Linear Actuators 101

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Video Link - Exploring the ECU hardware and testing - Part 2 • • Exploring the ECU hardware and testin... • Exploring the ECU hardware and testing - Part 1 • This video explains the ECU circuit board and demonstrates the way of crank and cam signal simulation to run the ECU and perform the different testing. • The engine ECU controls the injection of the fuel to the engine and the timing of the spark to ignite it. It determines the position of the rotation using a Crankshaft Position Sensor so that the injectors and ignition system are activated at precisely the correct time. It uses also number of sensor to read the status of the engine in order to run the engine at optimum performance. • The input to the ECU includes the following sensors: • Crank Position Sensor • Cam Position Sensor • Knock Sensor • Engine Coolant Temperature Sensor • Manifold Absolute Pressure or MAP Sensor • Mass Air Flow or MAF Sensor • Oxygen/O2/Lambda Sensor • Fuel Pressure Sensor • Engine Speed Sensor • Throttle Position Sensor • The output from the ECU includes the following devices: • Injectors • Throttle body control • Ignition coil • Load relay output • Malfunction lamp • Fuel pump • Idle control

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