Influence of fuel temperature on atomization parameters in a pressure-swirl atomizer from a port fuel injector by Shadowgraphy technique

Fajgenbaum, Renata; Santos, Rogério Gonçalves dos

doi:10.1007/s40430-015-0443-0

Cited by 15 publications

(14 citation statements)

References 22 publications

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“…The difference between these systems is that the PFI system working with injection pressures in the range of 300 to 600 kPa and the air-fuel mixture occurs outside of engine combustion chamber while the injection pressures in the GDI system are on the order of 20 MPa and the air-fuel mixture occurs within the engine combustion chamber. As a result of this, the spray structure of PFI system is completely different of that GDI system [1].…”

Section: Introductionmentioning

confidence: 94%

“…The explanation for such event is that increasing the n-heptane temperature occurs a decrease in the values of n-heptane physicochemical properties, as exhibited in Figure 2. The decrease in the value of both viscosity and surface tension, liquid properties oppose to the disintegration of liquid jets/sheets into drop and droplets, can provide smaller droplet and thus a better atomization [3,7]. …”

Section: Droplet Sizesmentioning

confidence: 99%

“…The GDI system is the injection system most studied in the world in order to predict and improve the spray characteristics [2,3]. For instance, Aleiferis et al [4], used a multi-hole GDI injector operating at 15 MPa fuel pressure and varied the injection temperature (20 -120…”

Section: Introductionmentioning

confidence: 99%

“…However, the PFI technology is still the vast majority injection system employed in the emerging country and has the tendency of continuing for many years due to its economical benefit [3,5].…”

Section: Introductionmentioning

confidence: 99%

“…Researches conducted to investigate the spray characteristics of PFI injectors include Fajgenbaum and Santos [3], that studied the microscopic spray characteristics through Shadowgraph technique of a four-hole port fuel injector for two different injection temperatures (16 -55…”

Section: Introductionmentioning

confidence: 99%

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Effect of n-heptane temperature on atomization parameters from a single-hole port fuel injector

Júnior¹,

Fukumasu²,

Berti³

et al. 2016

Anais Do XXIV Simpósio Internacional De Engenharia Automotiva

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Currently, there are stringent emission norms that regulate the level of pollutant emissions which all automotive engines must satisfy. In order to ensure that new internal combustion engines reach the level of emission established in these norms, researchers have studied the physical phenomena that happen in each part of the engine. One important phenomenon that has a great influence in both fuel consumption and pollutant emissions is the spray formed by the fuel injector. In this work, experiments were conducted in order to analyze the influence of test fluid temperature on atomization parameters of the spray formed by a single-hole port fuel injector (PFI). The n-heptane was used as test fluid at three temperatures (0, 30 and 60• C). The evaluations of droplet sizes, drop size distributions and drop velocities were performed by Phase Doppler Particle Analyzer (PDPA) technique. The measurements were taken 125 mm downstream from the injector tip along its axis with 300 kPa injection pressure. Results indicated that increasing the test fluid temperature induces a reduction in mean droplet diameters. This result was also observed in drop size distributions. Moreover, the increase in fuel temperature led to droplets with higher velocities.

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Section: Introductionmentioning

confidence: 94%

Section: Droplet Sizesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of n-heptane temperature on atomization parameters from a single-hole port fuel injector

Júnior¹,

Fukumasu²,

Berti³

et al. 2016

Anais Do XXIV Simpósio Internacional De Engenharia Automotiva

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Study of spiral path angle in pressure-swirl atomizer with spiral path

2020

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Numerical simulation of needle movement nozzle flow coupled with spray for a diesel injector using an Eulerian spray atomization model

Payri

Martí-Aldaraví

Alarcón

2017

J Braz. Soc. Mech. Sci. Eng.

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Gimeno, J.; Marti-Aldaravi, P.; Alarcón-Herrera, MY. (2017). Numerical simulation of needle movement nozzle flow coupled with spray for a diesel injector using an Eulerian spray atomization model. Abstract The injector dynamics have a strong impact on spray behavior, therefore on combustion efficiency and pollutant emissions. Nozzle flow and spray coupled simulations are useful tools to analyze the effect of nozzle geometry, and they could be used also to study the effect of needle movement. In this work, three different approximations to the same needle lift law are employed in an Eulerian Spray Atomization (ESA) model. The main advantage of this model is that is able to simulate nozzle flow and spray seamlessly. Engine Combustion Network (ECN) Spray A conditions are simulated. Results show that the experimental needle lift law can be used without any fitting to a smoothed expression, but all details of the needle dynamics must be considered in order to properly predict mass flow rate and spray penetration. Additionally, it has been shown that needle dynamics has a strong impact on heating effects inside the nozzle.Keywords Multi-phase · CFD · needle dynamics · atomization · fuel injection · moving mesh Final author version, cite as: Payri, R., Gimeno, J., Mart-Aldarav, P. et al. "Numerical simulation of needle movement nozzle flow coupled with spray for a diesel injector using an Eulerian spray atomization model", J Braz.

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Influence of fuel temperature on atomization parameters in a pressure-swirl atomizer from a port fuel injector by Shadowgraphy technique

Cited by 15 publications

References 22 publications

Effect of n-heptane temperature on atomization parameters from a single-hole port fuel injector

Effect of n-heptane temperature on atomization parameters from a single-hole port fuel injector

Study of spiral path angle in pressure-swirl atomizer with spiral path

Numerical simulation of needle movement nozzle flow coupled with spray for a diesel injector using an Eulerian spray atomization model

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