Impact of Intake Induced Swirl on Combustion and Emissions on a Single Cylinder Diesel Engine

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F16%3A00306331" target="_blank" >RIV/68407700:21220/16:00306331 - isvavai.cz</a>

Result on the web

<a href="http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleID=2590010" target="_blank" >http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleID=2590010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/ICEF2016-9325" target="_blank" >10.1115/ICEF2016-9325</a>

Result language

angličtina

Original language name

Impact of Intake Induced Swirl on Combustion and Emissions on a Single Cylinder Diesel Engine

Original language description

This study highlights the influence of intake induced swirl on combustion parameters and emissions. Assessed combustion parameters are, among others, heat release rate, cylinder pressure rise and indicated mean effective pressure. Assessed emissions are standard gaseous emissions and smoke, with emphasis on PM emissions. An engine speed of 1500 rpm was selected, which well represents common driving conditions of this engine size. Various common rail pressures are used at ambient inlet manifold pressure (without boost pressure) and at 1 bar boosted pressure mode. It is found that when the swirl level is increased, the faster heat release during the premixed combustion and during early diffusion-controlled combustion causes a quick increase in both in-cylinder pressure and temperature, thus promoting the formation of NOx. However, since swirl enhances mixing and potentially produces a leaning effect, PM formation is reduced in general. However, maximum peak temperature is lower for high swirl ratio and boosted modes due to the increase of heat transfer into cylinder walls. Furthermore, it is necessary to find optimal values of common rail pressures and swirl ratio. Too much mixing allows increase on PM, THC and CO emissions without decrease on NOx emissions in general. Common rail injection system provides enough energy to achieve good mixing during all the injection time in the cases of supercharged modes and high common rail pressure modes. Positive influence of swirl ratio is found at lower boost pressures, lower revolution levels and at lower engine loads. The results obtained here help providing a better understanding on the swirl effects on diesel engine combustion and exhaust emissions over a range of engine operating conditions, with the ultimate goal of finding optimal values of swirl operation.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JT - Propulsion, engines and fuels

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

ASME 2016 Internal Combustion Engine Fall Technical Conference (ICEF2016)

ISBN

978-0-7918-5050-3

ISSN

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e-ISSN

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Number of pages

11

Pages from-to

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Publisher name

American Society of Mechanical Engineers - ASME

Place of publication

New York

Event location

Greenville, South Carolina, USA

Event date

Oct 9, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000392464100046