Rancang Bangun Exhaust Pipe Fuel Preheating System (EP2FS) Serta Uji Performa dan Analisis Efisiensi Pembakaran Engine


  • azamataufiq budiprasojo Politeknik Negeri Jember
  • Irawan A


The Exhaust Pipe Preheated Fuel System (EP2FS) is a fuel preheating system that utilizes wasted heat from the muffler. Fuel heating aims to improve the homogeneity of fuel and air mixtures to improve the combustion process in the engine. Making EP2FS requires careful design and calculation because the fuel temperature should not exceed 60 oC so as not to evaporate. Design and calculation, using heat transfer theory of helical heat exchanger will be used . A Prototype of  The Exhaust Pipe Preheated Fuel System will be applied in motor vehicles to be tested. The value changes of flue gas procentage, combustion efficiency, power, torque and acceleration will be the purpose in this research. The Result of this research are from the calculations known to make EP2FS copper pipes are required with an outer diameter of 9.5mm and an internal diameter of 8.3mm and a length of 40cm.The insulator are added to the outer of the coil to prevent heat lost. The number of windings is 2.5 loops. The average fuel temperature out of EP2FS is 59.7 oC. Increased power and torque on the engine using EP2FS is 10% at low engine speed and 1.5% at high engine speed. The exhaust gas composition of EP2FS vehicles is measured better than standard. Use of EP2FS can reduce emissions. Significant differences in emissions are in Carbon Monoxyde (CO) gas which is decrease 40% from standard. The combustion efficiency obtained from the use of EP2FS is increased by 6% from standard.


Keywords— Performance, Preheated Fuel, Efficiency.



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