Simulation of temporal and spatial soot evolution in an automotive diesel engine using the Moss–Brookes soot model

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Simulation of temporal and spatial soot evolution in an automotive diesel engine using the Moss–Brookes soot model. / Pang, Kar Mun; Ng, Hoon Kiat; Gan, Suyin.

In: Energy Conversion and Management, Vol. 58, 2012, p. 171-184.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Pang, Kar Mun; Ng, Hoon Kiat; Gan, Suyin / Simulation of temporal and spatial soot evolution in an automotive diesel engine using the Moss–Brookes soot model.

In: Energy Conversion and Management, Vol. 58, 2012, p. 171-184.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{fa8783104e444922bec2a357d4ba6750,
title = "Simulation of temporal and spatial soot evolution in an automotive diesel engine using the Moss–Brookes soot model",
publisher = "Pergamon",
author = "Pang, {Kar Mun} and Ng, {Hoon Kiat} and Suyin Gan",
year = "2012",
doi = "10.1016/j.enconman.2012.01.015",
volume = "58",
pages = "171--184",
journal = "Energy Conversion and Management",
issn = "0196-8904",

}

RIS

TY - JOUR

T1 - Simulation of temporal and spatial soot evolution in an automotive diesel engine using the Moss–Brookes soot model

A1 - Pang,Kar Mun

A1 - Ng,Hoon Kiat

A1 - Gan,Suyin

AU - Pang,Kar Mun

AU - Ng,Hoon Kiat

AU - Gan,Suyin

PB - Pergamon

PY - 2012

Y1 - 2012

N2 - In this reported work, computational study on the formation processes of soot particles from diesel combustion is conducted using an approach where Computational Fluid Dynamics (CFD) is coupled with a chemical kinetic model. A multi-step soot model which accounts for inception, surface growth, coagulation and oxidation was applied. Model constant values in the Moss–Brookes soot formation and Fenimore–Jones soot oxidation models were calibrated, and were validated against in-cylinder soot evolution and exhaust soot density of both heavy- and light-duty diesel engines, respectively. Effects of various injection parameters such as start of injection (SOI) timing, split-main ratio and dwell period of the split-main injection strategy on in-cylinder temporal/spatial soot evolution in a light-duty diesel engine were subsequently investigated. The spatial soot distributions at each crank angle degree after start of injection were found to be insensitive to the change of values in SOI and split-main ratio when close-coupled injection was implemented. Soot cloud was also observed to be distributed towards the cylinder wall when a large separation of 20° was used, even with an advanced SOI timing of −6° after top dead centre (ATDC). The use of large separation is hence not desired for this combustion system as it potentially leads to soot deposition on surface oil film and greater tailpipe soot emissions.

AB - In this reported work, computational study on the formation processes of soot particles from diesel combustion is conducted using an approach where Computational Fluid Dynamics (CFD) is coupled with a chemical kinetic model. A multi-step soot model which accounts for inception, surface growth, coagulation and oxidation was applied. Model constant values in the Moss–Brookes soot formation and Fenimore–Jones soot oxidation models were calibrated, and were validated against in-cylinder soot evolution and exhaust soot density of both heavy- and light-duty diesel engines, respectively. Effects of various injection parameters such as start of injection (SOI) timing, split-main ratio and dwell period of the split-main injection strategy on in-cylinder temporal/spatial soot evolution in a light-duty diesel engine were subsequently investigated. The spatial soot distributions at each crank angle degree after start of injection were found to be insensitive to the change of values in SOI and split-main ratio when close-coupled injection was implemented. Soot cloud was also observed to be distributed towards the cylinder wall when a large separation of 20° was used, even with an advanced SOI timing of −6° after top dead centre (ATDC). The use of large separation is hence not desired for this combustion system as it potentially leads to soot deposition on surface oil film and greater tailpipe soot emissions.

U2 - 10.1016/j.enconman.2012.01.015

DO - 10.1016/j.enconman.2012.01.015

JO - Energy Conversion and Management

JF - Energy Conversion and Management

SN - 0196-8904

VL - 58

SP - 171

EP - 184

ER -