stability of the entire device connection.

The application is suitable for the technical field of hydraulic machines, and provides a quick forging press control system and control method based on CBR, which comprises: an upper liquid charging tank installed on the top of a quick forging press host; a pump group installed on a ground base and connected with a lower power tank; the quick forging press host installed on the ground base and comprising a main cylinder, a side cylinder and a return cylinder; the lower power tank installed on the ground base and connected with the upper liquid charging tank; a return valve block installed in a pit, the return valve block being connected with the pump group and a quick forging accumulator unit; the quick forging accumulator unit installed in the pit and connected with the return cylinder; a main side cylinder pressure relief valve group installed on the top of the quick forging press host, the main side cylinder pressure relief valve group being connected with the upper liquid charging tank, the main cylinder and the side cylinder; and a main side cylinder pressure increasing valve group installed on the top of the quick forging press host, the main side cylinder pressure increasing valve group being connected with the upper liquid charging tank and the main side cylinder. The application has the advantages of action coordination, high forging precision and strong anti-interference capability, and is highly practical.

A vehicle's shifting system with protection against premature release of the clutch pedal, comprising a clutch (1), a clutch booster cylinder (2), a clutch position sensor (3), a control unit (4), a clutch pedal (5), and a clutch master cylinder (6), wherein the pedal (5) is mechanically connected to the piston rod of the master cylinder (6) via a linkage, the master cylinder (6) is connected to the clutch booster cylinder (2) via a hydraulic line (10), which is simultaneously connected to a compressed air supply (9) from the vehicle's compressed air system, for disconnecting the transmission of torque from the drive unit to the transmission, wherein the clutch (1) is provided with a position sensor (3) which is connected to the control unit (4) via an electrical line.which is connected via an electrical line to the windings of the valves for controlling the shifting of the gear stages in the transmission, wherein the control unit (4) is provided with a software module that contains information for switching on and off the supply of electrical energy to the windings of the valves based on the analysis of the information from the sensor (3) of the position of the clutch (1) and the gear stage preselected on the shift lever, characterized by an air control valve (7) with a control winding (8) which is arranged on the master cylinder (6), wherein the control valve (7) is connected via a line to the air system of the vehicle and the control winding (8) to the control unit (4), to protect against premature release of the pedal (5) of the clutch (1) during shifting of the preselected gear stage,wherein the software module of the control unit (4) also contains information for synchronizing the control of switching the control valve (7) on and off during the switching process.

A hydraulic brake master cylinder bite point adjustment assembly comprises a bite point adjustment knob 14 mounted on the top of a master cylinder reservoir housing and connected to a cam 22 within th

The application provides a brake pressure distribution method, device, controller and storage medium, and the method comprises the following steps: obtaining the stroke of a vehicle brake pedal, determining the pressurization parameter of a brake according to the stroke of the brake pedal; if it is determined that the stroke of the brake pedal is less than or equal to a preset depth, controlling the brake master cylinder electromagnetic valve of the vehicle to be closed; controlling the brake auxiliary master cylinder linear valve of the vehicle to be opened, so that the brake auxiliary master cylinder linear valve controls the liquid in the brake auxiliary master cylinder to enter the brake; controlling the pressurization electromagnetic valve of the left front wheel of the vehicle and the pressurization electromagnetic valve of the right front wheel of the vehicle to be closed; and controlling the pressurization electromagnetic valve of the left rear wheel of the vehicle and the pressurization electromagnetic valve of the right rear wheel of the vehicle to be opened, so that the motor of the vehicle controls the brake auxiliary master cylinder to pressurize the left rear wheel brake and the right rear wheel brake of the vehicle according to the pressurization parameter of the brake. The application realizes the elimination of the creep noise of the vehicle.

The application discloses a master cylinder pressure estimation method and system based on wheel states, which is applied to an electronic stability control system and comprises the following steps: detecting the effectiveness of a master cylinder pressure sensor signal; if the master cylinder pressure sensor signal is effective, using the collected value of the master cylinder pressure sensor as a current master cylinder pressure estimation value; if the master cylinder pressure sensor signal is ineffective, judging whether antilock braking control is triggered; if the antilock braking control is not triggered, estimating the master cylinder pressure based on the whole vehicle deceleration; if the antilock braking control is triggered, judging whether the current is in the first antilock braking control cycle; if the current is in the first antilock braking control cycle, estimating the master cylinder pressure based on the maximum wheel deceleration of the current cycle; if the current is not in the first antilock braking control cycle, judging the wheel braking state based on at least one wheel state parameter of the current cycle, correcting the master cylinder pressure estimation value according to the judgment result, using the corrected master cylinder pressure estimation value as the current master cylinder pressure estimation value; and outputting the current master cylinder pressure estimation value for brake control.

The utility model relates to a kind of connecting structure of brake master cylinder body and liquid storage tank, belong to the brake master cylinder of automobile brake system technical field area with liquid storage tank assembly.Liquid storage tank is directly installed on the oil inlet of main cylinder by oil outlet, and the two clamping claws of the bottom of liquid storage tank are respectively connected with the both ends of pin on main cylinder body.Optimal feature is novel structure, cancels fixed screw, pin is directly cast on main cylinder blank, directly connected with liquid storage tank, pin is integrally formed with main cylinder body, can reduce the number of parts, reduce assembly complexity, high connection strength, good connection sealing, enhance anti-vibration capacity, avoid the risk of brake failure caused by screw loosening, can guarantee vehicle safety performance, reduce cost, improve production efficiency.

The utility model discares the technical field of regional vehicle braking, and discloses an unmanned vehicle X type brake pipeline system and unmanned vehicle, and the unmanned vehicle X type brake pipeline system comprises left front wheel brake, right rear wheel brake, brake master cylinder, right front wheel brake, left rear wheel brake, hydraulic controller and brake pipeline. Brake pipeline includes first pipeline and second pipeline, and left front wheel brake is connected with right rear wheel brake through first pipeline, and right front wheel brake is connected with left front wheel brake through second pipeline. Hydraulic controller is connected with brake master cylinder, is used for receiving brake signal and can control first export and second export. The utility model can provide at least 50% brake force for vehicle when one of first pipeline and second pipeline fails, realizes the redundancy of brake system, improves the security of brake system. Moreover, through hydraulic controller, response speed and control precision are improved, and the safety of vehicle driving is ensured.

A braking pressure control method for new energy vehicles based on the Koopman operator includes: establishing the dynamic equilibrium equations and nonlinear model of the braking system; constructing an observation function set, identifying the Koopman operator matrix using an extended dynamic mode decomposition algorithm, constructing a global linear prediction model, and correcting the Koopman operator matrix; constructing an augmented state equation in the discrete-time domain, designing a linear extended state observer based on an improved Kalman filter algorithm, and outputting a lumped disturbance estimate; injecting the lumped disturbance estimate into the prediction equation of the linear model predictive control, and obtaining the optimal control sequence by solving the objective function of a quadratic programming problem; converting the first control increment of the optimal control sequence into a motor drive signal, which is applied to the master cylinder motor of the electro-hydraulic braking system for physical pressure build-up. This invention can solve the problems of low hydraulic pressure control accuracy, poor anti-interference ability, and high computational load in existing technologies.

This application provides a braking system and a two-wheeled vehicle, relating to the field of braking system technology. The braking system includes a brake handle, a master cylinder, hydraulic lines, and a brake caliper. The master cylinder includes an input end and an output end. The brake handle is connected to the input end, and the output end is connected to the brake caliper via the hydraulic lines. The master cylinder includes: a main cylinder housing with a first cavity extending from the input end towards the output end; a first piston and a second piston, slidably disposed within the first cavity along the extension direction of the first cavity, and the second piston being throttle-connected to the brake handle; a first elastic member disposed within the first cavity, with its two ends acting on the first piston and the master cylinder housing, respectively; and a second elastic member disposed between the first and second pistons; the stiffness of the second elastic member is greater than that of the first elastic member. The braking system provided in this application provides a linear braking feel, which can improve the driver's handling and enhance safety.

This invention relates to an adaptive V-type positioner for a machining center fixture used in the machining of automotive brake master cylinder blocks, belonging to the category of machining center fixture accessories. The front V-type positioning assembly is fixedly connected to the front of the base, and the rear V-type positioning assembly is fixedly connected to the rear of the base. An axial positioning device is located in the middle of the front and rear V-type positioning assemblies and is fixedly connected to the base. Advantages include a novel structure, manual adjustment function that significantly shortens fixture changeover time, thereby improving the overall efficiency of the production line. It is particularly suitable for enterprises with multi-variety, small-batch production models, offering high positioning accuracy and stability, effectively reducing scrap rates caused by positioning errors, and thus lowering production costs. The versatility design reduces the types of fixtures and inventory requirements, saving enterprises equipment investment and management costs.