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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan International Journal of Marine Engineering Innovation and Research Sewagati

Adhi Iswantoro

Departemen Teknik Sistem Perkapalan Institut Teknologi Sepuluh Nopember Surabaya

Author-ID : 3414403

Arts Humanities Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

Published : 15 Documents Claim Missing Document

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Articles

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The Effect of Blend Fuel Waste Plastic and Waste Cooking Oil on Diesel Engine Performance based on Simulation Aguk Zuhdi M. Fathallah; Adhi Iswantoro; A Karomur Roziq F
International Journal of Marine Engineering Innovation and Research Vol 5, No 3 (2020)
Publisher : Institut Teknologi Sepuluh Nopember

Nowadays, polypropylene plastics are very often found and cause various environmental problems. Though it is known that along with polypropylene itself comes from propylene monomers obtained from refining petroleum. Besides the use of waste cooking, biodiesel fuel has many drawbacks, one of which is power and fuel consumption. Mixing polypropylene plastic waste for reuse with waste cooking oil biodiesel is an option. This study uses five variations of fuel, namely HSD, B30, C20, C30, and C40, a combination of HSD, waste cooking, and polypropylene. This research is based on experiments to analyze the impact of using these five variations of fuel on the performance diesel engines based on simulation. The performance of the diesel engine would be measured to SFOC, power, and torque produced by each fuel. Based on the results of the analysis of the performance of the diesel engine performance of C20, fuel can be the most optimum alternative fuel to the substitute B30, producing 6.0 kW of power, 238gr / kWh of SFOC, and 31.7Nm of torque.

The Effect of Mixing Diesel Fuel with Cottonseed Oil and Coconut Oil on The Performance of 4-Stroke Diesel Engine Adhi Iswantoro; Aguk Zuhdi Muhammad Fathallah; Semin Semin; ramdhan febrianto saputra
International Journal of Marine Engineering Innovation and Research Vol 3, No 3 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

research on biodiesel as an alternative fuel has been widely carried out. Such as mixing one type of oil mixed with diesel fuel with a certain composition. In this research, biodiesel was made by mixing two types of oil and then mixed with diesel fuel with a composition of 30:80, where 30% for mixed oil that is cottonseed oil and coconut oil, then 80% for diesel fuel. And then in this research, the composition between cottonseed oil and coconut oil must be found, so that it will get the best composition between cottonseed oil and coconut oil. For comparison in performance between mixed biodiesel with 4 cSt and 6 cSt, and in the mixing process, using mathematical calculation methods, then the mixing results must meet SNI standards (Standard Nasional Indonesia / Indonesian National Standards). In this research, 4-stroke diesel engines with one cylinder were used. From the experiments and data analysis, biodiesel with 6 cSt more powerful, torsion and BMEP better than mixed biodiesel 4 cSt.

The Modification Effect of Piston Crown on Four Stroke One Cylinder Diesel Engine using Biodiesel B30 on Noise Based on Simulation. Beny Cahyono; Adhi Iswantoro; Ilham Rezandhi Akbar
International Journal of Marine Engineering Innovation and Research Vol 5, No 4 (2020)
Publisher : Institut Teknologi Sepuluh Nopember

Piston is one of the important parts in the combustion process in a diesel engine, it consists of two namely the piston head and connecting rod, where the piston head consists of three parts, namely the piston crown, piston rings, and piston pins. This paper wants to prove which is more effective in modifying the TCC piston crown shape on a four-Stroke one-cylinder diesel engine fueled with B-30 in terms of noise. To measure noise, several experiments were carried out. One way is to use an application that can help make measurement easier is to use the simulation. The Simulation can measure the level of noise by using the tools in an application the same as in reality. The piston area is very influential on the combustion process, with the greater piston area, the resulting explosion is greater which results in and produces a high pressure also it is directly proportional to the noise level. After everything is measured, then we compare it with the engine's performance and give maximum results between the level of noise with engine performance. The result is using a piston case 4 (+1) which has a larger area experiencing the highest noise level using B30 Diesel Fuel or High-Speed Diesel (HSD) Fuel. Under load conditions, with a 50% load, the noise level on piston +1 (Case 4) experiences the highest noise level using B30 Diesel Fuel or High-Speed Diesel (HSD) Fuel.

Performance and NOx Investigation on Diesel Engine using Cold EGR Spiral Tube: A Review Semin Semin; Adhi Iswantoro; Fatekhun Faris
International Journal of Marine Engineering Innovation and Research Vol 1, No 3 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

The world has the same problem to reduce emissions. Based the problem, many technologies invented to reduce the Emission. One of them is EGR (Exhaust Gas Recirculation). EGR is the most simpleNOx reduction by circulating potion of exhaust gas return into the combustion chamber. EGR system is often known by the name the hot EGR where exhaust gas circulation process without cooling system. This new Hot EGR system is designed by the addition of cooling system with air-cooled type. So that the circulating of exhaust gas to be cooled in advance in such that the mass of air increases.This research aims to study the performance and a reduction in NOX of diesel engine with EGR using addition of air cooling system. The experiments were used on diesel engine Yanmar TF 85-MHDI

Analysis of Performance, Emission, Noise and Vibration on Single Cylinder Diesel Engine After Installing Dual Fuel Converter-Kit Based on ECU Adhi Iswantoro; I Made Ariana; Muhammad Syuhri
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 1 (2022): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v19i1.44126

Now the demand for fuel oil has increased, this can cause fuel oil reserves to be depleted. To reduce the use of fuel oil, alternative energy is needed. One alternative energy that can be used to reduce fuel oil consumption is LPG (Liquid Petroleum Gas). The use of alternative fuels for LPG in diesel engines is done by converting diesel engines into dual fuel. This research aims to determine the effect of using dual fuel that are LPG-Diesel fuel on engine performance including power, torque, fuel consumption, emissions, vibration and noise. The research was conducted using a Yanmar TF 85 MH engine at 2000 RPM engine speed with variations in loading of 1000, 1500, 2000, 2500, and 3000 watts, and dual fuel with variations in injector openings of 3ms, 4ms, 5ms. Based on the research results, the use of LPG in dual fuel system with installing ECU (Electronic Control Unit) converter-kit, can replace diesel fuel oil consumption up to 93%. In the use of dual fuel there is an average decrease in power and torque of up to 1.95% if using only diesel fuel have average power up to 2.32 kW and torque up to 11.09 Nm. When using dual fuel there is a decrease in specific fuel oil consumption by up to 44% when using only diesel fuel have average fuel oil consumption up to 414.15 g/kWh. The maximum NOx emission produced is 1.83 g/kWh for a 3ms gas injector opening, 1.48 g/kWh for a 4ms gas injector opening, and 1.81 g/kWh for a 5ms injector opening. The maximum vibration generated is 33.2 m/s² for a 3ms injector opening, 31.4 m/s² for a 4ms injector opening, 27.46 m/s² for a 5ms injector opening, and when used only Diesel Fuel is 32.8 m/s2. The maximum noise generated is 92.33 dBA for 3ms injector opening, 92.43 dBA for 4ms injector aperture, 93.20 dBa for 5ms injector aperture, and 91.73 dBa when using diesel oil only.

Analysis of The Injection Pressure Effect on Single Cylinder Diesel Engine Power with Diesel Fuel-Methanol Blend Aguk Zuhdi Muhammad Fathallah; Adhi Iswantoro; Semin Semin; Beny Cahyono; I Made Ariana; Ananda Rizky Budi Pratama
International Journal of Marine Engineering Innovation and Research Vol 7, No 2 (2022)
Publisher : Institut Teknologi Sepuluh Nopember

The use of fossil diesel fuels still produces carbon dioxide emissions (CO2), sulphur dioxide (SO2), hydrocarbon emissions (HC), nitrogen oxide (NOx), and high total particles and carbon monoxide (CO). Moreover, the need for transportation of motor vehicles will always increase every year. The emission of exhaust gases resulting from the combustion process can essentially be reduced by improving fuel quality, the homogeneity of the fuel mixture, and regulating proper combustion. There are several ways to reduce exhaust emissions from diesel engines by providing precise injection pressures. This is done to get the perfect combustion. In addition, improving fuel quality is a way to reduce emissions of exhaust gases. Another one is by adding methanol to the diesel. The addition of methanol can reduce the emission of exhaust gas produced. The process of mixing the solar and methanol takes the addition of surfactants to obtain good homogeneity. Testing was conducted using simulation software with engine modeling. The result can be seen in the reduction and the addition of standard pressure 200 bar, that the emulsion fuel in SFOC (specific fuel oil consumption) suffered a decrease and increased by 0.2% and 0.3% at pressure 160 bar and pressure 240 bar. The fuel solution on SFOC suffered a decrease and an increase of 0.3% and 0.25% was produced by pressure 160 bar and pressure 240 bar. The highest NOx is produced by 240 bar injection pressures with Dexlite fuel while the lowest NOx is produced by 160 bar injection pressure with emulsion fuel.

Performance and Emission Analysis of Four-Stroke Diesel Engine Single Cylinder on Toroidal Piston Modification with B30 Fuel Adhi Iswantoro; I Made Ariana; Bagus Gigih Luqmananto; M. Furqon Maulana; Semin Semin
International Journal of Marine Engineering Innovation and Research Vol 7, No 4 (2022)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v7i4.13891

Improvement of the performance of the diesel engine can be done by expanding the combustion chamber. One of the objectives of this research is to obtain optimal piston performance by modifying the piston crown to be 1mm deeper than the standard piston using B30 fuel. This research is also proof of previous research with a simulation that concluded that the performance of a diesel engine using a modified toroidal combustion chamber (TCC) +1mm piston has better performance than a standard piston. This research will analyze the comparison of the performance of a diesel engine using a standard piston and a modified piston on the diesel engine, using an experimental method with B30 biodiesel fuel with engine speed (RPM) variation of 1900 and 2100, also the dummy loads used are 1000, 2000, 3000, and 4000 Watts (W). From the results of the performance tests, it is concluded that the standard piston produces better performance than the modified piston with a very small difference in value in terms of torque, power, and SFOC. The level of NOx emissions produced by the standard RPM 1900 with 1000 W load is 1,483 g/KWh, at a load of 2000 W is 1,011 g/KWh, at a load of 3000 W is 1.375 g/KWh, at a load of 4000 W is 2,372 g/KWh, for standard piston RPM 2100 NOx emission levels produced at 1000 W load is 1,902 g/KWh, at 2000 W load is 1,450 g/KWh, at 3000 W load is 1.368 g/KWh, at 4000 W load is 1,066 g/KWh. The level of NOx emissions produced using a modified piston at 1900 RPM at 1000 W load is 1.865 g/KWh, at 2000 W load is 1.326 g/KWh, at 3000 W load is 1,250 g/KWh, at 4000 W load is 0.857 g/KWh, for RPM 2100 uses a modified piston at a 1000 W load is 1,970 g/KWh, at a 2000 W load is 1,583 g/KWh, at a 3000 W load is 1,465 g/KWh, at a 4000 W load is 1,226 g/KWh. NOx emission levels using standard pistons at RPM 1900 with B30 fuel tend to be smaller at low loads and larger at high loads compared to modified pistons, while NOx emission levels using standard pistons at RPM 2100 fueled by B30 are smaller than using a modified piston.

Pembuatan Converter-kit Dual Fuel LPG-Diesel Fuel untuk Nelayan di Daerah Kenjeran Surabaya Adhi Iswantoro; I Made Ariana; Semin; Aguk Zuhdi Muhammad Fathallah; Beny Cahyono
Sewagati Vol 6 No 6 (2022)
Publisher : Pusat Publikasi ITS

Terjadinya kelangkaan bahan bakar minyak (BBM) beberapa daerah di Indonesia memberikan dampak langsung kepada masyarakat, termasuk nelayan. Akibatnya nelayan tidak bisa melaut mencari ikan. Salah satu metode yang bisa dipilih untuk mengatasi masalah ini untuk membantu nelayan adalah dengan bahan bakar alternatif yaitu bahan bakar gas (BBG). Tentu perlu peralatan tambahan agar mesin diesel kapal nelayan bisa beroperasi dengan BBG. Yaitu dengan modifikasi dan penambahan alat berupa converter-kit, sehingga mesin konvensional bisa menjadi mesin dual fuel. Dalam kegiatan ini kami membuat alat converter-kit untuk bisa dipasang pada mesin kapal nelayan dan menghibahkan alat tersebut kepada nelayan di daerah Kenjeran Surabaya. Dari hasil analisis yang dilakukan berdasarkan uji laboratorium, performansi mesin diesel masih stabil ketika menggunakan mode dual fuel, yaitu daya yang dihasilkan. Kemudian untuk konsumsi bahan bakar terjadi penurunan yang signifikan dengan komposisi BBM & BBG. Selain itu tingkat emisi yang dihasilkan baik itu NOx, SOx & partikel karbon turun drastis karena penggunaan gas. Dari sini kami bisa simpulkan bahwa penggunaan gas pada mode dual-fuel lebih ekonomis dan lebih ramah lingkungan.

Pelatihan Pemanfaatan Limbah Peternakan Sapi Sebagai Bahan Bakar Biogas Murah dan Terbarukan di Kampung Susu Dinasty Tulungagung Semin; Nurhadi Siswantoro; Adhi Iswantoro
Sewagati Vol 4 No 2 (2020)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (432.546 KB)

Penggunaan bahan bakar yang berasal dari perut bumi berupaminyak dan gas alam, kian lama dirasakan semakin menipis persediaannya. Persediannya di Indonesia secara teoritis tidak lebih dari 50 tahun lagi. Selain itu kontribusi dari hasil pembakaran minyak bumi dan gas alam yang menimbulkan emisi-emisi yang dapat mencemari bumi kita. Biogas merupakan sumber bahan bakar atau energi yang dapat terbarui dan murah karena berasal dari bahan-bahan organik hasil dari kotoran mahkluk hidup yang di endapkan atau difermentasikan. Salah satu sumber bahan bakar atau energi biogas adalah berasal dari kotoran sapi, Dalam makalah ini mengkaji penggunaan limbah ternak sapi sebagai sumber bahan bakar atau energy biogas untuk keperluan rumah tangga masyarakat di Tulungagung.Dalam makalah ini menggunakan metode pengumpulan data primer berupa jumlah populasi sapi dan jumlah rumah menurut sumber penerangannya di Tulungagung.Kemudian data tersebut dianalisa dan dilakukan perhitungan.Analisa yang dilakukan berkaitan dengan ketersediaan biogas dari kotoran sapi, kebutuhan energi untuk keperluan rumah tangga masyarakat di Tulungagung dan perencanaan serta pemilihan peralatan untuk keperluan rumah tangga masyarakat yang menggunakan biogas.Dari hasil analisa pada study kasus ini diketahui bahwa potensi biogas sebesar 14,95 kg/hari mencukupi untuk keperluan disuatu daerah percontohan dan tanpa biaya setelah 1,2 tahun pemakaian.

Potensi Penggunaan Kotoran Sapi Sebagai Sumber Biogas Rumah Tangga di Kabupaten Kediri Semin; Aguk Zuhdi Muchamad Fathallah; Nurhadi Siswantoro; Adhi Iswantoro; Sukriyah Kustanti Moerad
Sewagati Vol 4 No 3 (2020)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1011.861 KB)

Penggunaan sumber energi yang tidak terbarukan secara terus-menerus dapat memicu masalah krisis energi. Untuk mengatasi permasalahan tersebut maka pengabdian terkait energi terbarukan terus dilakukan. Biogas adalah salah satu sumber bahan bakar yang terbarui karena bahan bakar ini dapat diproduksi dari bahan organik yang berasal dari makhluk hidup yang difermentasi. Biogas sangat berpotensi untuk di produksi terutama di kawasan peternakan. Menurut data dari Badan Pusat Statistika Kediri, di tahun 2018, populasi sapi di Kediri tercatat sejumlah 230.020 ekor sedangkan di tahun 2019 tercatat sejumlah 233.310 ekor. Tujuan dari pelaksaan pengabdian ini adalah untuk mengetahui potensi penggunaan biogas yang dihasilkan dari limbah ternak sapi untuk penggunaan di kabupaten Kediri, khususnya di Desa Ngampel. Pengumpulan data pada pengabdian ini dilakukan dengan cara mencari referensi yang tersedia secara online pada internet. Badan Pusat Statistika Kabupaten Kediri menjadi sumber utama terkait dengan populasi sapi pada masing masing kecamatan di Kediri. Didapatkan hasil bahwa total gas yang bisa dihasilkan dari digester adalah 2.070 kg LPG/bulan untuk kasus Desa Ngampel, Kabupaten Kediri. Dari perhitungan didapatkan bahwa kebutuhan gas LPG masyarakat Desa Ngampel adalah sebanyak 9.372 kg LPG/bulan. Maka dapat disimpulkan bahwa dari adanya digester biogas ini maka masyarakat di desa ini bisa menghemat pengeluaran untuk membeli gas LPG sebanyak 690 tabung LPG atau setara Rp. 13.110.000 per bulannya.

Co-Authors A Karomur Roziq F Agoes Santoso Aguk Zuhdi M. Fathallah Aguk Zuhdi Muchamad Fathallah Ananda Rizky Budi Pratama Bagus Gigih Luqmananto Beny Cahyono Cahyono, Beny Fatekhun Faris Fathallah, Aguk Zuhdi Muhammad I Made Ariana I Made Arina Ilham Rezandhi Akbar M. Furqon Maulana Muhammad Syuhri Nugroho, Dwi Oktavianto Wahyu Nurhadi Siswanto ramdhan febrianto saputra Salsabilla Aulia Fitri Semin Semin Semin Semin Semin Semin Semin Semin Semin Semin Semin Semin Semin Sukriyah Kustanti Moerad Sukriyah Kustanti Moerad Trika Pitana

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