Definition
The system on a reciprocating or turbine engine that draws in outside air, filters it, and delivers it to the cylinders or compressor section for combustion. On a piston engine it typically includes the air intake, air filter, alternate air or carburetor heat source, throttle body, and intake manifold. On a turbine engine it includes the inlet duct that delivers air to the compressor.
Plain English
The plumbing that brings outside air into the engine so it can mix with fuel and burn. It pulls air in, cleans it, and routes it to where combustion happens.
Context Anchor
Seen in piston-engine aircraft discussions of engine operation, carburetor icing, fuel injection, alternate air, and power loss troubleshooting.
Derivation
From the Latin inducere, meaning 'to lead in.' The induction system literally leads air into the engine, which makes the term easier to remember than it first sounds.
Why Pilots Care
A blocked or icing-prone induction system reduces engine power and can cause roughness or failure; pilots must understand its function to use carburetor heat correctly and maintain safe operation.
Analogy
Think of it like the engine’s breathing path. If that path is restricted, the engine cannot “breathe” normally and power suffers.
Intuition Check
Induction System does not mean an electrical induction system or an introduction ceremony. Here, induction means bringing intake air into the engine.
Example Sentence 1
When the pilot suspected induction icing, he pulled carburetor heat to route warm air into the induction system.
Example Sentence 2
A dirty air filter restricts airflow through the induction system and can cause a noticeable drop in engine performance during takeoff.