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Harmen Burhanuddin
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Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Prestasi Lampu Petromax Berbahan Bakar LPG Harmen Burhanuddin
JURNAL MECHANICAL Vol 2, No 2 (2011)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung

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Abstract

In order to decrease subsidy cost of kerosene consumption, Indonesian government right now proposes to convert kerosene to LPG. Consequently, the price of kerosene is expensive in society. LPG can be alternatively used as fuel for the petromax lamp. The use of LPG for the petromax lamp fuel is strongly recommended for sidewalk food sellers as source of light at night if the electricity source is not available. Therefore, it is important to investigate some advantages of the use of LPG as replacing of kerosene for the petromax lamp. The performance of the petromax lamp using LPG as fuel had been carried out with parameters: rate of fuel consumption and light intensity, representing to the need of energy consumption. In the view of economic, the performance of the petromax lamp using LPG was also compared with the performance of petromax lamp using kerosene.  The results show that the use of LPG is more clearly efficiency than those of use of kerosene. The fuel energy needed by the petromax lamp to generate lighting is around 224.87MJ/h for kerosene and 213.24 MJ/h for LPG. The energy consumption of LPG is decreased by a factor of 1.05. Economically, the comparison of the price between kerosene and LPG is very significant. The price of kerosene consumption per hour was approximate Rp.941.00, whereas the price of LPG consumption per hour was approximate Rp. 368.00. This shows that if the petromax lamp is operated using LPG for 6 h, the seller foods can save around of Rp 3,438.00. Keywords: petromax lamp, kerosene, LPG, energy consumption.
Modifikasi Kapasitas Cylinder Pada Sepeda Motor 100 CC Menjadi Kapasitas 125 CC Harmen Burhanuddin
JURNAL MECHANICAL Vol 4, No 2 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung

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Motorcycle modification has been done many times to new motorcycles, such as motorcycle 125cc that was first released in 2004 and old motorcycles, such as motorcycle 100cc that was first released in 1997. motorcycle 100cc with engine base 100cc is very popular in the market. But, there are many weaknesses, for example: the performance and the fuel efficiency of motorcycle 100cc are lower than of Honda Supra X 125cc.There are several techniques to increase the acceleration and power of a motorcycle. One of them is increasing the volume of the cylinder capacity and increasing the compresion ratio. But the impacts which were resulted in the proccess of modofication, suck as the increase in fuel consumption and the decrease in the motorcycle lifetime.In this research, the researcher modified the cylinder capacity on motorcycle 100cc in to the same capacity as motorcycle 125cc by using cylinder block cylinder, cylinder head, crankshaft and tensioner from motorcycle 125cc. And then it was tested by as: testing of fuel consumption in stationary condition, testing of fuel comsumption in tandem and without tandem, testing of acceleration, and testing of speed and machine maximum rotation.The result of the modification shows that the modification has decreased the fuel consumption up to 19.63% in the stationary condition; in the rotation at 1400 rpm and 4000 rpm. For fuel consumption testing, when there has tandem or not, the modification has decreased the fuel consumption up to 27.19%. In the acceleration test of 0-80 km/h, the modification has decreased time allocated to accelerate at 3.91 seconds or about 20.03%. In the acceleration test of 60-80 km/h, the modification has decreased time allocated to accelerate at about 37%. And in the testing of maximum speed and rotation, the result shows that the modification has increased the speed at about 3.7% and increased the maximum rotation at about 1.66% from the original condition of motorcycle 100cc.Keywords: Modified, efficiency of the engine, the fuel efficiency.
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