Modelling of HCCI Engines: Comparison of Single-zone, Multi-zone and Test Data

Xu, Hongming; Liu, Mengmeng; Gharahbaghi, Shadi; Richardson, Steve; Wyszyński, Miroslaw L.; Megaritis, Thanos

doi:10.4271/2005-01-2123

Cited by 35 publications

(17 citation statements)

References 23 publications

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“…References [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] give a good overview of the modeling work in this field up to date. Recently, a consistent mixing model for the two-way-coupling of CFD codes and zero-dimensional multi-zone codes was developed by Barths et al [23].…”

Section: Introductionmentioning

confidence: 99%

An Interactively Coupled CFD-Multi-Zone Approach to Model HCCI Combustion

Felsch

Dahms

Glodde

et al. 2009

Flow Turbulence Combust

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The objective of this work is to present an innovative interactively coupled CFD-multi-zone approach. In a consistent manner, the approach combines detailed flow field information obtained from CFD with detailed chemical kinetics solved in a multi-zone model. Combustion and pollutant formation in an HCCI engine with recompressing VVA strategy are numerically investigated using the interactively coupled CFD-multi-zone approach. A surrogate fuel for gasoline is used in the simulation that consists of n-heptane (18% liquid volume fraction) and isooctane (82% liquid volume fraction). The underlying complete reaction mechanism comprises 482 elementary reactions and 115 chemical species. The interactively coupled CFD-multi-zone approach shows to be accurate enough to describe HCCI chemistry, and is at the same time economical enough to allow application in an industrial environment. For the test case investigated, the simulation results are compared to experimental data that has been obtained using real gasoline. The overall agreement between simulation and experiment is found to be very good.

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Section: Introductionmentioning

confidence: 99%

An Interactively Coupled CFD-Multi-Zone Approach to Model HCCI Combustion

Felsch

Dahms

Glodde

et al. 2009

Flow Turbulence Combust

View full text Add to dashboard Cite

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“…The main advantage of multi-zone models over computational fluid dynamics (CFD) tools is that more detailed chemical mechanisms can be applied directly. Therefore multi-zone modeling has been applied extensively in engine community [8][9][10][11][12][13][14][15][16]. In those studies, the complex flow phenomena are ignored.…”

Section: Introductionmentioning

confidence: 99%

Predicting auto-ignition characteristics of RCCI combustion using a multi-zone model

Egüz

Maes

Leermakers

et al. 2013

Int.J Automot. Technol.

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Premixed charge compression ignition (PCCI) is a clean and efficient alternative for classical diesel combustion. The concept of PCCI combustion is associated with early injection of the fuel whilst applying high exhaust gas recirculation (EGR) levels and operation with a highly lean mixture such that ignition takes place (well) after the injection event. Thus, it is possible to reduce soot and oxides of nitrogen (NO x ) emissions simultaneously. PCCI combustion is analyzed using a multi-zone model. In the multi-zone model, chemical mechanisms which are much more detailed compared to those used in computational fluid dynamics (CFD) approaches can be introduced directly. The CFD model is still used to predict the initial fuel stratification in the cylinder which is important to improve the quality of the model. For the analysis, dedicated experiments with n-heptane are used to evaluate the results of the model. In such a multi-zone model, 10 zones prove to be sufficient to describe the stratification with adequate resolution. It is observed that different fuel distributions have a large influence on the emissions when there is no mixing between the zones. To overcome this dependence, a basic inter-zonal diffusive 2 mixing is applied. The level of mixing is estimated with a sensitivity study. When the inter-zonal mixing is included, emission results become much less sensitive to the crank angle (CA) at which the charge stratification is sampled and the simulation is initialized.

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“…The variable valve timing system of the engine made it possible to change the valve timing for the inlet and exhaust valves within a 60 crank angle (CA) degree range. More details regarding the engine can be found elsewhere in [29] and [30]. In HCCI mode the engine was operated with a wide open throttle significantly reducing pumping losses.…”

Section: Methodsmentioning

confidence: 99%

Control of harmful hydrocarbon species in the exhaust of modern advanced GDI engines

Hasan

Abu-Jrai

Turner

et al. 2016

Atmospheric Environment

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Publisher: Elsevier NOTICE: this is the author's version of a work that was accepted for publication in Atmospheric Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Atmospheric Environment, [129, (2016)]

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Modelling of HCCI Engines: Comparison of Single-zone, Multi-zone and Test Data

Cited by 35 publications

References 23 publications

An Interactively Coupled CFD-Multi-Zone Approach to Model HCCI Combustion

An Interactively Coupled CFD-Multi-Zone Approach to Model HCCI Combustion

Predicting auto-ignition characteristics of RCCI combustion using a multi-zone model

Control of harmful hydrocarbon species in the exhaust of modern advanced GDI engines

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