0D/3D Simulations of Combustion in Gasoline Engines Operated with Multiple Spark Plug Technology

Pasternak, Michał; Mauß, Fabian; Xavier, Fabio; Rieß, Michael; Sens, Marc; Benz, Andreas

doi:10.4271/2015-01-1243

Cited by 28 publications

(28 citation statements)

References 7 publications

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“…Besides, Kartha et al [30] reported that multiple spark plug configuration yielded the least NOx emissions compared against single spark combustion with equivalent ignition energy, and specially, side spark ignition was ideal for low UHC and CO emissions. More important, Michal Pasternak et al [31] applied 0D/3D Simulations to estimate the spark plug number effects on knock occurrence, and the results indicated that the multiple spark ignition is more accessible to engine knock compared with single spark ignition, and ignition timing retardation was needed for multiple spark ignition to achieve the similar knock limit. Therefore, it is time and energy saving to implement knock study through multiple spark ignition, as it is more susceptible to knock events.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Knock Mechanism with Multiple Spark Plugs and Multiple Pressure Sensors

Shi¹,

Uddeen²,

An³

et al. 2020

SAE Technical Paper Series

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Engine knock is an abnormal phenomenon, which places barriers for modern Spark-Ignition (SI) engines to achieve higher thermal efficiency and better performance. In order to trigger more controllable knock events for study while keeping the knock intensity at restricted range, various spark strategies (e.g. spark timing, spark number, spark location) are applied to investigate on their influences on knock combustion characteristics and pressure oscillations. The experiment is implemented on a modified single cylinder Compression-Ignition (CI) engine operated at SI mode with port fuel injection (PFI). A specialized liner with 4 side spark plugs and 4 pressure sensors is used to generate various flame propagation processes, which leads to different auto-ignition onsets and knock development. Based on multiple channels of pressure signals, a bandpass filter is applied to obtain the pressure oscillations with respect to different spark strategies. Finally, the relationships among in-cylinder pressure, knock intensity, pressure fluctuation, heat release and measurement location, are analyzed to get better understanding on knock mechanism, influence factors and measurement methods. The main results show that: Igniting two spark plugs simultaneously brings higher knock amplitude than single spark ignition, however, adding more spark sites could effectively suppress the knock strength and rate of recurrence. A function (Y =-0.25X + 2.82) is fitted to illustrate the relations between the crank angle of 1st peak of knock oscillation and MAPO. Besides, the correlations among MAPO and other influential factors are evaluated. Moreover, the pressure sensors installed around the liner give different pressure fluctuations, which indicate the directionality of pressure wave transmission in cylinder during knock process.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Knock Mechanism with Multiple Spark Plugs and Multiple Pressure Sensors

Shi¹,

Uddeen²,

An³

et al. 2020

SAE Technical Paper Series

View full text Add to dashboard Cite

show abstract

“…This comparison further visualizes combustion progress. Qualitatively, the performance of the quasi-3D and spherical flame propagation model used by the 0D SI-SRM has been verified in our previous work 14,15 by comparison with the 3D CFD simulations carried out for the same engine and OP.…”

Section: Si-srm Parameterisation Using 3d Cfd Cold Flowmentioning

confidence: 55%

“…The 0D SI-SRM is a main numerical model of the presented simulation process and it has been presented in detail elsewhere. 12,[14][15][16] Here, we report the most important features, only.…”

Section: Modellingmentioning

confidence: 99%

“…The presented approach has been successfully used in simulating different engines and operating conditions such as EGR rates and boost pressure (see, e.g. Pasternak et al 14 ). This modelling combination is also used in many CFD applications, that is, for a combination of auto-ignition calculations and turbulent flame calculations based on flame area or level set approaches.…”

Section: Chemistrymentioning

confidence: 99%

“…12,13 It contains a sub-model for turbulent flame propagation and quasi-3D treatment of the combustion geometry with limitation to spherical flame growth. In Pasternak and colleagues, 14,15 the SI-SRM has been applied to evaluate the impact of multiple spark plug technology on the combustion processes. Thanks to the consideration of detailed chemistry, the SRM allows one to predict auto-ignition in the unburned gases and enables for the estimation of the risk of knock occurrence in SI engines.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Gasoline engine simulations using zero-dimensional spark ignition stochastic reactor model and three-dimensional computational fluid dynamics engine model

Pasternak¹,

Mauß

Sens

et al. 2015

International Journal of Engine Research

Self Cite

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A simulation process for spark ignition gasoline engines is proposed. The process is based on a zero-dimensional spark ignition stochastic reactor model and three-dimensional computational fluid dynamics of the cold in-cylinder flow. The cold flow simulations are carried out to analyse changes in the turbulent kinetic energy and its dissipation. From this analysis, the volume-averaged turbulent mixing time can be estimated that is a main input parameter for the spark ignition stochastic reactor model. The spark ignition stochastic reactor model is used to simulate combustion progress and to analyse auto-ignition tendency in the end-gas zone based on the detailed reaction kinetics. The presented engineering process bridges the gap between three-dimensional and zero-dimensional models and is applicable to various engine concepts, such as, port-injected and direct injection engines, with single and multiple spark plug technology. The modelling enables predicting combustion effects and estimating the risk of knock occurrence at different operating points or new engine concepts for which limited experimental data are available.

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Simulation of the Effects of Spark Timing and External EGR on Gasoline Combustion Under Knock-Limited Operation at High Speed and Load

Pasternak

Netzer

Mauß

et al. 2017

Knocking in Gasoline Engines

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0D/3D Simulations of Combustion in Gasoline Engines Operated with Multiple Spark Plug Technology

Cited by 28 publications

References 7 publications

Experimental Study on Knock Mechanism with Multiple Spark Plugs and Multiple Pressure Sensors

Experimental Study on Knock Mechanism with Multiple Spark Plugs and Multiple Pressure Sensors

Gasoline engine simulations using zero-dimensional spark ignition stochastic reactor model and three-dimensional computational fluid dynamics engine model

Simulation of the Effects of Spark Timing and External EGR on Gasoline Combustion Under Knock-Limited Operation at High Speed and Load

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