Pengaruh Penambahan Langkah Kerja terhadap Unjuk Kerja Motor Bakar

Abstract

The duration of fuel-air diffusion in the 4 stroke combustion engine is relatively short, which is 0.02 seconds at 3000 rpm so that at high rotation the level of homogeneity of the fuel-air mixture becomes low. The addition of steps in a 4 stroke combustion engine to a 6 stroke combustion engine is expected to increase the duration of mass diffusion and temperature in the air-fuel mixture. So that the homogeneity of the air-fuel mixture increase and more expansion power of the combustion results. Engine performance testing by reducing the engine speed of 400 rpm at the initial condition of the throttle valve opening by 30% then the results of the performance of the two motors will be compared. The test results show an increase in power and torque in a 6 stroke combustion engine compared to a 4 stroke combustion engine at the same rotation conditions of 15%. As for the value of the specific fuel consumption effective (SFCe), thermal efficiency, and exhaust gas emissions of Hydrocarbon (HC) 4 stroke fuel is still better.

Keywords

• diffusion
• homogeneity
• combustion engine
• four stroke
• six stroke