“…Because of their calorific values of the blending, they produced lesser brake thermal efficiency when compared with diesel 21 . BDSS have more fatty acid 22 , Maximum participation of the biodiesel provide more reduction on the efficiency due to lesser viscosity, content of energy, density which lead to influence the evaporation of the fuel available in the cylinder during combustion 11 , 23 . Figure 5 Influence of biodiesel blends in BTE (Brake thermal efficiency).…”
Section: Resultsmentioning
confidence: 99%
“…This follows the common trends of the brake specific energy consumption such as load and brake specific energy consumption are inversely proportional 24 . These difference created by the lesser calorific values of the biodiesel of soapberry seed also higher amount of the fuel required to develop the similar amount of power 22 , 25 .…”
Section: Resultsmentioning
confidence: 99%
“…Especially 30BDSS have lowest CO emission than other fuels at highest load. These all are because of the temperature of the combustion, incomplete mass burnt rate in maximum load 22 , 29 . Figure 9 Influence of biodiesel blends in CO emissions.…”
Due to the ongoing demand for alternative fuels for CI engines, biodiesel-based research has received support globally. In this study, soapberry seed oil produced by transesterification process to creates biodiesel. It is referred to as BDSS (Biodiesel of Soapberry Seed). According to criteria, the oil qualities are recognized, hence, three different blends and pure diesel were tested in CRDI (Common Rail Direct Injection) engines. The blends descriptions are: 10BDSS (10% BDSS + 90% diesel), 20BDSS (20% BDSS + 80% diesel), and 30BDSS (30% BDSS + 70% diesel). The outcomes of the related tests for combustion, performance, and pollution were contrasted with those achieved using 100% diesel fuel. In this case, the mixing has resulted in worse braking thermal efficiency than diesel and lower residual emissions with greater NOx emissions. The superior results were obtained by 30BDSS, which had BTE of 27.82%, NOx emissions of 1348 ppm, peak pressure of 78.93 bar, heat release rate (HRR) of 61.15 J/deg, emissions of CO (0.81%), HC (11 ppm), and smoke opacity of 15.38%.
“…Because of their calorific values of the blending, they produced lesser brake thermal efficiency when compared with diesel 21 . BDSS have more fatty acid 22 , Maximum participation of the biodiesel provide more reduction on the efficiency due to lesser viscosity, content of energy, density which lead to influence the evaporation of the fuel available in the cylinder during combustion 11 , 23 . Figure 5 Influence of biodiesel blends in BTE (Brake thermal efficiency).…”
Section: Resultsmentioning
confidence: 99%
“…This follows the common trends of the brake specific energy consumption such as load and brake specific energy consumption are inversely proportional 24 . These difference created by the lesser calorific values of the biodiesel of soapberry seed also higher amount of the fuel required to develop the similar amount of power 22 , 25 .…”
Section: Resultsmentioning
confidence: 99%
“…Especially 30BDSS have lowest CO emission than other fuels at highest load. These all are because of the temperature of the combustion, incomplete mass burnt rate in maximum load 22 , 29 . Figure 9 Influence of biodiesel blends in CO emissions.…”
Due to the ongoing demand for alternative fuels for CI engines, biodiesel-based research has received support globally. In this study, soapberry seed oil produced by transesterification process to creates biodiesel. It is referred to as BDSS (Biodiesel of Soapberry Seed). According to criteria, the oil qualities are recognized, hence, three different blends and pure diesel were tested in CRDI (Common Rail Direct Injection) engines. The blends descriptions are: 10BDSS (10% BDSS + 90% diesel), 20BDSS (20% BDSS + 80% diesel), and 30BDSS (30% BDSS + 70% diesel). The outcomes of the related tests for combustion, performance, and pollution were contrasted with those achieved using 100% diesel fuel. In this case, the mixing has resulted in worse braking thermal efficiency than diesel and lower residual emissions with greater NOx emissions. The superior results were obtained by 30BDSS, which had BTE of 27.82%, NOx emissions of 1348 ppm, peak pressure of 78.93 bar, heat release rate (HRR) of 61.15 J/deg, emissions of CO (0.81%), HC (11 ppm), and smoke opacity of 15.38%.
“…The kinetics of the Zeldovich process makes the production of nitrogen oxides take the same amount of combustion time as a diesel engine [17]. As a result, any effect of biodiesel that extends the life of the mixture inside the cylinder or raises the temperature inside the cylinder can lead to NOx rise [18]. EGR is used to control NOx emissions in engines, and this technology has proven its effectiveness [19].…”
Most research studies have focused on reducing NOx emitted from diesel engines by adding oxygenated fuels (such as alcohol and biodiesel) to diesel to prepare a good alternative to conventional diesel fuels. Biofuels produced from vegetable oil and waste cooking oil while alcohol can be produced from sugarcane and corn. In the current study, the biodiesel used in the tests was derived from waste cooking oil. In this study, the influence of adding Exhaust Gas Recirculation (EGR) to diesel, biodiesel (D80B20), diesel-pentanol (D85PEN15), diesel octanol (D90OCT10), diesel-propanol (D95PRO5) and diesel-biodiesel-pentanol (D50B40PEN10) blends on performance and emitted pollutants of a diesel engine was investigated. The practical experiments were divided into two parts, the first section comparing the results of using diesel and other fuels at different speeds 2100, 2400, 2700 and 3000 rpm at constant loads without EGR. The second section studied the effect of adding EGR in variable proportions (5 %, 10 %, 15 % and 20 %) to the studied fuel mixtures at constant loads and speed. The results showed that adding biodiesel to diesel (without EGR) increases brake specific fuel consumption, NOx and CO2 emissions by 13.66 %, 41.35 % and 30.49 %, respectively, but, the thermal efficiency of the brakes, exhaust gas temperatures, UHC and CO decreases at rates of 12.58 %, 10.22 %, 18.9 % and 21.31 %, respectively, compared to diesel. When EGR was added at 20 %, the maximum increase for D80B20, D95PRO5, ED100, and D85PENT15 was: 18.38 %, 24.60 %, 45.84 %, and 20 %, respectively, compared to when no EGR was added. The thermal efficiency, exhaust gases temperature and NOx levels decreased when EGR rate was raised
“…Many researchers have looked into the engine performance of various biodiesels and their blends, revealing similar reductions in all pollutants except NOx [9,10]. When oxygenate chemicals are used, discovered that cleaner combustion of biodiesel and its blends is possible, resulting in fewer emissions [11][12][13].…”
Biodiesel fuel is a potential alternative energy source for diesel engines due to its physiochemical characteristics relatively similar to those of traditional diesel fuel. In this study, the performance, emission, and combustion features of a mono cylinder DI diesel engine are assessed using 20% Pumpkin seed methyl ester (PSOME20) and considering varying injection pressures (200, 220, 240, and 260 bar). The considered Pumpkin seed oil is converted into pumpkin biodiesel by transesterification and then used as fuel. The findings demonstrate that the Brake Thermal Efficiency (BTE) of PSOME20 can be raised by 1.68%, and the carbon monoxide (CO), hydrocarbon (HC), and smoke emanations can be lowered, while oxides of nitrogen (NOx) emissions are increased at an injection pressure (IP) of 240 bar compared to the standard IP of 200 bar. The cylinder pressure and the Heat Release Rate (HRR) become higher at 240 bar, whereas the ignition delay is shortened with respect to PSOME20 at a normal IP of 200 bar.
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