EFEK WAKTU INJEKSI DAN DURASI INJEKSI TERHADAP PERFORMA DAN EMISI MESIN DIESEL R180 DI BERBAGAI KONDISI DIESEL-ETANOL

Fahri Ali Alfarizi, . (2026) EFEK WAKTU INJEKSI DAN DURASI INJEKSI TERHADAP PERFORMA DAN EMISI MESIN DIESEL R180 DI BERBAGAI KONDISI DIESEL-ETANOL. Skripsi thesis, Universitas Pembangunan Nasional Veteran Jakarta.

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Abstract

This study aims to analyze the effect of injection timing and injection duration variations on the performance and exhaust emissions of an R180 diesel engine using diesel fuel and a diesel-ethanol blend. The research method was conducted numerically using Diesel-RK software with validation against engine catalog data, where the simulation deviation was below 5%. The variations applied were injection timing and injection duration at specific angles, as well as ethanol blends at an engine speed of 2600 rpm. The results showed that the highest maximum power was obtained with pure diesel fuel and injection timing, while with a 5% diesel-ethanol blend, maximum power was obtained under the same conditions. Increasing the injection duration caused a 10-15% decrease in power for all fuel variations. The lowest specific fuel consumption (SFC) value was recorded in the 5% diesel-ethanol mixture, while an increase in the ethanol fraction increased the SFC due to a decrease in the fuel calorific value. In terms of emissions, the use of diesel-ethanol mixtures showed a tendency to reduce NOx and CO₂ emissions compared to pure diesel, especially at shorter injection durations. Overall, the optimal combination with ethanol blends is the best condition for producing high engine performance with lower fuel consumption and exhaust emissions in the R180 diesel engine Keyword : Injection Timing, Injection Duration, Diesel Engine R180, Engine Power, Emissions

Item Type: Thesis (Skripsi)
Additional Information: No.Panggil: 2110313034] [Pembimbing: Fathin Muhammad Mahdhudhu] [Penguji 1: Fakhri Akbar Ayub] [Penguji 2: Fajri Ashfi Rayhan]
Uncontrolled Keywords: Injection Timing, Injection Duration, Diesel Engine R180, Engine Power, Emissions
Subjects: T Technology > TJ Mechanical engineering and machinery
V Naval Science > V Naval Science (General)
Divisions: Fakultas Teknik > Program Studi Teknik Perkapalan (S1)
Depositing User: FAHRI ALI ALFARIZI
Date Deposited: 17 Mar 2026 07:59
Last Modified: 17 Mar 2026 07:59
URI: http://repository.upnvj.ac.id/id/eprint/42605

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