Numerical investigation of two-stage turbocharging systems performance

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In regulated two-stage sequential turbocharging systems, a smaller, high pressure (HP), and a larger, low pressure (LP), turbocharger are sequentially positioned to recover the energy available in the exhaust gases and deliver acceptable level of boost to the intake of an internal combustion engine. Due to the different sizes of the turbochargers, by-pass valves are placed in the system to control operations. Due to the turbocharging system layout, it is clear that the air pressurized by the LP compressor enters nonuniformly the HP compressor. This is caused by the rotating radial compressor and the interconnecting bends which cause swirl and velocity to scatter, respectively. Furthermore, the heat transfer in the two turbochargers may have an effect on the apparent efficiencies. For these reasons, the standard mapping approach for turbochargers is not able to take into account the effect of non-uniform flow and heat transfer. In this paper, a novel approach for mapping the two-stage turbocharging system is proposed and performed into a monodimensional simulation code. Although, flow non-uniformity and turbochargers heat transfer effects on the performance of the turbocharging system are not considered, at this present time, the study centralizes on the investigation and the validation of the mapping approach. In fact, a two-stage sequential turbocharging system has been considered for the study and a simulation code to investigate the mapping technique has been implemented.

LanguageEnglish
Title of host publicationASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791850503
DOIs
StatusPublished - 9 Oct 2016
EventASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016 - Greenville, USA United States
Duration: 9 Oct 201612 Oct 2016

Conference

ConferenceASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016
CountryUSA United States
CityGreenville
Period9/10/1612/10/16

Fingerprint

Compressors
Heat transfer
Exhaust gases
Internal combustion engines
Air

Cite this

Avola, C., Copeland, C., Burke, R., & Brace, C. (2016). Numerical investigation of two-stage turbocharging systems performance. In ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016 [ICEF2016-9449] American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/ICEF20169449

Numerical investigation of two-stage turbocharging systems performance. / Avola, Calogero; Copeland, Colin; Burke, Richard; Brace, Christian.

ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016. American Society of Mechanical Engineers (ASME), 2016. ICEF2016-9449.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Avola, C, Copeland, C, Burke, R & Brace, C 2016, Numerical investigation of two-stage turbocharging systems performance. in ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016., ICEF2016-9449, American Society of Mechanical Engineers (ASME), ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016, Greenville, USA United States, 9/10/16. https://doi.org/10.1115/ICEF20169449
Avola C, Copeland C, Burke R, Brace C. Numerical investigation of two-stage turbocharging systems performance. In ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016. American Society of Mechanical Engineers (ASME). 2016. ICEF2016-9449 https://doi.org/10.1115/ICEF20169449
Avola, Calogero ; Copeland, Colin ; Burke, Richard ; Brace, Christian. / Numerical investigation of two-stage turbocharging systems performance. ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016. American Society of Mechanical Engineers (ASME), 2016.
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