What are fuel injectors? (27 characters)

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Fuel injectors replace carburettors, delivering fuel to an engine’s combustion chambers. Electronic fuel injection systems have sensors and a computer to monitor fuel delivery, with multi-port sequential fuel injection providing the quickest response time. Fuel injectors are more precise and conserve gas, while also improving power and acceleration.

Simply put, fuel injectors deliver fuel into an engine’s combustion chambers for burning. Fuel injectors have now completely replaced carburettors, which were used for fuel delivery for many years. While carburetors essentially use vacuum to draw fuel into the engine’s combustion chambers, fuel injectors are part of a computerized system that sprays fuel into the combustion chambers at regular intervals.

There are several different types of electronic fuel injection systems. The simplest type is called throttle body injection. A throttle body injector essentially works like a computerized carburetor, with one fuel injector supplying fuel to all of the combustion chambers. The throttle body injector tends to resemble a carburetor in that both sit on top of the engine and are configured to deliver fuel to all cylinders.

A more advanced type of electronic fuel injection has a separate fuel injector for each cylinder; This type of fuel delivery system is called multi-port fuel injection. With a multi-port configuration, all fuel injectors spray fuel at the same time, even though the cylinders don’t all fire at the same time. For this reason, the most advanced type of electronic fuel injection is multi-port sequential fuel injection, which causes each injector to spray immediately before that particular cylinder is fired. Thus, the driver of a car with multi-port sequential fuel injection will get a quicker response time when stepping on the accelerator, since the fuel delivery system does not have to finish one engine revolution before it can ramp up. the fuel delivery frequency.

Electronic fuel injection is a complicated system, consisting of more than just fuel injectors. A computer monitors the entire system, determining when the injectors spray and how much fuel is delivered. Various sensors send vital information to the computer for processing. For example, the throttle position sensor monitors where the accelerator pedal, also called the throttle, is positioned; The harder the accelerator pedal is pressed, the faster the engine goes and the more often the fuel injectors need to spray. Another sensor, the oxygen sensor, monitors the levels of unburned fuel in the exhaust; If too much fuel goes through without burning, the sensor tells the computer that the engine is running too rich, and the computer tells the injectors to spray less fuel each rotation.

Although electronic fuel injection is much more complicated and requires more computerization than carburetors, fuel delivery is also much more precise. Fuel injectors help protect our air and conserve gas by preventing unnecessary fuel from being dumped into a car engine. Fuel injectors also give cars better power and acceleration, as well as the potential for performance power levels by essentially reprogramming the computer or increasing fuel pressure levels.

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