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Energies 2016, 9(7), 530; doi:10.3390/en9070530

Boost Pressure Control Strategy to Account for Transient Behavior and Pumping Losses in a Two-Stage Turbocharged Air Path Concept

1
Institute of Automatic Control, RWTH Aachen University, Steinbachstr. 54, Aachen 52074, Germany
2
Institute for Combustion Engines, RWTH Aachen University, Forckenbeckstr. 4, Aachen 52074, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Dirk Söffker
Received: 2 May 2016 / Revised: 20 June 2016 / Accepted: 23 June 2016 / Published: 11 July 2016
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Abstract

Increasingly complex air path concepts are investigated to achieve a substantial reduction in fuel consumption while improving the vehicle dynamics. One promising technology is the two-stage turbocharging for gasoline engines, where a high pressure and a low pressure turbocharger are placed in series. For exploiting the high potential, a control concept has to be developed that allows for coordinated management of the two turbocharger stages. In this paper, the control strategy is investigated. Therefore, the effect of the actuated values on transient response and pumping losses is analyzed. Based on these findings, an optimization-based control algorithm is developed that allows taking both requirements into account. The developed new controller allows achieving a fast transient response, while at the same time reducing pumping losses in stationary operation. View Full-Text
Keywords: internal combustion engines; two-stage turbocharging; boost pressure control; air path control internal combustion engines; two-stage turbocharging; boost pressure control; air path control
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Albin, T.; Ritter, D.; Liberda, N.; Abel, D. Boost Pressure Control Strategy to Account for Transient Behavior and Pumping Losses in a Two-Stage Turbocharged Air Path Concept. Energies 2016, 9, 530.

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