Definition of the optimal content of used cooking oil methyl ester in blends fuelling a turbocharged diesel engine

Zamboni, Giorgio; Capobianco, Massimo

doi:10.1016/j.biombioe.2021.106098

Cited by 2 publications

(1 citation statement)

References 25 publications

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“…In this scenario the performance of the internal combustion engine is still fundamental to reach the required target in terms of both emission and drivability [3]. In order to have more sustainable engines and reduce the dependence on fossil fuel, thus the CO2 production, an important solution can be provided by bio-fuels [4] and synthetic fuels [5]. To obtain high engine performance, turbocharging still play an important role: specific investigations on turbocharger are fundamental to improve engine-turbocharger 1D models correctly evaluating turbine and compressor behavior [6,7].…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of isentropic efficiency in turbocharger twin-entry turbines

Usai

Cordalonga

Marelli

2022

J. Phys.: Conf. Ser.

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Turbocharging plays a fundamental role not only in improving the performance of automotive engines, but also in reducing the fuel consumption and exhaust emissions of spark-ignited biofuel, diesel, liquid, and gaseous engines. Dedicated experimental investigations on turbochargers are therefore needed to evaluate a better understanding of its performance. The availability of experimental information on the steady flow performance of the turbocharger is an essential requirement to optimize the matching calculation. It is interesting to know the isentropic efficiency of the turbine in order to improve the coupling with the engine, in particular it is difficult to identify the definition of the turbine efficiency through a direct evaluation. In a radial turbine, the isentropic efficiency, evaluated directly starting from the measurement of the thermodynamic quantities at the inlet and outlet sections, can be affected by significant errors. This inaccuracy is mainly related to the incorrect evaluation of the turbine outlet temperature, due to the non-uniform distribution of the flow field in the measurement section. For this purpose, a flow conditioner was installed downstream the turbine. Tests were performed at different values of the rotational speed, and in quasi-adiabatic conditions. The flow field downstream the de-coupler was analysed through a hand-made three-hole probe with an exposed junction thermocouple inserted in the pipe with different protrusions. Thanks to this experimental campaign, it was possible to measure pressure, velocity, mass flow and temperature profiles necessary to examine the homogeneity of the flow field. As the turbocharger is fitted with a twin entry turbine, the thermodynamic quantities have been properly taken into account referring to each sector.

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Section: Introductionmentioning

confidence: 99%

Experimental evaluation of isentropic efficiency in turbocharger twin-entry turbines

Usai

Cordalonga

Marelli

2022

J. Phys.: Conf. Ser.

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B20 Fuel Compatibility with Steels in Case of Fuel Contamination

Sirviö,

Kaivosoja,

Nuortila

et al. 2023

Energies

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This study evaluated the compatibility with steels for three B20 fuel samples blended from fossil diesel and used cooking oil methyl ester. One sample was untreated and its concentration of copper was analyzed as <1 ppm. Another sample was doped by adding Cu at a concentration of ≤2 ppm and the third sample by adding Cu at a concentration of ≤4 ppm. Steel samples (carbon steel, stainless steel and a special alloy) were then put into the fuel blends and stored at 50 °C for 692 h. After storing, the metal concentrations of the fuel blends were again analyzed, and signs of corrosion were evaluated visually. The aim of this study was to find out if the fuel already contaminated by copper will affect the corrosion of the chosen steel qualities. Additionally, fuel properties were measured for all three blend samples before the immersion of steels. Visual evaluation of the steels indicated that signs of corrosion were seen in all studied samples, but Cu doping did not increase the signs of corrosion notably. The results also showed that the copper content from 1 to 2 and 4 ppm reduced the oxidation stability and increased the acid number of the fuel samples.

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Definition of the optimal content of used cooking oil methyl ester in blends fuelling a turbocharged diesel engine

Cited by 2 publications

References 25 publications

Experimental evaluation of isentropic efficiency in turbocharger twin-entry turbines

Experimental evaluation of isentropic efficiency in turbocharger twin-entry turbines

B20 Fuel Compatibility with Steels in Case of Fuel Contamination

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