Heating Treatment of Air in Combustion Chamber For The Use of Mixture Ethanol and Gasoline Fuel

Abstract

This research was conducted to improve the engine performance with ethanol and gasoline mixture, because from fuel mixture with high concentrate causes value of flash point and heat evaporation fuels becomes higher. To overcome these, the air that entrance in combustion chamber heated up to 26°C, 30°C, 40°C and 50°C, the fuel used are E0, E30 and E50 on 2000 to 8000 rotation. The result of research shows E0 fuel highest torque on 30°C with a value 8,98 Nm had 0,22% increase, E30 fuel highest torque on 50°C with a value 9,5 Nm had 1,05% increase and E50 fuel highest torque on 50°C with a value 7,77 Nm had 0,64% increase. On E0 power is 5,96 kW on 30°C had 0,33% increase, the highest power of E30 is 6,29 kW on 50°C had 1,9% increase and the highest power of E50 on 50°C with a value 4,49 kW had 0,89% increase. For the highest consumption is 2000 rotation, for E0 fuel on 50°C with a value 1,43Kg / Hp.Hour, E30 with a value 1,48 Kg/Hp.Hour on 26°C and E50 with a value 2,03 Kg/Hp.Hour on 26°C, this result shows that air heating treatment can improve the engine performance.

Heating Treatment of Incoming Air Combustion Chamber on the E20 Fuel Mixture

“…From picture 2, it can be seen that the highest torque is generated at the inlet air heating treatment with a temperature of 30°C at a revolution of 6000 with a torque value of 9.004 Nm and experiences a percentage increase of 0.27%, compared to without air heating treatment, this is because air heating can add energy during the combustion process so that the maximum combustion point is reached and for the lowest torque value is found in the inlet air heating treatment with temperature 50°C with a torque value of 8.94 Nm and experienced a percentage decrease of 0.44%, this is because the heating temperature that is too high can cause detonation in the combustion chamber to burn so that the pressure in the combustion chamber during the compression stroke is reduced. The temperature of the air in the combustion chamber greatly affects engine performance because the air temperature can affect the flash point value of the fuel in the combustion chamber, for gasoline fuel has a flash point value of -42°C and for ethanol fuel 12°C [5], so that the use of fuel mixture of ethanol and gasoline requires additional energy in the form of proper air heating so that the combustion process in the combustion chamber becomes homogeneous and burns optimally [8].…”

“…The advantage of ethanol is that it can reduce the value of CO and HC when mixed with gasoline [4]. Based on the problems above to get maximum performance in a gasoline-fueled engine, one of the things that can be done is to warm up the air into the combustion chamber aims to it is expected that the performance of engines with ethanol and gasoline fuel mixture can be better than gasoline engines [5][6] [7]. Therefore it is necessary to obtain the right temperature of the inlet air of the combustion chamber on the mixture of ethanol and gasoline fuel.…”