It is known that blending oxygenated fuels to gasoline can increase knock resistance of the fuel and reduce exhaust emissions. In this experimental research, ethyl acetate as a new renewable which produced through reaction ethanol with acetic acid was added base at 5% (E5) 10% (E10) volume ratios investigate its effect on engine performance For this, single-cylinder four-stroke SI utilized, experiments were carried out under low, medium, high full load constant speed 1500 rpm. The potential...

The usage of nanoparticles as a fuel additive to improve economy and reduce harmful exhaust emissions has been popular research topic in recent years. effects biodiesel (5% volume) aluminium oxide (Al2O3) (50 ppm 100 ppm) addition pure diesel on the energy exergy analysis engine were investigated this experimental study. experiments carried out at variable loads (25%, 50%, 75%, 100%) constant speed 1,500 rpm. results study showed that increased brake specific consumption (BSFC) while...

The effects of fuel additives have been investigated based on the second law (exergy analysis) thermodynamic in an SI engine. Exergy terms such as total cylinder exergy, exergy transfers via heat transfer and work, chemical irreversibility were computed for closed part engine cycle. Additionally, distributions, brake power, specific consumption (BSFC), first (energy) (exergy) efficiencies determined. experimental data, especially measured pressure used to calculate with a home-made code....

Abstract Developing nations have a critical need to increase electricity supply. Sudan has much unrealized potential for generating solar energy, particularly in the northern region. This research study focuses on designing 1-GW power station using PVsyst7.0 software program. To determine appropriate location solar-energy station, 14 criteria were evaluated. process is generic and suitable use any other country. The method conducting cash-flow estimates return investment illustrated economic...

Abstract - The objective of this paper is to investigate the use methyl acetate as oxygenated fuel blending for base gasoline in SI engine. effects on engine performance parameters (brake specific consumption, brake thermal efficiency and energy consumption rate) exhaust emissions (CO, HC, CO2 NOx) have been experimentally investigated. Engine experiments were conducted a single cylinder, water cooled, spark-ignition test at constant moderate speed; 1500 rpm different loads; 104, 207, 311...

The purpose of this study is to evaluate the effect water addition on combustion in a conventional SI engine. manifold induction method used for study. exhaust emissions, ignition timing, and temperature values were measured different equivalence ratio by using naturally aspirated liquefied-petroleum-gas-fueled spark ignition, four-cylinder accomplished over wide range fuel mass ratios 0.2−0.5. results showed that worked as cooling mechanism fuel−air charge slowing burning rates, yielding...

In this research, a numerical approach is created to assess the effective parameters of power transformer thermal management and, as result, improve their cooling systems. This study analyzes radiator’s performance across several arrangements and optimizes dimensions configurations for varied loads from techno-economic perspective. The optimization criteria were height (L), fin spacing (D), number fins (N). Due great complexity generated models, coupled thermo-hydraulic simulations carried...

In this experimental research, the effects of humidified air induction on emissions an SI engine have been investigated. Experiments performed four-stroke fuelled with unleaded gasoline at two loads (50 % and 100 %) four speeds (1200, 1400, 1600 1800 rpm) for 35 80 relative humidity. The experiments were first made humid air, then humidity intake was increased water injection same repeated. Exhaust such as NOx, CO, HC CO2 measured compared each test condition. results show that enhancement...

İçten yanmalı motorlardan salınan zararlı egzoz gazlarını azaltmak, yakıtın vuruntu direncini ve yenilenebilir yakıt kullanımını artırmak amacı ile benzine farklı oranlarda değişik oksijenli katkı maddeleri eklenmektedir. Sunulan bu çalışmada, geçmişte kullanılan katkıları günümüzde eklenen incelenmiştir. Ayrıca gelecek yıllarda kullanımı mümkün olan bazı katkılarının üretim yöntemleri önemli kimyasal-fiziksel özellikleri değerlendirilmiştir.

A second-law analysis of an LPG-powered, 4-stroke, single-cylinder, water-cooled, variable stroke length spark-ignition engine was carried out to assess the engine's energy efficiency. The simulated at each length/compression ratio combination. second law thermodynamics with aid first represents results entropy generation, reversible work output and exergy destruction combustion processes propane fuel. This shows that, from point view, lowering bore-to-stroke increases fuel availability...