摘要:
An anti-locking automotive vehicle braking unit wherein to achieve a reduction of the costs of manufacture and of mounting with an increase of reliability in operation, a pneumatic device (39, 40) is provided for venting of the first power chamber (5) and/or evacuation of the second power chamber (6) of the vacuum brake power booster (1) in the event of a slip control action. This renders the boosting power of the vacuum brake power booster effective or ineffective in a direction opposed to the direction of actuation of the master brake cylinder (2).
摘要:
A tandem master cylinder in which the primary piston and the secondary piston are configured in the shape of plunger pistons which are captivated to each other in the longitudinal bore of the cylinder housing. A cylindrical bushing is provided in the housing longitudinal bore and accommodates sealing cups sealing off the two pistons. The two valves which control hydraulic fluid flow are actuatable independently of each other.
摘要:
The invention relates to an interface device (100) for an electronic sensor system (200) comprising a plurality of sensors (210, 220) and a processing unit (230) for controlling the sensors (210, 220) and/or analysing sensor data obtained by the sensors (210, 220), where the sensors (210, 220) can be connected to the processing unit (230) via the interface device (100).According to the invention, the interface device (100) is able to accommodate simultaneously at least two sensor interface units (110, 120) for connecting to the sensors (210, 220), where each sensor interface unit (110, 120) can be selected from a plurality of sensor interface units, which differ at least by a different number of sensor channels.
摘要:
A process is provided for measuring physical values of light-scattering moving particles by means of laser Doppler anemometry and to a corresponding laser Doppler anemometer (LDA) with phase modulation. Generating a moving intensity-modulated superimposition signal in the measured volume of a LDA which is based on an uncomplicated driving of the phase modulator is achieved by having the phase modulator being driven by two sinusoidal driving signals with different frequencies (.omega..sub.1, .omega..sub.2) which are coupled so as to be fixed with respect to phase and frequency and wherein one frequency (.omega..sub.2) is an integer multiple of the other frequency (.omega..sub.1), and a filter frequency (f.sub.F) which is a common multiple of the two frequencies (.omega..sub.1, .omega..sub.2) is filtered out from the output signal of the receiver by a bandpass filter. For this purpose, one of two sidebands occurring in the output signal of the receiver is suppressed by the appropriate amplitude adjustment of the driving signals at the phase modulator. The process and related arrangement are used for measuring velocity in flowing media and for measurements of length and acceleration of solid surfaces.
摘要:
A phase-modulated interferometer has improved control and signal processing. Superimposition signals capable of evaluation in a phase-modulated interferometer without a complicated sawtooth control of the phase modulator are attained, in that two sinusoidal control signals which have modulation frequencies (.omega..sub.1, .omega..sub.2) and are rigidly coupled with respect to phase and frequency are applied to the known phase modulator and a cosine signal which is used in a conventional manner for evaluating the phase displacement is filtered of the superimposition signal generated in the interferometer by an electronic bandpass filter. At the filter frequency (.omega..sub.F) of the bandpass filter, an odd-number harmonic and an even-number harmonic of the two modulation frequencies (.omega..sub.1, .omega..sub.2) have the same frequency, when the amplitudes (.phi..sub.1, .phi..sub.2) of the control signals satisfy the condition for the suitable operating point of the phase modulator. The improvement has application to phase-modulated interferometers, in particular, for precision distance measuring devices, preferably by the heterodyne evaluating method.
摘要:
An SLI battery for use in vehicle applications includes a container, a positive plate and a negative plate disposed within the container, and a separator disposed within the container and separating the positive plate and the negative plate. The positive plate includes a frame, a lug, and a plurality of wires and is formed by book mold gravity casting. The plate is formed of a lead-based alloy consisting essentially of lead, tin in the range of greater than 0.5 percent to about 1.2 percent, calcium in an amount such that the ratio of tin to calcium of greater than 12:1, and silver in the range of greater than 0 to less than 0.015 percent, where the percentages are based upon the total weight of the alloy.
摘要:
The invention relates to an interface device (100) for an electronic sensor system (200) comprising a plurality of sensors (210, 220) and a processing unit (230) for controlling the sensors (210, 220) and/or analyzing sensor data obtained by the sensors (210, 220), where the sensors (210, 220) can be connected to the processing unit (230) via the interface device (100).According to the invention, the interface device (100) is able to accommodate simultaneously at least two sensor interface units (110, 120) for connecting to the sensors (210, 220), where each sensor interface unit (110, 120) can be selected from a plurality of sensor interface units, which differ at least by a different number of sensor channels.
摘要:
A ferrule (4) according to the invention for an optical fiber (1)is characterised in that the ferrule (4) is produced from plastics material and is welded on the optical fiber (1), which also consists of plastics material, preferably by ultrasound. The cladding (2) of the optical fiber (1) comprises depressions (3) which on welding also produce an interlocking fit in addition to the material connection.
摘要:
A sealing valve 10 for container openings made from rubber elastic material and having a stopper member 11 which can be introduced into the container opening up to a stopper collar 12 projecting beyond the stopper member 11 in a radial direction 26. At least one control channel 16 is formed on the stopper member 11 and extends in the direction of the longitudinal axis 24 of sealing valve 10 from one end of the stopper member 11 facing an inner region of the container 20. A sealing lip 15 is formed on the stopper collar 11 and can seat in a sealing fashion on a container edge 25 surrounding the container opening. The stopper collar 12 has a control channel section 29 transverse to the control channel 16 of a stopper member 11 which extends this control channel 16 up to the sealing lip 15. A reliable venting is guaranteed while simultaneously securing sealing to prevent the escape of battery liquids. Economical production with large yield is also facilitated.
摘要:
A fuel supply system, having a housing, in which a pistonlike element is disposed longitudinally displaceably in a bore and is guided sealingly in the bore by a guide portion. On one end, the guide portion adjoins a first fuel-filled chamber, and on its other end it adjoins a second fuel-filled chamber. At least one recess extending at least approximately in the circumferential direction is embodied in the guide portion of the pistonlike element and extends over at least part of the circumference of the pistonlike element and, viewed in the longitudinal direction of the pistonlike element, has an asymmetrical cross section.