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All Journal Jurnal Teknik Mesin, Industri, Elektro dan Informatika Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Naufal Dwi Qurniawan
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

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Pengaruh Penggunaan CDI Standar Dan CDI Digital Terhadap Daya Dan Torsi Motor Bensin 250CC Muhamad Nur Safi’i; Faris Naufal Hanif; Naufal Dwi Qurniawan; Adzandani Muhammad; Trisma Jaya Saputra
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 2 No. 3 (2023): September : JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v2i3.2071

Abstract

The purpose of this study was to determine the difference in power, torque and fuel consumption produced by a 250 cc CRF motorbike using standard CDI ignition and digital CDI with Pertamax fuel. The research method used was an experiment conducted on a 250 cc CRF motorbike. The research data were analyzed by directly observing the experimental results and then concluding and determining the results of the research that had been carried out in the form of graphs and tables. In testing the combustion engine, a chassis dynamometer is used to determine the power and torque produced, while to measure the level of fuel consumption using a graphimetric method, namely by weighing the consumption of fuel consumed during a certain time interval. The results of the study show that there is an influence on the performance of the combustion engine, power, torque, and fuel consumption produced in an internal combustion engine with standard CDI ignition variations and using a digital CDI for Pertamax fuel. Maximum motor fuel power produced by standard CDI ignition of 5.6 hp at 9000 rpm engine speed. The maximum engine combustion torque generated from the racing CDI ignition is 5.9 Nm at 6000 rpm engine speed. While the lowest fuel consumption when using digital CDI is 0.281 kg/hour. In conclusion, the greatest power is obtained when using a standard CDI, the greatest torque is obtained when using a digital CDI and the lowest fuel consumption can be obtained by using the right ignition, in this case using a racing ignition CDI.
Pengaruh Variasi Temperatur Proses Pirolisis terhadap Karakteristik Biopelet Berbahan Baku Arang Limbah Ampas Tebu dan Kulit Kopi Naufal Dwi Qurniawan; Arif Rahman Saleh; Rany Puspita Dewi
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 6 (2025): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v3i6.1240

Abstract

Increasing in energy demand and limited fossil fuel reserves have driven the use of environmentally friendly alternative energy sources. This study aims to analyze the effect of pyrolysis temperature variations on the quality of biopellets made from bagasse and coffee husks. The materials were prepared in a 50:50 ratio with the addition of 15% tapioca flour as a binder. The pyrolysis process was carried out at temperatures of 450°C, 500°C, and 550°C for 120 minutes in oxygen-free conditions. The biochar resulting from pyrolysis was formed into biopellets, which were then tested for proximate composition, calorific value, and combustion rate. The results showed that an increase in pyrolysis temperature had a significant effect on the characteristics of the biopellets. A temperature of 550°C produced the lowest moisture content (8.436%), the highest fixed carbon content (62.191%), the highest calorific value (6293 cal/g), and the highest combustion rate (0.05789 g/sec). Conversely, ash content increased with rising temperature, while volatile matter content decreased. Thus, the best biopellets were obtained at a temperature of 550°C. This study confirms the potential of bagasse and coffee husks as raw materials for biopellets through pyrolysis temperature optimization to support the development of sustainable biomass energy.
Co-Authors Adzandani Muhammad Arif Rahman Saleh Faris Naufal Hanif Muhamad Nur Safi’i Rany Puspita Dewi Trisma Jaya Saputra