B60T8/3665

Braking system for a railway vehicle

Disclosed is a railway braking system including a control device having a valve with a body having a cavity and a slide having an internal chamber, supply notches and drainage notches each having an overall passage cross-section for a pressure medium having a shape exhibiting an apex, and being movably mounted in the cavity, between a supply position where the supply notch is opposite a supply groove of the body, and a drainage position where the drainage notch is opposite a drainage groove of the body; the device being configured to allow a substantially stable control configuration, wherein the pressure value of the medium is limited, and wherein the slide is positioned in the cavity such that a control notch of the slide is opposite a control groove of the body while the supply and drainage notches are respectively at a distance from the supply and drainage grooves.

BRAKING SYSTEM FOR A VEHICLE
20230048208 · 2023-02-16 ·

A braking system for a vehicle may include a regulating device disposed between a braking device and a pressure agent source that causes the braking device to move. The regulating device may include a slide having an internal chamber with a supply port, a venting port, and a regulating port opening into the internal chamber and through which a pressure agent from the pressure agent source may flow. The regulating port can be located between the supply port and the venting port. Each of the supply port and the venting port may have a general cross-section for passage of the pressure agent substantially having a shape with at least one apex.

Slow response solenoid hydraulic valve, and associated systems and methods

Hydraulic valves for dampening pressure spikes and associated methods are disclosed herein. In one embodiment, a hydraulic valve for dampening pressure spikes includes: a spool configured to move axially inside the hydraulic valve; and a sleeve configured to at least partially house the spool. A location of the spool with respect to the sleeve may determine a flow of a working fluid through the hydraulic valve. A viscous damper is at least partially housed inside an opening in the spool, and a viscous friction between the viscous damper and the opening in the spool slows a motion of the spool.

BRAKING SYSTEM FOR A RAILWAY VEHICLE
20210070329 · 2021-03-11 ·

Disclosed is a railway braking system including a control device having a valve with a body having a cavity and a slide having an internal chamber, supply notches and drainage notches each having an overall passage cross-section for a pressure medium having a shape exhibiting an apex, and being movably mounted in the cavity, between a supply position where the supply notch is opposite a supply groove of the body, and a drainage position where the drainage notch is opposite a drainage groove of the body; the device being configured to allow a substantially stable control configuration, wherein the pressure value of the medium is limited, and wherein the slide is positioned in the cavity such that a control notch of the slide is opposite a control groove of the body while the supply and drainage notches are respectively at a distance from the supply and drainage grooves.

SLOW RESPONSE SOLENOID HYDRAULIC VALVE, AND ASSOCIATED SYSTEMS AND METHODS

Hydraulic valves for dampening pressure spikes and associated methods are disclosed herein. In one embodiment, a hydraulic valve for dampening pressure spikes includes: a spool configured to move axially inside the hydraulic valve; and a sleeve configured to at least partially house the spool. A location of the spool with respect to the sleeve may determine a flow of a working fluid through the hydraulic valve. A viscous damper is at least partially housed inside an opening in the spool, and a viscous friction between the viscous damper and the opening in the spool slows a motion of the spool.

Hydraulic braking system
10086812 · 2018-10-02 · ·

An external force-supported hydraulic braking system of a wheeled vehicle includes two brake circuits each having a main brake line configured to be connected to a pressure-carrying supply line or to a pressureless return line via a brake valve and further having a number of wheel brake lines branching from the main brake line and including a valve assembly of a TCS system. The valve assembly of the TCS system has a single TCS control valve formed as a 6/2-way magnetic switching valve configured to, in a non-actuated state, block a pressure-carrying main pressure line against two bypass lines each leading directly to a respective main brake line, and connect the two return lines to a pressureless collective line, and further configured to, in the actuated state, connect the main pressure line to the two bypass lines and block the two return lines against the collective line.

HYDRAULIC BRAKING SYSTEM
20180022334 · 2018-01-25 · ·

An external force-supported hydraulic braking system of a wheeled vehicle includes two brake circuits each having a main brake line configured to be connected to a pressure-carrying supply line or to a pressureless return line via a brake valve and further having a number of wheel brake lines branching from the main brake line and including a valve assembly of a TCS system. The valve assembly of the TCS system has a single TCS control valve formed as a 6/2-way magnetic switching valve configured to, in a non-actuated state, block a pressure-carrying main pressure line against two bypass lines each leading directly to a respective main brake line, and connect the two return lines to a pressureless collective line, and further configured to, in the actuated state, connect the main pressure line to the two bypass lines and block the two return lines against the collective line.