A method and an apparatus for braking control for autonomous parking are disclosed. According to at least one embodiment, the present disclosure provides an apparatus for controlling braking of a vehicle to cause the vehicle to follow a target route generated in advance, including a biased braking control initiating unit configured to determine whether the target route satisfies a condition for initiating biased braking control, a biased braking amount determining unit configured to determine a ratio of a braking pressure to be applied to respective wheels of the vehicle based on the target route in response to determining that the target route satisfies the condition for initiating the biased braking control, and a control unit configured to perform braking control of the vehicle based on the ratio of the braking pressure.

An apparatus controls release of a parking brake of a parking brake system of an associated vehicle. A processor of an electronic control system of the apparatus executes parking brake control logic stored in a non-transient memory device to selectively generate a parking brake release (PBR) signal based on receiving a set of predetermined PBR interlock override signals in an absence of receiving fully all of a set of predetermined PBR interlock standard satisfaction signals, wherein receiving fully all of the set of predetermined PBR interlock standard satisfaction signals causes the processor executing the parking brake control logic to generate the PBR signal. The sets of predetermined PBR interlock override and interlock standard satisfaction signals are mutually different, and the PBR signal is deliverable for use by the associated vehicle to effect the release of the parking brake of the parking brake system of the associated vehicle.

A pneumatic valve (1) includes a housing (6), a supply connection (8), a working connection (10) for providing working pressure (pB), an exhaust portion (12) for discharging pressurized air, an attachment portion (74), a valve member (24) and a venting guide (4). The venting guide (4) has a venting channel (108) and complementary connection elements (76) engaging the attachment portion (74), a spout (78), and a support projection (100). The support projection (100) is positioned adjacent to a contact region (102) of the housing (6) and configured to abut the contact region (102) to block tilting of the venting guide (4) relative to the housing (6). A vehicle (300) includes a brake system (200) having the pneumatic valve (1).

An air parking brake electric control valve includes an air valve unit and a self-lock unit. The air valve unit includes a main valve body, an auxiliary valve body, a valve core and a first electromagnetic assembly. The valve core is driven by the first electromagnetic assembly to move between a first action position and a second action position. The self-lock unit is disposed on the auxiliary valve body, and includes a second electromagnetic assembly. The second electromagnetic assembly includes a movable column operable to move between a release position and a lock position.

A brake module for a hydraulically braked tractor coupled to a pneumatically braked trailer has a trailer control valve connected via hydraulic control inlet to a hydraulic pressure line leaving a master brake cylinder, and via pneumatic inlet to a compressed air reservoir. Hydraulic control pressure determines pneumatic output pressure level at a trailer control valve pneumatic outlet. The brake module has a break-off prevention module which, if the control line leaks or separates from the trailer control valve relative to the trailer brake system, closes a supply pressure coupling head supply line and causes trailer brake system venting. The break-off prevention module has a pneumatic supply pressure inlet and a pneumatic tear-off control pressure inlet connected to the air reservoir independently of trailer control valve pressure inlets. Supply pressure inlet supply pressure passes through the break-off prevention module and feeds to a trailer control valve pneumatic supply pressure inlet

A parking brake system for electrically controlling a parking brake of a vehicle is provided. The parking brake system includes a parking brake provided for each wheel, an air dryer controller, and an actuator. The air dryer controller is provided to an air dryer to electrically control the parking brake. The air dryer dries compressed air for use in the parking brake. The actuator is provided for each axle of the wheel to actuate the parking brake with the compressed air in accordance with an electric signal from the air dryer controller.

A safety device for vehicles with air brakes that can be attached in conjunction with a parking brake that will provide protection from unintended brake releases due to the parking brake control valve knob being bumped or pushed. The said invented guard can also be locked for security and theft protection.

A method is disclosed for validating operation of a secondary braking system (SBS) of a vehicle having a plurality of brakes, by controlling the SBS and a primary braking system (PBS) of the vehicle. The method may involve using the PBS to generate a first predetermined target braking pressure in the PBS for at least a first one of the brakes, while using the SBS to generate a second predetermined target braking pressure in the SBS for at least a second one of the brakes. Actual and anticipated performance characteristics of a braking component associated with the vehicle are then observed and compared, and from the comparison a determination is made whether the SBS is operating properly.

The invention relates to an emergency braking device comprising an actuator (2), a pressurizing circuit (3) supplying the actuator (2) via a control pressure and a discharge circuit (4), characterized in that the discharge circuit (4) comprises means (13, 14) for controlling the pressure and/or flow rate of the supply fluid of the actuator (2) during a discharge of the actuator, these control means (13, 14) being configured to define an intermediate pressure between a low pressure level and the control pressure of the actuator (2).

A hydraulic brake valve system may comprise a valve housing comprising a brake port, a pressure port, a return port, and a valve actuation end; a valve shaft coupled to the valve actuation end, wherein the valve shaft may be comprised at least partially within the valve housing; and an electric actuator coupled to the valve shaft, wherein the electric actuator may be configured to move the valve shaft between a shaft on position and a shaft off position. The hydraulic brake valve system may be configured to pass hydraulic pressure through at least one of the brake port, the pressure port, or the return port in response to a position of the valve shaft.