Page 5 - Workbook_Sample

Chapter 3 - Engines: Knowledge of Engines Is Power
3-3

23. [C8/Figure 10] Label the carburetor’s components:

26.
The Idling System
Assuming the airplane has an updraft carburetor with an
24. Fill in the blank: accelerator pump, what happens when the engine isn’t
The _____________ jet is that portion of the carburetor that running and the throttle is pumped?
allows the engine to run when the throttle is pulled full aft. A. Fuel will rush up into the engine.
B. Nothing, unless you make the “Vroom, Vroom” sound.
The Accelerator Pump C. Fuel may fall to the bottom of the carburetor and soak
the air filter, creating an opportunity for an engine fire.
25.
Why doesn’t the engine quit or falter when the throttle is
opened abruptly? Atomization of Fuel
A. The idling jet keeps a constant flow of fuel into the engine.
B. The accelerator pump supplies a shot of fuel into the 27. Fill in the blanks:
throat of the carburetor along with the inrushing air. Fuel-air ratios of approximately _______________ part(s)
C. Gravity supplies the pressure to keep fuel entering the fuel to _______________ parts of air are the most efficient
throat of the carburetor when the throttle is opened. for combustion.