Boost system selection for a heavily downsized spark ignition prototype engine

Colin Copeland, Ricardo Martinez-Botas, James Turner, Richard Pearson, N Luard, Chris Carey, Steve Richardson, Paolo Di Martino, Petr Chobola

Research output: Contribution to conferencePaper

15 Citations (Scopus)

Abstract

The Ultraboost project outlined in this paper seeks to develop a highly pressure-charged, downsized, spark ignition engine that is capable of a 35% reduction in tailpipe CO2 emissions over a naturally aspirated 5.0L V8 while still maintaining performance, emissions and transient response. This project is especially ambitious since, in order to achieve this level of fuel economy improvement, a 60% reduction in engine displacement is targeted with a BMEP of greater than 30bar. What is more, achieving these targets in a gasoline engine with stoichiometric fuelling requires careful design and component selection in order to address the many challenges surrounding gasoline combustion under such high boost pressures. This paper describes a critical examination of the competing requirements of a heavily downsized, gasoline engine with a specific focus on the role of the boosting system in delivering these requirements. From this analysis, the optimal base boosting system configuration is investigated. In addition, a number of boosting technologies, ranging from the novel to the more traditional, are discussed in view of their ability to fulfil a role on the Ultraboost engine. A set of assessment criteria is presented in order to facilitate the selection process. Finally, a 1-D GT-Power model of the Ultraboost engine equipped with the different boosting systems was used to generate an informed rating of all boosting options and permit a reliable comparison with respect to the targets of the project.
Original languageEnglish
Publication statusPublished - 2012
Event10th IMECHE International Conference on Turbochargers and Turbocharging - London, UK United Kingdom
Duration: 15 May 201216 May 2012

Conference

Conference10th IMECHE International Conference on Turbochargers and Turbocharging
CountryUK United Kingdom
CityLondon
Period15/05/1216/05/12

Fingerprint

Internal combustion engines
Engines
Gasoline
Fueling
Fuel economy
Transient analysis

Cite this

Copeland, C., Martinez-Botas, R., Turner, J., Pearson, R., Luard, N., Carey, C., ... Chobola, P. (2012). Boost system selection for a heavily downsized spark ignition prototype engine. Paper presented at 10th IMECHE International Conference on Turbochargers and Turbocharging, London, UK United Kingdom.

Boost system selection for a heavily downsized spark ignition prototype engine. / Copeland, Colin; Martinez-Botas, Ricardo; Turner, James; Pearson, Richard; Luard, N; Carey, Chris; Richardson, Steve; Di Martino, Paolo; Chobola, Petr.

2012. Paper presented at 10th IMECHE International Conference on Turbochargers and Turbocharging, London, UK United Kingdom.

Research output: Contribution to conferencePaper

Copeland, C, Martinez-Botas, R, Turner, J, Pearson, R, Luard, N, Carey, C, Richardson, S, Di Martino, P & Chobola, P 2012, 'Boost system selection for a heavily downsized spark ignition prototype engine' Paper presented at 10th IMECHE International Conference on Turbochargers and Turbocharging, London, UK United Kingdom, 15/05/12 - 16/05/12, .
Copeland C, Martinez-Botas R, Turner J, Pearson R, Luard N, Carey C et al. Boost system selection for a heavily downsized spark ignition prototype engine. 2012. Paper presented at 10th IMECHE International Conference on Turbochargers and Turbocharging, London, UK United Kingdom.
Copeland, Colin ; Martinez-Botas, Ricardo ; Turner, James ; Pearson, Richard ; Luard, N ; Carey, Chris ; Richardson, Steve ; Di Martino, Paolo ; Chobola, Petr. / Boost system selection for a heavily downsized spark ignition prototype engine. Paper presented at 10th IMECHE International Conference on Turbochargers and Turbocharging, London, UK United Kingdom.
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