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All Journal Rekayasa Mesin Journal of Mechanical Engineering, Science, and Innovation Prosiding Seminar Nasional Teknologi Industri Berkelanjutan
Rizal Mahmud
Institut Teknologi Adhi Tama Surabaya
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Optimizing Effect of Wavy Leading Edge (WLE) in Rectangular Wing and Taper Wing Iis Rohmawati; Hiroshi Arai; Hidemi Mutsuda; Takuji Nakashima; Rizal Mahmud
Journal of Mechanical Engineering, Science, and Innovation Vol 1, No 2 (2021): (October)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1251.569 KB) | DOI: 10.31284/j.jmesi.2021.v1i2.2296

Abstract

Experimental and numerical research have been performed to investigate the Wavy Leading Edge (WLE) effect on the rectangular wing. The WLE is inspired by humpback whale flipper morphology which is blunt and rounded in certain form pattern. This flipper shape plays an important role for its behaviour specially capturing their prey. This advantage could be applied to other systems such as fin stabilizers or wind turbines. Steady cases in various aspect ratios were conducted to find out the optimum effect of WLE with baseline NACA 0018 profile at Reynolds number 1.4 x 105. The chord length of the wing (c) was 125 mm. The WLE shape defined as wavelength (W) 8% of c and amplitude (d) is 5% of c. The aspect ratio (AR) variations were 1.6; 3.9; 5.1; 7.9 and 9.6.  A simple rectangular form of the wing was selected to analysis the WLE effect on the various ARs. The taper wing shape is applied to find out the WLE effect at the AR 7.9. three types of taper ratio (TR) are 0.1; 0.3 and 0.5. The results show that the WLE on the taper wing has better advantage to control the stall in steady case. Another impressive result was the WLE wing with AR 7.9 and TR 0.3 has the best lift coefficient and pressure distribution.Keywords: stall, wavy leading edge, steady case, rectangle wing, taper wing, aspect ratio. 
Pengaruh Bahan Bakar LPG Sistem Manifold Injeksi Terhadap Performa Single Cylinder Spark Ignition Engine Rizal Mahmud; Nasrul Ilminnafik; Apip Amrullah; Achmad Aminudin
Journal of Mechanical Engineering, Science, and Innovation Vol 1, No 1 (2021): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (405.399 KB) | DOI: 10.31284/j.jmesi.2021.v1i1.1757

Abstract

Penelitian ini merupakan penelitian lanjutan dari penelitian sebelumnya. Konversi dari bahan bakar minyak ke bahan bakar gas jenis LPG (Liquified Petroleum Gas) dengan menggunakan sistem injeksi tipe 1. Sistem injeksi tipe I atau disebut dengan manifold injection merupakan desain injeksi yang paling sederhana pengganti sistem karburator, dimana sistem ini diharapkan mampu memperbaiki pasokan bahan bakar yang dibutuhkan oleh mesin. Torsi dan daya mesin diperoleh dengan menggunakan peralatan chasis dynamometer. Bahan bakar yang digunakan dalam penelitian ini yaitu menggunakan bahan bakar minyak jensi premium dan bahan bakar gas jenis LPG. Hasilnya menunjukkan bahwa dengan menggunakan bahan bakar LPG injeksi tipe 1, terjadi penurunan torsi, daya mesin, dan spesifik konsumsi bahan bakar pada single cylinder spark ignition. Akan tetapi efisiensi thermal meningkat sebesar 6,38% dibandingkan dengan bahan bakar premium.
Pengaruh ECU (Electronic Control Unit) dan Variasi tipe Jumlah Hole Injector Terhadap Performa Engine Single Cylinder 4 Langkah Aureo Adriyanto Da Costa Amaral; Naili Saidatin; Rizal Mahmud; Iis Rohmawati
Prosiding SENASTITAN: Seminar Nasional Teknologi Industri Berkelanjutan Prosiding SENASTITAN Vol. 02 2022
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (313.35 KB)

Abstract

Study of Engine performance of vehicles was to be a complicated due to some influencing factors on it. Firstly, the entering stage of air-fuel into the combustion chamber, the combustion process, and thus after combustion to the exhaust stage. An important thing on the injection fuel system is ECU (Engine Control Unit) related to the function of the divided current controller; it is obtained to engine part. It part control lines from the fuel pump to injector. This study uses ECU variation (standard and Juken 5 racing turbo). The number of hole injector is commonly 6 and 8 and be investigated to the engine performance. In this case, dynamometer chassis were used to measure torque and engine power. The type of engine performed a 4 strokes-single-cylinder and powered by a fuel injection. The result shows the using ECU racing of the 8-hole injector has a significant effect on the engine performance; its performance appeared at engine power. These phenomena were also exhibited coincide single cylinder 4 strokes. Keywords: engine performance, ECU racing, and hole injector.
THE EFFECT OF SPARK PLUG GROUND ELECTRODE ON SPARK IGNITION ENGINE PERFORMANCE Zain Lillahulhaq; Rizal Mahmud; Safiullah Safiullah
Jurnal Rekayasa Mesin Vol. 13 No. 2 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i2.1093

Abstract

Motorcycle performance is influenced by many factors, including combustion chamber dimension, fuel characteristic, type of spark plug, spray flame, ignition timing, and the combustion chamber's cooling system to avoid incomplete combustion and knocking processes. The spark plug is an essential component of SIE. Several studies, such as spark plug gap, material type, multiple-ground Electrode, roughness, etc., have been conducted to examine the effect of spark plug modifications on the combustion process. Some previous research investigates the impact of a multiple-ground electrode spark plug in biofuel combustion. However, a study about the effect of multiple-ground electrode spark plugs on the gasoline combustion process has not been conducted. This research was conducted to determine the impact of multiple-ground electrode on Supra 125 cc performance. The data displayed in this study are power, torque, BHP, and BMEP in single, double, and triple ground electrode. The results showed that the double ground electrode spark plug produced better performance than other variations.
Co-Authors Achmad Aminudin Apip Amrullah Aureo Adriyanto Da Costa Amaral Hidemi Mutsuda Hiroshi Arai Iis Rohmawati Iis Rohmawati Naili Saidatin Nasrul Ilminnafik Safiullah Safiullah Takuji Nakashima Zain Lillahulhaq