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Short velocity stacks on a 302 cu.in. Ford FE engine in the tight confines of a Ford GT-40. A velocity stack, trumpet, or air horn [1] is a typically flared, parallel-sided tubular device fitted individually or in groupings to the entry of an engine's air intake system to smooth high speed airflow, and allow engine intake track tuning to incorporate pressure pulses created by its internal ...
The smaller components of the carburetor are either attached to, are a part of the major portions, or are remotely mounted, depending on the engine application. The boost component is mounted on the inlet side of the throttle body. It measures air density, barometric pressure, and air flow into the carburetor. It is mounted directly in the air ...
A 'power valve', which is a spring-loaded valve in the carburetor that is held shut by engine vacuum, is often used to do so. As the airflow through the carburetor increases the reduced manifold vacuum pulls the power valve open, allowing more fuel into the main metering circuit.
In the conventional carburetor, a venturi in the airflow creates a lowered pressure and this is enough to encourage the flow of fuel through the metering jets. The flow rate is critically sensitive to the fuel pressure at the jet, i.e. the hydrostatic head owing to the depth of fuel between the jet and the float level.
An updraft carburetor is a type of carburetor in which the air flows upward within the device. [1] Other types are downdraft and sidedraft. [2] An updraft carburetor was the first type in common use. [3] In it air flows upward into the venturi to mix with the fuel. [2] An updraft carburetor may need a drip collector. [4]
The Carter Carburetor Company was an American manufacturer of carburetors, primarily for the automobile industry. It was established in St. Louis , Missouri, in 1909 and ceased operation in 1985. Founder William Carter started experimenting with automotive carburetors while running a successful bicycle shop.
AMAL was a British engineering company servicing the motorcycle and other light-engineering motor industries between 1927 and 1993 [1] based in Birmingham, England. [2]AMAL is a British carburettor trademark.