How automotive electronic injection systems work

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Jordan Monsalvez

Published on Jul 22, 2024
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In the video, detailed concepts are described on the operation of single-point and multi-point systems, step by step gradually, on my channel I will leave the complete course on electronic injection, SINGLE-POINT, MECHANICAL, MULTI-POINT AND SEQUENTIAL INJECTION. 00:00 Introduction 00:30 Operating principle 00:50 Difference between systems 01:35 Injection body 04:25 Fuel pump 07:47 Pressure regulator 10:25 Injector 11:07 Injector connections 13:23 Injector description SINGLE-POINT SYSTEMS were developed in order to replace the CARBURETOR. Its operating principle is based on a CONTROL UNIT (ECU) that, by receiving information from a series of SENSORS, allows it to know the different operating conditions of the engine. Managing the operation of both IGNITION and POWER SUPPLY. SINGLE POINT INJECTION SYSTEMS are very similar to MULTIPOINT systems, however the INJECTOR operation rate is somewhat different. In simultaneous MULTIPOINT SYSTEMS, each injector is activated once per revolution of the CRANKSHAFT. In SEQUENTIAL SYSTEMS, once every two revolutions and in SINGLE POINT SYSTEMS, GASOLINE is supplied once every half revolution, because a single injector must feed all the CYLINDERS. In this video you will see in detail the INJECTION BODY, BUTTERFLY OR POTENTIOMETER, the inlet of OXYGEN or oxidizer and fuel. We will also see the FUEL TANK, with its respective connection lines, from the FUEL PUMP, through the FILTERS and the PRESSURE REGULATOR. The connections from the injector to the control center (ECU, ECU, ECM) and the injection time at IDLE will also be detailed.

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