Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Diesel

Experimental Study on Performance and Emission Characteristic of Diesel Engine using Sunflower oil Biodiesel Blends

Ghassan S . Ali; Abed AL-Kadim Hassan

Engineering and Technology Journal, 2020, Volume 38, Issue 8, Pages 1169-1177
DOI: 10.30684/etj.v38i8A.385

Biodiesel fuel is a liquid biofuel produced by chemical process form new and used phytogenic oils, animal fats. Biodiesel fuels can be utilization alone or mixing with the pure diesel at different proportion. In the present work a diesel engine type (FIAT) , four cylinder, variable speed, direct injection was operated by sunflower oil methyl ester , biodiesel at different blend ratio . five different ratio of biodiesel blends 10%, 20%, 30%, 40%, and 50% by volume is used in this study and compared with using of pure diesel at variable loads and variable engine speed. The effect of biodiesel additive to pure diesel on the performance and emission characteristics. Adjust the engine speed at 1100 rpm by means of the engine tachometer and digital tachometer, and reduce the load gradually until the engine speed increased to 1900 rpm automatically by increments of 200 rpm. The BSFC for B20 It seems less than the other ratio of biodiesel blends, and the BTE of biodiesel blends is lower than the pure diesel but the B20 having high BTE in comparison with the other biodiesel- diesel mixtures. the UHC and CO emission for B20 is less than the biodiesel blends and pure diesel, but the NOX emission for B20 is lower than the other biodiesel blends and higher than pure diesel. The present work shows the B20 relatively is a better performance and combustion characteristic than that biodiesel blends ratio

Experimental Investigation of the Influence of Adding Alumina to Diesel Fuel on the Engine Performance and Emission Characteristics

Sadiq T. Bunyan; Abed AL-Khadim M. Hassan

Engineering and Technology Journal, 2020, Volume 38, Issue 4A, Pages 523-529
DOI: 10.30684/etj.v38i4A.498

The present experimental work is conducted to examine the influence of adding Alumina (Al2O3) nanoparticles to diesel fuel on the characteristic of the emissions and engine performance. The size of nanoparticles which have been added to diesel fuel to obtain nano-fuel is 20 nm. Three doses of Aluminum oxide were prepared (25, 50 and 100) ppm. The nanoparticles mixed with fuel by mechanical homogenous (manual electrical mixer) and ultrasonic processor. The study reveals that the adding of Aluminum oxide (Al2O3) to gas oil (Al2O3+DF) enhances the physical properties of fuel. Also, the adding of (Al2O3) reduce CO emissions by 20.5%, decrease NOx emission by 12.2%, increasing CO2 emissions by about 2.27% and decrease UHC emission about 13.5%. Furthermore, reduces the brake specific fuel consumption by 14.3%, decreasing the equivalence ratio by14.87% and improving the brake thermal efficiency by about 10.89%.

Air Pollutants and Performance Characteristics of Ethanol-Diesel Blends in CI Engines

Miqdam Tariq Chaichan

Engineering and Technology Journal, 2010, Volume 28, Issue 21, Pages 6365-6383

Owing to the energy crisis and pollution problems of today,
investigations have concentrated on decreasing fuel consumption and on
lowering the concentration of toxic components in combustion products by
using non-petroleum, renewable, sustainable and non-polluting fuels. While conventional energy sources such as natural gas, oil and coal are nonrenewable, alcohol can be coupled to renewable and sustainable energy
sources. In this study, the combustion characteristics and emissions of diesel fuel and ethanol blends were compared. The tests were performed at steady state conditions in a four-cylinder DI diesel engine at full load at 1500-rpm engine speed. The experimental results showed that diesel ethanol blends provided significant reductions in CO, unburned HC, and NOx. Ethanol blends had a 13.8% increase in brake-specific fuel consumption due to its lower heating value. The results indicated that ethanol may be blended with diesel fuel to be used without any modification on the engine