• The signal crankshaft degrees position (Crank shaft position) is a signal sent from the encoder up ligament (Incremental encoder) that is installed with the flywheel (Flywheel) which, when the engine begins to rotate. Sinew encoder, it will start sending the signal to the control device immediately. In which the signal was sent is used for positional degree of crankshaft.• Engine revs (Engine speed), is measured by n encoder up which will make them aware of the relationship between the degree of crankshaft with time, which is used to define the intervals in the fuel injection. (Duration) • The pressure in the fuel rail joint pipe (Common-rail pressure) can tell by pressure sensors (Pressure sensor) is installed within the pipe rail joint. When fuel pressure is changed. Pressure sensor signal voltage to the device designed to control (Controller) then the controller will control the tongue controls the extraction of fuel. (Suction control valve, SCV) in order to get fuel injection pressure as required. The relationship between voltage and fuel injection pressure shown in Figure 3.2.
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