Airplane Description
DV 20 E AFM
Page 7 - 32 Rev. 2 22-Mar-2022 Doc. No. 4.01.25-E
7.8.5 FUEL SYSTEM
General
Fuel is stored in the fuel tank which is located below the baggage compartment.
The fuel is injected with high pressure into the cylinders. The injection nozzles (one per
cylinder) are supplied with fuel by the fuel rail. Pressure inside the fuel rail is generated
by two independent electric fuel pumps. According to the power setting the rail pressure
is controlled by the fuel pressure regulator. Not onjected fuel is fed back into the fuel tank.
Fuel Tank
The 93 liter (24.5 US gal) aluminium tank is located behind the seats, below the baggage
compartment. The tank filler on the left side of the fuselage behind the canopy is connected
to the tank with a rubber hose. A grounding stud is located on the lower side of the
fuselage near the trailing edge of the left hand wing. The airplane must be grounded prior
to any fueling operation.
The tank vent line runs from the filler neck through the fuselage bottom skin to the exterior
of the airplane. The vent line is the translucent plastic hose adjacent to the left wing root.
The vent line must be clear for proper fuel system operation. The tank has an integral
sump which must be drained prior to each flight, by pushing up on the brass tube which
protrudes through the underside of the fuselage, forward of the trailing edge of the left
hand wing.
To drain the tank sump, activate the spring loaded drain by pushing the brass tube in with
a drain container. The brass tube protrudes approximately 30 mm (1 1/8 in) from the
fuselage contour and is located on the left side of the fuselage, approximately at the same
station as the fuel filler cap.
An outlet with a finger filter is installed at the bottom of the tank.
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