Fuel feed circuit

FUEL FEED CIRCUIT

The main components of the fuel system are as follows: tank, filter, injection pump and injectors. Fuel flows from tank (6) to injection pump (2) through filter (7). A pump (9) is fitted upstream from filter (7) to prime the fuel if necessary (e.g., after replacing the fuel filter).

Rotary injection pump (2) ensures injectors (1) are properly supplied with fuel in the firing order 1-3-4-2.

NOTE Because of the particular shape of the tank, an air pocket could form at the bottom during refuelling which would prevent the tank from being completely filled. This is prevented by pipe (5), which allows air to flow out from the lowest part to ensure complete filling of the tank.

1. Injectors
2. Injection pump
3. Delivery line from tank to filter
4. Return line (recirculation)
5. Vent pipe
6. Reservoir
7. Fuel filter
8. Fuel outlet line from filter to injection pump
9. Hand-operated priming pump