Pump, Fuel Injection, High Pressure: Description
High-pressure fuel lines deliver fuel under extreme pressure from the injection pump to the injectors. This could be as high as 207 bar (3, 002 psi). Use extreme caution when inspecting for high-pressure fuel leaks. Inspect for high-pressure fuel leaks with a sheet of cardboard. Wear safety goggles and adequate protective clothing when servicing fuel system. Fuel under this amount of pressure can penetrate skin causing serious or fatal injury.
The high pressure fuel pump (1) is mounted to the rear of the cylinder head and is covered with a sound protection cover. The high pressure fuel pump is operated by a dedicated lobe on the exhaust camshaft.
The Fuel Quantity Solenoid (FQS) is integral to the high pressure pump and is not serviced separately.
The high pressure fuel pump features:
- Fuel quantity solenoid
- Fuel supply to fuel rail
- Fuel intake
- Roller cup