The two-stroke engine is a special kind of internal combustion engine. It completes its power cycle within two power strokes (up and down movement) of the piston throughout its single crankshaft revolution. In this engine, the carburetor blends the air and fuel mixture in the proper ratio and supplies it for combustion. The whole process compiles around the air filter, the carburetor, and the main engine.

Basic function of carburetor

To burn the fuel in the engine, regular supply of the clean air (oxygen) is compulsory. The air filter provides a regular supply of clean air for combustion. It draws air and supplies it to the inlet of the carburetor. It passes through the venture and mixes with the fuel to form vapors (atomization).

 Role of Diaphragm in Carburetor

Meanwhile, the diaphragm on the carburetor draws the fuel from the fuel tank. This increases the pressure of the fuel and allows it to come through the jets. During this operation, the diaphragm works in collaboration with the piston. The piston feeds positive and negative pressure to the diaphragm. This process helps the diaphragm to draw the fuel and deliver it to the jets continuously. Here the point of interest is the whole process of drawing and delivering the fuel occurs in seconds.

Also Read: What is the 2-stroke engine? How is it better than a 4-stroke engine.

The flap valve in the fuel suction line allows only suction of the fuel. The increase in pressure in the diaphragm moves the fuel and needle valve allows it to cross through it. The pressure on the upper part of the carburetor opens the needle valve and it allows the high-pressure fuel to pass through it. Through this process, the engine gets the regular supply of fuel for atomization.

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