Definition
In a reciprocating engine fuel injection system, a component that receives metered fuel from the fuel control unit and distributes it evenly to the individual fuel discharge nozzles at each cylinder. It also establishes the fuel pressure required to open the nozzles and shuts off fuel flow cleanly when the engine is stopped.
Plain English
A small fuel-distribution box on a fuel-injected piston engine. Fuel comes in through one line, and the flow divider splits it evenly so every cylinder gets the same amount.
Context Anchor
Seen in piston-engine fuel-injection system descriptions, engine troubleshooting, and maintenance discussions about uneven fuel delivery to cylinders.
Derivation
From the plain-English words 'flow' (the movement of fuel) and 'divider' (something that splits one thing into several). The name describes exactly what it does: it takes one incoming fuel flow and divides it among the cylinders.
Why Pilots Care
Ensures balanced fuel delivery to all cylinders; a malfunction can produce rough running, power loss, or risk of cylinder damage.
Analogy
Think of a garden hose splitter that takes one supply line and feeds several sprinklers equally — the flow divider does the same job for fuel going to each cylinder.
Intuition Check
A flow divider does not decide how much total fuel the engine needs. It receives fuel that has already been measured and divides that fuel among the cylinders.
Example Sentence 1
The mechanic traced the rough idle to a partially blocked flow divider that was starving one cylinder of fuel.
Example Sentence 2
Uneven exhaust gas temperatures prompted the pilot to have the flow divider examined for proper distribution.