Definition
A subsystem within an aircraft carburetor that automatically adds extra fuel to the fuel-air mixture when the engine is operated at high power settings. The additional fuel cools the cylinders and prevents detonation during takeoff and full-power climbs.
Plain English
A part of the carburetor that quietly adds extra fuel when you push the throttle to full power. The extra fuel keeps the engine cool and stops it from damaging itself under heavy load.
Context Anchor
Seen in piston-engine fuel system and carburetor discussions, especially for takeoff, climb, and other high-power operation.
Derivation
Power refers to high engine output settings. Enrichment means making something richer — in this case, making the fuel-air mixture richer by adding more fuel. The name describes exactly what it does: it enriches the mixture during high-power operation.
Why Pilots Care
Protects the engine from detonation and overheating when maximum power is required, allowing safe operation during critical phases of flight.
Intuition Check
“Enrichment” does not mean improving the engine in a general way. Here it specifically means adding extra fuel to the fuel-air mixture during high-power operation.
Example Sentence 1
On takeoff, the power-enrichment system delivers extra fuel to keep the cylinders cool during the full-throttle climb.
Example Sentence 2
During climb the pilot monitors engine temperatures knowing the power-enrichment system is supplying extra fuel.