OPTIMIZATION OF 2-STAGE TURBOCHARGED GAS SI ENGINE UNDER STEADY STATE OPERATION
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00321433" target="_blank" >RIV/68407700:21220/17:00321433 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
OPTIMIZATION OF 2-STAGE TURBOCHARGED GAS SI ENGINE UNDER STEADY STATE OPERATION
Original language description
The proposed paper deals with an optimization of a highly-turbocharged large-bore gas SI engine. Only steady state operation (constant engine speed and load) is considered. The paper is mainly focused on heoretical potential of 2-stage turbocharging concept in terms of performance and limitation. The results are obtained by means of simulation using complex 0-D/1-D engine model including the control algorithm. Different mixture composition concepts are considered to satisfy different levels of NOx limit – fresh air mixed with external cooled EGR is supposed to be the right approach while optimal EGR level is to be found. Considering EGR circuit, 5 different layouts are tested to select the best design. As the engine control is relatively complex (2-sage turbocharger group, external EGR, compressor blow-by, controlled air excess), 5 different control means of boost pressure were considered. Each variant based on above mentioned options is optimized in terms of compressor/turbine size (swallowing capacity) to obtain the best possible BSFC. The optimal variants are compared and general conclusions are drawn.
Czech name
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Czech description
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Classification
Type
J<sub>ost</sub> - Miscellaneous article in a specialist periodical
CEP classification
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OECD FORD branch
20303 - Thermodynamics
Result continuities
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)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
MECCA Journal of Middle European Construction and Design of Cars
ISSN
1214-0821
e-ISSN
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Volume of the periodical
XV
Issue of the periodical within the volume
02
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
28
Pages from-to
9-36
UT code for WoS article
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EID of the result in the Scopus database
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