3232877 - 1060E diesel pressure pump

COMPONENT DESCRIPTION

PRESSURE PUMP

Specifcations

TypeIt is the 'radial jet' type with three radial pistons (total capacity 0.567 cm[sup3 ]) and is driven by the timing belt without requiring synchronization.Structure

Each pumping unit consists of:

  • a piston (5) operated by a cam (2) fixed to the pump (6) shaft
  • an inlet valve (3)
  • a supply ball valve (4).
The pressure pump must be supplied with a pressure of at least 0.5 bar; so the fuel system has an auxiliary pump immersed in the fuel tank.The maximum supply pressure reaches 1400 bar. The pressure pump is lubricated and cooled by the same fuel by means of suitable ducts.
1. Cylinder 2. Cam 3. Inlet plate valve 4. Ball supply valve 5. Piston 6. Pump shaft 7. Low pressure inlet (from the fuel filter) 8. High pressure supply (to the single fuel manifold) 9. Low pressure supply (to the fuel return manifold pipe)

PRESSURE REGULATOR

Specifcations

StructureIt is mounted on the pressure pump and controlled by the engine management control unit. It regulates the pressure of the fuel supply to the injectors.

The pressure regulator basically consists of:

  • a ball plunger (1)
  • a pin (2) controlling valve (3)
  • preload spring (4)
  • a coil (5).
1. Spherical shutter 2. Pin 3. Valve 4 Pre-loading spring 5. Coil 6. Casing 7. Anchor