403results about "Application and release valves" patented technology

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.

A 3-way solenoid valve, a vehicle brake system including the 3-way solenoid valve, and a controlling method for the same are disclosed. The present disclosure in at least one embodiment provides a brake system for a vehicle, including one or more wheel cylinders configured to apply braking pressure to each of wheels of a vehicle by using hydraulic pressure, one or more of the 3-way solenoid valve configured to increase or decrease the hydraulic pressure supplied to the one or more wheel cylinders, and a braking device configured to supply the hydraulic pressure to the one or more wheel cylinders by using a stepping force applied to a brake pedal or driving of a hydraulic pump.

The present disclosure provides an emergency valve, including: a valve body (10) comprising an emergency cavity (11), a pressure increasing cavity (12) and an inflation cavity (13) which are spaced apart from one another, wherein an extension direction of the pressure increasing cavity (12) is the same as an extension direction of the inflation cavity (13); an air inlet of the emergency cavity (11) is in communication with a train pipe (71); the pressure increasing cavity (12) is provided with a first communication port, a second communication port and a relief port; the relief port of the pressure increasing cavity (12) is located between the first communication port of the pressure increasing cavity (12) and the second communication port of the pressure increasing cavity (12); the first communication port of the pressure increasing cavity (12) is in communication with a brake cylinder (72); and the second communication port of the pressure increasing cavity (12) is in communication with the emergency cavity (11). The device increases the inflation speed of the train pipe, and achieves the aim of saving energy by utilizing the pressurized air in the brake cylinder.

The disclosure relates to a method for operating an electropneumatic parking brake module for an electronically controllable pneumatic brake system for a vehicle, in particular a commercial vehicle, having a supply port for receiving a supply pressure, at least one parking brake port for the connection of at least one parking brake cylinder, a main valve assembly which receives the supply pressure and is configured to output a spring brake pressure at the parking brake port in dependence on a control pressure, and a pilot valve assembly which receives the supply pressure and is to provide the control pressure, wherein the pilot valve assembly has a bistable valve which can be switched between a first air admission position and a second air release position, and a control unit for providing first and second switch signals to the pilot valve assembly.

A fail-safety valve unit is for a failure braking function of a pneumatic braking system for a vehicle. The fail-safety valve unit has a first and a second failure brake valve configured as monostable valves, and a main line which pneumatically connects a main port, which provides a first pressure, and a failure port. The first and second failure brake valves are connected pneumatically in series in the main line. The first and the second failure brake valves are controllable by different control units. The failure brake valves are open in an open position when not actuated such that the first pressure prevailing at the main port is provided as a failure brake pressure at the failure port such that, in a fault situation, in an electrical failure, and / or in a diagnostic situation, a failure braking operation is triggered via provision of the failure brake pressure at the failure port.

An electromagnetic-actuator (EA) including a coil-element (CE) having a coil-core (CC) / coil arranged about the CC-circumference. The CC has a symmetrical first-region (FR) having an axis-of-symmetry (AOS), the CC being surrounded by the coil, and a movable-magnetic-armature-body (MM AB) as a movable-actuator-element (MAE) interacts with the CE to produce an AB activation-movement, and is supported in the actuator by a bearing-device (BD) and movable from a first / second-position by activating the CE. The BD is radially-offset to the CC AOS, and the AB extends from the BD radially over the CC from a first / second-side of the CC, which has a second-region (SR) extending radially beyond the FR and is on second-side (SS) of the CC between the coil / AB in the direction of AOS such that an air-gap between CC / AB in direction of the AOS is smaller on the SS of the CC than on first-side when the AB is in first-position.

An electro-pneumatic central pressure control module, having at least two channels, implemented as a structural unit for an electro-pneumatic service brake of a vehicle, having at least two pressure control channels which are electrically controllable with regard to a brake pressure. A central electronic brake control device has a board, carrying electrical and electronic components, in which routines at least for controlling the brake pressure and for controlling the driving dynamics are implemented in the electrical and electronic components. At least one inertial sensor is arranged on or at the at least one board and is electrically conductively connected to at least several of the electrical and electronic components on the board so that the output signals of the at least one inertial sensor are integrated into the at least several electrical and electronic components for carrying out the control of the driving dynamics.

The utility model relates to a hydraulic hand brake valve which comprises the following components: a valve body which comprises an oil inlet, an oil return port and an oil outlet; the valve element is provided with an oil way groove, and the oil way groove is connected with the oil return opening and the oil inlet; the balance spring is used for adjusting movement of the valve element and keeping the pressure of the oil outlet; when the valve element descends, the oil inlet and the oil return opening are disconnected, and the pressure of the oil outlet is increased. And when the pressure of the oil outlet and the compression amount of the balance spring are in a balanced state, the parking braking force required by the target vehicle is achieved. According to the hydraulic hand brake valve, the oil inlet, the oil return port and the oil outlet are formed, the balance spring is introduced, the internal structure of the hydraulic hand brake valve is simplified, the number of parts is reduced, meanwhile, the overall dimension is effectively controlled, the production cost of the hydraulic hand brake valve is reduced, and the assembly efficiency of the hydraulic hand brake valve is improved. And meanwhile, the hydraulic hand brake valve can be more suitable for the spatial layout requirement of the light truck.

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.

To provide a braking system that reduces cost and structural volume, and improves safety and / or the probability of failure caused by malfunction. [Solution] The master cylinder, which is actuated by an actuator in the form of a brake pedal (1), is provided with only one actuation chamber (110), which can be hydraulically connected to the brake circuit lines (HL4, HL5) of the brake circuit (BK1, BK2) directly via a hydraulic line (HL3) or via circuit isolation valves (BP1, BP2), and a switching valve is used to selectively close or open the hydraulic line (HL3), which is particularly open when de-energized.

A brake system for a transportation vehicle having a brake device for braking a wheel of the transportation vehicle, an actuator device for targetedly actuating the brake device, a control device for controlling the actuator device, and an emergency brake device for braking the wheel in response to a malfunction of the transportation vehicle. The emergency brake device has an energy store for storing energy for actuating the brake device and a triggering device for releasing the stored energy in the energy store to actuate the brake device, the triggering device releases the energy store in response to a failure of an on-board electrical system of the transportation vehicle. Also disclosed is a method for operating a brake system and to a transportation vehicle having such a brake system.

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 discloses a railway vehicle braking system and a railway vehicle. A main pipe of the railway vehicle braking system is provided with a rescue entrance; the main pipe is communicated with an input port of the pressure valve; an output port of the pressure valve is communicated with an input port of the brake; the main pipe is communicated with an input port of the pedal valve, an output port of the pedal valve is communicated with an input port of the switch valve, and the output port of the switch valve and the rescue pressure regulating pipe can selectively convey fluid to a pressure regulating port of the pressure valve to regulate the pressure of the fluid flowing from the input port of the pressure valve to the output port of the pressure valve. The railway vehicle can be normally braked, and the braking force for normally braking the railway vehicle can be synchronously adjusted; rescue braking can be carried out on the railway vehicle, and the braking force for rescue braking of the railway vehicle can be synchronously adjusted; even if the pedal valve of the rail vehicle is operated by mistake, the rescue vehicle is not influenced to control the rail vehicle to carry out rescue driving or rescue braking.

The invention provides a braking control method and device, electronic equipment and a storage medium, and relates to the technical field of vehicle braking. The brake control method comprises the steps that when a brake signal is detected, a target brake pressure curve is generated, and the target brake pressure curve comprises brake pressure curves corresponding to a pressure building stage, a pressure maintaining stage and a pressure releasing stage respectively; and the front wheel brake pressure of the vehicle is controlled according to the target brake pressure curve. According to the method, the pedal operation rule that an experienced driver quickly treads and raises and lifts in the braking process can be converted into an objective control model which can be stably executed by an electronic control system, a basis is provided for subsequent refinement and self-adaptive control, and therefore conditions are created for improvement of braking comfort on the premise of not depending on additional hardware.

The invention provides a pneumatic valve device, a pneumatic brake system and a commercial vehicle. The pneumatic valve device comprises a first air pressure port used for receiving air source pressure of a lower pressure value; the second air pressure port is used for transmitting trailer braking pressure; the third air pressure port is used for outputting trailer brake control air pressure; the first air pressure port is connected with the third air pressure port through a working cavity of the relay valve; the fourth air pressure port is used for receiving the air source pressure with the higher pressure value; the control end of the energy supply valve is connected with the first air pressure port, an air inlet of the energy supply valve is connected with the fourth air pressure port, an air outlet of the energy supply valve is connected with the second air pressure port, the energy supply valve is constructed to make the air inlet and the air outlet communicated when the pressure of the control end of the energy supply valve is larger than an opening threshold value, and the opening threshold value is smaller than the first pressure value. The air source pressure with the higher pressure value can be introduced into the trailer braking system, the energy storage capacity of the trailer braking system is improved, the trailer braking response time can be shortened, and the whole vehicle braking efficiency is improved.

The invention discloses a parking braking mechanism of an electronic mechanical braking system. The parking braking mechanism comprises a valve block (1), a flange plate (2), a speed reducing mechanism module (3), a hydraulic cylinder body module (4), a simulator cylinder body (5), an ECU controller (6), a driving motor module (7) and a liquid storage tank (8). According to the parking braking mechanism of the electronic mechanical braking system, modular design is adopted, the machining difficulty of a single assembly is greatly reduced, the process assemblability is optimized, the assembly flexibility of a production line is improved, and the assembly process is simpler and more reliable.

The electromagnetic actuator (105) includes a coil element (110) having at least one coil core (135) and a coil (140) arranged circumferentially around the coil core (135), the coil core (135) having a rotationally symmetric first region (136) with an axis of symmetry (137), the first region (136) in which the coil core (135) is surrounded by the coil (140) in the circumferential direction, and an armature body (115) that cooperates with the coil element (110) for movement to actuate the armature body (115) and is actuated by a bearing device (106) on one side. and a movable magnetic armature body (115) as a movable actuator element supported on the motor (105) and movable from a first position (147) to a second position (149) by actuating the coil element (110), the support device (106) being arranged radially displaced with respect to a symmetry axis (137) of the coil core (135), the armature body (115) extending radially from the support device (106) through the coil core (135) from a first side (131) to a second side (132) of the coil core (135). The coil core (135) has a second region (138) that extends radially beyond the first region (136) and is disposed between the coil (140) and the armature body (115) in the direction of the axis of symmetry (137) on a second side (132) of the coil core (135), such that at a first position (147) of the armature body (115), a gap (190) between the coil core (135) and the armature body (115) in the direction of the axis of symmetry (137) is smaller on the second side (132) of the coil core than on the first side (131).

A parking valve assembly (1) for a pneumatic brake system (50) is disclosed. The parking valve assembly (1) comprises: - a valve assembly supply port (2) configured to receive a pneumatic supply pressure; - at least one valve assembly output port (3) configured to output a pneumatic output pressure; - a first valve assembly control port (4) configured to receive a first pneumatic control pressure; and - a pressure-controlled valve (6), wherein the pressure-controlled valve (6) is configured to connect the valve assembly supply port (2) to the at least one valve assembly output port (3), according to the first control pressure supplied to the first valve assembly control port (4). Further, a brake system with said parking assembly and a trailer are disclosed.

The utility model discloses a braking system and a vehicle with the same, and relates to the field of vehicle engineering. The braking system comprises a valve body, the valve body is provided with an oil passing channel, one end of the oil passing channel is an assembling opening, and the inner circumferential face of the oil passing channel comprises a step face facing the assembling opening; the liquid storage tank is provided with an oil outlet connector, and the oil outlet connector is located in the assembly opening; the filtering piece is located in the oil passing channel and arranged between the step face and the oil outlet connector, the filtering piece comprises a retaining ring, the retaining ring is annular, and the outer circumferential face of the retaining ring makes contact with the inner circumferential face of the oil passing channel for sealing; the filter screen is arranged on the retaining ring; the first supporting column is connected to the side, facing the assembling opening, of the retaining ring so as to abut against the oil outlet connector in the shaking process. The brake system is high in filtering reliability, and the service life of the brake system can be guaranteed.

Emergency braking unit (10) for a vehicle (1) which is arranged in a braking system (20) of the vehicle (1), wherein the braking system comprises: - a fluid line (L), - a pressure source (P) to provide a pressurized fluid for the fluid line (L), - a spring-operated brake (11) which is held in an inactive state by means of pressurized fluid which acts in a fluid chamber (13) against the action of a spring (12) in the spring-operated brake (11), wherein the fluid chamber (13) is in fluid communication with the fluid line (L), - a pressure adjuster (16) which is configured to control the spring-operated brake (11) by controlling the pressure in the fluid line (L) which is in fluid communication with the fluid chamber (13) of the spring-operated brake (11), wherein the emergency brake unit (10) comprises: - a valve (14) which is normally in a first, open state, but which can be brought into a second state to reduce the pressure in the fluid chamber (13) in order to release the spring-operated brake (11) into an active state in which it generates a braking effect on the vehicle (1), wherein the valve (14) is arranged between the spring-operated brake (11) and the pressure adjuster (16) in the fluid line (L) immediately upstream of the spring-operated brake (11) in order to override the pressure adjuster (16).

An electronic substrate device according to an embodiment of the present invention includes: an insulating material having a first outer surface and a second outer surface, the second outer surface facing in a direction different from a vertical upper direction; a first electronic component disposed on the first outer surface and generating heat by being energized; a second electronic component disposed on the second outer surface; a braze; a terminal provided on the first outer surface and joined to the first electronic component; a pad provided on the second outer surface and joined to the second electronic component by the braze; a via that penetrates the insulating material; first wiring that connects the terminal and the via; and second wiring that connects the pad and the via. The electronic substrate device comprises a pattern configured so that the second electronic component is separated from the pad due to the weight of the second electronic component in response to melting of the braze, whereby energization to the first electronic component is stopped.

The invention provides an electronic control shutdown emergency brake valve for an airplane and a control method of the electronic control shutdown emergency brake valve, and belongs to the technical field of aviation. The electronic control shutdown emergency brake valve specifically comprises a stop valve assembly, a servo valve assembly, a shutdown valve assembly, a change-over valve assembly and an electromagnetic retainer which are arranged in an integrated mode, and the servo valve assembly is connected with the stop valve assembly and the change-over valve assembly through pipelines; the shutdown valve assembly is connected with the change-over valve assembly and the electromagnetic retainer through pipelines. And after receiving the stop braking instruction, the electronic control stop emergency brake valve for the airplane outputs stop braking pressure and keeps the braking pressure, and after receiving the stop braking relieving instruction, the electronic control stop emergency brake valve relieves the stop braking pressure. According to the scheme, the integration level is high, the safety and reliability of the airplane in the stopping and braking process are improved, the response speed is high, the control precision is high, and the braking requirements of the airplane in various complex environments can be met.

The invention relates to the technical field of engineering machinery, in particular to an electric control proportional steering brake valve based on hydraulic transmission and a control method, an electric proportional pressure reducing valve is adopted to replace a traditional hydraulic control pilot handle, and the electric proportional pressure reducing valve outputs pilot pressure oil with variable pressure according to an operation instruction to push an active valve element A and an active valve element B to act; the active valve core A pushes the brake valve core to act, and power pressure oil is communicated with the brake to realize braking; the driving valve element B pushes the steering valve element to act, and main power pressure oil is communicated with a steering clutch to achieve steering. Pilot pressure output to a steering and braking unit is accurately controlled through an electric signal, and linear proportional adjustment of pressure and current is achieved. Through the design of double-spring pressure regulation and oil way separation, not only is the fine adjustment smoothness in the low-pressure stage ensured, but also the pressure is quickly increased at a key threshold value to prevent the clutch from slipping, and meanwhile, the damage of high temperature and impurities of a main oil way to a precise control element is effectively isolated, so that the control precision, response stability and reliability of a system are remarkably improved.

The invention relates to the technical field of aircraft anti-skid brake control systems, in particular to a stop valve for a brake system of a high-pressure system aircraft, which comprises a valve casing, a slide valve and an electromagnetic valve assembly are arranged in the valve casing, and the slide valve comprises a valve sleeve and a reset assembly; an end cover is arranged at one end of the valve shell; the valve sleeve is arranged in the valve shell, a valve element is movably arranged in the valve sleeve, an oil inlet cavity is formed between the valve element and the oil inlet, a control cavity hole and an output cavity hole are formed in the valve sleeve, and the control cavity hole is used for being communicated with an output channel of the electromagnetic valve assembly through a control oil way arranged on the valve shell. The output cavity hole is used for supplying oil to a brake servo valve of a brake system through an output oil way arranged on the valve shell when the output cavity hole communicates with the oil inlet cavity, and a second seal and a third seal are arranged on the periphery of the valve sleeve. The reset assembly is arranged between the valve element and the end face of the end cover. The length of the slide valve is reduced, so that the structure is more compact; and the reliability of the stop valve in a high-pressure system airplane brake system is improved.

A (pneumatic) trailer braking system including: a supply line 44; a spring brake (58; fig. 1), a spring brake control valve (10; fig. 1); an immobiliser 80 having a brake release position and an immob

The application discloses a steering brake system and engineering machinery, the steering brake system comprises a gear pump, the oil outlet of the gear pump is connected with the P port of a priority valve, the EF port of the priority valve is combined with a working system, the CF port of the priority valve is connected with the P port of a steering gear and the P port of a signal control valve respectively, the Ls port of the steering gear is connected with the Ls2 port of the signal control valve, the Ls port of the priority valve is connected with the Ls1 port of the signal control valve, the A port of the signal control valve and the P port of a brake valve are connected with an accumulator respectively, the steering gear is used for controlling a steering oil cylinder to realize steering, the signal control valve is used for controlling parking brake, and the brake valve is used for controlling service brake. The application realizes that working, steering and braking share an oil source, the intermittent working characteristics of the brake system are utilized to avoid mutual interference of the working and the steering when they work simultaneously, and steering and braking performances are ensured.

Provided are: a hydraulic control unit that can meet a need for miniaturization and a method for manufacturing such a hydraulic control unit. This hydraulic control unit is for a brake system mounted on a straddle-riding type vehicle, the hydraulic control unit comprising a base in which a brake fluid flow path is formed, a circuit board that controls the driving of a hydraulic regulating valve that opens and closes the flow path, a housing that accommodates the circuit board, and a connecting unit that connects the base and the housing, wherein: the connecting unit comprises a recessed section formed in the base, and a pin held by the housing and having an end press-fitted to the recessed section; a through-hole is formed in the end press-fitted to the recessed part; the outer edge of the through-hole is defined by a first branch section and a second branch section, both ends of which are connected to each other, in the end press-fitted into the recessed section; and a reinforcing member different from the base and the pin abuts and presses at least one among the first branch section and the second branch section.

The present invention obtains a hydraulic control unit for a straddle-type vehicle, the hydraulic control unit which can be mounted in a space where the mounting of a conventional hydraulic control unit would be difficult. This hydraulic control unit is for a brake system mounted in a straddle-type vehicle, the unit comprising: a base body in which a flow path for a brake fluid is formed; a motor that is the driving source of a pump that applies pressure to the brake fluid; a fill valve that opens / closes the flow path; and a release valve that opens / closes the flow path, wherein the fill valve and the release valve are provided to a first side surface that is one side surface of the base body, and the motor is provided to a second side surface that is different from the first side surface and is one of two side surfaces of the base plate which face each other in the alignment direction of the fill valve and the release valve.

The present invention relates to two brake circuits (BK1, BK2) each including brake circuit lines (HL4, HL5) for two axles (VA, HA) and at least one hydraulically operated wheel brake (RB1 to RB4) in each brake circuit (BK1, BK2), wherein each hydraulically operated wheel brake (RB1 to RB4) can be connected to the wheel brake circuits (BK1, BK2) or to the brake circuit lines (HL4, HL5) of the wheel brake circuits (BK1, BK2) via a pair of switching valves (SV), and a pressure (P) can be accumulated in at least one wheel brake (RB1 to RB4) via the pair of switching valves (SV). auf ) and release (P ab ) and pressure is accumulated in both brake circuits (BK1, BK2) via a pressure supply device (DV). auf ) or accumulate (P auf ), at least one circuit isolation valve (BP1, BP2) that is open in a non-energized state in order to selectively cut off or release the hydraulic connection line (VL) connecting the two brake circuits (BK1, BK2), and a pressure release valve (P ab The invention relates to a brake system having at least one outlet valve (ZAV, ZAV1) capable of connecting an accumulator vessel (VB) to at least one brake circuit (BK1, BK2) for selectively closing or releasing the hydraulic lines (HL2, HL3) of the brake circuits (BK1, BK2), in particular a master cylinder (SHZ) operated by an actuator in the form of a brake pedal (1) provided with a single working chamber (110), which can be hydraulically connected to the brake circuit lines (HL4, HL5) of the brake circuits (BK1, BK2) either directly via hydraulic lines (HL2, HL3) or via circuit isolation valves (BP1, BP2), and a switching valve, in particular open in the de-energized state, is used to selectively close or release the hydraulic lines (HL2, HL3).