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All Journal Prosiding Seminar Nasional Pascasarjana Jurnal Penelitian Teknologi Informasi dan Sains
Hadromi Hadromi
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Computer Science & IT Education

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Peningkatan Kualitas Pembelajaran Sistem Pengapian Transistor Dengan Menerapkan Multimedia Berbantuan Ulead Video Studio X Menggunakan Metode Discovery Learning Pada Pembelajaran Mahasiswa Teknik Mesin Unnes Dwi Nur Cahyono; Hadromi Hadromi
Prosiding Seminar Nasional Pascasarjana Vol. 3 No. 1 (2020)
Publisher : Pascasarjana Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Permasalahan dalam laporan ini adalah tentang penerapan multimedia berbantuan Ulead VideoStudio X dalam pembelajaran metode Discovery Learning pada mahasiswa Teknik Teknik UNNESuntuk meningkatkan kualitas pembelajaran sistem pengapian transistor. Penelitian ini bertujuanuntuk mengetahui peningkatan kualitas pembelajaran sistem pengapian transistor denganmenerapkan multimedia berbantuan video dalam pembelajaran metode Discovery Learning. Dalampenelitian ini desain penelitian menggunakan Quasi Eksperiment dengan model pre test-post testone group design. Populasi penelitian yaitu mahasiswa mata kuliah kelistrikan otomotif JurusanTeknik Mesin yang berjumlah 30 mahasiswa. Dari analisis data didapatkan ada perbedaan diantarahasil perhitungan sebelum dengan sesudah penggunaan multimedia berbantuan Ulead Video StudioX yang mengambil mata kuliah kelistrikan otomotif. Pada nilai rata-rata sebelum/pre testpenggunaan multimedia berbantuan Ulead Video Studio X adalah 59,48 sedangkan setelah/post testpenggunaan multimedia berbantuan Ulead Video Studio X adalah 78,23. Disimpulkan bahwadengan menggunakan multimedia berbantuan Ulead Video Studio X system pengapian transistorsudah lebih baik sejak prestasi belajar mahasiswa pada mata kuliah kelistrikan otomotif mengalamipeningkatan 23,97% dibandingkan sebelum pembelajaran menggunakan multimedia berbantuanUlead Video Studio X system pengapian transistor.
Pengaruh Variasi Air Fuel Ratio (AFR) dan Sudut Pengapian pada ECU Standar dan ECU Aftermarket terhadap Daya dan Torsi Sepeda Motor Honda Vario 125 LED Muhammad Najbanuhal Khakim; Hadromi Hadromi; Rizqi Fitri Naryanto
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4756

Abstract

This study aims to analyze the effect of variations in the Air Fuel Ratio (AFR) and Ignition Angle on the Standard ECU and Aftermarket ECU on the Power and Torque of the Honda Vario 125 LED Motorcycle. An experimental method was employed using a factorial design involving three factors: ECU type (standard and aftermarket), AFR variations (12.5, 13.5, and 14.7), and ignition timing variations (standard, +2°, and +4°). Testing was conducted using a chassis dynamometer to obtain engine power and torque data for each treatment combination. The experimental data were processed descriptively using Microsoft Excel through the calculation of mean values, comparison of results, and percentage changes in performance for each treatment variation. The results showed that the aftermarket ECU produced higher engine performance than the standard ECU, with average increases of 3.09% in power and 2.65% in torque. The maximum power of 13.70 HP was obtained from the combination of the aftermarket ECU, AFR 12.5, and +4° ignition timing, while the highest average torque of 11.90 Nm was obtained from the aftermarket ECU with an AFR of 13.5. These results indicate that variations in AFR and ignition timing affect engine performance characteristics; therefore, the use of an aftermarket ECU should be accompanied by appropriate AFR and ignition timing adjustments to achieve optimal engine performance.
Pengaruh Variasi Air Fuel Ratio dan Sudut Pengapian Menggunakan ECU Standar dan Aftermarket terhadap Emisi Gas Buang Motor Bensin 125 LED Ananda Bimo Satrio; Hadromi Hadromi; Rizqi Fitri Naryanto
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4757

Abstract

The increasing use of gasoline-powered motorcycles contributes to higher exhaust emissions that negatively affect air quality. One approach to reducing exhaust emissions is optimizing combustion parameters through the adjustment of the Electronic Control Unit (ECU), Air Fuel Ratio (AFR), and ignition timing. This study aimed to analyze the effect of standard and aftermarket ECUs with different AFR and ignition timing settings on the exhaust emissions of a gasoline motocycle 125 LED motorcycle. An experimental method with a factorial design was employed using two ECU types, three AFR levels (12.5, 13.5, and 14.7), and three ignition timing settings (standard, +2°, and +4°). Exhaust emissions were measured using a gas analyzer to determine carbon monoxide (CO) and hydrocarbon (HC) concentrations. The collected data were analyzed using descriptive statistics followed by a Three-Way Analysis of Variance (ANOVA). The results indicated that ECU type, AFR, and ignition timing significantly influenced CO and HC emissions. Appropriate adjustment of combustion parameters improved combustion efficiency, resulting in lower exhaust emissions. The combination of an aftermarket ECU with optimum AFR and ignition timing produced lower emissions than the standard ECU.
Pengaruh Variasi Air Fuel Ratio dan Sudut Pengapian Menggunakan ECU Standar dan ECU Aftermarket terhadap Konsumsi Bahan Bakar Motor Bensin 125 LED Setyadmaja, Daffa Ilham; Hadromi Hadromi; Rizqi Fitri Naryanto
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4869

Abstract

Fuel consumption efficiency is an important aspect of modern automotive technology because it is closely related to operational costs, energy efficiency, and environmental sustainability. In electronic fuel injection (EFI) engines, fuel consumption is influenced by combustion parameters such as the Air Fuel Ratio (AFR), ignition timing, and the Electronic Control Unit (ECU). This study aimed to analyze the effects of AFR variation and ignition timing using standard and aftermarket ECUs on the fuel consumption of a gasoline motorcycle 125 LED motorcycle. An experimental method with a factorial design was employed using two ECU types, three AFR settings (12.5, 13.5, and 14.7), and three ignition timing settings (standard, +2°, and +4°). Fuel consumption tests were conducted at engine speeds of 3000 rpm, 5000 rpm, and 7000 rpm. The obtained data were analyzed using descriptive statistics followed by Three-Way Analysis of Variance (ANOVA). The results indicate that AFR, ignition timing, and ECU type produce different fuel consumption characteristics at each engine speed. The combination of an aftermarket ECU with appropriate AFR and ignition timing settings provides better fuel consumption efficiency than the standard ECU.
Co-Authors Ananda Bimo Satrio Dwi Nur Cahyono Muhammad Najbanuhal Khakim Rizqi Fitri Naryanto Setyadmaja, Daffa Ilham