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Most small engines use a governor to maintain a constant engine speed under varying loads. Some engines also have a mechanism for the user to adjust the engine speed. Rather than directly controlling the opening of the carburetor throttle, this is usually achieved by adjusting the governor, which in turn regulates the engine speed higher or lower.
The engine can be mounted in the nose, tail, wing or mounted internally on the airframe. The engine can be mounted vertically as well as horizontally. [16] PD style carburetors are for inline and radial engines from 900 to 1900 cubic inches. [16] PT style carburetors are usually found on 1700 to 2600 cubic inch engines [16]
A carburetor (also spelled carburettor or carburetter) [1] [2] [3] is a device used by a gasoline internal combustion engine to control and mix air and fuel entering the engine. [4] The primary method of adding fuel to the intake air is through the Venturi tube in the main metering circuit, though various other components are also used to ...
Briggs & Stratton Corporation is an American manufacturer of small engines with headquarters in Wauwatosa, Wisconsin. Engine production averages 10 million units per year as of April 2015. [2] The company reports that it has 13 large facilities in the U.S. and eight more in Australia, Brazil, Canada, China, Mexico, and the Netherlands. The ...
Choke valves are important for naturally-aspirated gasoline engines because small droplets of gasoline do not evaporate well within a cold engine. By restricting the flow of air into the throat of the carburetor, the choke valve reduces the pressure inside the throat, which causes a proportionally greater amount of fuel to be pushed from the ...
Many small four-stroke engines such as lawn mower engines and electricity generators simply use a draught tube connected to the intake system. The draught tube routes all blow-by gases back into the intake mixture and is usually located between the air filter and carburetor .
While it can affect any carburetor, carburetor icing is of particular concern in piston-powered aircraft, especially small, single-engine, light aircraft. Aircraft powered by carbureted engines are equipped with carburetor heating systems to counter icing. In road vehicles, carburetor icing can occasionally be a nuisance, although some engine ...
The pressure carburetor is the black box on top of the crankcase at the rear of the engine. Pressure carburetors were used on many piston engines of 1940s vintage used in World War II aircraft. They went from being a new design early in the war to being standard equipment on nearly every allied aircraft engine by the war's end.
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