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 fluid-operated braking system (1) for a tractor-trailer vehicle includes a trailer control valve (2), a parking brake module (3), and an electronic control unit (4) electrically connected to the trailer control valve (2) and to the parking brake module (3). A pressure fluid accumulator (13) of the braking system (1) is connected to a control pressure input (P43) of the trailer control valve (2). A redundancy circuit controls the control pressure input (P43), even during a malfunction of the control unit (4). The parking brake module (3) includes a control valve (14), a redundancy valve (15) and a changeover valve (16) controlled by an electronic switch unit (20) with a holding function. When the control unit (4) malfunctions, the last error-free switching position of the control valve (14) or the redundancy valve is maintained until a operationally safe resting state is reached or the ignition system is switched off.

A vehicle brake system includes a service brake system having a service brake circuit and a trailer brake control system. The trailer brake control system includes a trailer brake valve with a service brake demand input port connected to the service brake circuit and a trailer service brake demand output port connected to a trailer brake control coupling. The output at the trailer brake demand output port is dependent on the pressure applied at the service brake demand input port. An electronic trailer brake control system has a control valve to fluidly connect a source of pressurized fluid with the trailer brake control coupling to trigger actuation of a service brake function on the trailer. The electronic trailer brake control system includes an ECU configured to actuate the control valve to apply service brakes on the trailer if it determines that the vehicle is at risk of jack-knifing.

A brake system damping device includes a first chamber on which hydraulic pressure is to be applied, a second chamber with a compressible medium located therein, and a first separating element configured to separate the first and second chambers. The damping device further includes a third chamber with a compressible medium located therein and a second separating element configured to separate the second and third chambers. The second and third chambers are connected in a medium-conducting manner via a passage in the second separating element. The first separating element is configured to move a closure element to close the passage when the hydraulic pressure in the first chamber has reached a predefined pressure value. The third chamber is formed by the second separating element and a cover. The second separating element is retained on the cover by an interference fit in a fluid-impervious manner.

A military vehicle includes a passenger capsule. The passenger capsule includes a sidewall defining a front door aperture and a rear door aperture, a front door positioned over the front door aperture, a rear door positioned over the rear door aperture, and a latching mechanism configured to secure the front door and the rear door in a closed positioned. The sidewall includes an interlocking door frame portion positioned (i) along an exterior of the sidewall between the front door aperture and the rear door aperture and (ii) proximate the latching mechanism such that the front door and the rear door engage with the interlocking door frame portion positioned along the exterior of the sidewall between the front door aperture and the rear door aperture when the front door and the rear door are closed and engaged with the latching mechanism.

A military vehicle 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 passenger capsule has a frame rail-less monocoque hull structure. The front module includes a front axle, a front differential coupled to the front axle, and a prime mover. The rear module includes a rear axle and a transaxle coupled to the prime mover, the rear axle, and the front differential.

A brake system damping device includes a first space to which hydraulic pressure is to be applied, a second space in which a compressible medium is situated, and a first separation element configured to separate the first space from the second space. The brake system damping device further includes a third space in which a compressible medium is situated and a second separation element configured the second space from the third space. The second space is connected in medium-conducting terms to the third space by a passage configured in the second separation element. The third space and the second separation element having the passage thereof are configured by an integral component.