float needle

float needle
A needle in the carburetor which is activated by the level of fuel in the float bowl. As the level drops, the needle lifts and allows more fuel to enter the bowl

Dictionary of automotive terms. 2015.

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  • needle — [1] An indicator on a dial, instrument, or gauge. [2] A thin rod or small tapered rod used to open or close a hole. See bury the needle float needle jet needle metering rod needle and seat needle bearing needle cage …   Dictionary of automotive terms

  • float level — [1] Height of the fuel in the carburetorfloat bowl. [2] The specific float setting that will produce the correct fuel level. [3] The float position at which the float needle closes against its seat, shutting off the fuel inlet valve to prevent… …   Dictionary of automotive terms

  • needle and seat — A pair of items in a carburetor. The seat is usually a brass plug with a specially shaped hole to accommodate the needle which is a shaft with a pointed end. When the needle is fully seated in the seat, no gasoline can enter the float bowl. As… …   Dictionary of automotive terms

  • Needle valve — Giffard steam water injector (B needle valve). A needle valve …   Wikipedia

  • float carburetor — Carburetor Car bu*ret or, Carburettor Car bu*ret tor, n. 1. (Chem.) An apparatus in which coal gas, hydrogen, or air is passed through or over a volatile hydrocarbon, in order to confer or increase illuminating power. [Written also… …   The Collaborative International Dictionary of English

  • float-feed carburetor — Carburetor Car bu*ret or, Carburettor Car bu*ret tor, n. 1. (Chem.) An apparatus in which coal gas, hydrogen, or air is passed through or over a volatile hydrocarbon, in order to confer or increase illuminating power. [Written also… …   The Collaborative International Dictionary of English

  • float — i. The horizontal distance traveled by an aircraft from the moment of a flare for landing to the actual touchdown. ii. A buoyant structure or component fitted to an aircraft to enable it to be supported in water or to stabilize it in water. See… …   Aviation dictionary

  • float — [1] A small hollow tank which is more buoyant than the liquid in which it is immersed. In a carburetor it operates the valve (needle and seat) which controls the amount of fuel entering the carburetor. In the fuel tank, it indicates the amount of …   Dictionary of automotive terms

  • float-type carburetor — A type of carburetor used in reciprocating engines. In this carburetor, the fuel metering force is produced by a float operated needle valve that keeps the fuel level a constant distance below the edge of the discharge nozzle …   Aviation dictionary

  • needle valve — [1] A valve with a needle shaped pin that can be moved to control the flow of a fluid. [2] The valve, in a carburetor, which controls the amount of gasoline flowing from the pump to the float chamber …   Dictionary of automotive terms

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