Samsudin Anis
Department of Mechanical Engineering, Universitas Negeri Semarang, Indonesia

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Experimental Study of PGC-01 Grounding Cable Addition on Urate Evo-7 Engine Wiring System by Pandawa Team Ahmad Khusom Kurniawan; Samsudin Anis; Muhammad Bagus Laroybafih; Yasiru Pisawalus Samak; Dziki Early Al Husni; Ilham Ariosepto Nugroho
Journal of Creativity Student Vol. 9 No. 3s (2026): Special Edition
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jcs.v9i3s.59513

Abstract

The ever-increasing demand for fossil fuels and the environmental impact of electric vehicles have driven innovation in Internal Combustion Engine (ICE) efficiency. This study explores the effect of installing a silver-based PGC-01 grounding cable on the engine wiring system of the Urate Evo-7 Pandawa Team energy-efficient vehicle. This study employed an experimental method with three different installation schemes. Scheme 1 connects the battery to the negative ignition coil and the throttle body sensor. Scheme 2 connects the battery to the negative ignition coil and the crankcase. Scheme 3 connects the battery to the negative ignition coil and the negative spark plug. Testing was conducted statically at 3000 rpm and dynamically with acceleration variations of 0–30 km/h, 0–35 km/h, and 0–40 km/h. The results show that Scheme 3 has the greatest impact on reducing fuel consumption. The reduction reached 12.1% in the static test and 16% in the dynamic acceleration test from 0 to 35 km/h. This makes it the most optimal configuration for the “kill and run” strategy in energy-efficient vehicle competitions.
Effect of Sediment Filter Pore-Size Variation in a Reverse Osmosis System on Treated Water Quality Naufal Zuhair Tarim Ramadhan; Deni Fajar Fitriani; Samsudin Anis
Journal of Creativity Student Vol. 9 No. 3s (2026): Special Edition
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jcs.v9i3s.59845

Abstract

Drinking-water quality is commonly evaluated from its dissolved-solids content, pH, turbidity, and color. Although reverse osmosis (RO) can substantially improve these characteristics, stable performance depends on feed-water conditions and appropriate pretreatment. This experiment examined whether sediment-cartridge pore size altered the quality of water produced by a small RO unit. Cartridges rated at 5, 3, and 1 micrometers were tested. TDS, pH, and turbidity were the primary response variables, while color was included as a supporting indicator. The untreated feed contained 18 mg/L TDS, had a pH of 7.44, turbidity of 0.38 NTU, and color of 11 TCU. Bottled drinking water, assessed only as a benchmark, contained 235 mg/L TDS, had a pH of 7.93, turbidity of 0.07 NTU, and color of 2 TCU. With the 5-micrometer cartridge, the RO product recorded 26 mg/L TDS, pH 7.40, turbidity of 0.05 NTU, and color of 4 TCU. Corresponding results for the 3-micrometer cartridge were 11.3 mg/L, 7.66, 0.53 NTU, and 3 TCU; for the 1-micrometer cartridge, they were 11.7 mg/L, 7.63, 0.57 NTU, and 3 TCU. The 3-micrometer configuration produced the lowest TDS, whereas the 5-micrometer configuration produced the lowest turbidity. Thus, pore-size variation was associated with observable differences under the test conditions. Because measurements were not replicated, these patterns should be verified through repeated trials before a causal effect is inferred.