A device and related methods for bleeding the brake system of a vehicle without the need for two people to participate in the operation. The device allows a single user to remotely control an adjustable support which extends to fit between the steering wheel and brake pedal of the vehicle, with an actuation system operable to depress and release the brake pedal while the user is positioned at a brake line valve of the vehicle. The device can be used for remotely depressing a brake pedal of a vehicle in order to bleed the hydraulic brake system, check the brake light function, flushing the brake fluid, or air brake diagnoses to check for air leaks and function.

An installation structure of a pedal stroke sensor of an integrated dynamic brake (IDB) system is disclosed. The IDB system includes a hydraulic block, a hydraulic pressure generator, and an electronic control unit (ECU). The hydraulic block includes not only a master cylinder connected to a brake pedal but also a plurality of passages and valves needed to adjust a brake hydraulic pressure. The hydraulic pressure generator includes a motor that is connected to the hydraulic block and operates by an output signal of a detection sensor for sensing displacement of the brake pedal, thereby generating brake hydraulic pressure. The ECU controls the motor and the valves based on pressure information and pedal displacement information. The installation structure of the pedal stroke sensor includes a magnet installed in a piston that slidably moves within the master cylinder by interacting with the brake pedal. The detection sensor includes a first sensor and a second sensor that are spaced apart from each other by a predetermined distance in a movement direction of the piston in a manner that the first and second sensors detect a magnetic flux density of the magnet in response to movement of the piston.

A method is for operating a vehicle's electropneumatic brake system. The brake system includes a service brake system and a parking brake system. The parking brake system includes a spring brake cylinder. A control signal for maintaining a spring brake pressurization pressure, which pressurizes the spring brake cylinder, is provided via a control unit. The provision of the control signal is suspended in at least one of a fault event and/or in the event of an electrical failure and/or in a diagnostic event of the control unit and thus automatically ending the maintenance of the spring brake pressurization pressure to ventilate the spring brake cylinder and thus initiating a spring brake failsafe braking operation of the vehicle via the parking brake system. The ventilation of the spring brake pressurization pressure is performed by a service brake ventilation function of the service brake system.

A field agricultural machinery test platform, comprising a field soil groove, traveling guide rails, traveling trolleys, a hitch trolley, a hitch device mechanism, and a test system. The two guide rails are provided on both sides of the field soil groove in parallel, and the traveling trolleys are located on the guide rails; a cross beam is provided between the two guide rails, and the two ends of the cross beam are respectively connected to the traveling trolleys; the hitch trolley is provided on the cross beam, and a hitch device is provided on the hitch trolley; the test system is provided on the hitch trolley and the hitch device; a test machine is connected to the hitch device; the test system comprises an image assembly, a force test assembly, and a control assembly which are mounted on the hitch trolley.

Systems and methods for coordinating and providing braking assistance between towing vehicles and towed vehicles during towing events, such as bidirectional charging towing events, are provided. The towing braking assistance may be provided by the towed vehicle in the form of an assistive braking torque output to assist the towing vehicle with meeting a target deceleration rate during the towing event. The assistive braking torque output may be provided to account for mutual vehicle deceleration events, brake compensation or brake fade events, and stability events of the coupled vehicles during the towing events, for example.

A pre-filling device for a braking system. The pre-filling device includes a pre-filling channel, a pre-filling pressure being inside the channel when the braking system is in a rest and hydro-boost position, and a mechanical valve configured to be opened following a transition from the rest and hydro-boost position to a working position of the braking system; and a hydraulic valve cooperating with the mechanical valve setting the pre-filling pressure inside the channel. The hydraulic valve includes in a first area, facing the mechanical valve, a hole communicating with the channel, and in a second area, hydraulically isolated from the first area, a preloaded resilient element in a chamber held at atmospheric pressure. The hydraulic valve is configured to be connected or not to be connected, by a reciprocating movement inside the channel, to a hydro-booster device and to keep a predetermined pre-filling pressure upon varying of the hydro-boost pressure.

Disclosed are a brake pedal assembly, a braking apparatus, and a control method, where the brake pedal assembly includes a pedal, a stroke sensor configured to detect a depression stroke of the pedal, Hall sensors spaced apart from each other in a direction parallel to an operation direction of the pedal, and a controller configured to determine the depression stroke of the pedal using any one or any combination of the stroke sensor and the Hall sensors and to determine a required braking force of a vehicle, in response to the depression stroke of the pedal.

A brake system for a vehicle having at least two axles. The brake system includes a first axle unit which can be mounted or is mounted on a first axle of the vehicle and has a motorized brake pressure build-up device, a first wheel brake cylinder and a second wheel brake cylinder, and a second axle unit which can be mounted or is mounted on a second axle of the vehicle and is formed separately hydraulically from the first axle unit. The first axle unit includes a first outlet valve assigned to the first wheel brake cylinder and a second outlet valve assigned to the second wheel brake cylinder. The brake fluid can be let out of the first wheel brake cylinder via the first outlet valve and out of the second wheel brake cylinder via the second outlet valve into the connected brake fluid reservoir.

A brake force sensor arrangement for a brake unit includes a brake unit including a brake force application member; and a strain gage positioned on the brake force application member. The strain gage may be configured to measure the stress, strain, or stress and strain of the brake force application member. The stress, strain, or stress and strain of the brake force application member may be proportional to the brake force applied by the brake unit.

A brake line bleeding device including a main body with a cylinder and an extending stem. The cylinder is supported at a fixed location within the vehicle, such as upon the steering wheel. The stem is secured, at an end opposite the cylinder, to the brake pedal. A pressurized conduit extends from a source and is communicated to an input of a powered manifold mounted to the cylinder. A two position valve is integrated into the powered manifold and, upon receipt of an input signal, is actuated by a control mechanism within the manifold to switch between first and second outlet conduits extending from the manifold and in order to communicate the pressurized source to respective forward and rearward locations of the cylinder. In this fashion, pressurized fluid or airflow is alternatively communicated to opposite ends of the cylinder in order to reciprocally drive the stem in a bi-linear fashion relative to the housing, such as in order to successively pump the brake in a brake fluid servicing or bleeding operation.