Page 727 - PPL-engelsk 2025
P. 727
Aircraft general knowledge
The pistons are connected to the crankshaft via the connecting rod.
The camshaft controls the opening and closing of the valves and the ignition
timing.
The valves are hidden inside the upper part of the cylinder.
The oil ring must take oil up into the cylinder to lubricate the walls.
The piston rings ensure tightness so that the air/fuel mixture can be
compressed.
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8.8.3 4-stroke principle
The engine operates according to the 4-stroke principle. Here is the principle.
Flyveteori PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 727
