Fuel System/metering iclicker Flashcards
The general requirements for an aircraft engine include : efficiency, reliability, and a low weight-to-horsepower ratio. It also must:
have good fuel economy, high durability, and be capable of sustained high power output.
The crankcase of an aircraft engine:
Is the foundation of the engine containing crankshaft bearings and cylinder pads
Moveable counterweights reduce
the dynamie vibrations in an aircraft reciprocating engine.
Some cylinder barrels are hardened by
Nitriding.
Master rod bearings are generally what type of bearing?
Plain
Full-floating piston pins are those which allow motion between the pin and
the piston and the small end of the connecting rod.
The five events of a four stroke cycle engine, in the correct order of their occurrence, are
Intake, compression, ignition, power, exhaust.
The actual power delivered to the propeller of an aircraft engine is called
brake horsepower.
The horsepower developed in the cylinders of a reciprocating engine is known as the
Indicated horsepower.
Ground boosted engine manifold pressure is generally considered to be any manifold pressure above
30 Inches Hg.
When starting an engine equipped with a carburetor air heater, in what position should the heater control be placed?
Cola position filtered alr
What directly regulates the speed of a turbocharger?
waste gate
What carburetor component measures the amount of air delivered to the engine ?
venturi
The throttle valve of float-type carburetors is located
Between the venturi and the engine
Carburetor icing is most severe at
At temperatures belween 30 and 40 “F
The economizer system in a floal-type carburetor
Increases the fuel air ratio at high power settings.
The fuel level within the float chamber of a properly adjusted float-type carburetor will
slightly lower than the discharge nozzle outlet.
Fuel is discharged for idling speeds on a float-type carburetor
from the idle discharge noze (orifice).
During which stage of engine operation would you want the fuel metering system to supply the leanest mixture.
Cruise Rpm.
All conditions being equal, a rich mixture burns faster than a lean mixture .
A gravity fed fuel system must supply 175% of the take off fuel flow requirement.
False 150%
During idle RPM the engine is primarily cooled
A rich fuel mixture
Which of the following is used on a pressure carburetor to increase fuel flow to the engine on takeoff power or engine settings above 75%.
Economizer system.
Which of the following fuel metering system has a fuel injector located near the cylinder head and uses venture and impact air to control the fuel flow.
Bendix RSA fuel injection system.
According to FAR 23.997 there must be a fuel strainer or main filter between the fuel tank outlet and the inlet of the fuel metering device.
True
