Six-Mode Cycle Evaluation of the Effect of EGR and Multiple Injections on Particulate and NOx Emissions from a D.I. Diesel Engine

Montgomery, David T.; Reitz, Rolf D.

doi:10.4271/960316

Cited by 108 publications

(32 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Um die immer strengeren Abgasnormen [31] [17], [48], [91], [96], [104], [114], [117] [10], [42], [43], [57], [102] [114] und [147]. Zukünftig stellt die Optimierung der Einspritzsysteme und -strategie ein großes Potential zur Absenkung der limitierten Abgaskomponenten und des Kraftstoffmehrverbrauches dar [18], [47], [55], [73], [101], [130], [131] und [150].…”

Section: Partikelminderungunclassified

“…Wie in Abschnitt 3 dargelegt, führt eine früh an die Haupteinspritzung angelagerte Nacheinspritzung im Allgemeinen zu einer Reduktion der Rußemission [17], [48], [91], [96], [104]. Hierbei wird durch einen zusätzlichen Impulseintrag und eine Erhöhung der Temperatur in der späten Verbrennungsphase die Oxidation der gebildeten Ruß-partikel erhöht.…”

Section: Einfluss Der Nacheinspritzungunclassified

See 1 more Smart Citation

Rußreaktivität bei Nutzfahrzeug-Dieselmotoren

et al. 2014

View full text Add to dashboard Cite

Section: Partikelminderungunclassified

Section: Einfluss Der Nacheinspritzungunclassified

Rußreaktivität bei Nutzfahrzeug-Dieselmotoren

et al. 2014

View full text Add to dashboard Cite

“…In this section, a single-cylinder version of the Caterpillar 3400 series engine [29] is used for LES simulation. Some relevant details of the engine are listed in Table 2.…”

Section: Diesel Engine Simulationmentioning

confidence: 99%

Large eddy simulation of fuel injection and mixing process in a diesel engine

et al. 2011

View full text Add to dashboard Cite

The large eddy simulation (LES) approach implemented in the KIVA-3V code and based on one-equation sub-grid turbulent kinetic energy model are employed for numerical computation of diesel sprays in a constant volume vessel and in a Caterpillar 3400 series diesel engine. Computational results are compared with those obtained by an RANS (RNG k-ε) model as well as with experimental data. The sensitivity of the LES results to mesh resolution is also discussed. The results show that LES generally provides flow and spray characteristics in better agreement with experimental data than RANS; and that small-scale random vortical structures of the in-cylinder turbulent spray field can be captured by LES. Furthermore, the penetrations of fuel droplets and vapors calculated by LES are larger than the RANS result, and the sub-grid turbulent kinetic energy and sub-grid turbulent viscosity provided by the LES model are evidently less than those calculated by the RANS model. Finally, it is found that the initial swirl significantly affects the spray penetration and the distribution of fuel vapor within the combustion chamber.

show abstract

“…Although each paper has approached the problem from a different point of view, all the authors have reached the conclusion that multiple injections indeed lead to a reduced quantity of emissions [4]- [7].…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the injection law influence on NOx emissions for a compression ignited engine

Moldovanu

Mariașiu

2018

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract.Under the present conditions, where sustained efforts are being made by researchers and automotive industry developers to reduce toxic gases (and fitting them into existing pollution standards), research is required to define the possible directions to be followed for this purpose. One of these directions is also presented in this paper.The paper presents research done by using numerical analysis of the influence of the injection law on NOx emission on compression ignited engines. Instead of a normal injection law, a particular injection law was considered to reduce the effect of the cavity on the fuel flow inside the injector in order to achieve a more homogeneous fuel jet exit at the injector.It is noted that there are NOx emission reductions of up to 20% (obtained at 760 degrees CA) compared to the initial injection law, which confirms the need to continue studying the presented research topic. There are also differences in the formation and development of NOx emission zones within the combustion chamber (the volume and positioning of the contact surface towards the walls of the combustion chamber)..

show abstract

Six-Mode Cycle Evaluation of the Effect of EGR and Multiple Injections on Particulate and NOx Emissions from a D.I. Diesel Engine

Cited by 108 publications

References 9 publications

Rußreaktivität bei Nutzfahrzeug-Dieselmotoren

Rußreaktivität bei Nutzfahrzeug-Dieselmotoren

Large eddy simulation of fuel injection and mixing process in a diesel engine

Numerical analysis of the injection law influence on NOx emissions for a compression ignited engine

Contact Info

Product

Resources

About