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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) Mechatronics, Electrical Power, and Vehicular Technology MESIN Majalah Ilmiah Pengkajian Industri
Rizqon Fajar
The Agency for The Assesment and Application of Technology
Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Journal : MESIN

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PENENTUAN KUALITAS PELUMASAN MESIN Fajar, Rizqon; Yubaidah, Siti
MESIN Vol 9, No 1 (2007): Bahan Bakar Alternatif
Publisher : Program Studi Teknik Mesin, Universitas Trisakti

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The monitoring on commercial engine lubricants have resulted that the properties ofmost lubricants (synthetic, semi synthetic and mineral type) have met the requirements specifiedforcommon engine oil. However, significant variations have been found in the properties such asviscosity, viscosity index and additive contents (anti oxidant &detergent). Too high in viscosity willgive difficulty during engine staring and increases the fuel consumption. Meanwhile if the viscosity istoo low this will create more risks for engine damage (metal to metal contact). Some of the samplesfrom synthetic, semi synthetic and mineral lubricants have shown that the additives contents (antioxidant, antiwear anddetergent) are too low. Lower additive contents means that the service life ofthelubricants will be shorter than the usual recommendation. Most of mineral lubricants are too highviscosity at normal temperature of engine operation (lOffC). This will decrease the efficiencyfor theengine operations (highfuel consumption).
Uji Ketahanan 100 Jam Mesin Genset 27 KW Menggunakan Coco-Diesel Fajar, Rizqon; Haryono, Ihwan; Kuddin, Misbah
MESIN Vol 9, No 3 (2007): Ocean Thermal Energy Conversion (OTEC) untuk "Pulau-pulau Kecil"
Publisher : Program Studi Teknik Mesin, Universitas Trisakti

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Durability Test of Small Diesel Engine 27KW Using Coco-Diesel Today, government isconcern on using vegetable oil as alternative fuel which is environment friendly. Biofuel should betransformed to ester compound before used on diesel engines. It is caused that ester has similar physicalproperties comparing to the mineral oil (solar). This paper presents a durability test results on a dieselengine which used ester compoundfrom coconut diesel (coco methyl ester. The test was done for 100hours. The engine test used was a single cylinder Mitsubishi ™with capacity 27 HP. The engine wascoupled by generator electricity. During durability test the generator was loaded by heaters 10 KW. Fuelconsumption, opacity, exhausts gas temperature andoil condition waschecked at 0, 50 and100hours.Keywords: coco-diesel, specificfuel consumption, opacity, viscosity
EFEK KOMPOSISI BIODIESEL TERHADAP PARAMETER KUALITAS BAHAN BAKAR DAN UNJUK KERJA MESIN (PERBANDINGAN BIODIESEL SAWIT DENGAN BIODIESEL JARAK CASTOR) Fajar, Rizqon; Suryantoro, Taufik; Sugiarto, Bambang; Setiawan, Frans
MESIN Vol 8, No 1 (2006)
Publisher : Program Studi Teknik Mesin, Universitas Trisakti

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Abstract

Biodiesel is the mono alkyl esters oflong chain fatty acids derivedfrom renewable lipid sources.Biodiesel as asubstitute ofpetroleum dieselfuel has some advantages: itproduces cleaner exhaust gas, betterin lubrication, and doesnt need engine modification. This paper presents the results ofresearch concerningthe effect ofdifferentfatty acid composition ofbiodiesel onfuel quality and its performance in diesel engine.For this purpose three different fuel sample were tested, Indonesian diesel fuel (solar) as a reference,blending solar 70%- oil palm methyl ester 30%(B-3 sawit) and blending ofsolar 70%- castor methylester 30 %(B-30 castor) . All ofthese fuels are tested using Hydra diesel engine, single cylinder indirectinjection (IDI). The test results shows that the performance (peak pressure in the cylinder) ofthreefuels arequite similar, however the two biodiesel blends show lower emission in smoke, hydrocarbon, and CO atdifferent injection timings and different loads. For NOx emission, it is slightly higher. B-30 castor containsmore unsaturatedfatty acids than B-30 sawit and therefore produced higher emission bfNOx. Beside, castormethyl ester contains an extra hydroxyl group in ricinoleic acid that probably leads to lower smoke andhydrocarbon compared to B-30 sawit. It is still aquestion that CO emission ofB-30 castor higher than ofB-30sawit. Research in the effect of chemistry andfatty acid composistionof biodiesel on the emission areneeded to be able describe mechanism ofCO, hydrocarbon andNOxformationfrom biodiesel.
Co-Authors Atmaja, Sigit Tri Bagus Anang Nugroho, Bagus Anang Bambang Sugiarto Budi Rochmanto Erwandi Erwandi Fahmi, Faisal Frans Setiawan, Frans Hari Setiapraja Ihwan Haryono, Ihwan Misbah Kuddin, Misbah Rahuna, Daif Siti Yubaidah, Siti Taufik Suryantoro, Taufik Wibowo, Cahyo Setyo