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All Journal JTM-ITI (Jurnal Teknik Mesin ITI) Journal of Renewable Energy and Mechanics
Marbun, Jalyiamsep
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Automotive Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Analisis Sistem Injeksi Air/Metanol Dan Air/Etanol Terhadap Konsumsi Bahan Bakar dan Emisi Gas buang Marbun, Jalyiamsep
JTM-ITI (Jurnal Teknik Mesin ITI) Vol 4, No 3 (2020): Jurnal Teknik Mesin ITI
Publisher : Institut Teknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1079.653 KB) | DOI: 10.31543/jtm.v4i3.518

Abstract

Pengembangan mesin otomotif masa depan adalah bagaimana menemukan solusi untuk mengurangi emisi gas buang yang dihasilkan dan konsumsi bahan bakar yang lebih hemat. Telah banyak dilakukan berbagai penelitian dengan tujuan untuk mengurangi emisi gas buang dan konsumsi bahan bakar salah satu yang banyak diminati adalah dengan menggunakan sistem injeksi air. Sistem injeksi air langsung maupun tidak langsung mampu menurunkan emisi gas buang serta konsumsi bahan bakar dengan pemilihan konstruksi dan posisi sistem injeksi air yang tepat. Sistem injeksi tambahan air/metanol dan air/etanol digunakan untuk memaksimalkan sistem injeksi yang hanya menggunakan air yang sulit menguap. Metode yang digunakan pada penelitian ini adalah metode eksperimen dengan menguji sampel campuran air/metanol atau air/etanol dan mengumpulkan data uji coba kemudian melakukan analisis data konsumsi bahan bakar dan emisi gas buang. Hasil penelitian menunjukan emisi gas buang mengalami penurunan nilai HC yang cukup signifikan pada sampel AE10 sebesar 90%, gas CO juga berkurang sebesar 69,7% dan CO2 berada pada nilai 14,50% dan AFR yang berada pada angka 14,7:1. Konsumsi bahan bakar meningkat seiring peningkatan perbandingan H2O atau air pada campuran. Namun dengan peningkatan konsumsi bahan bakar tidak membuat emisi gas buang juga meningkat dengan menggunakan sistem injeksi AM dan AE.
An Experimental Study on the Effect of a Water Injection System on Performance, Specific Fuel Consumption, and Exhaust Gas Emissions in a 110 cc Gasoline Engine MARBUN, JALYIAMSEP; Mujahidin, Didin Mujahidin; Nashrul Chanief Hidayat
Journal of Renewable Energy and Mechanics Vol. 9 No. 01 (2026): REM VOL 9 No 01 2026
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRACT The increase in motor vehicle numbers in developing countries has led to higher fuel demand and increased exhaust emissions, requiring technologies to optimise combustion and reduce environmental impact. This study aims to evaluate the effects of injection systems on engine performance, fuel consumption, and exhaust emissions in 110 cc gasoline engines. The experiment compared two configurations: standard operation (STD) and water injection (H₂O), in which distilled water was sprayed at 15% of the fuel volume at 400 kPa, controlled by an Arduino-based PWM system. Exhaust emissions were measured using an HG-520 gas analyser; performance was tested on a dynamometer; and fuel consumption was evaluated through a 15 km road test. The results showed that water injection significantly reduced HC and CO emissions by 49.4% and 90%, respectively, while CO₂ remained stable and O₂ decreased by 74.60%, indicating more effective combustion. Engine performance improved, with power increasing by 6.26% and torque increasing by 6.26%. However, fuel consumption increased by 18.75%. Overall, water injection can improve combustion quality and engine output, but further optimisation is needed to improve fuel efficiency.  
Co-Authors Mujahidin, Didin Mujahidin Nashrul Chanief Hidayat