Carburetors

The carburetor is used to break up and mix the fuel in a suitable composition for combustion. It is device used for atomizing and vaporizing the fuel and mixing it with air in varying propositions. Everyone knows what is vaporizing but in atomizing the fuel is broken down in to smaller particles such that each particle is surrounded by air. The function of the carburetor is to supply the mixture in correct proportion under varying temperature, speed and load on the engine. If a vehicle needs to run in a high speed the air to fuel mixture must be high. This ratio varies for different terrains and for idling. The carburetor also supplies a fine spray of petrol and produces a homogenous mixture of air and fuel. There are different kinds of carburetors and there classification is based on the direction of flow of the fuel, the metering system, and type of power system. Carburetors are effective in their function when they are used in plains. But they show difficulties in working with higher altitude areas. When the altitude increases the atmospheric pressure and air density decreases thus less air is available for mixing with the fuel. Also weather influences the working of the carburetor because varying temperature affects the viscosity of the fuel.