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Title:
Analiza visokotlačnega in nizkotlačnega vračanja izpušnih plinov v tlačno polnjenem dizelskem motorju
Authors:
ID
Hribernik, Aleš
(
Author
)
ID
Bombek, Gorazd
(
Author
)
Files:
http://www.dlib.si/details/URN:NBN:SI:doc-ZIQRMW6G
Language:
Slovenian
Work type:
Not categorized
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Abstract:
Vračanje izpušnih plinov je učinkovita metoda za zmanjšanje emisije dušikovih oksidov (NOx). Dva različna postopka vračanja izpušnih plinov se lahko uporabita za tlačno polnjene dizelske motorje. Pri nizkotlačnem postopku vodimo del izpusnih plinov, ki iztekajo iz turbine, na polnilno stran motorja,kjer se pomešajo s svežim zrakom. Alternativna pot je visokotlačni postopek. Pri tem postopku odvzemamo del izpušnih plinov že pred turbino in jih pri nadtlaku tlačimo v polnilni zbiralnik za kompresorjem. Z enorazsežno metodo smo simulirali tokovne in termodinamične procese v štirivaljnem motorju z vračanjem izpušnih plinov po obeh postopkih. Raziskali smo možnost doseganja želene stopnje vračanja z obema postopkoma in njun vpliv na obratovalne karakteristike motorja in turbokompresorja. Rezultati so prikazani v prispevku.
Publisher:
Association of Mechanical Engineers and Technicians of Slovenia et al.
Year of publishing:
2004
Number of pages:
str. 3-14
Numbering:
Letn. 50, št. 1
PID:
20.500.12556/DKUM-53035
UDC:
621.43.031:621.43.06
ISSN on article:
0039-2480
COBISS.SI-ID:
7210779
NUK URN:
URN:SI:UM:DK:HYJIP9O8
Publication date in DKUM:
10.07.2015
Views:
1090
Downloads:
49
Metadata:
Categories:
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Record is a part of a journal
Title:
Strojniški vestnik
Shortened title:
Stroj. vestn.
Publisher:
Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
ISSN:
0039-2480
COBISS.SI-ID:
762116
Secondary language
Language:
English
Title:
An analysis of the application of high- and low-pressure exhaust-gas recirculation to a turbocharged diesel engine
Abstract:
Exhaust-gas recirculation (EGR) is an effective way of reducing NOx emissions.Two different strategies can be applied when using EGR in a turbocharged diesel engine. The first one is known as low-pressure EGR, where a passage is provided enabling exhaust gasses from below the turbine to pass to the fresh-air side of the engine. Its alternative is high-pressure EGR. In this EGR configuration the exhaust gas is withdrawn from the exhaust manifold above the turbine and fed to the intake manifold below the compressor. The applications of both strategies to a four-cylinder diesel engine were studied by means of a one-dimensional simulation. The possible range of EGR applications for both concepts and their effects on the engine and turbocharger operations were examined and are discussed in this paper.
Keywords:
internal combustion engine
,
exhaust gas recirculation
,
NOx emissions
,
measurements
,
simulations
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