Page 4 - Workbook_Sample

Page 3-1

The Airplane Engine 8. [C3/Figure 3] Label the four strokes:

1. Fill in the blank:
Most general aviation airplane engines are of the
_______________ opposed variety.

2. Fill in the blanks:
Horizontally opposed cylinder arrangements pack a lot of
engine into a _____________ amount of space and they are
relatively ______________ to operate.

Four Cycle Engine

3. Fill in the blanks:
Name the four cycles of an airplane engine:
____________, ____________, ____________, ____________ .

4. Fill in the blank:
While the piston is in its downward journey, the __________
valve opens, and a mixture of fuel and air rushes in.

5. Fill in the blank:
The _______________ cycle occurs when the intake valve The Ignition System
closes and the piston rises.
Dual Ignition Systems
6. Fill in the blank:
Just before the cylinder hits the top of its return journey, 9.
the _______________ _______________ fire. One purpose of the dual ignition system on an aircraft
engine is to provide for
7. Fill in the blank: A. improved engine performance.
The burning mixture pushes the piston downward. This is B. uniform heat distribution.
the _______________ stroke. C. balanced cylinder head pressure.