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All Journal Jurnal Pendidikan Teknologi dan Kejuruan JINOP (Jurnal Inovasi Pembelajaran) VANOS Journal of Mechanical Engineering Education Edukasi: Jurnal Pendidikan INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Ensiklopedia of Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Journal of Applied Engineering and Technological Science (JAETS) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering PAKAR Pendidikan Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Community Empowerment MSI Transaction on Education AEEJ : Journal of Automotive Engineering and Vocational Education Automotive Experiences JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Edumaspul: Jurnal Pendidikan
Ahmad Arif
Automotive Engineering Department, Universitas Negeri Padang
Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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Kontribusi Penerapan Aspek K3 Terhadap Hasil Belajar Siswa Mata Pelajaran PMKR Kelas XI Jurusan TKR di SMKN 2 Payakumbuh Pinto Pratama Afosma; Dwi Sudarno Putra; Milana; Ahmad Arif
MSI Transaction on Education Vol 4 No 3 (2023): MSI Transaction on Education
Publisher : Minangkabau Scholar Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/mted.v4i3.120

Abstract

Penelitian ini bertujuan untuk mengukur Kontribusi Penerapan Aspek keselamatan dan kesehatan kerja Terhadap Hasil Belajar Siswa Mata Pelajaran PMKR Kelas XI Jurusan TKR di SMKN 2 Payakumbuh. Penerapan aspek K3 di Sekolah Menengah Kejuruan berpengaruh pada hasil belajar pratikum siswa, dengan tujuan terciptanya hasil belajar yang maksimal ada kaitan penting akan penerapan aspek K3. Metode penelitian ini ini adalah penelitian deskriptif korelasional yang bertujuan untuk menemukan ada tidaknya hubungan antara Aspek K3 dengan hasil belajar pratikum siswa. Berdasarkan pengujian hipotesis, diperoleh nilai r hitung > r tabel 0.266. Setelah dilakukan uji t, diketahui bahwa t hitung > tabel 1,673. Hal ini menunjukan bahwa hipotesis yang menyatakan bahwa terdapat hubungan positif antara kedua variabel (jelas) dengan taraf signifikan 5% secara empiris. dapat disimpulkan bahwa Penerapan Aspek K3 berkontribusi terhadap Hasil Belajar Siswa. This research aims to measure the contribution of implementing occupational health and safety aspects to the learning outcomes of students in the PMKR class XI TKR department at SMKN 2 Payakumbuh. The application of K3 aspects in Vocational High Schools influences students' practical learning outcomes, with the aim of creating maximum learning outcomes, there is an important connection with the application of K3 aspects. This research method is descriptive correlational research which aims to find out whether there is a relationship between K3 aspects and students' practical learning outcomes. Based on hypothesis testing, the calculated r value was 0.753 > r table 0.266. After carrying out the t test, it is known that t count is 5.231 > table 1.673. This shows that the hypothesis states that there is a positive relationship between the two variables (clear) with an empirical significance level of 5%. it can be concluded that the application of K3 aspects contributes to student learning outcomes.
The Fuel System Modification To Strengthen Achievement And The Prospect Of Utilizing Gasoline Ethanol Blended With Water Injection Wawan Purwanto; Tung-Kwan Liu; Hasan Maksum; Ahmad Arif; Muhammad Yasep Setiawan; Muhammad Nasir
Journal of Applied Engineering and Technological Science (JAETS) Vol. 5 No. 2 (2024): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v5i2.3249

Abstract

This research proposes a fuel system conversion from a carburetor to an electronic fuel injection (EFI), to save fossil fuels using gasoline-ethanol combined with water injection. Beneficial as an offer for Indonesian motorcycle environmental friendliness in terms of exhaust emissions. The goal of this study is to improve engine performance and accommodate technology for the deployment of ethanol gasoline implementations. The experiment was conducted using fuel with a ration octane number (RON) of 92, gasoline-ethanol was executed up to E25 then applied water injection (Wi). The results show that converting a conventional carburetor to EFI and additional water injection increases engine performance, mileage, and reduces exhaust emissions.
The Feasibility Study of Light Vehicle Engineering Electrical Practice Facilities and Infrastructure at Vocational Education School Ahmad Arif; Ambiyar Ambiyar; Nurhasan Syah; R. Chandra; Wawan Purwanto; Nuzul Hidayat; Muhammad Yanda
Edumaspul: Jurnal Pendidikan Vol 6 No 2 (2022): Edumaspul: Jurnal Pendidikan
Publisher : Universitas Muhammadiyah Enrekang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33487/edumaspul.v6i2.4877

Abstract

The completeness and feasibility of infrastructure in the world of education is something that must be considered and fulfilled. This has an impact on learning outcomes and students' abilities. This study aims to determine the feasibility of facilities and infrastructure in the light vehicle engineering electrical practice workshop at Padang 1 State Vocational Education School. This research uses descriptive analysis method. Research data obtained from interviews, documentation, and direct observation at school. The data on facilities and infrastructure that has been obtained is then compared with the standards of facilities and infrastructure listed in the Regulation of the Minister of Education of the Republic of Indonesia number 40 of 2008 and the National Education Standards Agency number 1049-P2 of 2010/2011. The results showed that the level of feasibility of the facilities and infrastructure for the electrical practice light vehicle engineering Padang 1 State Vocational Education School was 56.42% and 53.32% which were included in the feasible category. Existing electrical practice learning facilities and infrastructure can still be used and schools are expected to improve their quality.
Improvement of Teachers' Ability in Creating Modules with Information Technology on Vocational High Schools West Sumatera Hasan maksum; Martias Martias; Wawan Purwanto; Ahmad Arif
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 6 No 2 (2025): Vol 6 No 2 (2025) : AEEJ : Journal of Automotive Engineering and Vocational Educa
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/aeej.v6i2.250

Abstract

The purpose of this analysis was to look at the teacher's ability to improve the teacher's ability to develop online-based teaching materials. The transition period between the pandemic and after requires strategies to ensure that the learning transition continues to provide students with comfort in their learning. The activity drew 30 people, all of whom were members of the West Sumatra Automotive Engineering Subject Teacher Consultation. They are divided into two categories: online and offline. The online module work created by the participants will be analyzed to determine the effectiveness of the learning and the teacher's ability to create online modules. As a result, participants can create effective learning modules. However, it takes longer for the presenters to teach those who are online how to complete the task.
Exploration of Engine Parameters for Emission Reduction in Gasoline-Ethanol Fueled Engines Wawan Purwanto; Hasan Maksum; Ahmad Arif; Muhammad Latifur Rochman; Sujito Sujito; Kathleen Ebora Padrigalan
Automotive Experiences Vol. 7 No. 3 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.12467

Abstract

The main objective of this study is to develop spark ignition engine parameters that allow complete combustion while reducing dependence on fossil fuels. To achieve this goal, optimization of compression ratio, gasoline-ethanol mixture, ignition timing, and spark plug type was used. In addition, this study used water injection that continuously injects water before the intake manifold. In this study, the Taguchi method with the L9 orthogonal array was applied. According to the experimental verification results, the best combination to reduce exhaust emission levels is to utilize gasoline-ethanol (E70), a compression ratio (CR) of 15.6:1, an ignition degree of +4°, and a platinum spark plug. Meanwhile, the presence of water injection at 1.45 ml/s helps reduce vehicle exhaust pollutants.
Aerodynamic Approach to Two-Passenger City Car Design: A Study of Square Back and Compact Shapes Randi Purnama Putra; Dori Yuvenda; Remon Lapisa; Wanda Afnison; Milana Milana; M. Yasep Setiawan; Ahmad Arif; Dani Harmanto
Automotive Experiences Vol. 8 No. 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.13686

Abstract

The development of lightweight electric cars for urban mobility requires efficient aerodynamic design without sacrificing space efficiency. This study presents a novel method by investigating the combination of a two-seater city car's compact dimensions and square back shape, which has not been extensively researched for low- to medium-velocity vehicles. This study's objective is to assess the design's aerodynamic performance using numerical simulations using the Computational Fluid Dynamics (CFD) approach. The vehicle model is designed with a compact body and square back, which is commonly used in small vehicles with high maneuverability requirements. The simulations are conducted at three different air velocity levels: 10, 20, and 30 m/s. The results of the study showed an increase in the value of the drag coefficient (Cd) along with an increase in flow velocity. At a velocity of 10 m/s, the Cd value was recorded at 0.4536. When the velocity increased to 20 m/s, the drag coefficient increased slightly to 0.4563. Further increases in velocity to 30 m/s resulted in a Cd value of 0.4581. This Cd value shows the consistency of aerodynamic performance with increasing velocity, with fluctuations that remain within the efficiency limits of lightweight vehicles. The pressure distribution contour shows high-pressure accumulation at the front and low pressure at the rear of the vehicle, which generates large turbulent wakes in the rear area and contributes to increased drag. These findings indicate that the square rear body design faces significant aerodynamic challenges. Therefore, design strategies such as adding a rear spoiler, using a rear diffuser, and optimizing the rear body angle are suggested as potential solutions to improve flow efficiency.
Co-Authors Alamsah Alfiza Candra Ambiyar, Ambiyar Ari Aryadi Arwizet Arwizet, Arwizet Bahrul Amin Budi Utomo Wisesa Budi Waluyo Dani Harmanto Deded Purnama Dedi Mulyono Dedi Setiawan Doni Saputra Donny Fernandez Dori Yuvenda Dwi Sudarno Putra Erzeddin Alwi Fauzan Zaharbaini Fazrin Hidayat Giyano Lesmana Hamid Nasrullah Handini Novita Sari Hansi Effendi Hasan Maksum Hendra Dani Saputra I Gusti Bagus Wiksuana Ichsan Nasution Ilham Akbar Maulana Ilham Putra Chaniago Irma Yulia Basri Jerry Chih Tsong Su Jodhi Ananda Prima Joumil Aidil Saifuddin Kathleen Ebora Padrigalan Krismadinata Krismadinata Lasyatta Syaifullah M Giatman M Nasir M. Abdi Rizal M. Sadly Firmansyah M. Yasep Setiawan M. Yasep Setiawan M.Riki Rinaldi Martias Martias Masykur Masykur Milana Milana Milana Milana Muhammad Latifur Rochman Muhammad Nasir Muhammad Yanda Muhammad Yasep Setiawan Mukhlidi Muskhir Muslim Muslim Naufal Alifka Nizwardi Jalinus Nizwardi Zalinus Nurhasan Syah Nuzul Hidayat, Nuzul Osvaldo Adven Kurniawan Pinto Pratama Afosma Purwanto, Wawan Putra, Randi Purnama R Candra R. Chandra R. Chandra Refdinal, Refdinal Remon Lapisa Rifdarmon, Rifdarmon Riko Saputra Rino Kurniawan Rizki Alfarizi Rusdiman Simatupang, Wakhinuddin Toto Sugiarto Toto Sugiarto Tung-Kwan Liu Wagino Wagino Wagino Wakhinuddin S Wanda Afnison Wanda Afnison Whustha Khairul Yanda Septian Putra Yanto, Doni Tri Putra Yuke Permata Lisna Yuvani Oksarianti Zikri Fauzi