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CONNECTION ARRANGEMENT FOR SENSING THE CURRENT CHANGING SIGNALS OF NEEDLE-STROKE SENSOR CONNECTED TO CONSTANT DIRECT VOLTAGE AND COMBINED WITH THE INJECTOR NOZZLE OF INTERNAL COMBUSTION ENGINES
CONNECTION ARRANGEMENT FOR SENSING THE CURRENT CHANGING SIGNALS OF NEEDLE-STROKE SENSOR CONNECTED TO CONSTANT DIRECT VOLTAGE AND COMBINED WITH THE INJECTOR NOZZLE OF INTERNAL COMBUSTION ENGINES
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机译:用于检测连接到恒定直流电压并与内部燃烧发动机的喷油嘴结合的针形传感器的电流变化信号的连接装置
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PCT No. PCT/AT86/00014 Sec. 371 Date Nov. 17, 1986 Sec. 102(e) Date Nov. 17, 1986 PCT Filed Feb. 19, 1986 PCT Pub. No. WO86/05235 PCT Pub. Date Sep. 12, 1986.A circuit arrangement to detect signals indicating a change in the current of a needle lift sensor of an injection nozzle in combustion engines, which is connected to a constant direct current supply. This circuit arrangement, which is intended to detect the signals indicating a change in current that are emitted by a needle lift sensor Zs of an injection nozzle in combustion engines that is connected to a direct current source, is designed in such a way that it will also detect minor signals indicating a change in current under the conditions prevailing in motor vehicles, which exhibit a high level of interference. For this purpose, the sensor (Zs) is connected to the controlled outlet (4) of a controlled direct current source (1) and a sensing resistor (RM) is connected between the outlet (3) of the regulating amplifier (2) and the outlet of the direct current source (1); the outlet (3) of the regulating amplifier (2) is connected to the input of an AC amplifier (5) with band-pass characteristics, and the outlet of the AC amplifier (5) is connected to the input of a Schmitt trigger (7), the output signal (UA) of which represents the changes in the sensor current (Is).
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