The carburetor is one of the components in the power supply system of an internal combustion engine. Its working function is to prepare a combustible mixture by mixing liquid fuel with air and supplying it to the combustion chamber of the engine.
Instructions
Step 1
The device of the simplest carburetor includes two functional elements: a float chamber and a mixing chamber. The fuel flows through a tube into the float chamber, where the float is located, which is touched by the shut-off needle of the float valve. When the engine is running, fuel is consumed and the level in the chamber decreases. The float is lowered and the valve opens to supply more fuel. When a certain level is reached, the float valve closes again.
Step 2
The fuel then enters the atomizer through the nozzle, and from there into the mixing chamber, where the outside air is sucked in. The resulting mixture is distributed through the exhaust pipe to the engine cylinders.
Step 3
Air is forced into the center of the mixing chamber through a diffuser. When the engine is operating at the end of the spraying phase, a vacuum is created, which is necessary for the outflow of fuel from the float chamber. The level of fuel supplied to the engine cylinder is controlled by the throttle valve. The area of the damper can vary depending on the operating mode of the engine. This function is controlled by the driver by pressing the gas pedal.
Step 4
There is a special knob on or under the dashboard that can also control the throttle. It is often called "suction" among the people. By pulling the handle, the driver closes the flap, which limits the penetration of air into the mixing chamber, which increases the vacuum. As a result, the suction of fuel from the float chamber increases. In a situation of lack of air for the engine, a saturated mixture of fuel is prepared, which is necessary for a cold start of the engine.
Step 5
Thus, the carburetor operates economically at medium loads, and jerky advancement increases fuel consumption, since a sharp press on the gas pedal creates a demand for a rich fuel mixture for the engine.
Step 6
It should be noted that even the simplest carburetor is a rather complex technical device. The purpose of his work is to prepare fuel for the engine by mixing gasoline and air in one ratio or another. The quality of the mixture is determined by the operating mode set to the motor.
Step 7
Despite the seeming simplicity of the device, the carburetor is quite difficult to repair yourself. It is better to entrust the troubleshooting of this device to a specialist. Often a carburetor breakdown requires a complete replacement.
