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All Journal Jurnal Kalpika International Journal of Industrial Innovation and Mechanical Engineering
DENNY PRUMANTO
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Astronomy Automotive Engineering Computer Science & IT Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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ANALISIS KEGAGALAN GEOMETRI KOMPONEN BRACKET HINGE CAB PADA PROSES BORING DIMESIN CNC MILLING OKK VC51 Kupainudin; Denny Prumanto; Rani Anggraeny
KALPIKA Vol 19 No 2 (2022): Jurnal KALPIKA
Publisher : Universitas Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/kalpika.v19i2.45

Abstract

The Boring Process of Hinge Cab Bracket components is one of the machining processes at PT. MMI.Boring work is the process of enlarging the hole to the desired size and usually pays less attention togeometric deviations from the results of the boring process, even though it greatly affects the quality of themachining results. In general, a spherical profile is said to be perfectly round if the distance of the pointscontained in the geometric shape have the same distance from a point called the center point. The purpose ofthe study was to determine the effect of spindle speed and feeding speed on the geometric size of the barcketcomponent. The method used in this research is an engineering study with experiments and data collection iscarried out through field observations and analysis of ongoing programs. The independent variable in thisstudy was 0.1 mm infeed depth, with spindle rotation parameters of 400 rpm, 500 rpm, 600 rpm, 700 rpmand 800 rpm. The dependent variable is the geometric deviation of the Bracket Hinge Cab boring results.The control variable is the insert type TNMG332-GN LC5010 which has a feed speed (fz) of 0.1 mm/rev anda roughing size of 104 ±0.30, coolant damin water and ecocool 2700T. The measurement method uses a boregauge/cylinder gauge to determine the effect of variations in machining parameters on the geometry of theboring results with a tolerance of ± 0.30 mm and takes 4 axes of measurement, namely X, Y, X', Y'. From theresearch that has been done that the parameter with the smallest geometric deviation is obtained in the fourparts with a spindle rotation (n) 700 rpm, which is the expected result because the geometric deviation is70μm, still within the tolerance limit of ± 0.30 mm and has a roughness level of 9.278 Ra. The greater thevalue of the cutting speed (Vc), the smaller the geometric deviation that occurs. To get good results based onthe analysis and for results that are in accordance with the standard, the best Rpm is used at 700 rpm withFeeding 140 mm/minute.
Design and Performance Evaluation of a Wet Cell HHO Generator as a Fuel Supplement for a Four-Stroke 125 cc Gasoline Engine Moh. Ali Sidik; Komarudin Komarudin; Denny Prumanto; Muhammad Iqbal Rasyid Ramadhan; Andi Mamonto
International Journal of Industrial Innovation and Mechanical Engineering Vol. 3 No. 3 (2026): August: International Journal of Industrial Innovation and Mechanical Engineeri
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijiime.v3i3.419

Abstract

The increasing use of gasoline-powered motorcycles contributes significantly to fuel consumption and exhaust emissions, particularly carbon monoxide (CO) and hydrocarbons (HC). One approach to improving combustion efficiency is the utilization of oxyhydrogen (HHO) gas as a supplementary fuel. This study aimed to design and evaluate the performance of a wet cell HHO generator as a fuel supplement for a 125 cc four-stroke gasoline engine. The developed system employed an 11-plate Stainless Steel 316L wet cell reactor with a 1.5 mm electrode gap and a 2% potassium hydroxide (KOH) electrolyte solution. The HHO generator was operated at a constant current of 2.5 A. Experimental testing included HHO production rate measurement, chassis dynamometer testing, specific fuel consumption (SFC) evaluation, and exhaust emission analysis under standard and HHO-assisted operating conditions. The functional test results showed that the reactor produced HHO gas at a stable average rate of 43.88 ml/min. Performance testing indicated that HHO supplementation increased average engine torque by 20.39% and average power output by 17.31%. In addition, the average SFC was reduced by 46.5%, indicating improved fuel utilization efficiency. Exhaust emission measurements revealed a reduction in average CO emissions from 2.01% to 0.56% and HC emissions from 376 ppm to 228 ppm. These findings demonstrate that the proposed wet cell HHO generator operated reliably and effectively enhanced engine performance, improved fuel economy, and reduced exhaust emissions in a 125 cc four-stroke gasoline engine.
Co-Authors Andi Mamonto Komarudin Komarudin Kupainudin Moh. Ali Sidik Muhammad Iqbal Rasyid Ramadhan Rani Anggraeny