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2.7.7.12. Sensor of provision of a butterfly valve

Fig. 2.244. Sensor of provision of a butterfly valve


The sensor of provision of a butterfly valve is shown in fig. 2.244
The sensor of provision of a butterfly valve is installed on lateral face of the case of a butterfly valve, a mobile part of the sensor is connected to an axis of a butterfly valve. The sensor is executed in the form of the variable resistor (potentiometer) which resistance changes depending on the provision of a butterfly valve. When opening the gate resistance of the sensor decreases, and at its closing – increases. The control unit of the engine gives basic tension on the sensor and measures tension in an alarm chain of the sensor. EBU uses information from the sensor of provision of a butterfly valve for regulation of a corner of an advancing of ignition and duration of injection of fuel. On signals from the sensor of provision of a butterfly valve and the sensor of a mass consumption of EBU air calculates engine loading.

Fig. 2.245. Scheme of connections of the sensor of provision of a butterfly valve with EBU