338 results about "Brake fluid" patented technology

The application discloses a damping-adjustable hydraulic bushing and a control method thereof. The damping-adjustable hydraulic bushing is composed of a hydraulic bushing body and a solenoid valve. The hydraulic bushing body comprises a bushing support, a main spring rubber, a cast aluminum inner tube, an aluminum outer tube and a cage-shaped framework. The cast aluminum inner tube, the main spring rubber and the aluminum outer tube are coaxially arranged from inside to outside. The cage-shaped framework is arranged in the main spring rubber and used for supporting the main spring rubber. Two flow channel plates are assembled between the aluminum outer tube and the main spring rubber, so that a brake liquid chamber and an acceleration liquid chamber are formed between the main spring rubber and the flow channel plates respectively. A brake flow channel on the brake side flow channel plate cooperates with an acceleration flow channel on the acceleration side flow channel plate to form a passage. A connecting bridge is arranged on the cage-shaped framework. The solenoid valve is connected to the connecting bridge through bolts. An axial actuating hole is arranged on the cage-shaped framework. An actuating rod is arranged in the axial actuating hole and controlled by the solenoid valve.

The application discloses a brake fluid filling and exhaust device and a control method and system thereof. The device comprises a liquid supplement tank, a liquid supplement pipeline, a liquid return pipeline, a first valve and a second valve. The liquid supplement tank is internally provided with a filter, the top of the tank body is provided with an exhaust port, one side of the tank body is connected with the liquid supplement pipeline, the liquid supplement pipeline is provided with the first valve, the other side of the tank body is connected with the liquid return pipeline, and the liquid return pipeline is provided with the second valve. When brake fluid is filled, the liquid supplement tank, the liquid supplement pipeline, a liquid storage pot, brake calipers and the liquid return pipeline are communicated to form a circulating passage of brake fluid, and when a stop-filling condition is met, the liquid storage pot stops filling brake fluid to the brake calipers, and the stop-filling condition at least comprises that gas in the brake system is exhausted. Through the technical scheme provided by the application, gas in brake fluid can be filtered, separated and exhausted from the exhaust port in the brake fluid circulation process, automatic filling and exhaust of brake fluid are realized, and the filling and exhaust efficiency of brake fluid is improved.

A valve unit for an anti-lock braking system has a valve body, a piston, and an elastic element acting on the piston. The valve body has an outlet port, an inlet port, a primary chamber communicating with the outlet port, an expansion chamber with an outflow passage establishing fluid communication between the primary chamber and the expansion chamber, and a bypass passage between the inlet port and the outlet port. The piston is movable in the primary chamber and has a longitudinal through cavity, a first transversal surface facing the outlet port, and a second transversal surface facing away from the outlet port. The first transversal surface has an area smaller than the area of the second transversal surface. The elastic element exerts an elastic force to move the piston away from the outlet port. The valve unit is activatable by pressure of a brake fluid in the primary chamber.

This utility model belongs to the technical field of new energy vehicle braking system plugs, specifically relating to a novel braking system plug for new energy vehicles. It includes: a frame for connecting to a valve body within an integrated braking system, and an elastic layer sleeved and fixed on the frame to cooperate with a valve block within the valve body to block or allow the flow of brake fluid. This utility model achieves an integrated design between the frame and the valve body of the solenoid valve in the One-box braking system through pressing the frame against the valve body end face, meeting the high integration requirements of the One-box braking system. Furthermore, the various grooves, protrusions, blocks, and engaging parts provided between the frame and the vulcanized surface of the elastic layer not only increase the vulcanization area between the frame and the elastic layer, enhancing adhesion strength, but also further improve the radial and axial connection force between the frame and the elastic layer, thereby improving the overall service life and quality of the plug.

A mine dump truck wet disc brake hydraulic system, including main control valve, one end of main control valve is connected pressure oil source, the other end is connected front brake system and middle and rear brake system, front brake system includes brake pedal, front axle proportional control valve group, front axle brake valve group and front brake cylinder, middle and rear brake system includes brake pedal, slow running valve, middle and rear axle brake valve, rear axle proportional valve group, relay valve group, rear axle brake cylinder and middle axle brake cylinder, the utility model discloses a mine dump truck wet disc brake hydraulic system can realize manual operation brake and line control remote brake function, reaches unmanned operation's requirement, is used for unmanned vehicle or auxiliary driving, and in order to adapt to the distance of middle and rear axle of three axle vehicle and the distance of main brake valve group is longer, two relay valve groups are added, brake corresponding speed is improved, faster brake response is realized, makes travel more safe.

A saddle-type vehicle includes: a hydraulic unit configured to receive an operating force and adjust a brake fluid pressure; a heat exchanger configured to dissipate heat of cooling water or engine oil to the outside; and a vehicle body frame configured to support the hydraulic unit and the heat exchanger. The hydraulic unit is located above the heat exchanger, and at least a part of the hydraulic unit overlaps with the heat exchanger in a top view.

The invention belongs to the technical field of engineering machinery, and discloses a brake hydraulic system and engineering machinery. According to the brake hydraulic system, service braking is adopted, reliable braking force can be provided, the two service brake valves and the electric proportional brake valve are connected in parallel, the path with the largest oil pressure is supplied to the service brake oil cylinder after judgment is conducted through the first shuttle valve and the second shuttle valve, and the service brake oil cylinder is connected with the electric proportional brake valve. Automatic signals and active operation of a driver can be perfectly coordinated, conflicts are avoided, and the system is simple and high in reliability.

To provide a hydraulic control unit for a saddle-riding type vehicle, which includes a pump for moving a brake fluid and a holder for holding a filter through which the brake fluid passes in the pump, can be miniaturized, and can prevent the holder from not being provided in a prescribed posture.SOLUTION: The hydraulic pressure control unit includes a base body in which an internal flow path that allows a wheel cylinder and a master cylinder to communicate with each other is formed, and a pump that moves a brake fluid in the internal flow path, wherein the base body includes a recessed portion in which the pump is provided, the pump includes a cylinder in which a compression chamber that compresses the brake fluid is formed, a piston portion whose input-side end portion is pressed by a motor and whose partition-side end portion is inserted into the compression chamber to partition the compression chamber, and a holder that holds a filter through which the brake fluid flowing into the inflow flow path passes, and the holder includes an abutting portion whose base end portion is connected to the cylinder and that abuts on a wall surface of the recessed portion.SELECTED DRAWING: Figure 3

The utility model relates to the technical field of pipeline valves, in particular to a device for controlling slow closing of a check valve, the check valve and a brake, a shell of the brake can axially rotate on a base of the brake, and the brake drives a brake assembly through an internal brake piston to generate friction braking with the shell of the brake; a piston rod of the double-acting piston cylinder is fixedly connected with a shell of the brake through the overturning assembly. The brake fluid storage tank is in one-way communication with a fluid inlet cavity of the double-acting piston cylinder and the brake piston through a first pipeline, the brake fluid storage tank is in two-way communication with the fluid inlet cavity of the double-acting piston cylinder and the brake piston through a second pipeline, and a control valve is arranged on the second pipeline. The brake fluid storage tank is bidirectionally communicated with the fluid return cavity through a third pipeline; friction braking is generated through the braking assembly and the brake shell, the slow closing effect of the valve clack is achieved, the slow closing effect is stable, the water hammer effect is remarkably eliminated, and when a water pump is started, the valve clack of the check valve can be easily and normally opened.

The present invention provides a vehicle braking system and a vehicle. The vehicle braking system (1) comprises a brake fluid control assembly (100), connecting oil pipes (300), and a brake master cylinder assembly (200). The brake fluid control assembly comprises an oil circuit block (110) and a pressure booster (120). The pressure booster is mounted on the oil circuit block. Oil circuit block ports (111) are provided on the side of the oil circuit block, and one end of each connecting oil pipe is connected to an oil circuit block port, and the brake master cylinder assembly and the brake fluid control assembly are arranged separately. Assembly ports (210) are provided on the outer circumferential surface of the brake master cylinder assembly, and the other end of each connecting oil pipe is connected to an assembly port. The brake master cylinder assembly communicates with the brake fluid control assembly by connecting oil pipes, and both the brake master cylinder assembly and the pressure booster can be driven to output brake fluid from the oil circuit block.

The application relates to the field of engineering machinery and discloses a crane power system, a control method and a tire crane. The crane power system comprises a superstructure hydraulic system and a brake hydraulic system, and further comprises an engine, a gearbox, a main oil pump, a power take-off device, a power take-off cylinder and an oil cylinder control system. The gearbox is connected with the engine. The main oil pump is used for pumping hydraulic oil of a hydraulic oil source to the superstructure hydraulic system. The power take-off device is connected with the gearbox and the main oil pump. The power take-off device can be switched between a disconnected state and a connected state under the drive of the power take-off cylinder. The oil cylinder control system comprises an oil inlet oil circuit. An oil outlet end of the oil inlet oil circuit is connected with the power take-off cylinder. The oil inlet end is connected with the brake hydraulic system. The application effectively reduces the fuel consumption of the crane during driving, improves the driving capacity of the crane and the service life of the main oil pump, and avoids the problem that the engine is difficult to start when the ambient temperature is relatively low.

The invention relates to a method for detecting a leak in a power brake system (10) of a motor veihcle. In order to generate a brake pressure (pB), the power brake system (10) comprises a power brake cylinder (66) with a brake piston (74). The method comprises the step of continuously determining (A) a volume-pressure value (p(V)) on the basis of a measured brake pressure (pB) and a brake fluid volume (VFZ) which is displaced from the power brake cylinder (66), during a braking operation (Br). In the event that the volume-pressure value (p(V)) exceeds a specified volume-pressure limit value (pG(V)), the following steps are carried out: summing (B) a tolerated and time- and pressure-dependent brake fluid loss (VB) from the start of the braking operation (Br) until a first refilling process (N1) of the power brake cylinder (66) and before at least one further refilling process (Nn); determining (C) a brake fluid volume (ΔVN) received during each refilling process (N1, Nn); reducing (D) the brake fluid loss (VB) by the brake fluid volume (ΔVN) received during the refilling process (N1, Nn); and determining (E) an error if the brake fluid loss (VB) calculated in this way lies below a volume limit value (VG) before a refilling process (N1, Nn).

1. The name of the design product: packaging bottle (AA-13). 2. The use of the design product: used for packing all high-purity oil liquids for cars, including lubricating oil, cooling liquid, brake fluid, gearbox oil, car window cleaning liquid, and car urea liquid. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

A computer-implemented method trains an artificial intelligence model based on neural networks to predict physical features of a brake caliper from a geometric representation, such as a mesh. The method provides for receiving geometric representations of brake calipers, each comprising local regions such as vertices and faces, and local information relating to the geometry. The artificial intelligence model is trained using input data comprising the received local information and output data relating to physical features of the brake caliper, including fields of stresses due to the pressure of brake fluid and the friction force, and the integral of the elastic deformation energy. The system comprises an input interface to access training data and a processor module configured to train the artificial intelligence model. The trained artificial intelligence model predicts physical features of a brake caliper from the geometric representation, providing output data such as stress fields and deformation energy.

The present application belongs to the technical field of vehicle brake control, and particularly relates to a kind of integrated valve groups of vehicle full power hydraulic brake drive-by-wire operation, the brake integrated valve group includes energy accumulator, pressure sensor, pressure tap, proportional pressure reducing valve, overflow valve, check valve, two-position three-way electromagnetic valve and aluminum brake valve body and its P / T / A three oil ports.The beneficial effects of the present application are that compared with the distributed installation of traditional brake system components, the integrated brake valve group is light in weight and compact in structure, a large number of external pipeline connections are saved, the pipeline layout of the brake system is simplified, and the risk of brake fluid leakage is reduced.The integrated valve group can realize drive-by-wire operation brake speed regulation and parking function, has emergency braking function in emergency situations, and can maximize the safety of vehicle driving.

The utility model discloses a kind of loader braking systems, which belongs to the technical field of engineering machinery.It solves the defect that when the whole machine continuously brakes at high frequency, the braking performance of the conventional loader braking system in the prior art is poor and even brake disappears briefly.The main structure includes brake valve, force pump, brake fluid container, switch valve and brake caliper, the brake valve is connected with the signal end of the large cavity of force pump and switch valve respectively, the small cavity of force pump is connected with the piston large cavity of brake caliper through one-way throttle valve, the piston large cavity of brake caliper is also connected with brake fluid container through switch valve, and brake fluid container is also connected with the small cavity of force pump.The utility model is mainly used on engineering machinery such as loader.

The invention discloses a control method and device of a target vehicle, a storage medium and a computer program product, and relates to the field of vehicles, and the control method of the target vehicle comprises the steps that under the condition that it is determined that the target vehicle is in a sliding state, the maximum demand negative torque of the target vehicle is determined according to the driving intention of a target object; according to the required negative torques of the target vehicle at different moments, motor negative torques output by a motor of the target vehicle are adjusted; when it is determined that the difference value between the first motor negative torque output by the motor at the first moment and the maximum motor negative torque of the motor is smaller than a first threshold value, a brake hydraulic starting signal is sent to a brake hydraulic controller at the first moment; and in the first time period, second motor negative torques output by the motor at different moments are adjusted according to the actual hydraulic execution values of the hydraulic negative torques at different moments, so that the absolute value of the difference value between the execution negative torques and the required negative torques of the target vehicle at different moments in the first time period is controlled to be smaller than a second threshold value.

A comfort-enhanced fluid replenishment method, an integrated brake fluid replenishment apparatus, a vehicle, and a storage medium. The method comprises: acquiring the volume consumption of a brake fluid in a servo cylinder (410), so as to determine that there is a fluid replenishment request (S100); on the basis of the speed or deceleration of a vehicle, converting the fluid replenishment request into a comfort-enhanced fluid replenishment request (S200); by means of calculation, obtaining a fluid replenishment target volume and a fluid replenishment target flow rate (S300); and on the basis of the fluid replenishment target volume and the fluid replenishment target flow rate, controlling a fluid replenishment time and a fluid replenishment flow rate, so as to perform comfort-enhanced fluid replenishment on the servo cylinder (410) (S400).

A vehicle includes a system and method of monitoring a condition of brake fluid. The system includes a first sensor configured to measure a fluid level of the brake fluid within a reservoir, a second sensor configured to measure a concentration of the brake fluid, a third sensor configured to measure a temperature of the brake fluid, and a processor. The processor is configured to estimate the condition of the brake fluid from the fluid level, the concentration, and the temperature and send a signal to a display indicating the condition of the brake fluid.

A fluid pressure control unit comprises a base body in which an internal flow channel is formed through which brake fluid flows, a motor which is a drive source of a pump which is provided in the internal flow channel, and a housing which is connected to the base body and covers the motor, wherein the motor has a main body section comprising a stator and a rotor, and an output shaft attached to the rotor, wherein the stator has two magnet sections, and if, when viewed from a direction of view along a center of rotation of the output shaft, a direction along an imaginary straight line passing through the centers of the two magnet sections is defined as the first direction and a direction perpendicular to the first direction is defined as the second direction, the length of the main body section in the second direction is shorter than that in the first direction.

The present invention diagnoses the presence or absence of an abnormality in a sensor for detecting the fluid level position of brake fluid in a reservoir. A brake system 20 comprises: a first flow path group G1 connected to a master cylinder 42; and a second flow path group G2 connected to a wheel cylinder 44. A connection state of the brake system 20 can be switched between a first state in which the first flow path group G1 and the second flow path group G2 are disconnected and a second state in which the first flow path group G1 and the second flow path group G2 are connected. The brake system 20 comprises: a pressure generation unit 66 that controls the pressure of brake fluid in the wheel cylinder 44 in the first state; and a sensor that detects the fluid level position of the brake fluid in a reservoir 43 attached to the master cylinder 42. The control device comprises: a control unit that executes fluid level control to raise the fluid level by using the pressure generation unit 66; and a diagnosis unit that diagnoses the presence or absence of an abnormality in the sensor on the basis of a detection result from the sensor during execution of the fluid level control.

A cable-actuated hydraulic conversion pump, a handlebar, and a two-wheeled vehicle are provided. The cable-actuated hydraulic conversion pump includes a pump body, and the pump body is provided with at least one oil cylinder chamber, at least one oil reservoir chamber, a cable-actuated hydraulic brake component, and an oil pressure balancing component. The oil cylinder chamber is formed on the pump body and is communicated to an oil outlet; the oil reservoir chamber is formed on the pump body and is communicated to the oil cylinder chamber, the oil reservoir chamber and the oil cylinder chamber are filled with brake fluid. The cable-actuated hydraulic conversion pump, the brake cable and the brake hose are reduced from being exposed or even completely hidden inside the handle, combining the advantages of the cable-actuated disc brake and the hydraulic disc brake to achieve a smooth braking effect.

The utility model relates to a brake fluid detection device for the tail end of a vehicle brake system. The brake fluid detection device for the tail end of the vehicle brake system comprises a multi-way pipeline, the multi-way pipeline at least comprises a first connector, a second connector, a third connector and a fourth connector, and the brake fluid detection device comprises an oil drainage pipeline connected to the first connector, a pressure detector connected to the second connector and a vacuum detector connected to the third connector. The oil drainage pipeline comprises a transparent pipe connected to the first connector and an oil drainage bolt connected to the tail end of the transparent pipe, and the first control valve can be operated to be closed so that a negative pressure state communicating with a vehicle braking system can be formed in the brake fluid detection device. And the valve can be operated to be opened to release the negative pressure state. The detection device provided by the utility model can realize comprehensive, real-time and visual detection of the performance of the brake fluid, is compact in structure and simple and convenient to operate, and greatly improves the detection efficiency and accuracy.

A control valve assembly for a hydraulic braking system of a vehicle connected to a trailer has a hydraulic control solenoid valve and a hydraulic control valve, connectable to a pressure source and to a brake fluid reservoir mounted on board the vehicle, and configured to receive a brake fluid from the pressure source, a control line and a supplementary control line that respectively connect the hydraulic control solenoid valve and the hydraulic control valve to at least one trailer brake. A hydraulic emergency solenoid valve on the supplementary control line, interposed between the hydraulic control valve and the at least one trailer brake, is connectable to the brake fluid reservoir so that when activated, a pressure in the supplementary control line is reduced, activating the at least one trailer brake in an emergency braking.

The application discloses a brake fluid storage tank facilitating feeding and discharging, which comprises a tank body, side supports are fixedly installed on the side of the tank body, the tank body is placed on the ground through the side supports, a main shaft is movably connected in the tank body, and the top end of the main shaft extends to the upper side of the tank body after penetrating through the tank body. The application effectively solves the problem that air is easily rolled in and bubbles are generated during the filling of brake fluid due to high-impact in the background art by arranging a rotatable material receiving and flow slowing component. After the material enters the tank body, it is first concentrated and guided to the inclined surface of the umbrella-shaped cover or uniformly dispersed through the flow guide piece, then flows gently along the inclined surface to the inner wall of the tank body, and finally flows down along the inner wall. This process greatly slows down the flow speed and impact force of the material, avoids the violent disturbance of the liquid surface, significantly reduces the generation and mixing of bubbles, guarantees the purity, hydraulic performance and long-term stability of the brake fluid, and improves the product quality and use safety from the root.

A redundancy brake apparatus includes a redundancy hydraulic circuit part connected to a main brake apparatus and a wheel cylinder part of a vehicle to allow brake fluid to flow, and a hydraulic block for auxiliary braking including an oil accommodation part that accommodates the brake fluid and is connected to the redundancy hydraulic circuit part to allow the brake fluid to flow, and an opening formed to allow air to flow into the oil accommodation part.

A stand-alone, auxiliary brake system is provided for operating the rear wheel brake of a motorcycle. The auxiliary brake includes an actuator that is connected to a hand lever by a hose. The actuator is mounted to the rear brake using a fastener. A push rod of the actuator is installed onto the rear brake master cylinder replacing the existing push rod. The push rod is attached to a piston, which is mounted inside a cylinder of the actuator. A transfer port on the actuator connects the hose to the cylinder with the fluid inside the hose being pressurized by the hand lever to push the piston to activate the rear brake through the push rod. Thus, the auxiliary brake system provides an efficient and effective braking mechanism through the user's hand actuation without compromising the existing foot pedal braking system.

An electro-hydraulic hybrid braking system for a vehicle is disclosed. The system includes multiple wheel-end braking modules (1), a hydraulic control module (2), a first electronic control module (3), and a second electronic control module (4). Each of the wheel-end braking modules (1) includes a hydraulic piston (10), a motor (8), and a speed-reducing transmission mechanism (9) configured to convert a rotary motion from the motor (8) into a linear motion for driving the hydraulic piston (10) or brake friction plates (12) to move forwards. The hydraulic piston (10) is movably arranged, and is movable forwards through brake hydraulic pressure. The motor (8) is controlled by the first electronic control module (3) and / or the second electronic control module (4). The electro-hydraulic hybrid braking system for a vehicle is applicable to a vehicle braking system for intelligent driving.

The present invention relates to a control device (10) for at least one hydraulic brake system of a vehicle and a method for determining a dead travel of a master brake cylinder (16) with an upstream actuator (14) of a hydraulic brake system of a vehicle by actuating a motor of the actuator (14) such that at least one piston (24) of the master brake cylinder (16) is moved to at least one intermediate position in which a bore (22) connecting the master brake cylinder (16) to a reservoir (20) is sealed, after deactivating the motor, transferring a volume of brake fluid from at least one partial volume of the hydraulic brake system into the master brake cylinder (16) such that the piston (24) is moved from the intermediate position by means of an applied pressure force at least to a bore release position in which the sealing of the bore (22) ends, and setting an actual value of the dead travel.

The application relates to the field of vehicle electro-hydraulic braking, in particular to a high-precision electro-hydraulic braking system which comprises an oil tank, an energy storage unit, a braking execution end and a hydraulic control unit, the oil tank is used for storing brake fluid; the energy storage unit is used for building pressure for the brake fluid; the braking execution end realizes braking action through brake fluid pressure building and pressure releasing; the hydraulic control unit is used for connecting the energy storage unit and the corresponding braking execution end, the hydraulic control unit comprises a first normally open valve, a second normally open valve and a first normally closed valve, one end of the first normally open valve is connected with the energy storage unit, and the other end is connected with the braking execution end; one end of the second normally open valve is connected with the other end of the first normally open valve; one end of the first normally closed valve is connected with the other end of the second normally open valve, and the other end of the first normally closed valve is connected with the oil tank. The pressure releasing process of the braking execution end can be accurately adjusted, the influence caused by the poor consistency of electromagnetic valves can be effectively offset, the wheel edge pressure releasing error can be controlled in a low range, and the high-precision braking demand can be met.