A switching device for a switchable braking system may have a hydraulic selector valve switchable to a first switching position and a second switching position, a switching actuation device, electrically triggerable, for switching the hydraulic selector valve from the first switching position to the second switching position. The switching device may have at least one of: i) a switching preservation system, which stops the hydraulic selector valve in the second switching position by means of a non-electromagnetic stopping force, chosen from the group consisting of fluid-mechanical forces, elastic forces, mechanical forces, permanent magnetic forces, or ii) an amplification system having, a non-electrical accumulator of potential energy, and a switchable connector to disconnect and connect the potential energy accumulator with the hydraulic selector valve. An actuator applies an actuating force to the switchable connector to connect the potential energy accumulator to the hydraulic selector valve.

A brake system for a vehicle includes a first axle-pressure-modulator (APM) for service-brake-chambers associated with a first vehicle-axle, a second APM for spring-brake-cylinders associated with a second vehicle-axle, wherein the second APM is connected to an electronic-brake-control-unit configured to issue a first electric-control-signal for controlling the first APM and a second electric-control-signal for controlling the second APM, a further electronic-brake-control-unit configured to issue a further first electric-control-signal for controlling the first APM and a further second electric-control-signal for controlling the second APM, an electronic-parking-brake-controller configured to issue a second pneumatic-control-signal for controlling the spring-brake-cylinders, and a pressure-modulator-unit configured to convert a pneumatic signal or an electric signal issued by the electronic-parking-brake-controller into a first pneumatic-control-signal for controlling the first APM.

A brake used by a mine hoist, a car, a high-speed train, etc. Gas springs are used to replace belleville springs, and a positive pressure is also always applied to brake pads to both ensure and increase the brake reliability and a positive pressure per unit area. The brake resolves problems such as deformation of the belleville springs, a serious change in an elastic force, sudden cracking and decompression, inconvenient monitoring, and a manufacturing difficulty. A brake head floating structure is used to reduce a requirement on end face runout of a brake disc. An oil-gas linkage plunger pump is used to replace a hydraulic station, which greatly reduces manufacturing costs, and reduces energy consumption.

A method of detecting a leak in an air trailer brake circuit of a trailer includes providing a controller, a base valve, a first sensor, a second sensor, a leak control valve having a solenoid, a pneumatic fluid supply, a first brake output, and a second brake output. The method further includes supplying a first pressure to an inlet of the base valve and outputting a second pressure from an outlet of the base valve. The first pressure is detected with the first sensor and the second pressure is detected with the second sensor. The method also includes communicating the detected first pressure and the second pressure to the controller, and comparing a difference between first pressure and the second pressure to a threshold. A leak is detected in the air trailer brake circuit if the difference satisfies the threshold.

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 military vehicle includes a passenger capsule, a driver seat, a passenger seat, and a belly deflector. The passenger capsule includes a roof, a floor, and sidewalls that define an interior. The sidewalls include mounting interfaces positioned along bottom edges thereof and extending directly therefrom past the floor. The driver seat and the passenger seat are disposed within the interior of the passenger capsule. The belly deflector is positioned beneath the floor. The belly deflector has lateral ends that are coupled to the mounting interfaces such that the lateral ends of the belly deflector are engaged with the passenger capsule. The belly deflector is spaced from the floor such that the floor is configured as a floating floor. The floor and the belly deflector provide two levels of underbody protection.

A military vehicle includes a chassis, an axle, a suspension system, and a driveline. The chassis includes a passenger capsule, a front module coupled to a front end of the passenger capsule, and a rear module coupled to a rear end of the passenger capsule. The axle is supported by the rear module. The suspension system is positioned between the rear module and the axle. The suspension system includes a first gas spring, a second gas spring, a first damper, and a second damper. The first damper and the second damper are cross-plumbed to provide a fluid body roll control function. The driveline is configured to drive the axle. The driveline includes a component having a housing that functions as a structural component of the rear module. The first gas spring, the second gas spring, the first damper, and the second damper are directly coupled to the housing.

A braking system of a trailer and work machine includes a pressurized fluid supply, a hydraulic base valve fluidly coupled to the supply, and a pneumatic base valve fluidly coupled to the supply. A proportional control valve is also fluidly coupled to the supply, and it includes an outlet disposed in fluid communication with the inlets of the hydraulic base valve and the pneumatic base valve. The system further includes a hydraulic output configured to be fluidly coupled to a hydraulic braking system of a trailer, and a pneumatic output configured to be fluidly coupled to a pneumatic braking system of a trailer. The hydraulic output is fluidly coupled to the outlet of the hydraulic base valve, and the pneumatic output is fluidly coupled to the outlet of the pneumatic base valve.