Modeling of gasoline fuel spray penetration in SIDI engines

Pielecha, Ireneusz

doi:10.1007/s12239-014-0005-y

Cited by 17 publications

(12 citation statements)

References 15 publications

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“…Simple global illumination (e.g. halogen lights) can be used for spray angle and spray tip penetration determination [3]. Its great advantage is that it can be used for determination of initial velocity of a liquid emerging the nozzle just after injector opening provided the frame rate is high.…”

Section: Introductionmentioning

confidence: 99%

Laser diagnostics for urea-water solution spray characterization

Kapusta

Teodorczyk

2017

MATEC Web Conf.

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Abstract. In this study, we summarize the laser techniques used for urea-water solution (UWS) spray characterization at the Institute of Heat Engineering (ITC), Faculty of Power and Aeronautical Engineering at Warsaw University of Technology. In presented studies several techniques for both, global and local spray characterization were used. Shadowgraphy-based long distance microscopy was used to visualize individual droplets and primary breakup. High speed imaging of Mie scattering (scattering on the gas-liquid interface) signal was used for global spray characterization. Combination of LIF (Laser Induced Fluorescence) and Mie scattering allowed to determine qualitative droplet size distribution across the whole spray cloud. The structured illumination technique used to modulate laser light sheet allowed to minimize the effects of multiple scattering in detection of Mie signal, what indicated huge potential of this technique in characterization of UWS sprays. The results presented here prove the importance of laser diagnostics in SCR systems development.

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Section: Introductionmentioning

confidence: 99%

Laser diagnostics for urea-water solution spray characterization

Kapusta

Teodorczyk

2017

MATEC Web Conf.

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“…High fuel pressure values result in high flow rates, which results in fewer data records being recorded in a given measurement range. The measurement range is due to the size of the video window of the fixed [13]. The size of the quartz window used was 90 mm - Fig.…”

Section: Research Apparatusmentioning

confidence: 99%

“…Many studies employ fixed volume chambers to study these quantities using halogen lamps [13], LED [7] or laser light [18].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the injectors operational wear process based on optical fuel spray analysis

Pielecha

Skowron

Mazanek

2018

Eksploatacja i Niezawodność – Maintenance and Reliability

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The diagnostics of combustion engine components currently requires the integration of many technical and scientific fields in order to quickly and accurately locate faults or pinpoint the causes of malfunction. This article analyzes the wear of injectors based on the geometric indicators of the fuel spray. Using a number of available parameter data, a selection has been made to best judge the wear of injectors in their operating conditions. Optical fuel spray tests were used to assess the injector wear. Various geometric indicators of the fuel stream have been presented, indicating their diagnostic utility and applicability. In conclusion, it was found that the current injection systems require the combination of mechanical injector diagnostics and advanced optical fuel spray diagnostics.

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“…The authors of this article, using the gasoline burning systems [27,28], diesel [29][30][31][32] and dual fuel systems [33], used a combustion system with a prechamber for the research and analysis of the gas supply system thermodynamic optimization of a CNG spark ignition engine.…”

Section: Motivationmentioning

confidence: 99%

Turbulent spark-jet ignition in SI gas fuelled engine

et al. 2017

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Abstract. The article contains a thermodynamic analysis of a new combustion system that allows the combustion of stratified gas mixtures with mean air excess coefficient in the range 1.4-1.8. Spark ignition was used in the pre-chamber that has been mounted in the engine cylinder head and contained a rich mixture out of which a turbulent flow of ignited mixture is ejected. It allows spark-jet ignition and the turbulent combustion of the lean mixture in the main combustion chamber. This resulted in a two-stage combustion system for lean mixtures. The experimental study has been conducted using a single-cylinder test engine with a geometric compression ratio  = 15.5 adapted for natural gas supply. The tests were performed at engine speed n = 2000 rpm under stationary engine load when the engine operating parameters and toxic compounds emissions have been recorded. Analysis of the results allowed to conclude that the evaluated combustion system offers large flexibility in the initiation of charge ignition through an appropriate control of the fuel quantities supplied into the pre-chamber and into the main combustion chamber. The research concluded with determining the charge ignition criterion for a suitably divided total fuel dose fed to the cylinder.

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Modeling of gasoline fuel spray penetration in SIDI engines

Cited by 17 publications

References 15 publications

Laser diagnostics for urea-water solution spray characterization

Laser diagnostics for urea-water solution spray characterization

Evaluation of the injectors operational wear process based on optical fuel spray analysis

Turbulent spark-jet ignition in SI gas fuelled engine

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