At the time the motorcycle is on the piston in the cylinder to move the suction, suction makes air from outside into the carburetor. Velocity of air flowing through the small spuyer, resulting form the low air pressure, resulting in a space station buoys come up sucked out through a small spuyer.
Gasoline mixed with air ride out into the mist / gas is a mixture of air with gasoline. This gas will enter the combustion chamber in the engine to be burned later. The working principle is similar to the actual carburetor spray insect repellent.
Level of the engine rotation speed can be divided into four phases, namely;
1.Putaran stationary (slow): In this position the handle of the gas does not play or off the gas, the rotation is influenced by the screw and the screw setter setter air gas. When the engine speed is not normal, then the cause is the second adjustment screw that. In this round of work is also a small spuyer or pilot jet, while the main jet did not work. Gasoline just radiates out through the pilot jet to mix with air.
2.Putaran low: At this position the gas handle rotated up to 1 / 8 round, this round is the screw setter influencing air and coakan on skepticism. Pilot jet / small spuyer still working for the emitting gas, while large spuyer / main jet emitting gasoline but still participate in smaller amounts.
3.Putaran medium: In this round the handle position of the gas in round 1 / 8 to 3 / 4, which affects the rotation is the position of the needle coakan skepticism and skepticism. In this round spuyer large or main jet emits a lot more work stations, while a small spuyer emit less gas.
High 4.Putaran: Position the gas handle on lap 3 / 4 to full, the effect is the large hole big spuyer / main jet. At this time the emitting gas is spuyer large or main jet. While small spuyer emitting gas does not work.
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Carburetor is a device that mixes air and fuel for an internal combustion engine.Carburetors are still used in small engines and in older cars or as they are designed specifically for stock car racing. Most cars produced in the early 1980s have been using computerized electronic fuel injection. The majority of motorcycles still use carburetors due to lighter and cheaper, but in 2005 has introduced many new models with fuel injection.
Working Principle
Carburetor basically works using Bernoulli's principle: the faster air moves, the smaller its static pressure but higher its dynamic pressure. The gas pedal on the car actually does not directly control the magnitude of the flow of fuel into the combustion chamber. Actual gas pedal control valve in the carburetor to determine the amount of air that can flow into the combustion chamber. The air moves in this carburetor that has a pressure to attract and fuel into the combustion chamber.
Most machines have only one fruit berkarburator carburetor, but there also uses one carburetor for each cylinder that is owned. Even had a trend modification motorcycles in Indonesia use of multi-carbu (many carburetors) but usually it is only used as decoration without any technical function. Early generation engines using carburetors upward flow (updraft), where the air enters through the bottom of the carburetor and then out through the top. The advantage of this design is to avoid flooding the engine, because the excess liquid fuel will spill out directly and not through the carburetor into the intake mainfold; Another advantage is the bottom of the carburetor may be connected with the oil channels so there is little oil that go into the air stream and used to wash the air filter; but by using an air filter made of paper using the washing of this oil was no longer necessary today.
Beginning in the late 1930's, carburetor flow downward (downdraft) and flow laterally (sidedraft) began popouler used for automotive
Currently Operates
At all times the operation, the carburetor should be able to:
* Set the amount of airflow into the combustion chamber
* Distributing the fuel with the right amount in accordance with the flow of air enters the combustion chamber so that the ratio of fuel / air is maintained.
* Mixing of air and fuel Airan flat and perfect
The above items would be easy to do if only gasoline and air is an ideal fluid; but in fact, by their nature, namely the existence of viscosity, fluid drag force, fluid inertia, and so karbrator become very complex in overcoming this situation is not ideal. Also, the carburetor must remain capable of producing a mixture of gasoline / air right in any circumstances, because the carburetor must operate in temperature, air pressure, engine speed, and centrifugal force are very diverse. Carburetor must be capable of operating in a state:
* Start the engine is cold
* Start in hot conditions
* Idle or running at low speed
* Acceleration when suddenly opened the gas
* High-speed with a fully open gas
* Speed is stable with a partially open gas in a long time
Modern carburetors also be able to suppress the amount of vehicle emissions
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