Supervisory multiple-model approach to multivariable lambda and torque control of sI engines

P. Majeckie, H. Javaherian, M.J. Grimble

Research output: Contribution to conferencePaper

2 Citations (Scopus)
47 Downloads (Pure)

Abstract

The problem of simultaneous air-fuel ratio regulation and torque tracking in a spark ignition engine with electronic throttle control is considered. The proposed methodology involves the use of a set of piecewise-affine models to represent the nonlinear engine dynamics. These models are the basis of a supervisory multiple-model control scheme, which, in its simplest form, consists in switching among the predefined bank of controllers. In the following a monitoring signal generator is driven by a bank of observers, and a supervisor ensures the robustness of the switching scheme. An optimal linear-quadratic cost function enables the trade-off between emissions performance and drivability to be adjusted. Simulation results using the data obtained from a vehicle with a 5.3L V8 engine on Federal Test Procedure (FTP) driving cycles are presented, with a nonlinear regression model of the engine identified from the FTP data. The results indicate that both tight lambda regulation and fast torque tracking are possible using the proposed designs.
Original languageEnglish
DOIs
Publication statusPublished - Dec 2009
Event2009 IFAC Workshop on Engine and Powertrain Control, Simulation and Modeling - Rueil-Malmaison, France
Duration: 30 Nov 20092 Dec 2009

Conference

Conference2009 IFAC Workshop on Engine and Powertrain Control, Simulation and Modeling
CityRueil-Malmaison, France
Period30/11/092/12/09

Keywords

  • multivariable lambda
  • torque control
  • sl engines
  • engine modelling
  • powertrain control

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    Majeckie, P., Javaherian, H., & Grimble, M. J. (2009). Supervisory multiple-model approach to multivariable lambda and torque control of sI engines. Paper presented at 2009 IFAC Workshop on Engine and Powertrain Control, Simulation and Modeling, Rueil-Malmaison, France, . https://doi.org/10.3182/20091130-3-FR-4008.00004