摘要:
An assistance System for a vehicle for providing an emergency stop assistance function that includes an execution device to execute the emergency stop assistance function using at least one of a plurality of activation stages; a detection device for automatic detection of driver inactivity, in order to activate the emergency stop assistance function using a first stage selection of the activation stages; a triggering device for monitoring an operating element of an electrical parking brake or a parking lock of a transmission of the vehicle, in order to activate the emergency assistance function using a second stage selection of the activation stages, which differs from the first stage selection, in the case of a manual activation of the operating element.
摘要:
This electric brake device includes: a brake rotor, a friction member, a friction member operator, an electric motor, and a controller which controls, by controlling the electric motor, a braking force generated as a result of contact between the friction member and the brake rotor. The electric brake device includes a vehicle speed estimator which estimates the speed of the vehicle having the electric brake device mounted thereon. The controller includes a power limiter which limits the power that drives the electric motor. When an estimated vehicle speed, which is the speed of the vehicle estimated by the vehicle speed estimator, is in a determined low-speed range, the power limiter limits the power in accordance with a condition that has been determined such that the maximum power consumption of the electric brake device decreases in accordance with decrease in the estimated vehicle speed.
摘要:
Disclosed is a rig (1) for testing an automatic underground train (2), including at least two rolling units (8) at a distance from each other, each one provided for rolling at least one wheel (6) of the train (2) thereon, each unit (8) including: a rotary inertial body (28); a motor (26) engaged with the inertial body; and a sensor (51) for the rotational speed of the inertial body; the rig also including a unit (11, 15) for controlling each of the motors (26) so as to permanently eliminate any difference in speed between the rolling units.
摘要:
A combined hydropneumatic brake cylinder/air reservoir device having a hydraulic piston formed on the end of a push rod through which interconnected, different sized, pneumatic pistons operate to transmit the desired brake force. The hydraulic piston operates in a hydraulic cylinder having a slack adjuster piston arranged to supply or reduce the hydraulic fluid in the braking circuit in order to compensate for overtravel and undertravel of the pneumatic piston assembly due to brake shoe wear and brake shoe replacement respectively. The double-acting slack adjuster action results in the stroke of the pneumatic piston assembly being maintained constant to assure continued optimum operating efficiency.
摘要:
A control system operates electro-pneumatic braking apparatus on a vehicle and includes an actuator for producing a signal proportional to desired braking effort from full release mode to a maximum. Sensor apparatus is responsive to a pneumatic parameter of the braking system for producing a signal indicative of the actual brake pressure while summing apparatus is responsive to the actuator apparatus and the sensor apparatus for producing outputs effective to operate the braking apparatus to release, apply, and lap modes in accordance with a selected difference in magnitude between the actuator apparatus and sensor apparatus signals.
摘要:
A fusible plug closed vent line for the ''''Westinghouse Brake System'''' of a railway car and having a pressure differential actuated control valve operatively associated therewith and responsive to a reduction in air pressure downstream from the control valve to shift the latter from a closed position to an open position for free venting of the associated ''''Westinghouse Brake System'''' upon a reduction of air pressure in the vent line downstream from the control valve as would occur when one or more of the fusible plugs closing the vent line downstream from the control valve are melted. The control valve includes an exteriorly disposed actuator that may not only be operated to close the control valve, but also indicates, in a visual manner, when the control valve has been shifted to the open position.
摘要:
A triple valve for fluid operable braking is provided with an additional emergency braking valve portion which has its own pressure responsive member which is responsive to at least a predetermined reduction of brake pipe pressure relative to quick action chamber pressure in a given period of time to open a brake cylinder valve to apply pressure to the brake cylinder from a reservoir and open a vent valve to vent the brake pipe, the vent valve and the brake cylinder valve being arranged in line and having between them an accelerated release valve which on return movement of the pressure responsive member past its initial position, is allowed to open to connect brake cylinder to brake pipe until the latter are within a predetermined pressure of each other.