Durability analysis of four-stroke motorcycle engines using juken BRT ECU and iridium spark plugs with bioethanol fuel
Keywords:
Bioethanol, Durability, ECU, Iridium, Spark plugAbstract
The heavy reliance on fossil fuels in Indonesia has accelerated the search for renewable and eco-friendly alternatives, such as bioethanol. This study aims to analyze the effect of using a programmable ECU and iridium spark plug with a 30% bioethanol–70% Pertalite fuel blend on the durability of four-stroke motorcycle engines. An experimental method was applied with three treatments: standard (no modification), treatment 1 (350° injection timing, 5° ignition timing), and treatment 2 (350° injection timing, 9° ignition timing). Durability tests were conducted for 20, 40, and 50 hours. The results indicate that treatment 2 produced the lowest carbon deposit, 150 mg with a volume of 83 mm³, compared to the standard treatment (680 mg and 378 mm³). These findings highlight that optimizing ignition timing and using bioethanol fuel blends can reduce carbon deposits, improve combustion efficiency, and extend engine lifespan.
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