Najam Miftahul’Ulum, . (2026) PENGUJIAN SISTEM DUAL FUEL LPG-ETHANOL DENGAN VARIASI WAKTU PENGAPIAN DAN DURASI INJEKSI BERBASIS ECU STANDARD REMAP TERHADAP KINERJA MOTOR 110 CC FI. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.
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Abstract
Peningkatan penggunaan kendaraan bermotor menuntut pengembangan bahan bakar alternatif yang lebih efisien dan ramah lingkungan. Salah satu solusi yang dikaji dalam penelitian ini adalah penerapan sistem dual fuel LPG–ethanol pada sepeda motor injeksi. Penelitian ini bertujuan untuk menganalisis pengaruh variasi waktu pengapian dan durasi injeksi berbasis ECU standar remap terhadap kinerja mesin sepeda motor 110 cc Fuel Injection (FI).Variabel bebas pada penelitian ini meliputi variasi waktu pengapian 12,5°, 15°, dan 17,5° before top death center (BTDC), serta variasi durasi injeksi minimum, standar, dan maksimum. Variabel terikat yang diamati adalah torsi, daya, konsumsi bahan bakar spesifik (SFC), serta emisi gas buang karbon monoksida (CO) dan hidrokarbon (HC). Pengujian dilakukan menggunakan dynamometer, flow meter, dan gas analyzer. Hasil penelitian menunjukkan bahwa variasi waktu pengapian dan durasi injeksi berpengaruh terhadap kinerja mesin dan emisi gas buang. Konfigurasi waktu pengapian 17,5° BTDC dengan durasi injeksi standar menghasilkan kinerja paling optimal, ditandai dengan peningkatan torsi dan daya, konsumsi bahan bakar yang relatif efisien, serta emisi CO dan HC yang lebih rendah dan masih memenuhi batas standar emisi. Penelitian ini diharapkan dapat menjadi acuan pengembangan sistem dual fuel LPG – ethanol yang lebih efisien dan ramah lingkungan. ***** The increasing number of motor vehicles requires the development of more efficient and environmentally friendly alternative fuels. One solution examined in this study is the application of an LPG–ethanol dual fuel system in fuel-injected motorcycles. This study aims to analyze the effect of ignition timing and injection duration variations based on standard ECU remapping on the performance of a 110 cc Fuel Injection (FI) motorcycle engine.The independent variables in this study are ignition timing variations of 12.5°, 15°, and 17.5° before Top Dead Center (BTDC), as well as minimum, standard, and maximum injection durations. The dependent variables observed include torque, power, specific fuel consumption (SFC), and exhaust emissions of carbon monoxide (CO) and hydrocarbons (HC). The tests were conducted using a chassis dynamometer, flow meter, and gas analyzer. The results show that variations in ignition timing and injection duration significantly affect engine performance and exhaust emissions. The ignition timing of 17.5° BTDC with standard injection duration provides the most optimal performance, characterized by higher torque and power, relatively efficient fuel consumption, and lower CO and HC emissions that still comply with emission standards. This study is expected to serve as a reference for the development of efficient and environmentally friendly LPG – ethanol dual fuel systems for motorcycles.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Additional Information: | 1. Dr. Darwin Rio Budi Syaka, M.T. 2. Dr.Ir.Ragil Sukarno, M.T.,IPM |
| Subjects: | Teknologi dan Ilmu Terapan > Teknik Mesin, Mekanika Teknik Teknologi dan Ilmu Terapan > Teknik Energi |
| Divisions: | FT > S1 Pendidikan Teknik Mesin |
| Depositing User: | Najam Miftahul'ulum . |
| Date Deposited: | 03 Feb 2026 07:32 |
| Last Modified: | 03 Feb 2026 07:32 |
| URI: | http://repository.unj.ac.id/id/eprint/64785 |
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