Abstract
This paper reveals the results of metallic-based nanoparticle's effect on the performance, emission, and vibration of a diesel engine. Various metal-based nanoparticles such as Nickel (II) nitrate hexahydrate (Ni(NO3)2.6H2O), Silver nitrate (AgNO3), and Manganese (II) nitrate hydrate (Mn(NO3)2.xH2O) were chosen as fuel additives into diesel fuel and dosage with 25 and 50 ppm. In experimental tests, to identify the combined effect of silver nitrate on manganese and nickel, silver nitrate was chosen as a reference element in each mixture, thereby creating 4 different test samples. Engine tests were conducted in a single-cylinder diesel engine. The results revealed that values of specific fuel consumption, carbon monoxide, hydrocarbon, and oxides of nitrogen emissions with the increase in the dosage level of nanoparticles into diesel fuel were reduced considerably for all test fuels. Also, vibration and sound pressure level features of the diesel engine were reduced with the increasing dosage of nanoparticle additives.
Highlights
Internal combustion engines (ICEs) have the ability to convert chemical energy supplied by fuel with the presence of an oxidizer into useful mechanical energy
The fuel quality affects the CO emission, especially, higher cetane number of nanoparticle blended fuel which is responsible for better heat transfer rate and shorter ignition delay which leads to the reduction in CO emission [15,16]
When the oxygenated additive AgNO3 is added into test fuels, HC emission further decreased depending on the nanoparticle concentration
Summary
Internal combustion engines (ICEs) have the ability to convert chemical energy supplied by fuel with the presence of an oxidizer into useful mechanical energy. Fuel features enhancement of conventional fossil fuels to obtain better combustion by use of alternative renewable fuels and fuel additives such as biofuels and nanoparticles, respectively, can be suggested as an effective way to decrease exhaust emission levels of engines [4]. El-seesy et al [7] experimentally investigated the performance, emission, and combustion characteristics of a CI engine operated by jojoba biodiesel-diesel mixture with Al2O3 nanoparticle addition. 30 ppm dose of alumina (Al2O3) and cerium oxide (CeO2) were used as additives and improved performance, combustion, and emission behavior were obtained with the presence of nanoparticles due to having high surface area/volume and enhanced chemical reactivity during combustion. Agbulut et al [13] searched the performance, emission, noise, and vibration characteristics of a diesel engine fueled with different types of metal oxide nanoparticles and biodiesel. Dual effects of AgNO3-(Ni(NO3)2.6H2O) and AgNO3-(Mn(NO3)2.xH2O) dosed at 25 and 50 ppm on performance, emission, and vibration characteristics of a diesel engine were evaluated
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