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Roy Lamrun Sianturi
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roylamrunsianturi@gmail.com
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+6282286672408
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International Journal of Energy Systems and Materials Innovation
Published by Gio Vani Publisher
ISSN : -     EISSN : 31241514     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Energy Industrial & Manufacturing Engineering Mechanical Engineering
The scope of the journal covers topics related to: Acoustical engineering, Aerospace engineering, Automotive engineering, Energy Engineering, Manufacturing engineering, Materials Science and Engineering, Microscopy, Power plant engineering, Thermal engineering, Vehicle engineering
Arjuna Subject : Energi (semua kategori) - Energi Terbarukan, Keberlanjutan dan Lingkungan
Articles 12 Documents
 1   2 
The Combustion Characteristics and Exhaust Gas Emissions of Stationary Diesel Engines Fueled with A Mixture of Diesel Fuel (Cinnamon Oil and Basil Oil) Melinda, Tiara; Roy Lamrun Sianturi; Rinaldo Hasudungan Malau
International Journal of Energy Systems and Materials Innovation Vol. 1 No. 2 (2026): Edition January- April IJESMI
Publisher : Gio Vani Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17524/ijesmi.v1i2.21

Abstract

The depletion of fossil fuels and strict emissions regulations have driven the need for renewable additives that can improve diesel combustion while reducing pollutants. This study experimentally examined the combustion characteristics and exhaust emissions of diesel fuel mixed with cinnamon oil and basil oil as dual additives in a single-cylinder stationary diesel engine. The essential oils were mixed into the diesel fuel at concentrations of 5%, 10%, and 15%, either individually or in combination, and tested at 1500 rpm with load variations of 0-100%. The results showed that the 10% dual additive mixture (DCB10) provided the best performance with a reduction in CO and HC emissions of 40.9% and 32.1%, respectively, compared to pure diesel fuel. However, NOx emissions increased by 8.5% due to high combustion temperatures and oxygen availability. The synergistic effects of the low viscosity of cinnamon oil and the antioxidant properties of basil oil improved atomization and oxidation kinetics, resulting in more complete combustion. Despite the increase in NOx, the environmental benefits remain positive, making the dual essential oil blend a promising bio-additive for cleaner diesel operation.
Comparative Analysis of the Mechanical Strength of Bamboo Fiber-Reinforced Polyester Composites with Random and Unidirectional Fiber Orientations Hen lie Yu; Jiangfu Wu; Yantiex Gao; Zanfin Lu; Wenzhan Hu
International Journal of Energy Systems and Materials Innovation Vol. 1 No. 2 (2026): Edition January- April IJESMI
Publisher : Gio Vani Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17524/ijesmi.v1i2.22

Abstract

This study investigates the tensile properties of polyester-based composites reinforced with bamboo fibers, with particular emphasis on the effect of fiber orientation. Composite materials are formed by combining a matrix and a reinforcing phase to achieve improved mechanical performance. In this research, unsaturated polyester resin was used as the matrix, while bamboo fibers served as natural reinforcement due to their availability, low cost, and favorable mechanical characteristics. The specimens were fabricated using the hand lay-up method with two different fiber orientations: random and longitudinal (unidirectional). Tensile testing was conducted to evaluate the mechanical behavior of the composites, including ultimate tensile strength, yield strength, and strain. The results show that the addition of bamboo fibers enhances the tensile properties of the polyester resin compared to the neat resin, which exhibited brittle behavior and limited elongation. Composites with random fiber orientation demonstrated higher average tensile strength but also showed greater variability, indicating less uniform stress distribution. In contrast, composites with longitudinal fiber orientation exhibited more consistent mechanical properties due to better alignment of fibers with the direction of applied load, resulting in more efficient stress transfer. Overall, the findings highlight the importance of fiber orientation in determining the mechanical performance of natural fiber-reinforced composites. Longitudinal fiber alignment is recommended for applications requiring stable and reliable mechanical behavior, while random orientation may be considered where higher peak strength is desired under certain conditions.

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