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All Journal Pendas : Jurnah Ilmiah Pendidikan Dasar Mimbar Ilmu Jurnal EDUCATIO: Jurnal Pendidikan Indonesia Science Education and Application Journal Jurnal Ilmiah Profesi Pendidikan PAKAR Pendidikan Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat MSI Transaction on Education AEEJ : Journal of Automotive Engineering and Vocational Education Scientific ACADEMIA: Jurnal Inovasi Riset Akademik El Madani: Jurnal Dakwah dan Komunikasi Islam Journal of Comprehensive Science Ensiklopedia Research and Community Service Review INJECTION: Indonesian Journal of Vocational Mechanical Engineering JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia J-CoSE: Journal of Community Service & Empowerment Journal of Authentic Research Multi Discere Journal
Sugiarto, Toto
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Perbandingan Oli Mineral dan Full Synthetic terhadap Temperatur Mesin dan Konsumsi Bahan Bakar Yamaha NMAX Neo 155 Akbar, Muhammad Rizky; Sugiarto, Toto; Rifdarmon, Rifdarmon; Arif, Ahmad
Journal of Authentic Research Vol. 5 No. 3 (2026): August
Publisher : LITPAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/jar.v5i3.6304

Abstract

  Pemilihan pelumas pada skuter berteknologi Variable Valve Actuation perlu didasarkan pada bukti karena karakteristik viskositas dan bahan dasar oli dapat memengaruhi gesekan, temperatur kerja, dan kebutuhan bahan bakar. Penelitian ini membandingkan temperatur kerja mesin dan konsumsi Pertamax RON 92 pada Yamaha NMAX Neo 155 ketika menggunakan oli mineral SAE 10W-40 dan oli full synthetic SAE 5W-40. Eksperimen kuantitatif dilakukan pada satu unit sepeda motor standar pabrikan dengan desain perlakuan berulang. Setiap pelumas diuji dua kali pada jarak 15, 30, dan 45 km dengan kecepatan target 40 km/jam, beban 70-75 kg, tekanan ban, rute, dan bahan bakar yang dikendalikan. Temperatur diukur pada titik blok silinder menggunakan sensor suhu digital, sedangkan volume bahan bakar ditentukan dengan metode full-to-full dan gelas ukur. Rata-rata temperatur oli mineral mencapai 74,535°C, sedangkan full synthetic 71,898°C; selisihnya 2,637°C atau 3,54%. Konsumsi full synthetic lebih rendah pada seluruh jarak, dengan pengurangan 7,83%, 20,78%, dan 5,41%. Secara agregat, efisiensi meningkat dari 54,55 menjadi 61,43 km/L. Temuan menunjukkan bahwa perlakuan full synthetic SAE 5W-40 memberikan kondisi termal lebih stabil dan konsumsi bahan bakar lebih rendah. Namun, karena jenis bahan dasar dan kelas SAE berubah bersamaan serta hanya satu kendaraan yang diuji, hasil ini harus ditafsirkan sebagai bukti komparatif awal, bukan efek kausal murni bahan dasar oli. Selecting a lubricant for a scooter equipped with Variable Valve Actuation should be evidence-based because lubricant viscosity and base-stock characteristics may affect friction, operating temperature, and fuel demand. This study compared engine operating temperature and RON 92 gasoline consumption of a Yamaha NMAX Neo 155 using mineral SAE 10W-40 and full synthetic SAE 5W-40 oils. A quantitative repeated-treatment experiment was conducted on one factory-standard motorcycle. Each lubricant was tested twice over distances of 15, 30, and 45 km at a target speed of 40 km/h, with rider load, tire pressure, route, and fuel type controlled. Temperature was measured at a consistent cylinder-block point using a digital temperature sensor, while fuel volume was determined using a full-to-full procedure and a graduated cylinder. Mean operating temperature was 74.535°C with mineral oil and 71.898°C with full synthetic oil, a difference of 2.637°C or 3.54%. Full synthetic oil also produced lower fuel consumption at all distances, with reductions of 7.83%, 20.78%, and 5.41%. The aggregated fuel economy increased from 54.55 to 61.43 km/L. These findings indicate that the full synthetic SAE 5W-40 treatment provided a more stable thermal response and lower fuel use under the tested conditions. Nevertheless, because base-stock type and SAE grade changed simultaneously and only one motorcycle was tested, the results should be interpreted as preliminary comparative evidence rather than an isolated causal effect of lubricant base stock.
MPLEMENTASI MODEL PROBLEM BASED LEARNING (PBL) BERBANTUAN KAHOOT DALAM MENINGKATKAN HASIL BELAJAR DASAR TEKNOLOGI OTOMOTIF PADA PESERTA DIDIK KELAS X TKR DI SMKN 1 KOTA PADANG Wira Buana, Muhammad; Wagino, W; Sugiarto, Toto; Rifdarmon
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 02 (2026): Volume 11 Nomor 02, Juni 2026 Published
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i02.51971

Abstract

This study was motivated by the low learning outcomes of students in the DTO subject in the 10th-grade TKR class at SMKN 1 Padang. This is due to a suboptimal learning process, particularly regarding student engagement, the use of learning models that lack variety, and the minimal use of interactive media. These conditions have resulted in a lack of active student participatiob in the learning processs. Therefore, the implementation of a more innovative learning model is nedded to improve student learning outcomes. This study aims to improve student learning outcomes in the DTO subject through the implementation of a Kahoot-assisted Problem Based Learning (PBL) model. The research design used was Classroom Action Research (CAR), conducted in two cycles, comprising the stages of planning, implementation, observation, and reflection. The research subjects consisted of 10th-grade TKR studens at SMKN 1 Kota Padang, the teacher as an observer, and the researcher as the action implementer. Dara were collected through observation and documentation techniques, the analyzed using descriptive qualitative and quantitative methods. The research results indicate improvements in every aspect. The quality of the teaching modules improved from 76,24 (C) in Cycle I to 95,33 (SB) in Cyle II. Thecher and student engagement increased from 71,69 (C) to 90,50 (B). Student learning outcomes also improved in the areas of attiude, knowledge, and skills, moving from the “adequate” category in Cycle I to “good” in Cycle II. Thus, it can be concluded that the implementation of the Kahoot-assisted Problem-Based Learning model is effective in improving student learning outcomes in the DTO subject.
Co-Authors Ahmad Arif Akbar, Muhammad Rizky Andrizal Andrizal Annassyifa, Abid Albima Apriansyah Ardi yanto Arianto, Rian Asnawi, Naupal Azwardi Baehaqi Baharudin, Agus Bahri, Muhammad Jihadvi Athiya Bahri Dani Saputra, Hendra Decoya, Ferres Dedi Setiawan Doni saputra Donny Fernandez Dony Novaliendry Dwi Aksa, Azezen Dwi Sudarno Putra Faisal Amri Gunawan, Akmal Gusti Marliani Hakim, Zaidan Ibnul Hanafi Ar Rasyid, Imam Hanapi Hasan Harbes, Beni Haris Abizar, Haris Hasan Maksum Hendra Dani Saputra Jumiati Karim, Muhamad Nazmi Koto, Rahmat Desman Leoparlin, Alfridho M. Sadly Firmansyah M. Yasep Setiawan Martias Martias Martias Milana Milana Muhammad Fikri muhammad rizky, muhammad Muslim Muslim Muslim Muslim Nanda, Iffarial Nasyikin, Sustinawati Nizwardi Jalinus Norrahmiati Nur, Ari Muhammad Nuzul Hidayat, Nuzul Oktavianza, Zifa Panji Pasaribu, Mora Pramulia, Rahul Pratama, Moh Yoga Pratama Purwanto, Wawan Putra, Rafi Adika Ramadhan S, Yasir Rasid Annafi, Wahyu Ridwan Ridwan, Ridwan Rifdarmon Rifdarmon, Rifdarmon Romansyah Nusi Putra Sa'adah, Agis Amelia Saleh Hasibuan, Erwin Siman, Siman Slatnusa, Yoga Aldon Sofi, Abdullah Subeki, Kevin Suhelmi, Qodri Sulaiman, Agung Taufiq, Ilham Ulzan, Alfim Usri, Hafiz WAGINO Wagino Wagino, W Wanda Afnison Widyarto, Yogi Wimahatta, Muhammad Wira Buana, Muhammad Yasep Setiawan, M Zaharbaini, Fauzan Zapit, Dandi Wahyudi