摘要:
A vehicle includes: a brake pedal to produce vehicle brake pressure; a trailer brake valve to output a variable trailer brake pressure to a trailer brake of a trailer, the trailer brake valve configured to output the variable trailer brake pressure as a function of the vehicle brake pressure; and an electronic control unit operably coupled to the trailer brake valve and configured to: output a first valve signal to the trailer brake valve to output the trailer brake pressure according to a first vehicle brake pressure curve; and output a second valve signal to the trailer brake valve to output the trailer brake pressure according to a second vehicle brake pressure curve responsively to determining a curve adjustment condition exists. The first vehicle brake pressure curve and/or the second vehicle brake pressure curve is not a single straight line curve.
摘要:
Provided is a speed control system, a method for using a speed control system, a use of a speed control system, a roller ski using the speed control system, and a ski pole insert for the speed control system. A speed control system (1) for limiting and/or regulating the speed of a wheeled article (2) is provided, wherein the wheeled article (2) comprises a body (4) and one or more wheels (6), the speed control system (1) adapted to, by actuation of a user actuator (12), actuate one or more brake units (10), and a restriction means (14) to limit the magnitude of a braking force applied to the one or more wheels (6) so as to enable a safe and controlled reduction in speed.
摘要:
A method and system of determining a vehicle's driving characteristics such as the vehicle mass, drag force coefficients and driving surface inclination. The vehicle's mass, drag force coefficients and inclination are determined using signals input from the vehicle's accelerometer.
摘要:
A variable load detection apparatus in which a code generator is provided comprising a sensing plate having a plurality of openings arranged to quantify the sensing plate to provide a plurality of code stages and a plurality of jet sensors adapted to detect different code stages resulting from displacement of the sensing plate incident to varying load conditions. The sensing plate openings are arranged to cause the jet sensors to generate a binary-weighted gray code which is converted by encoder circuitry into standard binary-weighted code form. The encoder outputs are connected to pilot different ones of a plurality of interface valves comprising a power stage for driving a differential diaphragm-type relay valve which may be advantageously utilized to vary the percentage of brake pressure on a rail vehicle as a function of the vehicle load condition.
摘要:
A trailering system of a vehicle includes: a trailer hitch configured to receive a ball, the ball configured to be coupled to trailers for towing; a force sensor configured to measure at least one of: a first force on the trailer hitch in a longitudinal direction of the vehicle; a second force on the trailer hitch in a latitudinal direction of the vehicle; and a third force on the trailer hitch in a vertical direction; and a display module configured to selectively indicate a present condition of a trailer that is coupled to the trailer hitch based on the at least one of the first force, the second force, and the third force.
摘要:
An electrical parking brake system and method for a commercial vehicle includes a valve device, which connects a compressed-air supply with a spring brake cylinder without an intermediate connection of a hand brake valve. The valve device aerates the spring brake cylinder in a first switching state and deaerates the spring brake cylinder in a second switching state. The system further includes a pressure sensor, which measures a pressure on the compressed air supply side, and an electronic control unit for directly or indirectly controlling the valve device, acquiring a signal supplied by the pressure sensor, and acquiring an indicator signal for the presence of an individual in a cab of the vehicle. The valve device can only be transferred to its first switching state by the control unit if the pressure on the compressed air supply side exceeds a pressure threshold value and if the presence of an individual in a cab of the vehicle is indicated.
摘要:
A system and method of controlling an automotive vehicle with a yaw stability control system and a trailer comprises determining a presence of a trailer, changing a side slip angle parameter threshold of the vehicle to a modified side slip parameter in response to the trailer signal, and controlling the yaw stability control system in response to the modified side slip parameter.
摘要:
Sensor-equipped hub units 34a attached to respective drive wheels 34 each have a sensor device comprising a sensor 36 for detecting the ground contact load on the wheel 34. A control unit 31 has a traction controller 32, whereby when the ground contact load value output from one of the ground contact load sensors 36 while the vehicle is traveling straight is outside a predetermined range, the drive wheel 34 is controlled so as to return the ground contact load value to the original value.
摘要:
An empty/load brake control system mountable on a sprung and an unsprung member of a railway car and disposed between the car brake control valve and brake cylinder for adjusting the brake cylinder pressure during a brake application according to the car load condition. Such system includes an empty/load sensor valve device and a sensor arm coupled to a sensor cable whose movement is controlled by a sprung member and a terminal member disposed on an end of sensor cable, in contact with sprung member so that any downward movement of sprung member forces such terminal member in a similar downward direction and similarly pulls on the sensor cable. A piston, under pressure, urges the sensor arm to rotate and retract sensor cable but must overcome resistance of a spring. The system includes a load proportional valve.
摘要:
A rail car load sensor 10 configured for use with a rail car brake controller 12. The rail car load sensor 10 detects and measures the distance between rail car 14 and rail 15 and transmits a distance signal to rail car brake controller 12 for adjusting the braking action of rail car brake controller 12 in accordance with the amount of load or weight in rail car 14.