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Although carburetor technology in automobiles reached a very high degree of sophistication and precision, from the mid-1980s it lost out on cost and flexibility to fuel injection. Simple forms of carburetor remain in widespread use in small engines such as lawn mowers and more sophisticated forms are still used in small motorcycles.
Air from the atmosphere enters the carburetor (usually via an air cleaner), has fuel added within the carburetor, passes into the inlet manifold, then through the inlet valve(s), and finally into the combustion chamber. Most engines use a single carburetor shared between all of the cylinders, though some high-performance engines historically ...
In 1944, Claude Poulan was supervising German prisoners cutting pulpwood in East Texas. Poulan used an old truck fender and fashioned it into a curved piece used to guide the chain. The "bow guide" now allowed the chainsaw to be used by a single operator. [16] [citation needed] McCulloch in North America started to produce chainsaws in 1948 ...
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Poulan was founded as Poulan Saw Co. in 1946 by chainsaw pioneer Claude Poulan in Shreveport, Louisiana.Purchased in late 1950s or early '60 by the Beaird Company, also of Shreveport, it was known as Beaird-Poulan.
Pratt & Whitney R-4360 Wasp Major. 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 ...
Carburetors are provided with a float chamber to provide a constant hydrostatic head of fuel above the carburettor's metering jets, thus a constant pressure. The float chamber itself does not vary the pressure according to demand, but it does vary the supply flowrate with demand, to keep this pressure constant.
Carburetor heat (usually abbreviated to 'carb heat') is a system used in automobile and piston-powered light aircraft engines to prevent or clear carburetor icing. It consists of a moveable flap which draws hot air into the engine intake. The air is drawn from the heat stove, a metal plate around the (very hot) exhaust manifold.
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