Study on viscosity and surface tension properties of biodiesel-diesel blends and their effects on spray parameters for CI engines

Das, M. K.; Sarkar, Mouktik; Datta, Amitava; Santra, Apurba Kumar

doi:10.1016/j.fuel.2018.02.021

Cited by 77 publications

(22 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…is result is in accordance with findings in the previous literature [41] where it is found that the rheological properties of biodiesel generate more losses in the fuel lines that would lead to poor atomization and generate higher quantities of unburned liquid fuel.…”

Section: Experimental and Simulationsupporting

confidence: 93%

Experimental and Numerical Investigation on the Influence of the Rate of Injection (Roi) on Engine Performance for B100 Fuel Control Strategy in Diesel Engines

Noukpo

Abbe

Joseph

et al. 2020

Journal of Engineering

View full text Add to dashboard Cite

Maintaining the quality of breathing air in urban and industrial areas is one of the biggest challenges faced by humanity in the modern era. Diesel engines, as one of the main providers of energy supply for modern equipment and transport, are also unfortunately contributing highly to the deterioration of air quality. A recent research path on the limitation of diesel engine emissions is the use of alternative fuel from vegetable or animal fats or oil called biodiesel. Although the use of biodiesel has proven its efficiency in reducing emissions, it remains a problem to maintain the engine’s efficiency when shifting to biodiesel, especially due to its injection and atomization properties; most of the recent research focused on improving biodiesel fuel quality by blending it with traditional diesel fuel, but few works can be found on the regulation or control of diesel engine process when shifting to 100% biodiesel fuel (B100). This work proposes a fuel control strategy and methodology based on diesel engine operating data obtained from an experimentally designed rate of injection model (ROI) at different injection pressures and a jet and spray droplet distribution validated a two-zone model. Results show that B100 gives a higher amount of about 8% of injected fuel, a longer jet penetration of about 20 mm higher at 100 MPa injection pressure, a wider cone angle, and about a 40% increase of coarseness of the jet distribution. The experimental and numerical-based control strategy provides interacting relationships between B100 properties and specific engine features where actions shall be made to keep the engine’s efficiency when the shift is made; meanwhile, the algorithm provides a hierarchical step-by-step correcting procedure taking into account the possible degradation that could occur from the use of B100 in diesel engines.

show abstract

Section: Experimental and Simulationsupporting

confidence: 93%

Experimental and Numerical Investigation on the Influence of the Rate of Injection (Roi) on Engine Performance for B100 Fuel Control Strategy in Diesel Engines

Noukpo

Abbe

Joseph

et al. 2020

Journal of Engineering

View full text Add to dashboard Cite

show abstract

“…Previous research has revealed that the spray quality of biodiesel is inferior to diesel owing to its higher density, kinematic viscosity, and surface tension. [8][9][10][11][12] Furthermore, quality of fuel atomization greatly influences the combustion characteristics and pollutant emissions of a diesel engine. Homogeneous air-fuel mixture can decrease the particulate matter (PM) emissions and increase the combustion efficiency of a diesel engine.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the influence of fuel temperature and injection parameters on biodiesel spray characteristics

Geng

Wang

et al. 2019

Energy Science & Engineering

View full text Add to dashboard Cite

The purpose of this study is to investigate the effects of fuel temperature and nozzle length‐diameter ratio (L/D) on biodiesel spray characteristics, under high injection pressure and high ambient pressure, by numerical method. The analysis of spray characteristics is carried out in conjunction with the transient flow inside nozzle. To achieve this, three‐dimensional calculation grids of spray nozzle and spray domain were setup, and the needle movement was achieved by dynamic mesh technique. The reliability of spray models was validated by experimental results. It was established that the variation in spray tip penetration (STP) and Sauter mean diameter (SMD) is similar at different initial conditions. The STP increases at a faster rate initially and then slows down, whereas the SMD gradually decreases with time after the injection. In addition, a sensitivity analysis of the effects of injection parameters on biodiesel spray characteristics was conducted. Compared to the nozzle L/D, injection pressure and fuel temperature have a greater impact on biodiesel spray characteristics. The increase in injection pressure has a significant effect on the velocity distribution, STP and SMD. When the injection pressure is increased from 100 to 200 MPa, the maximum velocity of the spray core zone increases by 33.96%, the STP increases by 27.17%, and the SMD reduces by 14.81%. Furthermore, an increase in fuel temperature mainly affects the concentration distribution and the SMD of atomized droplets. When the fuel temperature is increased from 300 to 350 K, the maximum concentration of axial spray center lowers by 25.41%, and the SMD decreases by 17.19%. However, the increase of L/D chiefly impacts the concentration of axial spray center, but has little effect on other spray parameters. When the nozzle L/D is increased from 4 to 8, the maximum concentration of axial spray center increases by 20.29%.

show abstract

“…(11) has a large positive error of 27 %. Das et al [27] proposed an improved model for the viscosity of a ternary blend by adding a fractional term to Eq. (11):…”

Section: Models For Predicting the Viscosities Of The Blendsmentioning

confidence: 99%

Predicting the Temperature and Composition – Dependent Density and Viscosity of Diesel Fuel – Ethanol Blends

Todoruț¹,

Molea²,

Barabás³

2019

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

Density and viscosity are very important fuel properties which have a major influence not only on the fuel production, transportation and distribution processes but also on the processes that take place in an internal combustion engine. Developing robust and high precision density and viscosity models for stabilized diesel fuel -ethanol blends helps the production of fuel to adhere to the quality requirements regarding density and viscosity and the modeling and simulation of injection and combustion processes. For modeling the density and the viscosity of diesel fuel -ethanol blends, five mixtures were prepared with ethanol content up to 15 % (v/v) andwere stabilized by adding tetrahydrofuran as a surfactant at room temperature. The temperature-dependent density and viscosity of the blends were measured at four different temperatures (0, 15, 40 and 50 °C) using an SVM 3000 type apparatus. Based on experimental data, several mixing rules were fitted to them and three new models were developed, of which two need only one experimental value. These models yield very good accuracies, presenting average relative deviations of 0.0604 % in the case of density and 3.8931 % in the case of viscosity.

show abstract

Study on viscosity and surface tension properties of biodiesel-diesel blends and their effects on spray parameters for CI engines

Cited by 77 publications

References 38 publications

Experimental and Numerical Investigation on the Influence of the Rate of Injection (Roi) on Engine Performance for B100 Fuel Control Strategy in Diesel Engines

Experimental and Numerical Investigation on the Influence of the Rate of Injection (Roi) on Engine Performance for B100 Fuel Control Strategy in Diesel Engines

Numerical simulation of the influence of fuel temperature and injection parameters on biodiesel spray characteristics

Predicting the Temperature and Composition – Dependent Density and Viscosity of Diesel Fuel – Ethanol Blends

Contact Info

Product

Resources

About