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All Journal AEEJ : Journal of Automotive Engineering and Vocational Education
Al-mukharom, Mohammad Rizky
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Automotive Engineering Control & Systems Engineering Education Energy Transportation

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Performance and Fuel Efficiency Evaluation of an Injection Converter Kit Retrofit on a 100cc Four-Stroke Engine Al-mukharom, Mohammad Rizky; Hadi, Samsul
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 6 No 1 (2025): Vol 6 No 1 (2025) : AEEJ : Journal of Automotive Engineering and Vocational Educa
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/aeej.v6i1.240

Abstract

This study investigates the effectiveness of an injection converter kit as a small engine retrofit for improving torque and fuel efficiency in a 100cc four-stroke motorcycle engine. An experimental method was applied using two fuel systems: a conventional carburetor and a retrofit converter kit. Torque and fuel consumption were measured across engine speeds ranging from 3000 to 7000 rpm using a dynamometer and volumetric analysis. The injection system achieved a peak torque of 6.78 N·m at 3600 rpm, exceeding the carburetor’s 5.90 N·m at 5300 rpm. It also demonstrated improved fuel economy at most RPM levels, with a spike at 6000 rpm due to overpressure. Statistical analysis via Two-Way ANOVA confirmed the significance of these differences. The results suggest that the injection converter kit is a viable small engine retrofit option for enhancing performance and efficiency in low-displacement motorcycles.
Co-Authors Samsul Hadi