Optimization, characterization, and GC-MS analysis of recycled used engine oil by solvents and adsorbent extraction.

Recycled engine oil was produced from used engine oil (15W-40) using a combination of MEK and 1-butanol solvents with an activated carbon adsorbent through the adsorption process. The experimental design matrix was prepared using Box-Behnken design (BBD) package within RSM, and recycled engine oil is optimized by response surface methodology (RSM). By varying solvent-to-oil ratio, the temperature and contact duration optimal conditions were identified as a 5.

Assessment of solar energy potential for Bahir Dar city, Ethiopia.

The world's energy consumption is being replaced by renewable energies in large part because of the depletion of fossil fuels and the acceleration of environmental change. This study reports the amount of inward solar radiation in the date range from January 2018 to December 2022 in the Gregorian Calendar for certain areas in Bahir Dar, Ethiopia: 37°E and 11.6°N.

Experimental study on the parameters affecting the performance of spiral tube pump.

This experimental study delves into the critical parameters influencing the performance of spiral tube pumps-a centuries-old technology attributed to H.A. Wirtz in 1746.

Emission and performance analysis of diesel engine running with CeO nanoparticle additive blended into castor oil biodiesel as a substitute fuel.

The implications of adding cerium oxide (CeO) nanoparticles as a fuel additive to a castor oil biodiesel-diesel fuel blend on engine performance and emissions in a single-cylinder four-stroke diesel engine under various speed were examined in the current study. The test fuels used were fossil diesel fuels, B5 blend biodiesel (as 5% biodiesel and 95% diesel), B10 blend biodiesel (as 10% biodiesel and 90% diesel), B15 blend biodiesel (as 15% biodiesel and 85% diesel), B20 blend biodiesel (as 20% biodiesel and 80% diesel), and B25 blend biodiesel (as 25% biodiesel and 75% diesel), with cerium oxide (CeO) nanoparticle additive (75 ppm). The result of the physio-chemical properties of the oil samples was within the limit of the ASTM standard.

Modelling and simulation of fuel tank with increased capacity and improving its location for better stability of three wheeled vehicle.

In the automotive industry, the fuel tank is an essential component of the vehicle. It is; designed as an integral part of the fuel system to transport the fuel and deliver it to the engine via the fuel filter and fuel pump. In Ethiopia, it is observed that due to the smaller fuel tank of three-wheeled vehicles, more frequent visits to fuel stations result in a lot of time being wasted waiting in long queues at fuel stations.

Finite element analysis of bird impact with windshield of a vehicle.

The car's windscreen, which birds frequently come into contact when driving, determined to be one of the primary causes of severe bird as well as passengers, injuries. For the design and assessment of vehicle safety performance, finite element-based analysis of object strike to the windshield is commonly employed. The majority of the simpler windshield models utilized in simulations for various object strike research.

Performance and emission evaluation of CI engine fueled with ethanol diesel emulsion using NiZnFeO nanoparticle additive.

Diesel engines are widely used due to their higher thermal efficiency and lower Hydrocarbon (HC) emissions. The price fluctuation of petroleum fuel; the none-renewability and different hazardous emissions from petro-diesel, researchers are searching for a suitable renewable energy source for diesel engine. Ethanol is one of the promising alternative fuels that could be used to power diesel engine.

Operating parameters optimization for lower emissions in diesel engine with PCCI-DI mode using Taguchi and grey relational analysis.

Searching for ultra-low emission engines particularly for automotive applications is still ongoing. Even though LTC combustion mode results a prominent advantages in terms of reducing both NO and PM and also lowering the consumption of fuel, it mainly faces with the challenge of excess emissions of HC and CO. This study aimed to optimize the operating control factors for low emissions in PCCI-DI engine under LTC mode.

Numerical study of different shape design of piston bowl for diesel engine combustion in a light duty single-cylinder engine.

Diesel engine is the prime mover on land transportation industry and used in a variety of power generation applications due to their higher fuel efficiency. However, the engine research community faces a major hurdle rigorous restriction introduced in the Glob to reduce pollutant emissions from internal combustion engines. Different piston bowl shape designs allows more precise mixing before combustion to enhance in the optimization using computational calculations to reduce emissions.