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 is the fuel pressure in common rail?
29,000 PSI
Common rail direct fuel injection is a direct fuel injection system for petrol and diesel engines. On diesel engines, it features a high-pressure (2,000 BAR – 29,000 PSI) fuel rail feeding individual solenoid valves, as opposed to a low-pressure fuel pump feeding unit injectors or pump nozzles.
What causes high fuel pressure in common rail?
A faulty fuel pump or a clogged fuel filter causes lower than normal fuel pressure. A kink in the fuel return line results in higher than normal fuel pressure at the rail. High fuel pressure results in a rich air-fuel ratio because the increase in pressure forces more fuel through the injectors than required.
What is the pressure rating of a fuel injector?
The fuel injectors have a flow rating based on a fuel pressure of 40 psi. When you increase the fuel pressure, you increase the fuel injector’s flow rating.
Does fuel pressure affect injector flow?
Does fuel pressure affect injector flow? Yes, increasing fuel pressure will INCREASE the flow rate of the injector. DW injector flow rates are calculated at 3 bar (43.5 psi) of pressure.
What causes high fuel pressure?
Common causes of high fuel pressure include a bad fuel regulator or a clogged return line. You will need to perform two different tests to identify the reason for excessive fuel pressure. The first test requires you to relieve the system fuel pressure and connect a relief hose to the fuel return line.
Where is the fuel injection pressure sensor located?
A fuel rail pressure sensor (commonly known as a fuel pressure sensor) is used in many diesel and some gasoline engines. This sensor is usually located near the middle of the fuel rail and is linked to the engine control unit (ECU), which is the central computer of a vehicle.