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All Journal International Journal of Renewable Energy Development IPTEK The Journal of Engineering IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Indonesian Journal of Science and Technology INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JURNAL PENDIDIKAN TAMBUSAI Jurnal Ilmiah Pendidikan Profesi Guru Ensiklopedia of Journal Edumaspul: Jurnal Pendidikan EDUTEC : Journal of Education And Technology Journal of Applied Engineering and Technological Science (JAETS) PAKAR Pendidikan Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Teknomekanik JPTE: Jurnal Pendidikan Teknik Elektro AEEJ : Journal of Automotive Engineering and Vocational Education JMES The International Journal of Mechanical Engineering and Sciences Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Vokasi Mekanika Journal of Scientech Research and Development MASALIQ: Jurnal Pendidikan dan Sains Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat International Journal of Renewable Energy Development Journal of Innovative and Creativity Journal of Civil Engineering and Vocational Education Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer

Dori Yuvenda

Departemen Teknik Mesin, Universitas Negeri Padang

Author-ID : 2567444

Religion Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT 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 Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Transportation Other

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PROGRAM UP-GRADE SKILL SERVICE SEPEDA MOTOR BAGI MEKANIK BENGKEL PEMULA DI JORONG KOTO MALINTANG Erzeddin Alwi; Nuzul Hidayat; Wanda Afnison; Dori Yuvenda
PAKAR Pendidikan Vol 16 No 1 (2018): Published in January 2018
Publisher : Pusat Pengembangan Ilmiah dan Penelitian Mahasiswa Universitas Negeri Padang

The development of automotive technology is increasing rapidly along with the high level of competition among producers. According to data compiled by the Association of Indonesian Motorcycle Industry (AISI) in 2015-2016 there was an increase in the number of motorcycle sales of about 4.6% or an increase of 5.8 million units for. The high level of sales and technological developments leaving the problem for the automotive business itself. One of the problems that often happens is the slow absorption of technological progress to the hands of users. Motorcycle service workshops and bottom-line businesspeople are very vulnerable to the impact of this technology transfer process. This situation indirectly affects the sluggish economic movements among the bottom because they lack access (training and access to the latest sources of technology references). This situation should be a special concern for the top of the automotive business activists and also practitioners / academics related to the rapid development of technology produced can give impacts of rapid economic growth also for lower-level business people.The Up Grade skill program of motorcycle service involves a partner group (workshop) consisting of 6 people mechanics who are still in the beginner category. The training materials provided are tune up, conventional motorcycle overhaul (carburetor) and tune up injection motorcycle. Training is held for 2 full days (equivalent to 20 hours) with competency test process on the last day of the program. From the training activities can be seen the improvement of mechanical competence obtained from the pre-test at the beginning of the training and post test at the end of the activity.Through the program of Community Service of Regular Science and Technology is expected proposers can play its role as an academic in helping accelerate the process of technology transfer, especially for lower-level business people who do have limited access to technology. After the end of this program is expected to increase the mechanical skills as well as the increased service quality and competitiveness of partner workshops.

PENINGKATAN KOMPETENSI SISWA MELALUI PELATIHAN TEKNOLOGI SEPEDA MOTOR Hendra Dani Saputra; Dedi Setiawan; Dori Yuvenda; Ahmad Arif; Rahmat Hidayat
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 19, No 3 (2019): Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Universitas Negeri Padang

Siswa-siswa SMK membutuhkan keahlian tentang teknologi sepeda motor terbaru, dimana kompetensi tersebut akan berguna oleh siswa ketika mereka menyeleseikan studinya di sekolah. Salah satu kompetensi teknologi sepeda motor terbaru yang diharapkan adalah kemampuan menggunakan dan menganalisis data hasil pemeriksaan alat pendeteksi kerusakan sepeda motor berupa Scan Tool. Kemampuan akhir yang diharapkan dari pelatihan ini, nantinya siswa mampu menggunakan dan menganalisis data hasil pemeriksaan serta melakukan perbaikan berdasarkan data dari Scan Tool. Program pelatihan bertujuan untuk mengembangkan dan meningkatkan kemampuan dari siswa kelas XII dalam menggunakan Scan Tool. Melalui program pelatihan ini diharapkan siswa mampu menggunakan, menganalisa dan melakukan perbaikan sepeda motor berdasarkan data dari Scan Tool. Sehingga siswa kelas XII memiliki kemampuan menggunakan dan menganalisa serta melakukan langkah perbaikan sepeda motor. Program pelatihan ini diberikan melalui metode pemberian modul teknologi sepeda motor , diskusi, menayangkan melalui slide tentang teknologi sepeda motor honda mesin serta mempraktekkan cara menggunakan dan menganalisis kerusakan sepeda motor. Sehingga diharapkan terjadi peningkatan kemampuan siswa kelas XII dalam kompetensi keahlian penggunaan dan analisa data kerusakan teknologi sepeda motor honda

Kontribusi Motivasi Kerja, Disiplin Kerja dan Pengembangan Karier Terhadap Kinerja Guru di SMK Negeri 1 Ranah Batahan Tiwi Rahmadona; Hasan Maksum; Eko Indrawan; Dori Yuvenda
Jurnal Ilmiah Pendidikan Profesi Guru Vol. 4 No. 3 (2021): November
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jippg.v4i3.38647

Kurang optimanya kinerja guru dapat dilihat dari belum kurangnya kuantitas dan kualitas kerja sesuai target yang diharapkan, serta kecepatan dan ketepatan pelaksanaan pekerjaan. Penelitian ini bertujuan untuk mengukur kontribusi motivasi kerja, disiplin kerja, dan pengembangan karier secara bersama-sama terhadap kinerja guru SMK. Penelitian ini merupakan jenis deskriptif korelasional dengan jumlah populasi dalam penelitian yakni sebanyak 67 orang guru SMK. Penarikan sampel penelitian dilakukan dengan teknik total sampling, yakni dimana seluruh jumlah populasi dijadikan sebagai sampel penelitian. Pengumpulan data dilakukan dengan menggunakan teknik wawancara, observasi dan angket. Adpaun instrument penelitian yang digunakan yakni berupa lembar kuisioner Skala Likert. Teknik analisis data diantaranya korelasi dan korelasi berganda. Hasil penelitian menunjukkan bahwa Motivasi kerja berkontribusi terhadap kinerja guru sebesar 10,18%. Disiplin kerja berkontribusi terhadap kinerja guru sebesar 21,07%. Pengembangan karir berkontribusi terhadap kinerja guru sebesar 18,23%. Serta Motivasi kerja, disiplin kerja dan pengembangan karir berkontribusi bersama-sama terhadap kinerja guru sebesar 43,6%. Berdasarkan hasil penelitian tersebut dapat disimpulkan bahwa motivasi kerja, disiplin kerja dan pengembangan karir secara bersama-sama memberikan kontribusi terhadap kinerja guru Sekolah Menengah Kejuruan.

The Influence of Air Fuel Ratio on the Performances and Emissions of a SINJAI-150 Bioethanol Fueled Engines Ari Kurniawan; Bambang Sudarmanta; Dori Yuvenda
JMES The International Journal of Mechanical Engineering and Sciences Vol 2, No 2 (2018)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25807471.v2i2.6396

In the present work, the effect of variation of air-fuel ratio on performances and emissions SINJAI-150 engine with bioethanol was conducted. Variation of the air-fuel ratio is done by setting the mass flow rate of combustion air using a supercharger. Engine performance was measured using a water brake dynamometer with a variable speed standard from 2000 to 8000 rpm at a fully open throttle condition. The results indicate that the natural intake system produces a relatively rich air-fuel ratio, with an average lambda of 0.68, so that the resulting performance is not maximum. The addition of aspirated 1 and 2 combustion air with the results in the form of average lambda at intervals of 0.8 - 1.1. On the aspirated 2, thermal efficiency increase averaged 50.32%, specific fuel consumption decrease averaged 32.74% and CO and HC emissions reduction average of 7.43 % and 25.77%.

Effect of Adding Combustion Air on Emission in a Diesel Dual-Fuel Engine with Crude Palm Oil Biodiesel Compressed Natural Gas Fuels Dori Yuvenda; Bambang Sudarmanta; Arif Wahjudi; Rozy Aini Hirowati
International Journal of Renewable Energy Development Vol 11, No 3 (2022): August 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.41275

A diesel dual-fuel engine uses two fuels designed to reduce the consumption of fossil fuels. Generally, the specific fuel consumption of diesel dual-fuel engines has increased. However, in combination with alternative fuels, namely compressed natural gas injected through air intake, the use of diesel fuel can be reduced. However, using two fuels in a diesel dual-fuel engine increases the equivalent ratio; therefore, the air and fuel mixture becomes richer because the air entering the cylinder during the intake stroke is partially replaced by compressed natural gas. This results in incomplete combustion and increases exhaust emissions, particularly hydrocarbon (HC) and carbon monoxide (CO) emissions. This study aims to improve the combustion process in dual-fuel diesel engines by improving the air-fuel ratio; thus, it can approach the stoichiometric mixture by adding combustion air forcibly to produce complete combustion to reduce CO and HC emissions. An experimental approach using a single-cylinder diesel engine modified into a diesel dual-fuel engine powered by crude palm oil biodiesel and compressed natural gas was adopted. The combustion air was forcibly added to the cylinder using an electric supercharger at different air mass flow rates ranging from 0.007074 to 0.007836 kg/s and different engine loads (1000 to 4000 watts). The results indicated that adding more air to the cylinder could produce complete combustion, reducing the emission levels produced by a diesel dual-fuel engine. An air mass flow rate of 0.007836 kg/s can reduce CO, HC, and particulate matter emissions by averages of 60.55%, 49.63%, and 86.87%, respectively, from the standard diesel dual-fuel engine. Increasing in the amount of oxygen concentration improves the quality of the air-fuel ratio, which results in improved combustion and thereby reducing emissions.

Pengaruh Metode Diskusi Menggunakan Aplikasi Zoom Terhadap Hasil Belajar Mahasiswa Dedi Setiawan; Rifdarmon Rifdarmon; Dori Yuvenda; M. Nasir
Edumaspul: Jurnal Pendidikan Vol 6 No 1 (2022): Edumaspul: Jurnal Pendidikan
Publisher : Universitas Muhammadiyah Enrekang

Abstract The purpose of this study is to find out the influence of discussion methods using zoom applications during the covid-19 pandemic on the results of learning brake steering courses and suspensions in the Department of Automotive Engineering Faculty of Engineering, State University of Padang. This study consisted of two sample classes, of which one class was an experimental class of 17 people and another class of 17 people as a control class. Discussion methods using zoom apps taught in experimental classes, while the control class without using the zoom-assisted discussion method, control class uses only e-learning platform as experimental class also uses. Sampling research using incidental sampling techniques. Data analysis to test hypotheses using T-test. Before the data is analyzed, conducted in advance descriptive analysis and test of analysis requirements (homogeneity test and normality test). The results prove that there is an influence of discussion methods using zoom applications on the learning outcomes of brake steering courses and suspensions. Keywords : Discussion Method, Zoom, Learning Outcomes, Covid 19 Abstrak Tujuan penelitian ini adalah untuk mengetahui pengaruh metode diskusi menggunakan aplikasi zoom pada masa pandemi covid-19 terhadap hasil belajar mata kuliah kemudi rem dan suspensi di Jurusan Teknik Otomotif Fakultas Teknik Universitas Negeri Padang. Penelitian ini terdiri dari dua kelas sampel, dimana satu kelas merupakan kelas eksperimen yang berjumlah 17 orang dan satu kelas lagi berjumlah 17 orang sebagai kelas kontrol. Metode diskusi menggunakan aplikasi zoom diajarkan pada kelas eksperimen, sedangkan kelas kontrol tanpa menggunakan metode diskusi berbantu zoom, kelas kontrol hanya menggunakan platform e-learning sebagaimana kelas eksperimen juga menggunakannya. Pengambilan sampel penelitian menggunakan teknik sampling incidental. Analisis data untuk menguji hipotesis menggunakan uji-T. Sebelum data dianalisis, dilakukan terlebih dahulu analisis deskriptif dan uji persyaratan analisis (uji homogenitas dan uji normalitas). Hasil penelitian membuktikan bahwa terdapat pengaruh metode diskusi menggunakan aplikasi zoom terhadap hasil belajar mata kuliah kemudi rem dan suspensi. Kata Kunci : Metode Diskusi, Zoom, Hasil Belajar, Covid 19

Industry 4.0: Challenges of Mechanical Engineering for Society and Industry Muji Setiyo; Tuessi Ari Purnomo; Dori Yuvenda; Muhammad Kunta Biddinika; Nor Azwadi Che Sidik; Olusegun David Samuel; Aditya Kolakoti; Alper Calam
Mechanical Engineering for Society and Industry Vol 1 No 1 (2021)
Publisher : Universitas Muhammadiyah Magelang

Today, in the industry 4.0 era, the boundaries of scientific disciplines are blurred, everything seems to be interrelated and shows the ability to be combined. Intelligent sensors combined with Artificial Intelligence (AI) have demonstrated their ability to influence processes, design, and maintenance in manufacturing systems. Mechanical engineering tasked with solving complex engineering problems must be able to adapt to this transformation, especially in the use of digital and IT to combine the principles of physics and engineering mathematics with materials science to design, analyze, manufacture, and maintain mechanical systems. On the other hand, mechanical engineering must also contribute to a better future life. Therefore, one of the keys to consistently playing a role is to think about sustainability, in order to provide benefits for society and industry, in any industrial era.

RANCANG BANGUN INDIKATOR PERGANTIAN PART BERKALA PADA SEPEDA MOTOR Wagino Wagino; Wawan Purwanto; Dori Yuvenda; Muhammad Rifqi
Ensiklopedia of Journal Vol 5, No 1 (2022): Vol. 5 No. 1 Edisi 1 Oktober 2022
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

The development research method can simply be defined as a research method that is intentional, systematic, aimed/directed to find, formulate, improve, develop, produce, test the effectiveness of products, models, methods/strategies/means, services.This research will start from August 2021 – September 2021 at the Automotive Engineering Workshop, Faculty of Engineering, Padang State University.Based on the results of the research that the author has done, it can be obtained that this research has produced a valid and effective periodic part replacement indicator tool for motorbike vehicles by applying a microcontroller, RTC, and SD card Module and SD Card as data storage for motorbike mileage so that it is known the age of the part from the results of the mileage measurement. So this tool is valid and functions as planned by previous researchers, and the tool is effective because it doesn't affect other systems, both mechanical and electrical. This tool has a power supply or current source from the battery, so the tool requires to be turned on and off manually.Keywords: Design; Part Change Indicator; Motorcycle

Optimasi Penggunaan Jenis Busi, Oli, Dan Campuran Ethanol Bensin Terhadap Peningkatan Suhu Dan Jarak Tempuh Sepeda Motor 4 Langkah Dengan Metode Taguchi Wawan Purwanto; Faris Afif; Remon Lapisa; Dori Yuvenda; M. Yasep Setiawan; Hendra Dani Saputra
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 3 No 2 (2022): AEEJ : Journal of Automotive Engineering and Vocational Education
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/aeej.v3i2.150

This study will look for optimal results from using the type of spark plug, oil, and gasoline ethanol mixture to increase the temperature and mileage of a 4 stroke motorcycle using the Taguchi method, which this research can also be used as a reference for further researchers. The object of research in this study is a Yamaha Vega ZR 2010 modified injection system. Data collection is done directly, such as the temperature test is carried out with an engine speed of 5000 rpm with a span of 2 minutes each run, while for the mileage test using the full to full method. Based on the results of the research that has been done, the increase in temperature gets an optimal response, namely A1 (Nickel Spark Plug) SNR response (36.2803), B3 (Shell Advance Oil) SNR response (37.8012), C2 (Ethanol gasoline 75%: 25 %) SNR response (36,4388). As for the optimal response to mileage, the factors are A2 (Iridium Spark Plug) SNR response (28.5501), B2 (Federal Racing Oil) SNR response (28.5446), C3 (Ethanol Gasoline 80%:20%) SNR response (28, 5446).

Combustion and Emission Characteristics of CNG-Diesel Dual Fuel Engine with Variation of Air Fuel Ratio Dori Yuvenda; Bambang Sudarmanta; Jamaludin Jamaludin; Oki Muraza; Randi Purnama Putra; Remon Lapisa; Krismadinata Krismadinata; Rahadian Zainul; Asnil Asnil; Muji Setiyo; Sri Rizki Putri Primandari
Automotive Experiences Vol 5 No 3 (2022)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.7807

Compressed natural gas (CNG) is a popular alternative fuel because of its more environmentally friendly properties than fossil fuels , including applications in diesel engines. However, supplying too much compressed natural gas fuel causes poor engine performance and emissions due to a decrease in the air-fuel ratio on the dual-fuel engine. The addition of air using electric superchargers was done to return the air-fuel ratio to ideal conditions. Lambda value (λ) was variation under low load (1.52 to 2.71), medium load (1.18 to 2.17), and high load (0.94 to 2.17) on a CNG-diesel dual fuel engine. The addition of pure air in each load can increase combustion stability in certain lambda, which was indicated by an increase in thermal efficiency, heat release rate, and a decrease in ignition delay, combustion duration, hydrocarbon, and carbon monoxide emissions.

Co-Authors Abdu Idham Aditya Kolakoti Agia Kulkarni Preti Ahmad Arif Ahmad Arif Ajib Jihadal Mahmud Al Munawir Alper Calam Anaperta, Yoszi Mingsih Andre Kurniawan Andre Kurniawan Andri, Rezky Andrizal Andrizal Aprinaldi, Aprinaldi Ari Kurniawan Arif Wahjudi Arwizet Arwizet, Arwizet Asnil Asnil Aswardi Aswardi Azis, Ismail Azuan Ahmad Bahrul Amin Bambang Sudarmanta Bambang Sudarmanta Bulkia Rahim Citra Dewi Dedi Setiawan Dedi Setiawan Eko Indrawan Erizon, Nelvi Erzeddin Alwi Fadhil Y Fancer Rumahorbo Faris Afif Fauza, Anna Niska Gusni Sushanti Hansi Effendi Haq, Syaiful Haris Yuliardiansyah Harmanto, Dani Hasan Maksum Hendra Dani Saputra Hendra Hidayat Hermi Zaswita I Gusti Bagus Wiksuana Irzal Irzal Jamaludin Jamaludin Jamaludin Jamaludin Jose da Silva Junil Adri Krismadinata Krismadinata Krismadinata Krismadinata, Krismadinata Kurnia, M. Chalid M. Nasir M. Yasep Setiawan M. Yasep Setiawan Madihah Mohd Saudi Maidi Saputra Martias Martias Martias Martias Masykur Masykur Milana Milana Moch. Aziz Kurniawan Muhammad Djoni Bustan Muhammad Jalil Muhammad Kunta Biddinika Muhammad Rifqi Muhibbudin Muhibbudin Muji Setiyo Muldi Yuhendri Mulianti Mulya Melda Muslim Muslim Muzakir Muzakir Nelvi Erizon Nor Azwadi Che Sidik Nurdin Hendri Nuzul Hidayat, Nuzul Oki Muraza Olusegun David Samuel Olusegun David Samuel Pribadyo Pribadyo Primawati Primawati Purwanto, Wawan purwantono purwantono Purwantono Purwantono Purwantono, Purwantono Putra, Randi Purnama Rahadian Zainul Rahmadona, Tiwi Rahmat Hidayat Raihan, Muhammad Randi Purnama Putra Ray Adhan Brieghtera Refdinal Refdinal Refdinal, Refdinal Remon Lapisa Remon Lapisa Ridho Illahi Ridho Nurmansyah Rifdarmon Rifdarmon Rifelino Rifelino Robert, Julio Rozy Aini Hirowati Sadri Arjono Setrihan Putra Sri Haryati Sri Rizki Putri Primandari Suroto Munahar Tarig Elshaarani Tiwi Rahmadona Toto Sugiarto Tuessi Ari Purnomo Veri Budiawan Arham Wagino Wagino Wagino Wanda Afnison Waskito Waskito Waskito, Waskito Yanto, Doni Tri Putra Yolli Fernanda Yus Donald Chaniago

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