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2.7.7.4. Sensor of absolute pressure

The sensor of absolute pressure is the strain gage measuring pressure in a receiver. In the sensor there is a metal diaphragm connected to a small wire. Change of pressure causes a diaphragm deflection, a tension of a wire and change of its electric resistance. The control unit of the engine gives voltage of 5 V on the sensor and determines power failure size in the sensor. The sensor gives a signal in the form of tension, and in process of pressure decrease power failure in the sensor increases. As the sensor of absolute pressure is used as the air consumption sensor, its signal is one of important types of information which is used by EBU for regulation of supply of fuel and a corner of an advancing of ignition.


Fig. 2.239. Socket of the sensor of absolute pressure




Fig. 2.240. The scheme of connections of the sensor of temperature of the soaked-up air with EBU