文章基本信息

标题：Indicated Torque Estimation of Gasoline Direct Injection Engine via Optimized Model-Based Observer
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作者：Qiang Tong ; Hui Xie ; Dong Zou 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2018
卷号：51
期号：31
页码：827-832
DOI：10.1016/j.ifacol.2018.10.120
语种：English
出版社：Elsevier
摘要：AbstractThe indicated torque (TQin) is regarded as a key variable for both control and diagnostics of the combustion of gasoline engines. Due to the limitation in available sensors, the TQin, however, cannot be measured directly. In this paper, a real-time TQinestimation approach is presented, based on the instantaneous crankshaft rotational speed (ω) signal. A physics-based control-oriented model ω is developed for a four-cylinder gasoline direct engine, which takes account the load torque, friction torque and the indicated torque. The proposed observer are validated both in simulation and experiments at steady-state operating and during transients. Results show that deviation between the observed value and the actual value is within 4%. The optimized model based observer shows greater potential in engine combustion feedback control.
关键词：KeywordsInternal combustion enginesindicated torqueextended state observer