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All Journal Jurnal Teknik Mesin Indonesia Otopro Quantum Teknika Journal of Vocational and Career Education AEEJ : Journal of Automotive Engineering and Vocational Education Journal of Vocational Education and Automotive Technology Jurnal Inovasi Pendidikan dan Teknologi Informasi (JIPTI) Tematik Journal of Automotive Technology Vocational Education MANGGALI
Fahmy Zuhda Bahtiar
Universitas Ivet
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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ANALISIS RE-MAPPING PADA MESIN SEPEDA MOTOR MATIC 4 TAK 110 CC MENGGUNAKAN KNALPOT CUSTOM TERHADAP PERFORMA Ayu Oktaviana Savitri; Sena Mahendra; Fahmy Zuhda Bahtiar; Fathur Rahman
Journal of Vocational Education and Automotive Technology Vol 7 No 2 (2025): Journal of Vocational Education and Automotive Technology
Publisher : Ivet University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/joveat.v7i2.4314

Abstract

Analysis of Re-mapping on a 110 CC 4 Stroke Automatic Motorcycle Engine Using a Custom Exhaust on Performance. Semarang. Mechanical Engineering Vocational Education. Faculty of Science and Technology. Ivet University Semarang. This research uses experimental methods and a quantitative approach. A descriptive data analysis technique that compares the effect of using a standard ECU and remapping 3 times with 2 types of exhaust on the performance of the Beat 110 cc motorbike. The research results show that (1) The highest torque when using a custom exhaust with a fuel flow of 2%, an ignition angle of 1º, a 9,000 rpm limiter produces 9.89 at 4,000 rpm, the torque increases by 2%; (2) The highest power when using a custom material discharge of 2%, 1º ignition angle, 9,000 rpm limiter produces 5.75 at 8,500 rpm, power increases by 8%; (3) The best specific fuel consumption (SFC) when using a custom exhaust and standard ECU reaches an increase of 68% at rpm 9,000; (4) In exhaust gas emissions, CO levels decreased very drastically by 2% in standard ECUs and using custom exhausts, the best CO2 in standard ECUs and custom exhausts with an increase of 18%, the best HC produced in remapping ECUs with custom exhausts experienced an increase of 25%. %, O2 has increased by 4% on ECU remapping with custom exhaust.
PENGARUH PENAMBAHAN KAPASITOR PADA SISTEM PENGAPIAN AC (ALTERNATING CURRENT) DAN VARIASI BUSI TERHADAP EMISI GAS BUANG PADA SEPEDA MOTOR 4 TAK 100 CC Supriyadi Supriyadi; Joko Suwignyo; Fuad Abdillah; Fahmy Zuhda Bahtiar
Journal of Vocational Education and Automotive Technology Vol 7 No 2 (2025): Journal of Vocational Education and Automotive Technology
Publisher : Ivet University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/joveat.v7i2.4318

Abstract

This research aims to determine the effect of adding capacitors and variations in spark plugs on the Exhaust Gas Emission content of the Honda Supra X 100cc motorbike. This research method uses an experimental method with descriptive statistics. The object used in this research is a 100cc Supra The place of research was carried out at the PVTMO Ivet Semarang Automotive Workshop. The technique used in collecting data is conducting experiments by testing the objects to be studied and recording the necessary data. Data analysis in this research uses descriptive statistics, namely describing or describing the data that has been collected as it is without making general conclusions or generalizations. The resulting data includes the amount of CO, HC, CO2, O2, lambda, and AFR. The research results showed that the highest CO gas content was produced by Spark Plug Racing using additional capacitors with an average value of 6.80%. Meanwhile, the lowest CO gas content is created by original or standard spark plugs without using additional capacitors with an average value of 5.93%. Meanwhile, the highest HC was produced by Racing Spark Plugs using additional capacitors with an average value of 485 ppm, almost the same as that produced by original spark plugs with the addition of capacitors. Meanwhile, the lowest HC gas content is produced by original or standard spark plugs without using additional capacitors with an average value of 378 ppm.
PENGARUH RE-MAPPING ECU DENGAN VARIASI BUSI TERHADAP PERFORMA MESIN MATIC 150 CC Ridwan Novianto; Sena Mahendra; Fahmy Zuhda Bahtiar; Diana Langgeng Mustikawati
Journal of Vocational Education and Automotive Technology Vol 7 No 2 (2025): Journal of Vocational Education and Automotive Technology
Publisher : Ivet University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/joveat.v7i2.4315

Abstract

Technological advances in the automotive industry encourage humans to produce new innovations. including motorbikes with an EFI system. The EFI system at the factory is considered not to produce maximum power, therefore it is necessary to re-map the ECU on EFI system vehicles. The research results show that (1) The highest torque is when using racing spark plugs with a fuel mapping of 3%, an ignition angle of 1°, the torque increases by 11% at 4,000 rpm; (2) Highest power at 3% fuel mapping, 1° ignition angle with racing spark plugs, power increases 9% at 5,000 rpm; (3) The best SFC when using racing spark plugs and ECU remapping fuel at 5%, 2° ignition angle, achieves a reduction of 13% at 6,000 rpm; (4) In exhaust gas emissions, CO levels decreased by 59% in standard ECUs with racing spark plugs, the lowest CO2 in fuel mapping ECUs with 10% ignition angle 3° standard spark plugs, HC experienced the highest reduction of 15% with standard spark plugs in fuel mapping ECUs. 5% ignition angle 2°. The lowest O2 reduction is 40% when using ECU fuel mapping 3% ignition angle 1° standard spark plug.
Dampak Kadar Hardener Dan Jenis Thinner (Nc) Terhadap Hasil Lapisan Pengecatan Pada Cat Nitrocellulose (Nc) Fahmy Zuhda Bahtiar; Fahmy Fatra; Heru Sugiantoro; Riko Diki Arwanto
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.v4i1.202

Abstract

This study aims to determine the effect of hardener volume and NC thinner types (super and ND) on the coating results, such as adhesion, gloss, hardness, and gasoline resistance to nitrocellulose paints (NC). This study used 5ml, 10ml, and 15ml of hardener volume variations with super and ND thinner types. The object of this research is nitrocellulose paints. This study found that the best adhesion test was produced at 5ml, 10ml, and 15ml of hardener volumes using super and ND thinners classified as 5B or 0% (percent area removed). For the best gloss test, the hardener volume was 15ml using super thinner with an average yield of 33,3 GU (Gloss Unit). The best hardness test was produced at volumes of 5ml, 10ml, and 15ml using super and ND thinners, while the best result for gasoline resistance testing was produced at volumes of 5ml, 10ml, and 15ml using super and ND thinners. Penelitian ini bertujuan untuk mengetahui pengaruh volume hardener dan penggunaan thinner jenis NC (super dan ND) terhadap hasil coating seperti gloss, adhesi, hardness dan gasoline resistance terhadap cat NC. Penelitian ini menggunakan variasi volume hardener 5ml, 10ml dan 15ml dengan penggunaan jenis thinner super dan ND. Obyek penelitian ini adalah cat nitroselulosa merek steel gloss. Hasil pada penelitian ini didapatkan bahwa uji adhesi terbaik dihasilkan pada semua variasi volume hardener dengan menggunakan thinner super dan ND yang tergolong klasifikasi 5B atau 0%. Untuk uji kilap terbaik diperoleh pada volume hardener 15ml dengan menggunakan super tiner dengan yield rata-rata 33,3 GU (Gloss Unit). Uji kekerasan terbaik dihasilkan pada semua variasi volume menggunakan tiner super dan ND, sedangkan hasil terbaik untuk pengujian gasoline resistance dihasilkan pada semua variasi volume hardener menggunakan tiner super dan ND.
Pemberdayaan Masyarakat Melalui Program Service Motor Gratis Untuk Meningkatkan Kesadaran Perawatan Berkala di Kelurahan Mijen Kota Semarang Jati Hidayatullah; Muhammad Faris Setiawan; Fahmy Zuhda Bahtiar; Budiyanto Budiyanto; Toni Setiawan
Manggali Vol 6 No 1 (2026): Manggali
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/manggali.v6i1.4374

Abstract

Kegiatan pengabdian kepada masyarakat oleh mahasiswa dan dosen yang dialaksanakan dalam upaya untuk meningkatkan kesadaran bagi warga. Kegiatan tersebut dilaksanakan dalam bentuk layanan service motor gratis bagi warga RT 03 RW 06 Kelurahan Mijen, Kecamatan Mijen, Kota Semarang. Kegiatan berlangsung pada 21 September 2025 di Balai RT 03 RW 06. Tujuan kegiatan ini adalah untuk meningkatkan kesadaran warga terhadap perawatan sepeda motor secara berkala, praktik atau implementasi secara langsung ke masyarakan oleh mahasiswa, dan mempererat hubungan antara perguruan tinggi dengan masyarakat. Hasil kegiatan menunjukkan 75% warga mengetahui cara merawat sepeda motor secara berkala sehingga meningkatkan kesadaran dalam upaya perawatan preventif.
Pelatihan Teknik Pencampuran Cat untuk Siswa Sekolah Menengah Kejuruan Program Keahlian Teknik Otomotif Fahmy Zuhda Bahtiar; Nuraedhi Apriyanto; Joko Suwignyo; Budiyanto
TEMATIK Vol. 6 No. 2 (2026): Juli
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/tematik.v6i2.14675

Abstract

Siswa SMK yang telah melakukan magang di PT. Triangle Motorindo (VIAR) belum memiliki pengetahuan dan keterampilan tentang perbandingan campuran cat, thinner dan hardener yang tepat  sehingga mengalami kesulitan adaptasi saat magang di industri. Kegiatan pengabdian ini bertujuan meningkatkan pengetahuan dan keterampilan 10 siswa SMK melalui p elatihan teknik pengecatan dengan metode pre-test dan post-test. Pelatihan dilaksanakan selama 2 hari di Laboratorium Teknik Universitas Ivet meliputi teori komponen cat dan praktik tiga variasi rasio campuran (1:1,1:0,25; 1:1,2:0,25; 1:1,3:0,5). Hasil menunjukkan peningkatan pengetahuan dari 43,5% menjadi 83,0% dengan seluruh peserta (100%) mencapai kriteria >80%, dan seluruh peserta dinyatakan kompeten dalam pencampuran cat. Rasio 1:1,3:0,5 memberikan hasil terbaik. Kegiatan ini penting karena dapat menjadi model pelatihan pra-magang bagi siswa SMK sebelum terjun ke industri.
Co-Authors AL Hafidz, Miftah Ayu Oktaviana Savitri Bahtiar Rahmat Bima Putra Santoso Budiyanto Budiyanto Burhan, Nurul Diana Langgeng Mustikawati Fathur Rahman Fatra, Fahmy Fuad Abdillah Heru Sugiantoro Irwan Setyo Prabowo Jati Hidayatullah Joko Suwignyo Katiko Imamul Muttaqin M. Khumaedi Moh Khoirul Bahar Mohammad Burhan Rubai Wijaya Mohammad Burhan Rubai Wijaya Muhammad Faris Setiawan Novi Nur Laeli Qodriyah Nuraedhi Apriyanto Ridwan Novianto Riko Diki Arwanto Rodia Syamwil Sena Mahendra Supriyadi Supriyadi Toni Setiawan Yuris Bahadur Wirawan Yuris Bahadur Wirawan