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All modern petrol injection systems use indirect injection. A special pump sends the fuel under pressure from the fuel tank to the engine bay where, still under pressure, it is distributed individually to each cylinder.
Depending on the particular system, the fuel is fired into either the inlet manifold or the inlet port via an injector . This works much like the spray nozzle of a hose , ensuring that the fuel comes out as a fine mist. The fuel mixes with the air passing through the inlet manifold or port and the fuel/air mixture enters the combustion chamber.
Some cars have multi-point fuel injection where each cylinder is fed by its own injector. This is complex and can be expensive. It's more common to have single-point injection where a single injector feeds all the cylinders, or to have one injector to every two cylinders.
How does a petrol fuel injection system work?
All modern petrol injection systems use indirect injection. A special pump sends the fuel under pressure from the fuel tank to the engine bay where, still under pressure, it is distributed individually to each cylinder. ... This works much like the spray nozzle of a hose , ensuring that the fuel comes out as a fine mist.
What is the purpose of petrol injection?
Abstract: The purpose of the fuel injection system is to deliver fuel into the engine cylinders, while precisely controlling the injection timing, fuel atomization, and other parameters. The main types of injection systems include pump-line-nozzle, unit injector, and common rail.
Is carburetor better than fuel injection?
So with a carburetor, the best fuel to air ratio for each cylinder is approximated for the best performance. However, carburetors do last longer than fuel injection systems and are favored in motor sports. ... The carburetor is currently much less expensive than the electronic fuel injection systems
Does fuel injection increase horsepower?
Larger throttle body and injectors
Depending on what type of engine you have, you can gain as much as 10-20 more horsepower and comparable torque. ... Also remember that a larger throttle requires higher-flow fuel injectors. Throttle body and injector size are proportional.
fuel injection system pdf
fuel injection vs carburetor
fuel injector parts and functions
types of fuel injection system
fuel injector diagram
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