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All Journal MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering AEEJ : Journal of Automotive Engineering and Vocational Education Jurnal Abdimas Serawai JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Ichsan Nasution
Departemen Teknik Otomotif, Fakultas Teknik, Universitas Negeri Padang
Religion Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Nursing Public Health Social Sciences Transportation Other

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 1 
Effect of Variations in Velocity Air Intake Cyclone Dimensions on Motorcycle Torque and Power Ichsan Nasution; Wawan Purwanto; Budi Utomo Wisesa; Masykur Masykur
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 5 No 2 (2023): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v5i2.236

Abstract

The Velocity Air Intake System is an important component in a motor vehicle engine, particularly in a 155cc engine. Its function is to optimize the airflow process to the throttle body or carburetor. However, many users or people tend to overlook the significance of improving engine performance by varying the model or replacing the velocity air intake system itself. One common issue is the diameter and shape of the airflow model, which can affect the power, torque, and exhaust emissions produced. Installing a velocity air intake system is one approach to achieve an efficient air delivery process into the combustion chamber. In our research conducted using a dyno test on a 155cc four-stroke engine, the results showed that using a 46 mm size yielded the highest power of 11.03 Hp and produced a torque of 12.39 N.m. Using a 47 mm size resulted in 11.02 Hp and decreased the torque to 12.28 N.m. With a 48 mm size, there was a decrease in power to 11.00 Hp and an increase in torque to 12.72 N.m, while using a 45 mm size led to a decrease in power to 10.09 Hp and produced a torque of 11.31 N.m.
Pengaruh Campuran Bioaditif Serai Wangi Pada Bensin RON 90 Terhadap Prestasi Mesin Dan Penghematan Bahan Bakar Sepeda Motor Budi Utomo Wisesa; M. Yasep Setiawan; Ahmad Arif; Ari Aryadi; Ichsan Nasution
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 4 No 1 (2023): 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.v4i1.197

Abstract

Citronella is a variety of bioadditives that are easily soluble and evaporate into fuel. The use of Bioadditives in fuel aims to improve engine performance and fuel economy. The method used in this research is an experiment with RON 90 Gasoline samples, and a mixture of Citronella Bioadditives with a ratio of S1-1.5%, S2-2.0%, S3-2.5%, S4-3.0%, and S5-3.5%. Engine performance testing using Sportdevice Dyno and impacted engine performance increased by 3.11% on the S4-3.0% type, and maximum torque increase reached 2.03% on the S2-2.0% ratio. The fuel economy test based on the distance traveled with 1000 ml of fuel volume per sample at an average speed of 40-60 km/h was able to achieve a savings of 20.93% on the S5-3.5% sample with a distance of 69.9 Km/l. This is different from RON 90 gasoline without citronella mixture can only be traveled as far as 57.8 km / l. Serai Wangi merupakan ragam bioaditif yang bersifat mudah larut dan menguap ke dalam bahan bakar. Pemakaian Bioaditif dalam bahan bakar bertujuan untuk meningkatkan performa mesin dan penghematan bahan bakar. Metode yang dipakai dalam riset ini adalah eksperimen dengan sampel Bensin RON 90, dan campuran Bioaditif Serai Wangi dengan rasio S1-1,5%, S2-2,0%, S3-2,5%, S4-3,0%, dan S5-3,5%. Pengujian performa mesin mengunakan Sportdevice Dyno dan memberi dampak prestasi mesin meningkat sebesar 3,11 % pada jenis S4-3,0%, dan kenaikan torsi maksimum mencapai 2,03 % pada rasio S2-2,0%. Uji Penghematan bahan bakar berdasarkan jarak yang ditempuh dengan 1000 ml volume bahan bakar setiap sampel pada kecepatan rata-rata 40-60 km/jam mampu meraih penghematan sebesar 20,93% pada sampel S5-3.5% dengan jarak tempuh sejauh 69,9 Km/l. Hal ini berbeda dibandingkan dengan bensin RON 90 tanpa campuran serai wangi hanya mampu ditempuh sejauh 57,8 Km/l.
Pemberdayaan Masyarakat melalui Pembentukan dan Penguatan Kelembagaan Kelompok Sadar Lingkungan sebagai Upaya Pelestarian Lingkungan di Nagari Sungai Batang Aldri Frinaldi; Boni Saputra; Desri Nora AN; Ichsan Nasution; Yose Fajar Pratama; Adil Mubarak; Syamsir Syamsir; Asnil Asnil; Angga Putra Tri Rezeki; Irvan Renaldi
JURNAL ABDIMAS SERAWAI Vol. 5 No. 3 (2025): Jurnal Abdimas Serawai (JAMS)
Publisher : Program Studi Administrasi Fakultas Ilmu Sosial dan Ilmu Politik Universitas Muhammadiyah Bengkulu 

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/jams.v5i3.10457

Abstract

This community service program aims to empower the community of Nagari Sungai Batang, Agam Regency, by establishing and strengthening the Environmental Awareness Group (POKDARLING) to preserve the local ecosystem. This initiative involves youth and community leaders as agents of change in environmental conservation. The method employed is the Participatory Rural Appraisal (PRA) approach, which includes surveys, discussions, lectures, brainstorming sessions, and mentoring, conducted over six months (January–June 2025). The results of the activity demonstrate the establishment of a legitimate POKDARLING organizational structure through Village Head Decree No. 26 of 2025, increased community knowledge regarding environmental awareness, as well as the formation of the Youth Forum for Environmental Care and the implementation of environmental cleanup actions, all serving as tangible evidence of the program’s success. This program is expected to serve as a model for community-based environmental management that other villages in the surrounding area can adopt.
Feasibility Evaluation of a 110 cc-Class Automatic Motorcycle Engine Cutaway for Supporting Practical Curriculum Implementation in Automotive Vocational Education Ichsan Nasution; Hasan Maksum; Waskito Waskito; Dwi Rangga Ariga
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 7 No 1 (2026): Vol 7 No 1 (2026) : 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.v7i1.323

Abstract

Automatic motorcycle engines are closed mechanical assemblies that limit students’ observation of internal components during vocational practice. This study developed and evaluated the feasibility of a 110 cc-class automatic motorcycle engine cutaway for supporting practical curriculum implementation in automotive vocational education. A Research and Development design with the ADDIE model was used. The product exposed key components, including the piston, cylinder, combustion chamber, crankshaft, valve mechanism, lubrication passages, and automatic transmission section, as a real-object medium for observing automatic engine mechanisms. Feasibility data were obtained from two media experts, two material experts, and responses from 25 Automotive Engineering students after limited implementation. Five-point Likert-scale data were analyzed descriptively. Media expert validation reached 86%, and material expert validation reached 90%, both categorized as highly feasible. Student responses reached 90%, categorized as very good. The cutaway was feasible and accepted, although learning effectiveness was not measured.
Pengaruh Campuran Bioaditif Serai Wangi Pada Bensin RON 90 Terhadap Prestasi Mesin Dan Penghematan Bahan Bakar Sepeda Motor Budi Utomo Wisesa; M. Yasep Setiawan; Ahmad Arif; Ari Aryadi; Ichsan Nasution
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 4 No 1 (2023): 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.v4i1.197

Abstract

Citronella is a variety of bioadditives that are easily soluble and evaporate into fuel. The use of Bioadditives in fuel aims to improve engine performance and fuel economy. The method used in this research is an experiment with RON 90 Gasoline samples, and a mixture of Citronella Bioadditives with a ratio of S1-1.5%, S2-2.0%, S3-2.5%, S4-3.0%, and S5-3.5%. Engine performance testing using Sportdevice Dyno and impacted engine performance increased by 3.11% on the S4-3.0% type, and maximum torque increase reached 2.03% on the S2-2.0% ratio. The fuel economy test based on the distance traveled with 1000 ml of fuel volume per sample at an average speed of 40-60 km/h was able to achieve a savings of 20.93% on the S5-3.5% sample with a distance of 69.9 Km/l. This is different from RON 90 gasoline without citronella mixture can only be traveled as far as 57.8 km / l. Serai Wangi merupakan ragam bioaditif yang bersifat mudah larut dan menguap ke dalam bahan bakar. Pemakaian Bioaditif dalam bahan bakar bertujuan untuk meningkatkan performa mesin dan penghematan bahan bakar. Metode yang dipakai dalam riset ini adalah eksperimen dengan sampel Bensin RON 90, dan campuran Bioaditif Serai Wangi dengan rasio S1-1,5%, S2-2,0%, S3-2,5%, S4-3,0%, dan S5-3,5%. Pengujian performa mesin mengunakan Sportdevice Dyno dan memberi dampak prestasi mesin meningkat sebesar 3,11 % pada jenis S4-3,0%, dan kenaikan torsi maksimum mencapai 2,03 % pada rasio S2-2,0%. Uji Penghematan bahan bakar berdasarkan jarak yang ditempuh dengan 1000 ml volume bahan bakar setiap sampel pada kecepatan rata-rata 40-60 km/jam mampu meraih penghematan sebesar 20,93% pada sampel S5-3.5% dengan jarak tempuh sejauh 69,9 Km/l. Hal ini berbeda dibandingkan dengan bensin RON 90 tanpa campuran serai wangi hanya mampu ditempuh sejauh 57,8 Km/l.
Bending Strength Analysis of Composite Materials with Coconut Fiber Reinforcement Using Manual Hand Lay-Up Method asrullah asrul; M. Yasep Setiawan; Hasan Maksum; Nuzul Hidayat; Edy Susanto; Ichsan Nasution
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 6 No 1 (2025): Vol 6 No 1 (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.v6i1.288

Abstract

This study investigates the mechanical performance of coconut coir fiber-reinforced composites with volume fractions of 30% and 40%, fabricated using the Manual Hand Lay-Up method. Specimens were tested under three-point bending following ASTM D790-03 to evaluate flexural strength. Results show that composites with a 30% fiber volume exhibit superior bending strength and stiffness compared to those with 40%, indicating a more optimal fiber–matrix ratio. The reduction in performance at higher fiber content is attributed to uneven resin distribution and inadequate fiber impregnation. These findings highlight the potential of coconut coir as a sustainable reinforcement material and emphasize the importance of optimizing fiber volume and manufacturing methods. The study recommends the use of alternative fabrication techniques, such as vacuum infusion, to improve resin homogeneity and mechanical reliability, particularly for structural and lightweight composite applications.
Pengujian Emisi CO dan HC pada Honda BeAT Injeksi Menggunakan Campuran Pertamax–Bioetanol Limbah Kulit Pisang dan Singkong Welman Saputra; Wawan Purwanto; M. Yasep Setiawan; Ichsan Nasution
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 4 No. 2 (2026): JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtpvi.v4i2.467

Abstract

Penelitian ini bertujuan membandingkan emisi gas buang Honda BeAT injeksi menggunakan Pertamax murni dan campuran Pertamax–bioetanol dari limbah kulit pisang serta limbah singkong. Metode yang digunakan adalah eksperimen kuantitatif deskriptif pada kondisi tanpa beban setelah mesin mencapai suhu kerja. Variasi bahan bakar meliputi E0, E5 pisang, E10 pisang, E5 singkong, dan E10 singkong. Pengujian dilakukan pada 1500, 3000, 4500, 6000, dan 7500 rpm dengan lima pengulangan. Parameter CO, CO₂, O₂, HC, lambda, dan AFR diukur menggunakan gas analyzer. Data dianalisis melalui rata-rata dan persentase perubahan terhadap E0. Hasil menunjukkan seluruh campuran bioetanol menurunkan rata-rata CO dan HC dibandingkan E0. E10 pisang menjadi variasi paling menonjol secara deskriptif, dengan CO 0,410% dan HC 98,67 ppm, atau turun 40,92% dan 48,01%. Temuan ini mengindikasikan potensi awal bioetanol limbah kulit pisang sebagai campuran Pertamax untuk menurunkan CO dan HC pada rentang rpm yang diuji. This study compared exhaust emissions of a fuel-injected Honda BeAT operated with pure Pertamax and Pertamax blended with banana-peel and cassava-waste bioethanol. A descriptive quantitative experimental method was applied under no-load conditions after the engine reached operating temperature. Five fuel variations were tested: E0, E5 banana, E10 banana, E5 cassava, and E10 cassava. Tests were conducted at 1500, 3000, 4500, 6000, and 7500 rpm with five replications. CO, CO₂, O₂, HC, lambda, and AFR were measured using a gas analyzer. Data were analyzed using mean values and percentage changes relative to E0. All bioethanol blends reduced average CO and HC compared with E0. E10 banana was the most prominent variation descriptively, with CO of 0.410% and HC of 98.67 ppm, corresponding to reductions of 40.92% and 48.01%. These findings indicate the preliminary potential of banana-peel bioethanol as a Pertamax blend to reduce CO and HC.
Co-Authors Adil Mubarak Ahmad Arif Aldri Frinaldi Angga Putra Tri Rezeki Ari Aryadi Asnil Asnil asrullah asrul Boni Saputra Budi Utomo Wisesa Dwi Rangga Ariga Edy Susanto Hasan Maksum Irvan Renaldi M. Yasep Setiawan M. Yasep Setiawan Masykur Masykur Nora. AN, Desri Nuzul Hidayat, Nuzul Purwanto, Wawan Syamsir Syamsir Waskito Welman Saputra Yose Fajar Pratama