Performance of an agricultural engine using mineral diesel and ethanol fuels

Farias, Marcelo Silveira de; Schlosser, José Fernando; Russini, Alexandre; Frantz, Ulisses Giacomini; Estrada, Javier

doi:10.1590/0103-8478cr20151387

Cited by 12 publications

(13 citation statements)

References 9 publications

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“…TBP had the highest variability between treatments and was 74 kPa with a small tread width in flat terrain. TBP increases the torque and power of agricultural engines by enriching the fuel-air mixture with more oxygen, improving engine performance (Farias, et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

Energy Performance in Disc Harrowing Operation in Different Gradients and Gauges

et al. 2019

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The operational performance of the agricultural tractor can be increased by adjusting parameters such as tire inflation pressure, axle mass distribution and gauge opening, which is a very divergent factor in controlled-traffic production. The objective of the experiment was to measure the energy performance of a 93 kW agricultural tractor in intermediate grading operation in two slopes (flat and sloping) and three gauge configurations (closed, intermediate and open) in mobilized soil. Energy performance was determined from the following parameters: slip, engine speed, actual effective speed, hourly and specific fuel consumption; strength, power and performance on the drawbar. Turbo pressure and temperature monitoring was also performed at six different engine points. The experiment was conducted in double factorial arrangement (2 slopes and 3 gauges), with four replications, totaling 24 plots. Data were analyzed for normality and homoscedasticity of the residues, after ANOVA and when significant, the means test. Tilts and tire gauges did not differ statistically, so it can be concluded that depending on the operation do not interfere with operating performance.

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Section: Resultsmentioning

confidence: 99%

Energy Performance in Disc Harrowing Operation in Different Gradients and Gauges

et al. 2019

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“…Because of the limitation of the injection angle of all nozzles, the ethanol spray is mainly injected at the cylinder wall and top ring surface of the piston. With the upward movement of the piston and air movement in the cylinder, ethanol spray is gradually diffused and mixed in the cylinder [12]. Figure 8 Ethanol Mass Fraction in the Cylinder at 260°CA Figure 9 shows ethanol mass fraction in the cylinder at 344°CA and 360°CA and diesel mass fraction in the cylinder at 380°CA.…”

Section: Discussion and Analysismentioning

confidence: 99%

Analysis on Combustion Process of Ethanol - Diesel Direct Injection Engine with Two-stage Ethanol Injection Ignited by Diesel

Yu¹,

Zhou²,

Zhang³

et al. 2018

Proceedings of the 2017 4th International Conference on Machinery, Materials and Computer (MACMC 2017)

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Abstract. A set of GDI system was installed on a F188 single-cylinder, air-cooled and vertical direct injection diesel engine, which was used for ethanol injection, and the mechanical pump injection system of the original diesel engine was used for diesel injection. Ethanol and diesel account for half of the total size respectively, and the total heat energy of the fuel is equivalent to that of the original diesel engine under the same condition. A 3D combustion model is established for the ethanol -diesel direct injection engine. The ethanol injection is adopted with two-stage injection mode, with the first stage injection starting point at 240°CA and the second stage injection starting point the same as the diesel injection starting point, 344°CA. Four conditions featured by the same total two-stage ethanol injection and the first stage injection and second stage injection respectively accounting for 20% and 80% (B20L80), 40% and 60% (B40L60), 60% and 40% (B60L40) and 80% and 20% (B80L20) of the total injection are calculated and analyzed. After diesel burning, the mixed ethanol is ignited. The two-stage ethanol injection proportion is different, and ethanol premixing and diffusion combustion proportion in the cylinder is also different, thus affecting the combustion process. The result shows that, with regard to B60L40 and B40L60, cylinder combustion pressure and average temperature are higher, combustion speed is faster, combustion is more sufficient, and combustion process is better. B60L40 has the highest NO generation but the lowest soot generation, and B20L80 has the lowest NO generation but the highest soot generation.

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“…The difference of the heat release rate of E0, E6 and E12 is relatively small, because the heat release period of E12 is earlier, the cylinder pressure is higher. Combustion heat release rules of E0 and E6 have obviously shown the double-peak characteristics, with the increased fuel diffusion combustion proportion [12]. The later the ethanol injection starting point is, the more serious the post-combustion phenomenon will be.…”

Section: Cylinder Pressure and Combustion Heat Release Ratementioning

confidence: 99%

Analysis on the Combustion Process of the Ethanol - Diesel Direct Injection Engine with Simultaneous Diesel and Ethanol Injection (with Ethanol Injection Starting Point Earlier than the Diesel Injection Starting Point)

Yu¹,

Zhou²,

Yao³

et al. 2018

Proceedings of the 2017 4th International Conference on Machinery, Materials and Computer (MACMC 2017)

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A set of GDI system for ethanol injection is installed on a F188 diesel engine, and the diesel supply system of the original diesel engine is used for diesel injection. The computational fluid dynamics software FIRE is adopted to establish a 3D combustion model of the ethanol -diesel direct injection engine. The total heat energy of the fuel is equivalent to that of the original diesel engine under the same condition. As the diesel injection starting point is 344°CA and there is simultaneous diesel and ethanol injection, the ethanol injection starting points at 344°CA, 338°CA, 332°CA, 326°CA and 320°CA are subject to 3D simulation for fuel injection, mixed gas formation and combustion and pollutant formation process. The results show that, the earlier the ethanol injection is, the steeper the heat release rate curve during the initial combustion period, the higher the peak value, and the shorter the heat release duration are, and the higher the maximum combustion pressure, the headmost phase of the maximum combustion pressure and the more obvious the premixed combustion are. Earlier ethanol injection starting point and quicker rise of the temperature curve of the cylinder bring the headmost phase of the highest average temperature in the cylinder, and higher average temperature in the cylinder brings higher NO concentration. The ethanol injection starting point shall be earlier than the diesel injection starting point injection, for it is the most favorable for reducing soot generation.

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Performance of an agricultural engine using mineral diesel and ethanol fuels

Abstract: The global demand for alternatives for mineral diesel oil is growing due to the need for satisfying sustainability and environmental requirements, forcing industries and research institutions to

Cited by 12 publications

References 9 publications

Energy Performance in Disc Harrowing Operation in Different Gradients and Gauges

Energy Performance in Disc Harrowing Operation in Different Gradients and Gauges

Analysis on Combustion Process of Ethanol - Diesel Direct Injection Engine with Two-stage Ethanol Injection Ignited by Diesel

Analysis on the Combustion Process of the Ethanol - Diesel Direct Injection Engine with Simultaneous Diesel and Ethanol Injection (with Ethanol Injection Starting Point Earlier than the Diesel Injection Starting Point)

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