PENGARUH MAIN JET DAN PILOT JET PADA VARIASI PUTARAN MESIN TERHADAP EFISIENSI BAHAN BAKAR

For vehicles still use carburetors can attempt to save fuel, by changing the size of the pilot jet and main jet. Carburetor serves to mix fuel and air so flammable. The mixture must meet certain ratio expressed in units of weight. Gasoline should be able to burn their full in rung fuel to generate great power on the machine. Comparing the air and fuel in theory is 15: 1, which is 15 for air and one for gasoline. But in fact, the engine requires a mixture of air and fuel in different proportions depending on the temperature, engine speed, load and conditions lainnya.Untuk meet its needs, the carburetor there are several systems, namely: buoy system, solenoid, choke system, acceleration system, thermostatic valve, PCV system, fast idle mechanism. When the size of the pilot jet and main jet at lower than standard size, then at low rotation decreases the amount of the difference in fuel consumption significantly, but at medium and high speed rotation decline sinifikan perbedan less fuel consumption. When the size of the pilot jet and main jet in Rev of standard size, the lower the number of rounds when the difference in fuel consumption has increased less significantly, during the middle rounds significant increase in the amount of fuel consumption, and at high speed increase in the amount of fuel consumption is very significant. From the results of the graph needs to be tested again to get better results, then the increase in the size of the main jet pilot jet and its improvement should be the same. Key word : mainjet, pilot jet, effisiensi, karborator