摘要:
An electromagnetic relay is designed so that it can be manufactured inexpensively and is based on a small unit size. The relay has a base group and a magnet system, it being possible to manufacture these separately and join them together as preassembled modular units. The base group has a base plate in which a component having a component wire is fixed in position. The magnet system has two flat pins each of which has a hole with a sharpened edge. When the magnet system is joined together with the base group, the flat pins are pushed into the base plate, in each case the edge at the wire component forming a contact created by an insulation displacement connection. The relay is preferably used in the automotive industry, especially if installation conditions are cramped.
摘要:
An arrangement monitors a consumer in combination with an internal combustion engine or motor vehicle especially for monitoring an electric drive which is driven by an output stage in the form of a bridge circuit. Potentials are compared in the area of the consumer or of the output stage to pregiven threshold values derived from the normal operation. From this comparison, an alarm signal is generated in a time-delayed manner with the time delay being dependent upon the magnitude of the drive signal.
摘要:
A tire pressure detector for motor vehicles which is to be fastened to a wheel rim comprises a pressure switch actuated by the air pressure in the tire for monitoring the tire pressure. The pressure switch includes a reference pressure chamber with an electrically conductive switching diaphragm which closes the chamber toward the tire and which cooperates with a contact pin of the reference pressure chamber and an electric oscillating circuit connected to the latter in the detector housing. The reference pressure chamber (23) is axially clamped between a supporting ring and a spacing ring of insulating material in the metallic detector housing by a radial collar, which is formed, so that an annular gap is formed between the collar and the inner wall of the detector housing.
摘要:
In order to permit alternate transfer of different sets of data to a microprocessor over the same input/output lines, a coupling-decoupling circuit includes series-connected diodes and inverters. The input/output lines are coupled to a diode matrix which is scanned line-by-line and determines the transfer of a set of primary data in a first time interval during which the admission of supplementary data from secondary data lines is blocked. In a second time interval, the rows of the diode matrix are all placed in the same logical state while the supplementary data is admitted by the coupling-decoupling circuit to the same input/output lines which received the primary data.
摘要:
To supervise a program controlled device which is subject to stray noise or disturbance pulses, particularly microprocessor controlled automotive vehicle electronic systems, a timing circuit is provided responsive to check pulses added to the program and defining a timing interval, the monitoring system distinguishing between disturbance pulses and static defects by supervising the control pulses and, upon failure of the control pulses, generating a program restart or interrupt signal, respectively, which both initiate a new start of the program cycle or, respectively, define a timing interval which, upon failure to sense further control pulses, initiates energization of an emergency switching system. Continuous failure to receive control pulses also can initiate the emergency switching system. To permit start-up, and before control pulses are obtained, a time delay circuit is provided which disables the monitoring system upon switching ON of the program controlled device at least for the time period of one check pulse cycle.
摘要:
A pressure sensor for determining air pressure in an interior of a motor vehicle tire has a housing for extending into a recess formed in a rim wall of the tire, and an annular flange located on the housing and supporting a spring against a side of the rim wall which spring provides for clamping an outer flange portion of the pressure sensor housing against another side of the rim wall.
摘要:
A tire pressure sensor to be fastened to a rim of a vehicle wheel for sensing an inflation pressure of a tire mounted on the rim, the tire pressure sensor comprising a reference pressure chamber having a gas filled reference pressure volume, an electrically conductive diaphragm for sealingly separating the reference pressure chamber at a tire interior, a sensor electric circuit, a contact pin located in the reference pressure chamber and cooperating with the electrically inductive diaphragm for closing the sensor electric circuit when the tire inflation pressure is at a predetermined value, and an additional pressure chamber communicating with the reference pressure chamber and deformable to change the reference pressure volume therein to thereby establish a predetermined reference pressure in the reference pressure chamber.
摘要:
In an ignition system for an internal combustion engine, a digital system for computing the timing advance is provided. Constants approximating the curve of timing advance v. engine speed are stored in a microprocessor. The positive half waves of primary current in the magneto generate the ignition energy and also generate a reference signal for controlling the actual ignition time. The sequence of reference signals is also used to generate a digital value indicative of engine speed. The latter is used to address the read only memory in which the constants for approximating the timing advance curve are stored. After each reference signal, the value read out from the read only memory is counted down by a counter. When the counter reaches the value of zero, ignition is started.
摘要:
An additional diode is provided in series with the charging diode through which the storage capacitor of a magneto ignition system is charged and the shutdown switch for the engine is connected between the common connection of the two diodes and the common connection of the magneto generator, and the capacitor diodes, because of their high back resistance, prevent any high positive or negative voltages from appearing across an open shutdown switch.
摘要:
In a pressure sensor for detecting the air pressure in the interior of tubeless tires of motor vehicles, on a rim having two edge beads extending around its outside and a drum-like base, to facilitate mounting and provide malfunction-free, exact detection of pressure it is provided that the pressure sensor (10) is disposed in a bore (9) of the preferably radially inner section (5) of a bead (3), and in particular the longitudinal axis (43) of the pressure sensor (10) forms an acute angle with the axis (44) of the rim.