Innermotorische Ursachen für Partikelemissionen bei Ottomotoren mit Direkteinspritzung

Dageförde, Helge; Kubach, Heiko; Koch, Thomas; Spicher, Ulrich

doi:10.1007/978-3-658-05130-3_30

Cited by 5 publications

(4 citation statements)

References 1 publication

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“…Dageförde et al [69] show a summary about the influencing factors like fuel system, load change, injection strategy, operating temperature, wetting of components, entry of oil and sediments.…”

Section: Engine-specific Studiesmentioning

confidence: 99%

A literature research about particle emissions from engines with direct gasoline injection and the potential to reduce these emissions

Überall

Otte

Eilts

et al. 2015

Fuel

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Section: Engine-specific Studiesmentioning

confidence: 99%

A literature research about particle emissions from engines with direct gasoline injection and the potential to reduce these emissions

Überall

Otte

Eilts

et al. 2015

Fuel

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“…At the injector tip, a liquid film remains at the end of injection (EOI) and is not fully evaporated until the start of combustion (SOC), leading to deposits and the creation of soot particles due to the lack of oxygen in this region. 21,30 The tip deposits are influenced by engine operation (linked with evaporating conditions), fuel properties, injector geometry and its manufacturing process. 28,31,32 Miklautschitsch et al 21 investigated sources of particle emissions on an DISI engine with optical access and a high-speed camera.…”

Section: Numerical Modelmentioning

confidence: 99%

A phenomenological modelling framework for particle emission simulation in a direct-injection gasoline engine

Frommater

Neumann

Hasse

2020

International Journal of Engine Research

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A phenomenological modelling framework is presented that allows the simulation of the engine-out particle emissions of direct-injection gasoline engines based on physical principles. It is applicable both at steady-state operating conditions and in transient driving cycles. Within the modelling framework, a multi-zone model with gas-phase reaction kinetics is coupled with a stochastic reactor model considering the soot formation dynamics. Both model parts are fed with inputs from an accompanying engine process simulation. Particle emissions from injector deposits and inhomgeneous gaseous mixture preparation are taken into account. Pyrolysis reactions are considered in a zone with remaining fuel film at the injector, whereas in gas-phase zones that arise from inhomogeneous mixture preparation, the reaction of the air–fuel mixture is calculated under sub-stoichiometric conditions. The setup of those mixture-induced zones is generated by an existing homogenisation sub-model. The modelling framework is evaluated by test bench measurements of the engine operating map, a variation of engine actuator settings and transient driving profiles. Hereby, an accuracy of less than 20% deviation for particle number and mass is achieved.

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“…The cylinder wall temperature and the gas phase temperature further influence the formation of fuel films and soot. 11…”

Section: Introductionmentioning

confidence: 99%

“…The cylinder wall temperature and the gas phase temperature further influence the formation of fuel films and soot. 11 For investigating cause-and-effect chains, timeresolved optical measurement techniques have proven useful in providing the necessary information of the incylinder processes. These are often applied to optically accessible engines, which are used to investigate specific engine phenomena in detail [12][13][14] or to collect data for the validation of simulations.…”

Section: Introductionmentioning

confidence: 99%

Investigation of in-cylinder soot formation in a DISI engine during transient operation by simultaneous endoscopic PIV and flame imaging

Fach

Rödel

Schorr

et al. 2022

International Journal of Engine Research

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A single-cylinder full-metal engine with a real combustion chamber geometry was used to investigate particulate number emissions resulting from transient engine operation. The formation of particulate number emissions depends on mixture formation influenced by the in-cylinder flow and injection, and the formation of fuel films on the in-cylinder walls. For the investigation of this multi-parameter process, simultaneous endoscopic PIV and combustion visualization were applied. Hence, the measurement techniques allowed the investigation of in-cylinder flow, flame propagation, and soot formation. The test rig was modified to apply a generic load step and a realistic tip-in with Miller cycle. The reproducibility of the engine parameters during the transient allowed statistical analysis and the comparison between steady-state operating points. Cause-and-effect chains concerning the formation of soot are concluded by correlation analysis of parameters extracted from the flow field, the flame propagation and the soot luminosity.

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Innermotorische Ursachen für Partikelemissionen bei Ottomotoren mit Direkteinspritzung

Cited by 5 publications

References 1 publication

A literature research about particle emissions from engines with direct gasoline injection and the potential to reduce these emissions

A literature research about particle emissions from engines with direct gasoline injection and the potential to reduce these emissions

A phenomenological modelling framework for particle emission simulation in a direct-injection gasoline engine

Investigation of in-cylinder soot formation in a DISI engine during transient operation by simultaneous endoscopic PIV and flame imaging

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