Influence of Fuel Properties on the Diesel Injection Process in Nonvaporizing Conditions

Dernotte, Jérémie; Hespel, Camille; Houille, Sébastien; Foucher, Fabrice; Mounaïm‐Rousselle, Christine

doi:10.1615/atomizspr.2012004401

Cited by 51 publications

(37 citation statements)

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“…11 Table 5. On one hand, the results have been compared to the theoretical ones derived from the dimensional analysis and used by several authors such as Wakuri et al [28], Dent [29], Hiroyasu and Arai [30], Naber and Siebers [20], Payri et al [31] or Dernotte et al [32]: all these correlations keep the same exponents for the studied variables. The most significant difference is obtained in the dependence on the spreading angle where the value of the related exponent c varied from 0.09 (from experimental results) to 0.5 (from literature).…”

Section: Discussionmentioning

confidence: 99%

Engine combustion network: Influence of the gas properties on the spray penetration and spreading angle

Payri

Bardi

et al. 2014

Experimental Thermal and Fluid Science

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In this work, three Engine Combustion Network (ECN) single-hole nozzles with the same nominal characteristics have been tested under a wide range of conditions measuring spray penetration and spreading angle. n-dodecane has been injected in nonevaporative conditions at different injection pressures ranging from 50 to 150 MPa and several levels of ambient densities from 7.6 to 22.8 kg/m 3 . Nitrogen and Sulphur Hexafluoride (SF 6 ) atmospheres have been explored and,in the first case, a temperature sweep from 300 to 550 K at constant gas density has been executed. Mie scattering has been used as the optical technique by employing a fast camera, whereas image processing has been performed through a home-built Matlab code. Differences in spray penetration related to spray orifice diameter, spreading angle and start of injection transient have been found for the three injectors. Significant differenceshave been obtained when changing the ambient gas, whereas ambient temperature hardly affects the spray characteristics up to 400 K. However, a reduction in penetration has been observed beyond this point, mainly due to the sensitivity limitation of the technique as fuel evaporation becomes important. The different behavior observed when injecting in different gases could be explained due to the incomplete momentum transfer between spray droplets and entrained gas, together with the fact that there is an important change in speed of sound for the different gases, which affects the initial stage of the injection.

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Section: Discussionmentioning

confidence: 99%

Engine combustion network: Influence of the gas properties on the spray penetration and spreading angle

Payri

Bardi

et al. 2014

Experimental Thermal and Fluid Science

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“…Many researchers [2], [3], [4], [5] and [6] performed experimental studies to visualise and model the fuel jet behaviour in a confined steady state environment. The models include semi empirical equations for the fuel jet characteristics.…”

Section: Fuel Spray and Key Parameters Affecting Its Performancementioning

confidence: 99%

“…C d is the coefficient of discharge for the nozzle opening which can be found by the following equation proposed by Dernotte et al [2].…”

Section: Fuel Spray and Key Parameters Affecting Its Performancementioning

confidence: 99%

“…Sauter Mean Diameter (SMD) is defined as the mean diameter of the jet droplets that have the same surface area to volume ratio. Dernotte et al [2] proposed (eq.5) for SMD measurement at very high injection pressures:…”

Section: Fuel Spray and Key Parameters Affecting Its Performancementioning

confidence: 99%

“…Agarwal and Chaudhury [6] defined the spray cone angle as the largest angle formed by two straight lines from the nozzle hole to the spray boundary. Dernotte et al [2] proposed the following equation for the determination of fuel jet cone angle:…”

Section: Fuel Spray and Key Parameters Affecting Its Performancementioning

confidence: 99%

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Evaluation of the Effect of Fuel Properties on the Fuel Spray and Jet Characteristics in a HGV DI Diesel Engine Operated by Used Cooking Oils

Dizayi

Tomlin

et al. 2014

AMM

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Fuel injection systems in modern diesel engines are designed and built to comply with very stringent environmental standards. They should also meet the highest level of fuel economy. Drivability, rapid response and easy and accurate control are a common demand. Changing the fuel characteristics could affect the performance of the fuel injection system. This study focuses on the evaluation of fuel spray characteristics of straight used cooking oil (SUCO) and its blends with petroleum diesel (PD) as a surrogate for pure PD. Used cooking oil blends have quite different physical properties from those of pure PD. Data for the lower heating value (LHV), density and viscosity were obtained from laboratory analysis. These data were merged with the physical and thermodynamic conditions of the diesel engine of interest to evaluate the dynamic behaviour of the fuel jet in 360° of crank rotation namely, the compression stroke, and the power stroke including the injection process. Engine operational conditions were calculated using a diesel dual thermodynamic cycle taking into account fuel injection adjustment at three different speeds, namely, idle speed, maximum torque speed and rated power speed.The results showed that fuel jet characteristics vary with SUCO content in the fuel blend. Two ranges of SUCO content in the blends were distinguished, 0 -80% SUCO content and 80 -100% SUCO content. Both showed a constant rate of change of jet characters per 10% increase in SUCO content in the fuel blend. Lower rates of change of fuel characters were observed at 0-80% SUCO content. The higher the temperature, the lower the rate of change of fuel jet characteristics.

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Optical experimental study on cavitation development with different patterns in diesel injector nozzles at different fuel temperatures

Cao

et al. 2020

Exp Fluids

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Influence of Fuel Properties on the Diesel Injection Process in Nonvaporizing Conditions

Cited by 51 publications

References 0 publications

Engine combustion network: Influence of the gas properties on the spray penetration and spreading angle

Engine combustion network: Influence of the gas properties on the spray penetration and spreading angle

Evaluation of the Effect of Fuel Properties on the Fuel Spray and Jet Characteristics in a HGV DI Diesel Engine Operated by Used Cooking Oils

Optical experimental study on cavitation development with different patterns in diesel injector nozzles at different fuel temperatures

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