Tugas Akhir Mesin
Pengaruh Variasi Volume Silinder Piston Terhadap Emisi Gas Buang Motor Bensin 4 Tak 1 Silinder
Indonesia Energy Marathon Challenge (IEMC) or better known as Kontes Mobil Hemat Energi
(KMHE) race car is economical energy saving national level, followed by students throughout
Indonesia that aims to design, build, and for competition cars that are energy efficient, safe, and
environmentally friendly. This research aims to determine the effect of variations diameter pistons on
exhaust emissions and fuel consumption.
This research uses a gasoline engine single-cylinder four-stroke (Honda Supra 100 cc) with
variations in cylinder volume 100 cc, 90 cc, 60 cc and engine rotation 1500 rpm, 2500 rpm, 3500 rpm,
4500 rpm, 6000 rpm. Data were collected in transmission N, 1, 2, 3, and 4 each of the three
repetitions for each round engine rotation, using a gas analyzer 2400 ultra 4/5 IM Hanatech brand for
exhaust emission of CO and HC.
Based on data analysis, it can be concluded that with decreasing diameter of piston up to 60
cc can reduce exhaust emissions, especially CO, HC and fuel consumption. The highest HC exhaust
emissions was in 100 cc cylinder volume that is equal to 514.33 ppm while the lowest HC emissions
obtained in 60 cc cylinder volume at 49.67 ppm. The highest CO emission is obtained on 100 cc
cylinder volume by 4.64% volume, while the lowest CO emission is obtained on 60 cc cylinder volume
by 0.31% volume. The highest CO2 emissions obtained in 60 cc cylinder volume amounted to 17.60%
volume, while the lowest CO2 emission obtained at 100 cc cylinder volume amounted to 8.37%
volume, and the highest fuel consumption obtained in 100 cc cylinder volume at 0.65 kg/h, and the
lowest fuel consumption obtained in 60 cc cylinder volume by 0.06 kg/h.
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