On the basis of a control-oriented mean-value model of a spark-ignition engine supercharged with a pressure-wave supercharger, this paper introduces an operation strategy which minimizes the torque response time to driver commands. Since in pressure-wave superchargers fresh air and exhaust gas are in direct contact in the cell wheel, unwanted and excessive exhaust gas recirculation over the pressure-wave supercharger has to be limited by appropriate control actions. The most critical situation arises when large amounts of exhaust gas are recirculated during a hard acceleration, which causes the engine torque to drop sharply and thus to severely affect driveability. In order to prevent such situations, a set of actuators (throttles, valves, etc.) has to be controlled in a coordinated way. Conventional strategies cause the actuators to be closed at a fairly slow, steady rate. Our investigations show that driveability can be improved with a somewhat more complex strategy.
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ASME 2003 Internal Combustion Engine Division Spring Technical Conference
May 11–14, 2003
Salzburg, Austria
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
0-7918-3678-9
PROCEEDINGS PAPER
Optimal Control Strategy for a Pressure-Wave Supercharged SI Engine
Peter Spring,
Peter Spring
Swiss Federal Institute of Technology, Zurich, Switzerland
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Lino Guzzella,
Lino Guzzella
Swiss Federal Institute of Technology, Zurich, Switzerland
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Christopher H. Onder
Christopher H. Onder
Swiss Federal Institute of Technology, Zurich, Switzerland
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Peter Spring
Swiss Federal Institute of Technology, Zurich, Switzerland
Lino Guzzella
Swiss Federal Institute of Technology, Zurich, Switzerland
Christopher H. Onder
Swiss Federal Institute of Technology, Zurich, Switzerland
Paper No:
ICES2003-0645, pp. 461-468; 8 pages
Published Online:
February 4, 2009
Citation
Spring, P, Guzzella, L, & Onder, CH. "Optimal Control Strategy for a Pressure-Wave Supercharged SI Engine." Proceedings of the ASME 2003 Internal Combustion Engine Division Spring Technical Conference. Design, Application, Performance and Emissions of Modern Internal Combustion Engine Systems and Components. Salzburg, Austria. May 11–14, 2003. pp. 461-468. ASME. https://doi.org/10.1115/ICES2003-0645
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