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Turbo : Jurnal Program Studi Teknik Mesin
Published by Universitas Muhammadiyah Metro
ISSN : 23016663     EISSN : 2477250X     DOI : https://doi.org/10.24127
Core Subject : Engineering,
Mechanical Engineering
TURBO ISSN (print version) 2301-6663 & ISSN (online version) 2477-250X is a peer-reviewed journal that publishes scientific articles from the disciplines of mechanical engineering, which includes the field of study (peer) material, production and manufacturing, construction and energy conversion. Articles published in the journal Mechanical include results of original scientific research (original), and a scientific review article (review). Mechanical journal published by the Department of Mechanical Engineering, Faculty of Engineering, University Muhammadiyah of Metro for publishing two periods a year, in June and December with the number of articles 14-20 per year . Editors receive manuscripts in mechanical engineering from various academics, researchers and industry practitioners.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 509 Documents
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Pengaruh variasi campuran bahan bakar pertamax dan bioetanol 99,9% terhadap torsi mesin bensin 4 langkah Tecquipment TD201 Risano, A. Yudi Eka; Wardono, Herry; Sihombing, Gunawan Poniton R.P.
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1708

Abstract

Bioethanol is ethanol made from plants such as cassava, sugarcane, sago, which are processed through hydrolysis, fermentation, distillation and dehydration processes. Lampung Province is one of the largest producers of cassava in Indonesia, with the total productivity of 5,451,312 tons in 2017, and 6,683,758 tons in 2018 or there was an increase of 22,61% compared to 2017. From this data, it is possible to produce bioethanol, where every 1 kg of cassava can produce 0,106 liters of bioethanol. This is what underlies this research to investigate the effect of blending bioethanol of 99% with pertamax and bioethanol on the engine torque. Blending bioethanol of 99% can homogeusly mix. The engine used in this study is a Kohler gasoline engine equipped with a VDAS (Versatile Data Accession System) instrument unit in determining the parameters of engine performance. The blending of bioethanol of 99% as big as 14% (E14) gave the highest value of torque at 1 rotation of dynamometer valve opening and engine speed of 2000 rpm.
Pengaruh konduktivitas thermal pada hot cylinder mesin stirling menggunakan energi surya terkonsentrasi Fanani, Akhmad Rizal; Sahbana, Muhammad Agus; Suwandono, Purbo
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1741

Abstract

Renewable energy is one of the businesses sector that will develop rapidly after the changing economic order due to the corona outbreak. The characteristics of Indonesia's tropical climate by getting good sunlight throughout the year can be used as alternative and renewable energy. The Stirling engine is one type of external combustion engine, because combustion is carried out outside the engine using a closed regenerative cycle in which the working fluid is compressed or expanded in a separate reservoir and then distributed to drive the power piston reciprocatingly. The method developed is the use of solar energy which is concentrated by a parabolic reflector to the hot cylinder of the Stirling engine to convert heat energy into motion energy. The purpose of this study was to determine the effect of the thermal conductivity of several material specimens used in the hot cylinder of the Stirling engine including copper, stainless steel, & glass. This study uses an experimental method to describe the performance of a stirling engine prototype using various types of hot cylinder material specimens. The results showed that the gamma stirling engine using hot cylinder glass material had the best performance because with a heat conductivity of 0.78 W/m˚C it was able to drive a stirling engine with a speed of 132 rpm and a torque of 0.57 N.mm at the temperature difference between hot cylinder and cold cylinder of 88˚C and with a thermal efficiency of 20.39%.
Rancang bangun alat uji pompa sentrifugal bahan bakar solar sebagai media pembelajaran dan praktikum mahasiswa Program Studi Teknik Mesin Universitas Muhammadiyah Pontianak skala laboratorium Gunarto Gunarto; Suje'i Suje'i; Doddy Irawan; Eko Julianto
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1675

Abstract

This study aims to produce a diesel oil transfer device using a pump as a learning medium as well as a practical pump course for students of the Mechanical Engineering Study Program, University of Muhammadiyah Pontianak. This design needs to be made as an effort to stimulate learning motivation, improve students' understanding and thinking skills in pumping courses. The research stages are carried out by designing the design and manufacture or assembling of the diesel oil transfer device into a unified whole, as well as testing the tool so that it can be used for learning media and practicum. Data collection and retrieval is adjusted to the test instrument instrument. The result of this research is a learning and practical media tool to test the characteristics of diesel oil centrifugal pumps. This oil transfer device can operate properly and has met the standards of the pump used. This media can be used as a lecturer to facilitate the learning process for pump courses. In addition, this tool is worthy of being used as a practicum tool for centrifugal pump performance specifically for diesel oil pumps.
Karaktristik proses destilasi asap cair grade 3 Ridhuan, Kemas; Wahyudi, Tri Cahyo; Sulistiyo, Danang; Anggara, Bahtera
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1761

Abstract

Distillation of liquid smoke is a process of heating liquid smoke based on the difference in its boiling point and then cooled to get liquid smoke with better quality. This heating aims to separate unwanted components in liquid smoke such as tar and benzopyrene. The process is strongly influenced by several things such as temperature and distillator. From these two measurements, several characteristics such as heating rate, distillation flow rate of liquid smoke, production capacity, heating temperature, steam temperature and distillation time, as well as the characteristics of the resulting liquid smoke can be known.The purpose of this study is to determine the characteristics of the 3rd grade liquid smoke distillation process with electric heating and water cooling condenser which includes the production capacity of liquid smoke and to determine the quality and quantity of liquid smoke, heating rate, electricity consumption, flow rate and to determine the efficiency of 2nd grade liquid smoke production.This research was conducted at the Laboratorium Teknik Mesin Universitas Muhammadiyah Metro, this study used a distillation apparatus made of Aluminium plate 1 mm thick, 180 mm in diameter, 250 mm high. Condenser with 0.5 inch diameter copper pipe 3,5 m long, 3 inch diameter PVC pipe, 3m long. The raw material for 3rd grade liquid smoke is 3 liters.The results obtained that the distillation apparatus has a capacity of 3 liters, the distillation temperature affects the rate of heating that occurs, namely the distillation temperature of 110oC, the heating rate is 707,42 J/second, the electricity consumption is 4,48kWh, the time is 45 minutes, and for a temperature of 120 oC the heating rate is 754,60 J/second, electricity consumption is 4,467 kWh in 65 minutes. The highest yield of liquid smoke is at a temperature of 110 oC, which is 2840 ml with a flow rate of 8,35 ml/minute and an efficiency of 94,6%, pH level of 2,15. And for a temperature of 120 oC it produces 2560 ml of liquid smoke, with a flow rate of 8,67 ml/minute and an efficiency of 85,3%, with a pH level of 2,10.
Pengaruh modifikasi lift camshaft dengan bahan bakar pertalite dan pertamax terhadap kinerja mesin 110 cc Wahyu Nur Achmadin; Indah Noor Dwi Kusuma Dewi; Djoko Wahyudi
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1716

Abstract

Modification of the camshaft lift with pertalite and pertamax fuel has been carried out. This study aims to determine the effect on engine performance, namely a change in lift of 1 mm is able to maximize performance to be better than the standard. In this study using a 110cc motorcycle engine with pertalite and pertamax fuels to show a comparison of modifications to the standard. The results obtained are the modified 1mm lift camshaft with Pertamax fuel produces maximum power and torque compared to the standard camshaft, with values of 13.33 hp and 13.38 Nm, respectively. The highest increase in power and torque on pertalite fuel is found at 7000 rpm which can increase performance by 7.4% and 7.2%, respectively, from the standard camshaft. Meanwhile, the highest increase in power on Pertamax fuel was obtained at 5500 rpm rotation with a value of 12.1% while the highest torque increase in Pertamax fuel was obtained at 8000 rpm rotation with a value of 11.9%.
Study experimental alat destilasi air laut terhadap kuantitas dan kualitas air tawar yang dihasilkan dengan menggunakan energi matahari Yani, Ahmad
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1744

Abstract

One of the benefits of sunlight is to evaporate water (distillation). The working principle of this tool is that solar radiation penetrates the glass cover and hits the surface of the absorber, so that it turns into heat energy. The heat energy from the absorber is absorbed by the plate and seawater in the container in the distillation apparatus causes evaporation to occur. The water vapor produced will move up and stick to the bottom surface of the glass cover. The heat transferred to the environment causes water vapor that has reached the saturation temperature to condense. The dew that sticks to the inner surface of the glass cover will fall down by gravity following the slope of the glass cover on the outlet pipe. The purpose of this study was to determine the quantity and quality of fresh water produced by distillation equipment using solar energy. The research was conducted using an experimental method with an experimental design of a seawater distillation apparatus. The results showed that the quantity of distilled water produced from 07:00 to 16:00 for 8 days was 2578 ml. The quality of fresh water produced from the distillation apparatus includes turbidity, color, dissolved solids, temperature, taste, and odor that has met the requirements for use by the community in daily life based on the regulation of the Minister of Health of the Republic of Indonesia number 32 of 2017 concerning health quality standards. environmental and water health requirements for sanitary hygiene purposes.
Pengaruh laju aliran biogas dan waktu penyalaan Terhadap kinerja motor bakar menggunakan sistem dual fuel pertamax-biogas Mafruddin, Mafruddin; Irawan, Dwi; Pratama, Edwin Dian; Pratama, Renno yoga
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1770

Abstract

Fuels such as oil, coal and gas are non-renewable energy sources. For this reason, renewable energy sources are needed to replace these non-renewable energy sources. The use of biogas as a renewable energy source for gasoline motor fuel can be done using a dual fuel system (pertamax-biogas). Combustion on a gasoline engine with a dual fuel system will affect the resulting performance. The combustion process in the combustion engine is influenced by several factors including the biogas flow rate and ignition time. The purpose of this study was to determine the effect of biogas flow rate and ignition timing on the performance of a motorcycle engine with a dual fuel system. The method used in this study is an experimental study by testing the performance of a motorcycle engine using a dual fuel system with variations in the flow rate of biogas fuel 1 lpm, 2 lpm and 3 lpm and variations in ignition time of 11°, 13° and 15°. before TDC. From the results of the study it can be concluded that the biogas flow rate and ignition timing affect the performance of the motor. The highest power was obtained by varying the biogas flow rate of 2 lpm and ignition time of 15° before TDC, while the best specific fuel consumption was obtained at variation of the biogas flow rate of 3 lpm and ignition time of 15° before TDC.
Respon struktur akibat perubahan jarak stiffener pada car deck Kapal Ferry Ro-Ro Alamsyah Alamsyah; Septiany Tri Pangestu; Amalia Ika Wulandari
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1705

Abstract

Ro-Ro type trans ships have a Car Deck which is useful for accommodating cargo in the form of vehicles. The construction of the deck must be strong enough so that it does not suffer structural damage when working with a certain load. In this case the stress strain becomes very important as an element of deck strength. As for what affects the strength of the deck construction, one of which is the stiffener distance. This purpose of research to determine the response of the car deck structure with variations in stiffener distance to the stress-strain value. The method used is the Finite Element Method. The results of detected the maximum stress value at a stiffener distance of 550 mm 325.471 N/mm2 with a maximum strain of 3.33 x 10-2 mm, for a stiffener distance of 650 mm the maximum stress was 407.521 N/mm2 and a maximum strain of 3.35 x 10-2 mm, a stiffener distance of 750 mm the maximum stress generated is 444.129 N/mm2 with a maximum strain of 3.36 x 10-3 mm, a stiffener distance of 850 mm, the maximum stress generated is 448.469 N/mm2 with a maximum strain of 3.43 x 10-3 mm. For a stiffener distance of 950 mm, the maximum stress is 452.567 N/mm2 with a maximum strain of 3.53 x 10-3 mm.
Modifikasi dan uji performansi mesin perontok lada dengan mekanisme perontok silinder berjaring Leo Dedy Anjiu; Suhendra Suhendra
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1566

Abstract

Pepper is one of Indonesia's leading agricultural products. However, post-harvest handling of pepper, such as the threshing process, is still done traditionally. Efforts to overcome these problems done by developing a mechanical threshing process, including by designing and construction a mesh thresher cylinder type of pepper threshing. Test results show, this pepper thresher has a weakness, namely low threshing efficiency so that it needs to developed. Based on these conditions, research is needed that aims to develop, modify and done performance tests on the pepper thresher. The modification was made by making the contact angle between the thresher cylinder and the threshing net is 60o and resulted length of the threshing contact field of about 5.23 cm. The independent variable was the thresher cylinder rotational speed varied into 540, 471, 451 and 352 rpm. The dependent variables were capacity, threshing efficiency and percentage pepper of damage. The results of the analysis showed that the rotational speed of the threshing mechanism had a very significant effect on the capacity, threshing efficiency and the percentage pepper of damage. Increasing the speed of the thresher cylinder can increase the capacity and percentage of damaged pepper, but reduce threshing efficiency. The threshing efficiency increase of the pepper thresher before and after modification was from 35.8% to 95.93% on the approaching treatment.
Analisis getaran dan kebisingan pada kamar mesin dan geladak penumpang kapal cepat Aluminium Amalia Ika Wulandari; Suardi Suardi; Muhammad Yusuf Ismail
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1754

Abstract

Ship vibration is part of the problem with ship dynamics. In addition to producing noise that disturbs the comfort of crew and passengers, engine structures and components can be damaged due to vibrations that are too high, resulting in material fatigue and material deformation. In order to avoid the damage that occurs and in order to improve the comfort of passengers and crew, shipbuilding must comply with vibration and noise standards. This study aims to analyze the value of vibration and the value of noise that arises on the aluminum fast boat as a result of excitation in terms of the main engine. Calculation of natural frequency and mode shapes is done using ship modeling with Finite Element Analysis Software. The excitation frequency of the main engine is 35.014 Hz. Based on the system's amplitude calculation, the values range from 3.273 x 10-7 to 2.703 x 10-6. Then the vibration standard values obtained are in the range of values from 0.253 to 2.093. Then, the noise radiation value obtained is in the range of 134,582 dB to 130,449 dB. All research results regarding vibration and noise standards in the engine room and passenger deck of aluminum ships obtained results that meet the standards, so it can be concluded that the ship's construction is safe from excessive vibration and noise.

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