What is the purpose of fuel injector valve?
A device which receives pressurized fuel as a liquid and sprays it into an engine cylinder as a fine mist. It consists of a nozzle and nozzle holder or a body.
How does a fuel injection valve work?
The amount of fuel injected is controlled by a flap valve located in the engine’s air intake. The fuel then squirts out into the inlet port in the cylinder head. Each injector contains a spring-loaded valve that is kept closed by its spring pressure. The valve only opens when the fuel is squirted in.
What is the function of fuel 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.
What is injection valve?
Injection valves are mounted at the point of injection to connect the metering line. They protect against backflow and generate a defined back pressure. They are equipped with a check ball and a Hastelloy C spring (priming pressure approx. 0.5 bar). They may be fitted in any position.
What Causes fuel injector Problems?
Fuel injectors will fail when debris (water, dirt particles, etc.) or rust find their way into the system and, after time, plug up the nozzle, the armature, or the nozzle needle gets stuck. You should also consider fuel additives designed for stabilizing the fuel in your system.
Where do fuel injectors go?
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. Just think of the nozzle on the hose you use in your yard.
What are the three basic functions of the fuel system?
The function of the fuel system is to store and supply fuel to the cylinder chamber where it can be mixed with air, vaporized, and burned to produce energy. The fuel, which can be either gasoline or diesel is stored in a fuel tank.
How many valves A diesel engine has?
Commonly, each cylinder can use either two (one intake and one exhaust) or four valves (two intake and two exhaust). In modern diesel engines, four-valve designs dominate and offer the following key advantages over two valve designs: Optimized mixture formation resulting from the central, vertical injector.
What is fuel injector in diesel engine?
The fuel injection system lies at the very heart of the diesel engine. By pressurising and injecting the fuel, the system forces it into air that has been compressed to high pressure in the combustion chamber. The diesel fuel injection system consists of: injection nozzle – injects the fuel into the cylinder.
What are the symptoms of a leaking fuel injector?
Signs of Leaking Fuel Injectors
- Fuel consumption increases.
- Poor and shaky idling.
- Gasoline smells.
- Hard starts.
- Bad emission performance.
- Thinning oil.
- Hydrolocking.
Does the fuel system have a check valve?
A mechanical fuel pump has a two-port check valve, one that is located on the pump’s inlet and one that is located on the pump’s outlet. The check valve is designed to make the fuel in the vehicle only flow in the correct direction from the fuel pump and to maintain pressure.
Do I need fuel injector flush?
If you have never had the fuel injectors service or you are having problems that need the injectors flushed then it should be done. If you are not having any problems then running good fuel and additives in the fuel tank to keep the injectors clean will keep them clean.
How does a fuel injection system work?
Fuel injection systems either work via a throttle body containing as few as 2 injectors, or go straight into the port with one injector per cylinder. The injectors themselves spray gas into the combustion chamber like a spray bottle, allowing the gas to mix with air before ignition. The fuel is then ignited and the engine keeps on moving.
What are the types of injection fuel pump?
Know Your Vehicle: The 4 Types Of Diesel Fuel Pumps Common rail fuel injection pump. An electronically controlled diesel fuel supply system, this pump was developed to meet the strict 21st century exhaust gas regulations. Distributor (rotary) fuel injection pump. In-line fuel injection pump. Distributor injection pump.
