Pre- and post-injection flow characterization in a heavy-duty diesel engine using high-speed PIV

Zegers, Rpc Ron; Luijten, Ccm Carlo; Dam, NJ Nico; Goey, de Lph Philip

doi:10.1007/s00348-012-1323-3

Cited by 11 publications

(9 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…similar to that seen and discussed by Zegers et al [15]. The spray velocity is higher than the piston velocity and the mean velocity in the combustion chamber.…”

Section: Izadi Najafabadi Et Al / Sae Int J Engines / Volume 10 Issupporting

confidence: 90%

“…Laser Doppler Anemometry (LDA) uses the Doppler shift of scattered laser light to determine the velocity at a single point, and is implemented in optical engines to measure velocity vector at critical points, like the spark plug area in SI engines or the piston bowl area in Diesel engines [10,11,12]. Particle Image Velocimetry (PIV) can be applied in an optical engine as a non-intrusive laser diagnostic technique to measure flow fields in a two-dimensional plane [9,13,14,15]. In this technique, a pair of images is captured over a short time interval of Mie scattered light off seeding particles which should be chosen such that they faithfully follow the flow.…”

Section: Introductionmentioning

confidence: 99%

“…For PPC regimes, PIV has been used to measure the 2D in-cylinder flow structures [9,13,14,15,17]. One of the first studies was conducted by Miles et al [13], who measured vertical plane velocity fields inside the piston bowl and the squish region of a light duty (LD) optical engine (Volvo D5).…”

Section: Introductionmentioning

confidence: 99%

“…High-speed PIV gives the opportunity to measure cycle-resolved turbulence. One of the first high-speed PIV measurements (3 kHz) of the PPC mixing process was performed by Zegers et al [15], who studied flow structure in a horizontal plane close to the cylinder head of a heavy-duty (HD) optical engine. Their measurements concerned non-reactive conditions to see the effects of injection timings and strategies on the flow field.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effects of Injection Timing on Fluid Flow Characteristics of Partially Premixed Combustion Based on High-Speed Particle Image Velocimetry

Najafabadi

Tanov

Wang

et al. 2017

SAE Int. J. Engines

View full text Add to dashboard Cite

“…similar to that seen and discussed by Zegers et al [15]. The spray velocity is higher than the piston velocity and the mean velocity in the combustion chamber.…”

Section: Izadi Najafabadi Et Al / Sae Int J Engines / Volume 10 Issupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Injection Timing on Fluid Flow Characteristics of Partially Premixed Combustion Based on High-Speed Particle Image Velocimetry

Najafabadi

Tanov

Wang

et al. 2017

SAE Int. J. Engines

View full text Add to dashboard Cite

“…The diesel engine combustion measurement techniques include visualization, PIV (particle image velocimetry), LIF (laser induced fluorescence) and PDPA (phase Doppler particle anemometry). The PIV velocity measurement is a non-contact, transient and full-flow velocity measurement method, which has the advantages of not interfering with the quantitative information of the measured field and fast dynamic response [21,22]. LIF method produces relatively strong light signals with high spatial resolution and the fluorescence intensity is proportional to the incident light intensity so that it can be used to measure the concentration of substances [23].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation into Combustion Fitting in a Direct Injection Marine Diesel Engine

Ding

Sui

2018

Applied Sciences

View full text Add to dashboard Cite

The marine diesel engine combustion process is discontinuous and unsteady, resulting in complicated simulations and applications. When the diesel engine is used in the system integration simulation and investigation, a suitable combustion model has to be developed due to compatibility to the other components in the system. The Seiliger process model uses finite combustion stages to perform the main engine combustion characteristics and using the cycle time scale instead of the crank angle shortens the simulation time. Obtaining the defined Seiliger parameters used to calculate the engine performance such as peak pressure, temperature and work is significant and fitting process has to be carried out to get the parameters based on experimental investigation. During the combustion fitting, an appropriate mathematics approach is selected for root finding of non-linear multi-variable functions since there is a large amount of used experimental data. A direct injection marine engine test bed is applied for the experimental investigation based on the combustion fitting approach. The results of each cylinder and four-cylinder averaged pressure signals are fitted with the Seiliger process that is shown separately to obtain the Seiliger parameters, and are varied together with these parameters and with engine operating conditions to provide the basis for engine combustion modeling.

show abstract

Analysis of a tumbling motion using a clustering algorithm on dual-piv measurements: application to the in-cylinder flow of a miller cycle engine

2022

View full text Add to dashboard Cite

This paper aims to study the internal aerodynamics of a Miller cycle gasoline engine. This cycle uses an over-expanded stroke to recover more work, for the same amount of fuel, than the classical Otto cycle. To achieve this, the effective compression stroke is made smaller than the expansion one by closing the intake valves prematurely. The in-cylinder tumble flow then stops being driven by the valve jet before the piston reaches the bottom dead center, which disturbs the movement. The flow is observed here on a motored single-cylinder transparent engine coupled to a dual-PIV system. This system allows two velocity fields per engine cycle to be measured. The temporal evolution of the flow structures could thus be followed, while keeping the high number of instantaneous fields measured by the traditional PIV systems. The data are then well adapted to statistical analysis. A clustering analysis method, using the k-means algorithm and adapted to dual-PIV data, is described here. The first part presents a method defining a criterion on the instantaneous center of rotation of the tumble motion that can improve the rotation rates by 17%. A second analysis classifies the velocity fields into three groups of strong, medium and weak rotation intensity. The evolution of the characteristic quantities of each group shows that the movements with high rotation rates, created upstream of the compression phase, can give high turbulence rates close to the top dead center of the piston.

show abstract

Pre- and post-injection flow characterization in a heavy-duty diesel engine using high-speed PIV

Cited by 11 publications

References 27 publications

Effects of Injection Timing on Fluid Flow Characteristics of Partially Premixed Combustion Based on High-Speed Particle Image Velocimetry

Effects of Injection Timing on Fluid Flow Characteristics of Partially Premixed Combustion Based on High-Speed Particle Image Velocimetry

An Experimental Investigation into Combustion Fitting in a Direct Injection Marine Diesel Engine

Analysis of a tumbling motion using a clustering algorithm on dual-piv measurements: application to the in-cylinder flow of a miller cycle engine

Contact Info

Product

Resources

About