How does a high pressure fuel injector work?

While high pressure-injectors inject the petrol into the combustion chamber, it improves combustion chamber cooling. This enables higher engine efficiency due to higher compression, which, in turn, increases fuel efficiency and torque. A high-pressure pump feeds the fuel to a high-pressure fuel-rail (aka common rail).

How does fuel injection works explain?

Fuel injectors are located in the intake manifold and spray fuel through a tiny nozzle. The fuel injector uses a special nozzle to spray the fuel as mist, instead of a strong jet stream. When the throttle valve opens, your fuel injector sprays fuel to mix with the air and then enters the engine’s combustion cylinders.

Why high pressures are required for the injection of fuel into the cylinder?

Increased pressure allows the fuel to be injected into the cylinder through smaller nozzle orifices without lengthening the injection duration. The smaller holes greatly enhance the mixing of fuel and air.

Where does high pressure fuel injector deliver fuel?

Explanation: Most diesel engines use a high-pressure fuel-injector system that will deliver pressurised fuel directly into the combustion chamber of the engine. This system is known as a direct-injection engine.

What is inside a fuel injector?

Starts here8:06How Fuel Injectors Work – YouTubeYouTube

What is the pressure of fuel injector?

Injection pressures during the whole process should be above 1000–1200 bar for a good spray formation and air–fuel mixture; a tendency in practice to 1600–1800 bar and higher is noted. The total nozzle area should be as small as possible in relation to cylinder diameter for good combustion, particularly at part load.

What’s inside a fuel injector?

What is the use of fuel injector?

injector, a device for injecting liquid fuel into an internal-combustion engine. The term is also used to describe an apparatus for injecting feed water into a boiler. In diesel engines fuel must be in a highly atomized form for proper combustion.

Where does a high pressure fuel injector deliver fuel HGV?

A high-pressure fuel injector delivers fuel into the cylinders. Most diesel engines use a high-pressure fuel injector system which will deliver pressurised fuel directly into the cylinders of the engine. This system is known as a direct injection engine.

What controls a fuel injector?

Electronic Control Unit (ECU) The ECU is the brain of the operation. It uses engine RPM and signals from different sensors to meter the fuel. It does this by telling the fuel injectors when and how long to fire. The ECU often controls other functions like the fuel pump and ignition timing.