671results about "Application and release valves" patented technology

The utility model relates to a valve device for a vehicle electronic brake system and the vehicle electronic brake system. The valve device comprises a shell; an actuation assembly having a push rod; a first piston; a first spacer in which a pilot chamber in the housing is in fluid communication with a brake pedal side of a brake circuit of the vehicle electronic brake system; a second spacer having a control chamber in fluid communication with a brake side of the brake circuit and a high pressure chamber in fluid communication with a high pressure source side of the brake circuit; a relay valve comprising a second piston, in an unactivated valve position in which the push rod retracts and the second piston abuts against the second spacer to isolate the high pressure chamber from the control chamber, and in a working valve position in which the actuation assembly extends and urges the first piston through the second spacer to urge the second piston to fluidly communicate the high pressure chamber with the control chamber, high-pressure gas from the high-pressure gas source side enters the brake side through the high-pressure cavity and the control cavity so as to be used for generating brake pressure. According to the valve device and system, the risk that the electromagnetic valve fails is reduced.

A valve assembly for a pneumatic system of a vehicle, in particular a commercial vehicle, including: an outlet valve assembly for venting the pneumatic system, a control device for operating the valve assembly in order to admit and release air to and from a pneumatic actuator, wherein the control device is configured to output, to the outlet valve assembly, a switching signal for switching the outlet valve assembly, and, via the switching signal, the outlet valve assembly can be switched to a noise-reducing first venting mode or a quick-venting second venting mode.

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 power transmission unit of a single-acting plunger type includes a ball screw, a ball nut driven by the ball screw, and a plunger piston coupled to the ball nut. A block housing at least partially encloses the plunger piston and the ball screw. A plunger chamber is at least partially defined by the block housing and a face of the plunger piston. The plunger chamber is selectively pressurized by reciprocal motion of the plunger piston with respect to the block housing driven by longitudinal motion of the ball nut. An electric motor selectively drives the ball screw to responsively reciprocate the plunger piston within the plunger chamber. A motor housing at least partially encloses the ball nut, the electric motor, and the plunger piston. The motor housing includes a block lip which is crimped to the block housing to maintain the motor housing in relation to the block housing.

A redundant parking brake apparatus is provided for a vehicle having components of a parking brake system. The redundant parking brake apparatus comprises a first parking brake controller arranged to (i) monitor a first signal indicative of a request to apply parking brakes of the vehicle, and (ii) provide one or more control signals to be applied to components of the parking brake system to apply the parking brakes in response to receiving the first signal. The redundant parking brake apparatus also comprises a second parking brake controller arranged to (i) initiate a timer counter in response to receiving the first signal, and (ii) provide one or more control signals to be applied to components of the parking brake system to apply the parking brakes when the timer counter has reached a predetermined count.

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 trailer brake control module (300a; 300b; 300c) for a towing vehicle (502) facilitating braking of a towed vehicle or trailer (504) includes a pressure supply port (P11), a trailer control pressure port (P22), a primary control port (P42) for receiving either directly and / or indirectly a control brake pressure for operating the trailer brake control module (300a; 300b; 300c). The primary control port (P42) receives the control brake pressure from a pneumatically operated pressure medium, a pneumatic control pressure line (308.1) provides alternative control brake pressure for operating the trailer brake control module (300a; 300b; 300c), wherein the pneumatic control pressure line (308.1) receives the alternative control brake pressure from an electronically operated pressure medium, and a relay valve (310) is activated using either the control brake pressure received at the primary control port (P42), or the alternative control brake pressure from the pneumatic control pressure line (308.1).

An aircraft system is disclosed including a hydraulic actuator, an inlet line for supplying hydraulic fluid to the hydraulic actuator, an outlet line for removing hydraulic fluid from the hydraulic actuator, a first one-way valve configured to allow fluid flow along the inlet line in a direction toward the hydraulic actuator, and a second one-way valve configured to allow fluid flow along the outlet line in a direction away from the hydraulic actuator.

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.

A check valve is arranged in a flow path through which hydraulic fluid flows. The check valve includes: a cap fixed in the flow path; a plug seated on a seat surface provided in the flow path; a first extension provided in the cap and extending from the cap toward the plug; a second extension provided in the plug, extending from the plug toward the cap, and guided by the first extension; and a spring interposed between the cap and the plug to bias the plug toward the seat surface. The check valve further includes a retainer attached to the cap, extending from the cap toward the plug, and locked to the second extension.

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.

To provide a hydraulic control unit for saddle-riding type vehicle that can suppress reduction in sealability between a base body and a housing.SOLUTION: A hydraulic control unit comprises: a base body in which a brake fluid flow channel is formed; and a housing which accommodates a control board that controls a hydraulic adjustment valve for opening / closing the flow channel and is bonded to the base body with an adhesive. When one of the base body and the housing is a first component and the other is a second component, a bonding area of the first component to the second component is a first bonding area, and a bonding area of the second component to the first component is a second bonding area, the first component includes an interval formation part, which forms an interval between the first bonding area and the second bonding area, in the state before the first component and the second component are fixed.SELECTED DRAWING: Figure 3

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.

The present invention obtains a brake hydraulic pressure control apparatus that is mounted to a straddle-type vehicle and can improve an anti-vibration property when compared to the related art. The brake hydraulic pressure control apparatus according to the present invention includes: a base body formed with a channel for a brake fluid; a control board of a hydraulic pressure control mechanism for the brake fluid provided to the channel; a housing accommodating the control board and connected to the base body; and a connector provided to the housing and electrically connected to the control board, and is mounted to the straddle-type vehicle. The brake hydraulic pressure control apparatus includes a holding section that holds a cable connected to the connector.

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 relates to a hydraulic braking system capable of realizing decompression braking and a tractor, the system comprises a left brake valve, a right brake valve and a decompression valve, and an oil outlet h on the decompression valve can be communicated with an oil inlet g or an oil return port i; the oil inlet g is communicated with one end of an oil inlet pipeline L5, and the oil return port i is communicated with one end of an oil return pipeline L6; the interface b on the left brake valve can be communicated with the interface a or the interface c; the oil outlet h is communicated with the interface c through a pipeline L1, and the interface a is communicated with the oil return pipeline L6 through a pipeline L2; the right brake valve is provided with an interface d, an interface e and an interface f, and the interface e can be communicated with the interface d or the interface f; the interface d is communicated with the pipeline L2 through a pipeline L3, and the interface f is communicated with the pipeline L1 through a pipeline L4. The single-side braking and double-side braking device is simple in structure, reasonable in design, capable of achieving free switching between single-side braking and double-side braking, capable of meeting different braking pressure requirements and convenient to use.

The present invention provides a dual-redundant servo valve and its application, belonging to the field of electro-hydraulic servo control; comprising a housing, two sets of electro-hydraulic servo valves and a hydraulic pressure sensor; the two sets of electro-hydraulic servo valves are connected in parallel and arranged in the housing, respectively defined as a left valve and a right valve; the hydraulic pressure of the left valve is monitored by the hydraulic pressure sensor; the left valve is set as the main valve, and the right valve is set as the backup valve; when the right valve is a hot backup, the two sets of electro-hydraulic servo valves are started at the same time to control the supply pressure, and if one of them fails, the other can independently complete the control target; when the right valve is a cold backup, the backup valve is started only when the main valve fails to complete the control target. The dual-redundant servo valve proposed in the present invention is composed of a pair of twin electro-hydraulic servo valves on a common housing. The reliability model of the left valve and the right valve of the valve system is a parallel relationship. As long as one of the electro-hydraulic servo valves is normal, the dual-redundant servo valve can complete the regulation and control of the output pressure.

The energy-saving controllable automobile electromagnetic valve assembly particularly relates to the technical field of electromagnetic valves and comprises an electromagnetic valve body, the outer wall of the electromagnetic valve body is sleeved with an installation sleeve, the outer side of the installation sleeve is sleeved with a protection sleeve, and a wire arrangement groove is machined in the surface of the outer wall of the installation sleeve. One side of the electromagnetic valve body is connected with a wire harness controlled by electricity, the wire harness is located below the installation sleeve and wound in the wire arranging groove, the top end of the wire harness is fixedly connected with a connector, the connector is located between the protection sleeve and the installation sleeve, and a fixing assembly is fixedly arranged at the rear end of the electromagnetic valve body. A wire harness of the electromagnetic valve body can be conveniently stored through the wire arrangement groove, meanwhile, the installation sleeve can play a role in protecting the connecting position of the wire harness and the electromagnetic valve body and the outer side of the wire harness and the connector, and the connecting position of the wire harness and the electromagnetic valve body is prevented from being damaged due to collision; and the service life of the electromagnetic valve body can be prolonged.

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 control method of a braking system, electronic equipment, a vehicle and a storage medium, and relates to the technical field of vehicles, the control method of the braking system specifically comprises the steps that the target deceleration and the actual deceleration of the vehicle are obtained, and the deceleration deviation between the target deceleration and the actual deceleration is determined; determining a target first control parameter group based on the deceleration deviation, and determining a target hydraulic pressure in combination with the target first control parameter group; the actual hydraulic pressure of the vehicle is obtained, and the hydraulic pressure deviation between the target hydraulic pressure and the actual hydraulic pressure is determined; and a target second control parameter set is determined based on the hydraulic pressure deviation, motor demand current is determined in combination with the target second control parameter set, and a braking system of the vehicle is controlled according to the motor demand current. According to the invention, the control precision of the brake system can be obviously 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).