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A survey on online learning and optimization for spark advance control of SI engines

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Abstract

One of the most important factors affecting fuel efficiency and emissions of automotive engines is combustion quality that is usually controlled by managing spark advance (SA) in spark ignition (SI) engines. With increasing sensing capabilities and enhancements in on-board computation capability, online learning and optimization techniques have been the subject of significant research interest. This article surveys the literature of learning and optimization algorithms with applications to combustion quality optimization and control of SI engines. In particular, this paper reviews extremum seeking control algorithms for iterative solution of online optimization problems, stochastic threshold control algorithms for iterative solution of probability control of stochastic knock event, as well as feedforward learning algorithms for iterative solution of operating-point-dependent feedforward adaptation problems. Finally, two experimental case studies including knock probabilistic constrained optimal combustion control and on-board map learning-based combustion control are carried out on an SI gasoline engine.

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Acknowledgements

The authors would like to thank Toyota Motor Corporation, Japan, for the financial and technical supports in this research.

Author information

Correspondence to Xun Shen.

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Zhang, Y., Shen, X. & Shen, T. A survey on online learning and optimization for spark advance control of SI engines. Sci. China Inf. Sci. 61, 70201 (2018). https://doi.org/10.1007/s11432-017-9377-7

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Keywords

  • online learning
  • stochastic optimization
  • iterative solution
  • combustion control
  • spark ignition engine