IO-240 Series Engine Installation & Operation Manual
2-17
31 October 2011
Engine Description
pressure for the higher engine speeds. This combination of mechanical control circuits
ensures proper pump pressure and delivery for all engine operating speeds.
Figure 2-21. Standard Fuel Pump
IO-240-B model engines may be equipped with an altitude compensating fuel pump
which adjusts fuel pressure to compensate for atmospheric variations (Figure 2-22). The
IO-240-B fuel system with altitude compensating fuel pump incorporates a fuel filter
between the fuel pump and fuel manifold valve. From the fuel filter, fuel flows to the fuel
manifold valve and subsequently to the injector nozzles.
Figure 2-22. Altitude Compensating Fuel Pump
PATH TO
RELIEF VALVE
FUEL INLET
STOP PIN
VAPOR RETURN
DRY BAY DRAIN
FUEL SUPPLY TO ENGINE
MIXTURE
CONTROL
LOW PRESSURE
RELIEF VALVE
ANEROID
ADJUSTMENT
PATH TO
RELIEF VALVE
FUEL INLET
STOP PIN
VAPOR RETURN
DRY BAY DRAIN
FUEL SUPPLY TO ENGINE
MIXTURE
CONTROL
LOW PRESSURE
RELIEF VALVE
ANEROID
ADJUSTMENT
Содержание IO-240-A
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