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All Journal Mechatronics, Electrical Power, and Vehicular Technology Jurnal Teknik Mesin Jurnal Teknologi FLYWHEEL : Jurnal Teknik Mesin Untirta Indonesian Journal of Science and Technology Jurnal Penjaminan Mutu CARADDE: Jurnal Pengabdian Kepada Masyarakat JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Quantum Teknika Jurnal Teknik Mesin Mechanical Engineering for Society and Industry Automotive Experiences Prosiding Seminar Nasional Program Pengabdian Masyarakat Urecol Journal. Part D: Applied Sciences Prosiding University Research Colloquium Borobudur Engineering Review Jurnal Penjaminan Mutu
Suroto Munahar
Universitas Muhammadiyah Magelang, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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Harvesting Cooling Effect on LPG-Fueled Vehicles for Mini Cooler: A Lab-Scale Investigation Setiyo, Muji; Widodo, Noto; Purnomo, Bagiyo Condro; Munahar, Suroto; Rahmawan, Muhammad Andi; Luthfi, Akbar
Indonesian Journal of Science and Technology Vol 4, No 1 (2019): IJOST: VOLUME 4, ISSUE 1, 2019
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v4i1.12834

Abstract

This article presents an investigation of the actual cooling effect on a lab-scale prototype of LPG-fueled vehicles. The cooling effect is obtained from heat absorption by LPG on the vaporizer. Water with a mass flow rate of 1, 2 and 3 lpm is flowed from the cooling box to the LPG evaporator and flow back to the cooling box. The car used in this study has a capacity of 1500 cc that rotates 1000, 1500, and 2000 rpm. The results showed that there was a relationship between cooling power with the increase in engine speed and mass flow rate of water that crosses the evaporator. The biggest cooling power is 378 Watts at 1000 rpm with a water mass flow rate of 3 lpm.
Evaluasi Ketercapaian Standar Penjaminan Mutu Penelitian Di Program Studi D3 Mesin Otomotif Universitas Muhammadiyah Magelang Dengan Metode Indeks Setiyo, Muji; Waluyo, Budi; Saifudin, .; Purnomo, Bagiyo Condro; Munahar, Suroto; Widodo, Noto; Rusdjijati, Retno
Jurnal Penjaminan Mutu Vol 4, No 1 (2018)
Publisher : LPM IHDN Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (218.642 KB) | DOI: 10.25078/jpm.v4i1.397

Abstract

In the past decade, the general method for measuring the performance of research and scientific publications in a Study Program at a Higher Education is by the Rough Value (Nilai Kasar, NK) calculated per three years. This value is derived from the accreditation instrument. In fact, the calculation of the performance of research and scientific publications with NK cannot represent an annual performance. Therefore, this paper presents a new method for calculating research and scientific publications performance with an index (IP-PS and IPub-PS), which is calculated annually. An example of quality measurement practice in the Automotive Diploma Program of Universitas Muhammadiyah Magelang. As a result, calculations with IP-PS and IPub-PS are more likely to present real conditions per year than using NK.
Implementasi Pemanfaatan Biogas Sebagai Energi Pendingin Susu Di Kecamatan Cepogo Kabupaten Boyolali munahar, suroto; Purnomo, Bagiyo Condro; Widiyanto, Andi
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol 3 No 2 (2019): JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : Dewan Pimpinan Daerah (DPD) Forum Dosen Indonesia JATIM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.397 KB) | DOI: 10.36339/je.v3i2.222

Abstract

Central Java Province is a province that has dairy producing areas, including Boyolali Regency. This area is known as a dairy producing area that can supply milk needs in the Semarang, Klaten and Solo regions. However, the milk processing industry has not fully supported the dairy farmers. This condition can be known when the milk processing industry sets too high quality standards, causing problems for dairy farmers. This effect causes milk from dairy farmers to be thrown away. Another problem arises due to the inaccurate time of collection with the time of milk extraction to be accommodated in the KUD. Milk storage and cooling equipment owned by cattle farmers are not optimal because they use electricity sourced from PLN, thus increasing production costs. For that reason, in solving these problems by making milk storage devices and coolers with energi from biogas. The results of the implementation of this technology can reduce production costs because the milk storage process does not require energi from PLN. Besides, it can reduce milk wasted due to wrong timing of milk collection and order.
AFR and fuel cut-off modeling of LPG-fueled engine based on engine, transmission, and brake system using fuzzy logic controller (FLC) Setiyo, Muji; Munahar, Suroto
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 8, No 1 (2017)
Publisher : Research Centre for Electrical Power and Mechatronics, Indonesian Istitutes of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (140.038 KB) | DOI: 10.14203/j.mev.2017.v8.50-59

Abstract

During deceleration, continuous fuel flows into the engine not only causing over fuel consumption but also increasing exhausts emissions. Therefore, this paper presents a simulation of AFR and fuel cut-off modeling in the LPG-fueled vehicle using Fuzzy Logic Controller (FLC). The third generation of LPG kits (Liquid Phase Injection, LPI) was chosen due to its technological equivalency to EFI gasoline engine and promising to be developed. Given that the fuel system control is complex and non-linear, FLC has been selected because of simple, easy to understand, and tolerant to improper data. Simulation results show that the AFR and fuel cut-off controller able to maintenance AFR at the stoichiometric range during normal operation and able to cut the fuel flow at deceleration time for saving fuel and reducing emissions.
Karakteristik Refrigeran Musicool Dalam Mesin Refrigerasi Kompresi Uap Menggunakan Evaporator Ganda Purnomo, Bagiyo Condro; Widodo, Noto; Munahar, Suroto; Nugroho, Dimas
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 2 (2020): April
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010208

Abstract

Musicool is an alternative refrigerant developed as a working fluid in a steam compression refrigeration system. Musicool has many advantages compared to conventional refrigerants, the advantage is that it is environmentally friendly. This study aims to determine the characteristics of musicool 134 on a steam compression refrigeration machine using a double evaporator. The test is done by comparing the characteristics of a single evaporator refrigeration machine and a double evaporator using musicool 134. The research variable is the air flow through the evaporator that is equal to 0.022 kg / s, 0.027 kg / s, 0.033 kg / s. The test data is taken by measuring the temperature and pressure of each component in the refrigeration machine, then using the P-h diagram musicool 134, to determine the performance of the refrigeration machine. The results of the study provide information that the use of a double evaporator will give rise to an improved refrigeration system performance compared to using a single evaporator.
Pengaruh Tekanan Kompresi Terhadap Daya dan Torsi Pada Engine Single Piston Purnomo, Bagiyo Condro; Munahar, Suroto
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010103

Abstract

LPG is an alternative fuel as fuel oil (BBM) which has a higher octane and energy value compared to BBM, and produces lower exhaust emissions. However, engine performance has decreased. This research presents an analysis of the performance of a single piston 4-stroke LPG engine with changes in compression pressure. Tests were carried out to determine the power and torque with variable pressure compression of  9 bar, 9.5 bar and 10 bar. The test results show that a single piston 4-stroke LPG engine with 9 Bar compression pressure produces a maximum torque of  9.77 Nm at 3380 rpm and a maximum power of 6.7 HP at 5870 rpm. Whereas the 10 Bar compression pressure produces a maximum torque value of 10.79 Nm at 3689 rpm and a maximum power of 6.9 hp at 5936 rpm. The conclusion of this research is that the higher the engine compression pressure, the higher the thermal efficiency in the combustion chamber so that engine performance increases
Evaluasi Ketercapaian Standar Penjaminan Mutu Penelitian Di Program Studi D3 Mesin Otomotif Universitas Muhammadiyah Magelang Dengan Metode Indeks Setiyo, Muji; Waluyo, Budi; Saifudin, .; Purnomo, Bagiyo Condro; Munahar, Suroto; Widodo, Noto; Rusdjijati, Retno
Jurnal Penjaminan Mutu Vol 4, No 1 (2018)
Publisher : LPM IHDN Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25078/jpm.v4i1.397

Abstract

In the past decade, the general method for measuring the performance of research and scientific publications in a Study Program at a Higher Education is by the Rough Value (Nilai Kasar, NK) calculated per three years. This value is derived from the accreditation instrument. In fact, the calculation of the performance of research and scientific publications with NK cannot represent an annual performance. Therefore, this paper presents a new method for calculating research and scientific publications performance with an index (IP-PS and IPub-PS), which is calculated annually. An example of quality measurement practice in the Automotive Diploma Program of Universitas Muhammadiyah Magelang. As a result, calculations with IP-PS and IPub-PS are more likely to present real conditions per year than using NK.
AFR and fuel cut-off modeling of LPG-fueled engine based on engine, transmission, and brake system using fuzzy logic controller (FLC) Muji Setiyo; Suroto Munahar
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 8, No 1 (2017)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/j.mev.2017.v8.50-59

Abstract

During deceleration, continuous fuel flows into the engine not only causing over fuel consumption but also increasing exhausts emissions. Therefore, this paper presents a simulation of AFR and fuel cut-off modeling in the LPG-fueled vehicle using Fuzzy Logic Controller (FLC). The third generation of LPG kits (Liquid Phase Injection, LPI) was chosen due to its technological equivalency to EFI gasoline engine and promising to be developed. Given that the fuel system control is complex and non-linear, FLC has been selected because of simple, easy to understand, and tolerant to improper data. Simulation results show that the AFR and fuel cut-off controller able to maintenance AFR at the stoichiometric range during normal operation and able to cut the fuel flow at deceleration time for saving fuel and reducing emissions.
AFR Modeling of EFI Engine Based on Engine Dynamics, Vehicle Dynamics, and Transmission System Suroto Munahar; Muji Setiyo
Jurnal Teknik Mesin (JTM) Vol 7, No 1 (2017)
Publisher : LP2M - Institut Teknologi Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1222.48 KB)

Abstract

During this time, the AFR control systems on the Ligh Duty Vehicles (LDVs) generally only engage the engine condition, such as manifold pressure, engine speed. In fact, fuel consumption is not only influenced by the engine dynamics but also influenced by outside factors such as gear position (transmission) and vehicle speed. Therefore, this paper presents a simulation to control the Air to Fuel Ratio (AFR) on Electronic Fuel Injection (EFI) engine that accommodated engine dynamics, vehicle speed dynamics, and gear position dynamics (transmission). Fuzzy Logic Controller (FLC) was selected for AFR modeling because of the engine work in a non-linear condition. The simulation results show that the model developed is able to control the AFR on the vehicle speed changes. Even, the system is able to perform fuel cut-off at the time of deceleration from high speeds. 
UJI KOMPOSISI BAHAN BAKAR DAN EMISI PEMBAKARAN PERTALITE DAN PREMIUM Muhammad Luthfi; Dwi Ahmad R; Muji Setiyo; Suroto Munahar
Jurnal Teknologi Vol 10, No 1 (2018): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.10.1.67-72

Abstract

Makalah ini menyajikan hasil investigasi kandungan penyusun bahan bakar pertalite terhadap emisi gas buang. Molekul pertalite dan premium diuji dengan Gas Chromatography Mass Spectrometri (GC-MS), sedangkan emisi gas buang diuji dengan Engine gas analyzer. Hasil uji GC-MS menunjukan bahwa pertalite memiliki kandungan molekul penyusun yang lebih banyak dari premium, sedangkan hasil uji emisi menunjukkan pertalite menghasilkan gas berbahaya lebih sedikit dibandingkan dengan premium.
Co-Authors Agung Setyo Pambudi Agus Wahyudi Ahmad Irfan An'nisa Sholihah Andi Widiyanto Andi Widiyanto Andi Widiyanto Anisa Hakim Purwantini Anwar Ilmar Ramadhan Argi Ananda Wardana Aries Abbas Azuan Ahmad Baginda Pangidoan Tanjung Bagiyo Condro Purnomo Budi Waluyo Budi Waluyo Darmawan Rois Diky Eryanto Dimas Abdul Khusaeni Dimas Nugroho Dimas Riki Romadhon Dori Yuvenda Dwi Ahmad R Dwi Restianto Dwi Sudarno Putra Eko Muh Widodo Fahrian, Hanif Farika Tono Putri Hanif Fahrian Hasan Köten Khoirul Fa’i Lalank Samudra Mukti Hidayat Lilik Budiyarto Lintang Muliawanti Luthfi, Akbar Madihah Mohd Saudi Moch. Imron Rosyidi Moehamad Aman Muhammad Iqbal Al-Fikri Muhammad Latifur Rochman Muhammad Luthfi Muhammad Mauludin Kharim Muji Setiyo Muji Setiyo Muji Setiyo Muji Setyo Nanda Ferdiansyah Nofa Ardana Noto Widodo Noto Widodo Noto Widodo Nurrochman, Taufik Prasasti Bayu Aji Pramono Ragil Tri Indrawati Rahmawan, Muhammad Andi Ray Adhan Brieghtera Refaldy Pristiwantoro Riyan Adhy Pratama Riyan Tri Aditya Pamungkas Rochiyati Murniningsih, Rochiyati Roni Muhammad Susanto Rusdjijati, Retno Saifudin Saifudin Saifudin Saifudin Setyo Widiantoro Sodiq Kamal Susanto, Roni Muhammad Taufik Nurrochman Wahyu Danu Romadlon Widha Bagus Fahriansyah Yoshifumi Ito