摘要:
A device for the surveillance of the pressure of a vehicle tire includes a pressure-sensitive device which senses the tire pressure and generates, in case of a pressure loss in the tire, a pressure change signal. A set member is actuated with this pressure change signal such that the signal member performs a stroke. A sensor tests the position of the set member and recognizes when the tire pressure is too low. A pressure-sensitive device (1) includes a check valve (9, 12), opening toward the pressure discharge port (3). The pressure at the pressure discharge port (3) can be blocked versus the tire pressure based on the check valve (9, 12). The invention device is suitable for furnishing a continuous signal up to the complete emptying of a tire.
摘要:
A load-controlled fluid pressure regulating valve device for tractor-trailer type vehicle brake systems which combines in a single housing a unitary piston valve assemblage capable of performing the functions of a relay valve device and a regulating valve device. The unitary valve assemblage is acted upon under normal circumstances by the brake valve control fluid pressure and is further arranged for direct actuation by an emergency piston in the event of fluid pressure loss in the trailer supply line due to uncoupling or to a broken pipe. The valve assemblage is adjustably positioned in accordance with the vehicle load condition such that the relay valve function reflects the load regulating control valve.
摘要:
The invention relates to an actuating device for pressure medium brake systems for controlling the motor-vehicle brake valve and an electric switching arrangement for continuously switching on the individual braking steps of a third brake system.
摘要:
A vehicle load-controlled brake pressure regulating valve device which combines in one housing a unitary valve device performing dual functions of a vehicle load responsive control valve and of a relay valve, whereby the relay valve function is effected by pressure regulated by the vehicle load function. The dual purpose valve device functions as a unit in a single housing to thereby reduce manufacturing costs and installation space required.
摘要:
The present invention is a braking value transmitter with a pedal to modulate the braking pressure. The pedal is braced against a spring. The force exerted by the pedal or the position of the pedal is sensed by an electronic sensor. The output signal of the sensor is fed to an electronic system, which transforms the approximately linear characteristic of the sensor into a progressive characteristic.
摘要:
A protection circuit for monitoring and recognizing an undervoltage condition in the electrical system of a motor vehicle having an anti-skid brake control system in order to minimize and reduce any adverse effects on the braking action of the vehicle wheels. The protection circuit includes at least one comparator circuit to recognize if the voltage falls below a predetermined reference threshold voltage. When the supply voltage falls below the threshold voltage, the comparator circuit deactivates at least one of two diagonal switching circuits to remove automatic brakes on at least two wheels of a vehicle by the anti-skid brake control system.
摘要:
A gear shift position sensing arrangement for a gear selector unit that selects the transmission gears indirectly. Magnetic sensors are arranged in the gear selector unit housing so as to be activated when a permanent magnet associated with the gear shift lever is brought into magnetic proximity therewith.
摘要:
A gear shift mechanism for providing a vehicle operator with a "feel" of a desired gear change being completed in a power operated gear unit. A drum disc connected to the gear shift lever is formed with a recess in which a locking pin of an actuator valve is engageable when the gear shift lever is operated to a shift position, thereby limiting further movement of the gear shift lever. A sensor device associated with the gear unit detects completion of the gear change and operates the actuator to retract the locking pin from the recess to allow further movement of the gear shift lever, as an indication to the vehicle operator that the intended gear change is completed, so that he may engage the clutch and apply gas.
摘要:
An antiskid brake control system in which an electronic evaluation circuit subject to dynamic behavior signals produced by a wheel sensor associated with one wheel of an axle controls modulator valve device in the brake cylinder fluid pressure conduit to adjust the brake cylinder pressure at the sensed wheel as well as at the non-sensed wheel of the axle independently of an operator controlled brake valve device. There is provided in alternate arrangements of the invention an electrical delay element via which either the supply or exhaust valve comprising the modulator valve device associated with the non-sensed wheel is controlled so that the non-sensed wheel brake pressure development is inhibited relative to the sensed wheel brake pressure to provide better stability of the non-sensed wheel. Another arrangement provides an electrical delay element via which the exhaust valve comprising the modulator valve device of the sensed wheel is controlled so as to inhibit the exhaust of brake pressure therefrom while the non-sensed wheel brake pressure is reduced in the usual manner under control of the evaluation device when a wheel skid condition of the sensed wheel is detected. As an alternative to the electrical delay elements in these arrangements, there may be provided a fluid pressure flow restrictor in the appropriate brake cylinder conduit, with the direction of restricted flow being controlled by a one-way check valve.
摘要:
A wheel anti-skid brake control system for controlling the braking effort of the four wheels of a motor vehicle. The system includes a speed sensor, an electronic evaluating circuit, a monitoring safety circuit, a switching device and a solenoid regulated valve for each wheel for deactivating the braking effort of a pair of diagonally opposed wheels when a malfunction occurs in an associated electronic evaluating circuit.