Experimental investigation on the effects of using ethanol with biodiesel and diesel blends along with exhaust gas recirculation and magnetization of fuel in the diesel engine

Abstract

With the utilization of biodiesel as fuel in diesel engines, performance parameters reduce while certain emissions like NOx increases. This study presents the extensive investigation on utilizing biodiesel blends, ethanol, exhaust gas recirculation (EGR), and magnetization of fuel (MF, 3000 Gauss) in a four-stroke, single-cylinder vertical diesel engine to get an optimum level of performance and emission characteristics. In this investigation, biodiesel blends, ethanol, and diesel have been used as fuel. EGR has been used with the BD20E5 (Fuel blends containing 20% biodiesel, 75% diesel, and 5% ethanol) blend only. The results of this experimental investigation show that there are increases of 0.36% and 0.33% in brake power and decreases of 4% and 5.7% in brake specific fuel consumption with BD20E5 and BD20 + MF, respectively, as compared to BD20 only. With 30%EGR and BD20E5 there is a decrease of 36.36% in NOx emission as compared to BD20E5. It is found that the use of ethanol in lower quantity (E5) in fuel blends improves performance parameters and reduces emissions of CO, NOx, and smoke as compared to unadded biodiesel blends. EGR reduces NOx emission very effectively, but at higher EGR volume (30% EGR), performance parameters deteriorate and emissions of CO, HC are higher. To overcome these penalties with higher EGR, it can be used in lower volume (10% EGR) in combination with 5% ethanol and magnetized fuel, which has given optimum results for performance as well as emission parameters.

Emissions Characteristics and Engine Performance from the Interaction Effect of EGR and Diesel-Ethanol Blends in Diesel Engine

“…The temperatures inside cylinder changed with applied EGR (Figure 4), especially at high engine loads. These results were in agreement with the results of Yogesh and Chandramohan, 2022; Chaichan et al, 2022and Chandravanshi et al, 2022 and Zhang (2018) explained that adding ethanol to diesel causes a decrease in the cetane number (especially in the case of the current study, where the cetane number of Iraqi diesel is basically low), which increases the ignition delay period, so the amount of fuel injected into the combustion chamber is increased during this period. As a result of all that, NOx concentrations are increased.…”

A novel method for removing NOx from simulated marine exhaust gas in wet absorption system using Na2SO3/THS composite solution

“…During the past decades, a great deal of efforts has been devoted to develop feasible denitration method for marine application. At present, selective catalytic reduction (SCR), [10][11][12][13][14] exhaust gas recirculation (EGR), [15][16][17] and wet denitration [18][19][20][21] have been proven to be efficient NO x removal techniques. SCR system is difficult to integrate with EGCS to remove SO 2 and NO x simultaneously, and it has to replace the SCR catalysts regularly.…”