In cars powered by gasoline or diesel, the fuel is delivered directly to the injectors under a certain pressure from the tank of the car using a pump. The injector, which is connected to the electronic control unit by electric cables, injects this fuel into the combustion chamber precisely at the same time. Why exactly a time mode because optimizing combustion efficiency is very important here. Spraying the fuel continuously at a constant pressure will definitely lead to excessive consumption of gasoline or diesel. Therefore, it can be said that the brain of the system (ECU) controls the flow of data collected through various sensors and tells the injector how much fuel to inject at what time. Let's say you're driving in 5th gear, and at this point you need a relatively high speed, and accordingly you press the gas pedal, depending on how much the pedal is pressed, the injector sprays more fuel. At the end of the injector there is a valve that opens and closes. As soon as an electric current is applied to it, it opens and the fuel goes to the combustion chamber. The ECU sends a series of electrical pulses to each injector, which determines when and for how long the injector valve should open.
P.S Before electronic injectors were invented in the late 1960s, they used a system called a carburetor. Let's see what it is
