Spark advance self-optimization with knock probability threshold for lean-burn operation mode of SI engine

Xun Shen, Yahui Zhang, Tielong Shen and Chanyut Khajorntraidet

Energy, 2017, vol. 122, issue C, 1-10

Abstract: In this paper, a spark advance self-optimization strategy is presented for lean-burn operation mode of spark-ignition (SI) engine which aims on-board combustion phase tuning to achieve high efficiency under a probability constraint of knocking events. Firstly, the effects of spark advance (SA) on combustion phase under lean-condition are analyzed in a statistical perspective based on experiments. Then, based on conclusion of the analysis, a SA control scheme, which combines extremum seeking loop with likelihood-based knock limit control loop, is proposed to optimize SA for maximal fuel economy with knock probability threshold. Finally, experimental validation results are demonstrated that are conducted on a test bench with a V6 commercial SI engine.

Keywords: Lean-burn; Spark advance; Self-optimization; Knock control (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:122:y:2017:i:c:p:1-10

DOI: 10.1016/j.energy.2017.01.065

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