DIESELELIMFILTERSSYNTAPORE™ · EF9PRIMARYELIMFILTERSSYNTAPORE™ · EF9SECONDARY
Larger particles held by the primary, finer particles by the secondaryTank, primary spin-on (suction side), transfer pump, secondary spin-on (on the engine), injection railConceptual illustration of a diesel fuel circuit with two SYNTAPORE™ particulate filters. The primary, on the suction side before the transfer pump, holds the larger particles and protects the pump. The secondary, on the pressure side on the engine, holds the finer particles before the fuel reaches the injection system. Both are spin-ons shown in section, with the pleated element visible; at service each cartridge is replaced. Illustrative simulation of how it works: a conceptual animation, not an engineering model or test result, and it shows no product data.

How to read this figure

  1. Tank. Fuel leaves the tank through the suction line. The dark dots in the fuel represent the particulate it carries; moving the cursor sideways changes how much.
  2. Primary spin-on, suction side. The transfer pump draws the fuel through the first pleated SYNTAPORE™ element. The larger particles stay on the pleats, so this is the filter that takes most of the contaminant load.
  3. Transfer pump. The pump receives fuel that no longer carries the larger particles and sends it, now under pressure, toward the engine.
  4. Secondary spin-on, pressure side. The fuel crosses a second pleated SYNTAPORE™ element, which holds the finer particles. It is the last filtration stage before the injection system.
  5. Injection rail and injectors. The rail distributes the fuel to the four injectors: the components both stages exist to protect.
  6. Service. Moving the cursor to the top of the figure, or pressing E, runs the service: both spin-ons come off their heads and new ones are fitted. Heads, lines and pump stay on the equipment.