Cover Image

Comparison between the steady performance of double-entry and twin-entry turbocharger turbine

Most boosting systems in internal combustion engines utilize 'pulse turbocharging' to maximize the energy extraction by the turbine. An internal combustion engine with more than four cylinders has a significant overlap between the exhaust pulses which, unless isolated, can decrease the ove...

Full description

Saved in:
Bibliographic Details
Main Authors: Costall, Aaron, Romagnoli, Alessandro, Copeland, Colin, Seiler, Martin, Martinez-Botas, Ricardo, Rajoo, Srithar
Format: Conference or Workshop Item
Published: 2011
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/45675/
http://apps.webofknowledge.com.ezproxy.utm.my/full_record.do?product=WOS&search_mode=GeneralSearch&qid=21&SID=Z2RzuHO3hDaZlYzrhcv&page=1&doc=2
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utm.45675
record_format eprints
spelling my.utm.456752017-07-17T02:42:52Z http://eprints.utm.my/id/eprint/45675/ Comparison between the steady performance of double-entry and twin-entry turbocharger turbine Costall, Aaron Romagnoli, Alessandro Copeland, Colin Seiler, Martin Martinez-Botas, Ricardo Rajoo, Srithar TJ Mechanical engineering and machinery Most boosting systems in internal combustion engines utilize 'pulse turbocharging' to maximize the energy extraction by the turbine. An internal combustion engine with more than four cylinders has a significant overlap between the exhaust pulses which, unless isolated, can decrease the overall pulse energy and increase the engine pumping loss. Thus, it is advantageous to isolate a set of cylinders and introduce the exhaust gases into two or more turbine entries separately. There are two main types of multiple entry turbines depending on the method of flow division: the twin-entry and the double-entry turbine. In the twin-entry design, each inlet feeds the entire circumference of the rotor leading edge regardless of inlet conditions. In contrast, the double-entry design introduces the flow from each gas inlet into the rotor leading edge through two distinct sectors of the nozzle. This paper compares the performance of a twin and double-entry mixed flow turbine. The turbines were tested at Imperial College for a range of steady-state flow conditions under equal and unequal admission conditions. The performance of the turbines was then evaluated and compared to one another. Based on experimental data, a method to calculate the mass flow under unequal admission from the full admission maps was also developed and validated against the test results. 2011 Conference or Workshop Item PeerReviewed Costall, Aaron and Romagnoli, Alessandro and Copeland, Colin and Seiler, Martin and Martinez-Botas, Ricardo and Rajoo, Srithar (2011) Comparison between the steady performance of double-entry and twin-entry turbocharger turbine. In: Asme Turbo Expo 2011. http://apps.webofknowledge.com.ezproxy.utm.my/full_record.do?product=WOS&search_mode=GeneralSearch&qid=21&SID=Z2RzuHO3hDaZlYzrhcv&page=1&doc=2
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Costall, Aaron
Romagnoli, Alessandro
Copeland, Colin
Seiler, Martin
Martinez-Botas, Ricardo
Rajoo, Srithar
Comparison between the steady performance of double-entry and twin-entry turbocharger turbine
description Most boosting systems in internal combustion engines utilize 'pulse turbocharging' to maximize the energy extraction by the turbine. An internal combustion engine with more than four cylinders has a significant overlap between the exhaust pulses which, unless isolated, can decrease the overall pulse energy and increase the engine pumping loss. Thus, it is advantageous to isolate a set of cylinders and introduce the exhaust gases into two or more turbine entries separately. There are two main types of multiple entry turbines depending on the method of flow division: the twin-entry and the double-entry turbine. In the twin-entry design, each inlet feeds the entire circumference of the rotor leading edge regardless of inlet conditions. In contrast, the double-entry design introduces the flow from each gas inlet into the rotor leading edge through two distinct sectors of the nozzle. This paper compares the performance of a twin and double-entry mixed flow turbine. The turbines were tested at Imperial College for a range of steady-state flow conditions under equal and unequal admission conditions. The performance of the turbines was then evaluated and compared to one another. Based on experimental data, a method to calculate the mass flow under unequal admission from the full admission maps was also developed and validated against the test results.
format Conference or Workshop Item
author Costall, Aaron
Romagnoli, Alessandro
Copeland, Colin
Seiler, Martin
Martinez-Botas, Ricardo
Rajoo, Srithar
author_facet Costall, Aaron
Romagnoli, Alessandro
Copeland, Colin
Seiler, Martin
Martinez-Botas, Ricardo
Rajoo, Srithar
author_sort Costall, Aaron
title Comparison between the steady performance of double-entry and twin-entry turbocharger turbine
title_short Comparison between the steady performance of double-entry and twin-entry turbocharger turbine
title_full Comparison between the steady performance of double-entry and twin-entry turbocharger turbine
title_fullStr Comparison between the steady performance of double-entry and twin-entry turbocharger turbine
title_full_unstemmed Comparison between the steady performance of double-entry and twin-entry turbocharger turbine
title_sort comparison between the steady performance of double-entry and twin-entry turbocharger turbine
publishDate 2011
url http://eprints.utm.my/id/eprint/45675/
http://apps.webofknowledge.com.ezproxy.utm.my/full_record.do?product=WOS&search_mode=GeneralSearch&qid=21&SID=Z2RzuHO3hDaZlYzrhcv&page=1&doc=2
_version_ 1643651810096840704
score 13.211869

Similar Items