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Jurnal Ilmiah Teknik Mesin
Published by Universitas Lampung
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Arjuna Subject : -
Articles 142 Documents
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PEMBUATAN SISTEM OTOMASIUNTUK PENGATURAN MEKANISME KERJA MESIN CETAK KERUPUK MENGGUNAKAN MIKROKONTROLER ATMega Sukendar, Aang; Martinus, .; Tanti, Novri
Jurnal Ilmiah Teknik Mesin FEMA Vol. 1 No. 1 (2013)
Publisher : FT UNILA

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Developments in science and technology has increased very rapidly. One is the industrial field. At home industry (home industry) required a more sophisticated production system in order to maximize production. Engine control system working mechanism of crackers is an idea to create an automated system on a machine that makes in terms of operation. Has created a working mechanism controlling printing using Microcontroller ATMega 16 crackers. The system uses a microcontroller to control the relay drivers to switch on or switch off the AC motor. Optocoupler sensors and limit switches as an input to set the working mechanism of the machine automatically.The test results show that the driver relays are used to control the mechanism of action machine can work well. Similarly optocoupler sensor and AC motors as propulsion machinery.Keywords: Home industry, printing machines crackers, driver relay, optocoupler, limit switch, microcontroller.
PENGARUH PENAMBAHAN ZAT ADITIF ALAMI PADA BENSIN TERHADAP PRESTASI SEPEDA MOTOR 4-LANGKAH Saputra, Wahyu Eko; Burhanuddin, Harmen; Susila, M.Dyan
Jurnal Ilmiah Teknik Mesin FEMA Vol. 1 No. 1 (2013)
Publisher : FT UNILA

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The quality fuel affects combustion because the fuel quality will get better combustion. Therefore, it is necessary to improve the quality of the fuel to produce combustion. Such an increase in the octane rating of the fuel can result in increased good quality of the fuel. One method used is the addition of natural additives in the fuel. Tests were performed using a motorcycle test engine 100 cc 4-stroke is running test (road test and acceleration), and stationary testing. The test road test conducted by a distance of 10 km with an average speed of 50 km / h test aims to get the value of fuel consumption. Furthermore, using the acceleration test speed 0-80 km / h and 40-80 km / h which aims to get the fastest acceleration time. Then the stationary testing done on rotation 1.000 rpm and 3.000 rpm with a 5-minute aims to get the value of fuel consumption at rest. This test uses a natural variation in the dose of the gasoline additive used is 1:4, 1:6, 1:8, and 1:10. On testing fuel consumption with the distance 10 km can be seen that the concentration of 1:6 is the best concentration that can reduce fuel consumption by 23,31% (136 ml), compared with natural gasoline without additives (177,333 ml). Average time acceleration 0-80 km / h resulted in the concentration of the best natural additives 1:4 that is with an average acceleration of 10,847 seconds (20,69%). In testing acceleration 40-80 km / h obtained for the concentration of 1:8 with an average acceleration of 6,993 seconds (21,83%). Tests of stationary fuel consumption at 1,000 rpm for 5 minutes in to the best performance at a concentration of 1:8 that is 33,91% (12,667 ml) whereas at 3.000 rpm stationary best performance is obtained at a concentration of 1:10 30,71% (14,334 ml).Keywords : fuel, natural additives, engine performance.
STUDI POTENSI PEMBANGKIT LISTRIK TENAGA MIKROHIDRO (PLTMH) DI SUNGAI CIKAWAT DESA TALANG MULIA KECAMATAN PADANG CERMIN KABUPATEN PESAWARAN PROPINSI LAMPUNG Sulistiyono, .; Sugiri, Agus; Risano, A.Yudi Eka
Jurnal Ilmiah Teknik Mesin FEMA Vol. 1 No. 1 (2013)
Publisher : FT UNILA

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Electric was the vital energy and needed by community for all activity as lighting, radio, television (information), industry , etc. Although aspecialy the urban community was needed this energy and a little rural community was needed. There was several isolated villages in Pesawaran sub province , no electricity by PLN. For this villages goverment would supply the elerctric energy and build microhydro electric plant. The purpose of this with title “Feasibility Study Micro Hydroelectric Power Station (PLTMH) at cikawat river in talang mulia village pesawaran sub province” is to contributed in hydro turbine management and to planning a micro hydroelectric power station that can be used and applied for a better life The research was carried out by using a very simple method is to use a floating object method to measure discharge and plastic hose method for measuring head.Based on the field data, (Head efektif = 9. 35m and water debt = 0,1029 m3/s) the crossflow Turbine can produce energy 7.07 kW. Bellow to the data above it is result that the cikawat river can be set a micro hydro electric power.Keywords : micro hydroelectric power station, water dept, crossflow Turbine.
PENGARUH TEMPERATUR DAN WAKTU PEMANASAN ZEOLIT PELET TEKAN PADA AKTIVASI BASA-FISIK NaOH DAN KOH TERHADAP PRESTASI MOTOR DIESEL 4-LANGKAH Korin A, Novian; Wardono, Herry
Jurnal Ilmiah Teknik Mesin FEMA Vol. 1 No. 1 (2013)
Publisher : FT UNILA

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Natural Zeolite is one of alternative adsorbents. Zeolite should be firstly activated to get zeolite with high adsorption capacity. The ability of chemical-physical activated zeolite in saving fuel consumption of a diesel engine proven by Herry Wardono using NaOH and KOH with normality of 0,75N. The mass of pressed pelletized zeolite used was 100 grams and with thermal activation at 200°C for 2 hour. In this research, zeolites were activated by using thermal activation at 150°C for 1 hour and 2 hours, and 200°C for 1 hour, these pellets were packed in a frame of 50 grams, 100 grams and 150 grams, and put them in the air filter of a diesel engine for each mass, so combustion air was firstly contacted with zeolites before entering to combustion chamber. The experiments were operated at engine speeds of 1500, 2000, 2500, 3000 rpm. The results showed that used of these thermal-Alkali activated zeolites could in increas the diesel engine performance. Use of 150 grams of KOH 0,75N activated zeolite that was thermally treated at 150oC for 2 hours could reduce the highest fuel consumption that was 0,0225 kg/kWh (11,211%), and as big as 0,0218 kg/kWh (10,87%) for use of 150 grams of NaOH 0,75N activated zeolite that was thermally treated at same condition. Meanwhile, the highest increase of brake power occurred for use of 100 grams of NaOH 0.75N activated zeolite that was 0,054 kW (7,667%), and as big as 0,0477 kW (6,849%) for use of 100 grams of KOH 0.75N activated zeolite. The results occurred at the engine speed of 1500 rpm.Keywords: thermal activation of Zeolite, Combustion air Treatment, Diesel Engine Performance
STUDY OF MICRO HYDRO ELEKTRICAL POWER PLANT at WAY NGISON RIVER TRIHARJO KEBAGUSAN VILAGE GEDONG TATAAN SECTOR DISTRICT OF PESAWARAN Bagus W, Subekti; Sugiri, Agus; Risano, A.Yudi Eka
Jurnal Ilmiah Teknik Mesin FEMA Vol. 1 No. 1 (2013)
Publisher : FT UNILA

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Abstract

Electricity become one of the basic needs of industrial and human life. It is shown by the electrical peripherals and industrial machineries which consumes a lot of energy. By the increasing of human population and the electricity consumtion turbine is the most common that used to produce electricity using the renewable energy resources such as hydro, wind, sea wave which it can solve the problem of increasing electricity consumtion. renewable energy sources. This source is readily used from many creeks and rivers that has a high enough flow and water debt which easily found surround us. The purpose of this with title “Feasibility Study Micro Hydroelectric Power Station (PLTMH) Using Cross fllow Turbine at Triharjo desa Kebagusan Kecamatan Pesawaran Bandar Lampung” is to contributed in hydro turbine management and to planning a micro hydroelectric power station that can be used and applied for a better life. Based on the field data, (Head = 12 m and water debit = 0,0584m3/s) the Cross Fllow Turbine can produce energy 5,10 kW. Bellow to the data above it is result that the Way ngison Dusun triharjo Desa Kebagusan dam can be set a micro hydro electric power.Keywords : micro hydroelectric power station, water dept, crossflow Turbine.
PERANCANGAN ALAT UJI GESEKAN ALIRAN DI DALAM SALURAN Siregar, Jhon Fitter; Sinaga, Jorfri B
Jurnal Ilmiah Teknik Mesin FEMA Vol. 1 No. 1 (2013)
Publisher : FT UNILA

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Mechanical Engineering Department, University of Lampung has been established since 1998 and implementation of the learning process at this Department supported by ten laboratories. One of these laboratory is laboratory of Mechanical fundamental phenomena. But testing equipment available until now in this laboratory is still lacking. In this paper is given, design an analysis of test result of friction flow in channel testing equipment, with channels used are: circle, triangel, square with hydraulic diameter of Dh . Results of testing equipment show relationship between friction factor f and Reynolds number close to the graph on Moody diagram in the textbook of fluid mechanics. That means, this friction flow in channel testing equipment can be used to support laboratory work of mechanical fundamental phenomena in the Mechanical Department Engineering, University of Lampung.Keywords: Design, friction factor, laboratory work, mechanical fundamental phenomena.
Cover Jurnal FEMA Vo.1 No.1 Januari Tahun 2013 Halaman Sampul, Cover
Jurnal Ilmiah Teknik Mesin FEMA Vol. 1 No. 1 (2013)
Publisher : FT UNILA

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Sampul Cover Jurnal FEMA Vol.1 No.1 Januari 2013
Cover Jurnal FEMA Vol.1 No.2 April Tahun 2013 Halaman Sampul, Cover
Jurnal Ilmiah Teknik Mesin FEMA Vol. 1 No. 2 (2013)
Publisher : FT UNILA

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Jurnal FEMA Jurusan Teknik Mesin Universitas Lampung Edisi Vol 1 No.2 Tahun 2013 diterbitkan pada 10 April 2013, dengan 10 Penulis Jurnal.
Pengaruh Variasi Temperatur dan Derajat Keasaman (pH) Air Pencucian Pada Aktivasi Zeolit Pelet Terhadap Prestasi Mesin Diesel 4-Langkah Pandapotan, Chandra Winata; Wardono, Herry
Jurnal Ilmiah Teknik Mesin FEMA Vol. 1 No. 2 (2013)
Publisher : FT UNILA

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One of efforts to save fuel consumption can be done by using thermal-acid activated zeolite as adsorbent for water vapor and nitrogen. Herry Wardono has proved that the value of concentration of 0.3 N and 0.5 N in the chemical activation can save specific fuel consumption. The best result occurred in the use of thermal-chemical activated zeolite. In this research, thermal activation temperatures used were 150 0C and 200 0C respectively for 1 hour. Variations of washing water pH were also performed on the 4.5, 5.5 and 7. The results showed this thermal activation of 200 0C on activator HSO24 0.3 N and HCl 0.3 N can save fuel by 5.350% and 7.811% respectively. Then the pH value of 7 gave the best fuel consumption savings those were of 5.964 % and 7.175% for use of HSO 0.5N24 and HCl 0.5N. This result occured at low speed (1500 rpm).Keywords : adhesive pelletize zeolite, thermal activation, effect of washing water pH
PERENCANAAN PENYEDIAAN ENERGI DI WILAYAH LAMPUNG MENGGUNAKAN PERANGKAT LUNAK LONG-RANGE ENERGY ALTERNATIVES PLANING SYSTEM (LEAP) Waluyo, Budi; Burhanuddin, Harmen; Martinus, .
Jurnal Ilmiah Teknik Mesin FEMA Vol. 1 No. 2 (2013)
Publisher : FT UNILA

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Lampung province is a region with a strategic location as a gateway entrance and exit of the economy from the island of Java to Andalas or vice versa. Beside of that the potential of vast natural resources enough to serve as the foundation and development capital, including potential energy resources. Energy needs from year to year increased significantly. if fixed transport link between the islands of Java and Sumatra realized as expected energy demand will jump dramatically. Currently, most of the energy supply in Lampung are supplied from other areas such as Java, and other provinces in Sumatra. Therefore, it is necessary to forecast energy supply for several years to get the proper planning of energy supply to meet the energy needs at times to come. In this research study about projected energy supply in the region of Lampung using software LEAP (Long-range Energy Alternative Planning system) version 2008. The study is based on projections of existing energy needs and based on data from existing energy potential in the province of Lampung, such as coal, geothermal, biogas cow dung and buffalo, palm oil biodiesel and bioethanol sugar cane, sweet potatoes and cassava. The results showed that the supply of electricity from 2014 to 2030 was in excess of the electrical energy needs in the area of Lampung because of the operation of geothermal power plants. For biogas sector, projected at the beginning of the year to replace the LPG gas by 12% and at the end of the projection to 8% due to growth in cattle farm and buffalo are very small. For biodiesel sector, provision was 64% at the beginning of the projection, but declined at the end of the projection to 30% due to the growth of oil palm area is very low. In bioethanol sector, from the beginning to the end of the projection is only able to help reduce gasoline consumption by 4%, due to bioethanol are just a mixture so they are less significant. It can be concluded that the new renewable energy which featured in Lampung province are geothermal energy, biogas manure and corn cob gasification.Keywords: energy projection, LEAP model, transformation of energy, renewable energy.

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