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All Journal FLYWHEEL : Jurnal Teknik Mesin Untirta Journal of Mechanical Engineering Science and Technology Briliant: Jurnal Riset dan Konseptual Turbulen : Jurnal Teknik Mesin JOURNAL OF SCIENCE AND APPLIED ENGINEERING Jurnal Elemen Jurnal Energi dan Teknologi Manufaktur Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Jurnal Pengabdian Masyarakat Indonesia Jurnal Pengabdian dan Pemberdayaan Nusantara (JPPNu) Bulletin of Community Engagement Logic : Jurnal Rancang Bangun Dan Teknologi Asian Journal Science and Engineering Jurnal Teknik Ilmu dan Aplikasi Journal of Mechanical Engineering Jurnal Polimesin Jurnal Pengabdian Kepada Masyarakat Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Venus: Jurnal Publikasi Rumpun Ilmu Teknik Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer Evrimata: Journal of Mechanical Engineering Journal of Community Engagement
Eko Yudiyanto
Politeknik Negeri Malang
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Journal : Asian Journal Science and Engineering

 1 
The Effect of Fuel Pump Pressure and Number of Injector Holes on 150cc Matic Motorcycle Performance Santoso, Santoso; Yulianto, Fian Arif; Yudiyanto, Eko; Aditya, Candra; Sabarudin, Suriansyah
Asian Journal Science and Engineering Vol. 2 No. 2 (2023): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v2i2.1020

Abstract

This study aims to evaluate the effects of increasing fuel pump pressure and varying the number of holes in the injector on engine performance. The fuel system in the engine has evolved from carburettor to injection system to improve the efficiency of fuel usage. In this study, the fuel pump pressure was increased to three levels, namely 2.5 bar, 3 bar, and 3.5 bar. In addition, variations in the number of holes in the injector were also tested using 3-hole, 6-hole, and 8-hole injectors. Engine performance was evaluated based on the power and torque produced. The research method used is experimental with power and torque measurements as engine performance data. The results showed that increasing fuel pump pressure and varying the number of holes in the injector had a significant effect on engine performance. Increasing the fuel pump pressure to 3.5 bar results in an increase in engine power and torque. The best power test results were obtained at a fuel pump pressure of 3 bar with a combination of 6-hole injectors, producing a maximum power of 11.63 HP at 6000 rpm engine speed. While the best torque test results were obtained at a fuel pump pressure of 3.5 bar with a combination of 3-hole injectors, producing a maximum torque of 43.10 Nm at 3000 rpm. The variation in the number of holes in the injector shows that the use of injectors with more holes tends to increase engine power and torque. Keywords: Engine Performance, Fuel Pump Pressure, Fuel Efficiency Injector Holes, Injection System
Surface Analysis and Material Elements in the Excavator Tooth Bucket which is affected by corrosion with the SEM and EDX method yudiyanto, eko; Susilo, Sugeng; Sulistyono, Sulistyono
Asian Journal Science and Engineering Vol. 3 No. 1 (2024): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v3i1.1761

Abstract

Corrosion in excavator tooth buckets is a major issue in the heavy equipment industry, especially in mining and construction. Exposure to water, humidity, and chemicals accelerates corrosion, reducing strength and wear resistance, which shortens component life and lowers operational efficiency. This study analyzes surface structure and material composition changes due to corrosion, aiming to enhance material durability through better selection and design. Using Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDX), corrosion effects on S45C steel were examined at up to 5000x magnification. The results show increased oxygen (O) from 3.56 WT% to 25.53 WT% and decreased iron (Fe) from 84.21 WT% to 59.35 WT%, indicating severe oxidation. Identified corrosion types include uniform and gap corrosion, highlighting the need for corrosion-resistant materials and protective coatings to improve excavator reliability
Co-Authors Adikusuma, Thomas Agus Hardjito Agus Setiawan Agus Sujatmiko Agus Winoko, Yuniarto Akhlis Rizza, Muhammad Alauddin, Falih Amrullah, Radhi Nurvian Amrullah, Utsman Syah Anis Roisatin, Umi Annisa Fatimah Asrori , Asrori Asrori Asrori Bagus Wahyudi BAYU PRANOTO Cahyono, Aldio Dita Candra Aditya Dani, Agus Deny Arisandi Duratun Nasiqiati Rosady, Siti Dwi Saputra, Luqman Eka Perkasa, Rilis Elka Faizal Etik Puspitasari, Etik Faizal, Elka Falih Alauddin Fatkhur Rohman Gumelar, Briyan Adit gumono Gunawan, Chandra Habibi, Krisna Hadi Susilo, Sugeng Harie S Jaya Haris Puspito Buwono Indra Kurniawan, Bakti Khambali Khambali Khambali, Khambali Kris Witono Kurniawan Kurniawan Lisa Agustriyana Listiyono Marta, Akbar Andika Mochammad Muzaki Mohammad Dzakiyul Fikri Mohammad Noor Hidayat Muhammad Afif Bahrain Muhammad Ammar Muhammad Arif Nur Huda Muhammad Fakhruddin Nila Alia Nugroho, Pipit Wahyu Nurhadi Pebrianti, Dwi Pondi Udianto Pranoto, Bayu Purwoko Purwoto, Eko R.N. Akhsanu Takwim, R.N. Akhsanu Rahmad, Cahya Raihan Insan Nararya Ridho Surya Setiabudi Rifa’i, Muhamad Rizki Priya Pratama, Rizki Priya SANTOSO SANTOSO Santoso Santoso Saputra, Luqman Dwi Sarjiyana Sarjiyana Satworo Adiwidodo Sharif, Safian Sugeng Hadi Susilo Sugeng Hadi Susilo Sugeng Susilo, Sugeng Suhaimi, Mohd Azlan Sulistyono Sulistyono Suriansyah Sabarudin Suryanto Suryanto Susilo, Sugeng Hadi Syamsul Hadi Syamsul Hadi Syamsul Ph.D M.A. Hadi Talifatim Machfuroh, Talifatim Walid, Achmad Weddakarti, Eva Wirawan , Wirawan Yulianto, Fian Arif Zuhria Kautzar, Galuh