Diesel combustion model for on-board application
Diesel combustion model for on-board application
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DOI：
10.1177/1468087415611331
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发表时间：
2016-09
影响因子：
2.5
通讯作者：
Kazuma Yasuda;Y. Yamasaki;S. Kaneko;Yusuke Nakamura;N. Iida;Ryo Hasegawa
中科院分区：
文献类型：
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作者：
Kazuma Yasuda;Y. Yamasaki;S. Kaneko;Yusuke Nakamura;N. Iida;Ryo Hasegawa
柴油机在良好的运行控制下表现出高效、环保的性能，然而，由于需要在各种环境条件下控制多个执行器，传统的柴油机控制实验方法变得越来越困难。因此，最终开发了计算量较小的柴油机燃烧模型，以期在未来的发动机控制单元中实现这种基于模型的控制器。为了实现柴油机燃烧模型的车载应用，将单循环缸内状态离散为几个具有代表性的阶段，如开闭气门阶段、点火阶段和最大压力阶段。温度和残气中的氧气量被认为是系统的状态变量，因为它们对燃烧有至关重要的影响，并且会引起循环耦合。该模型考虑了执行机构在柴油机中的作用，利用热力学基本方程和一些经验方程计算了各阶段的状态。根据实验结果对模型进行了验证，并与各阶段的缸内压力和温度进行了比较，吻合较好。此外，模型的计算时间也被确认为可以在船上应用。并将其应用于柴油机多输入/多输出控制的仿真研究中，以此为例说明该模型的附加价值。
Diesel engines exhibit highly efficient, environmentally sound performance under good operational control; however, because of the demand of controlling multiple actuators under various environmental conditions, the conventional experimental method for controlling diesel engines has become increasingly difficult. Therefore, diesel combustion models with less calculation loads were ultimately developed with the aim of implementing such model-based controllers for engine control unit in the future. To achieve the on-board application of the diesel combustion model, the in-cylinder state of a single cycle was discretized into several representative phases such as a valve-opening and valve-closing phase, ignition phase, and maximum pressure phase. Temperature and oxygen quantities in residual gas were considered as the state variables of the system because they have a critical effect on combustion and induce cyclic coupling. The model could take account of the effect of actuators in diesel engines, and the states in each phase were calculated by fundamental thermodynamic equations and some empirical equations. The model was validated against experimental results and had a good agreement with in-cylinder pressures and temperatures at each phase. In addition, the calculation times of the model were confirmed to be capable of on-board application. Furthermore, as a demonstrative example and to show the added value of the model, it was used to synthesize controllers to enable multi-input/multi-output control of a diesel engine in simulation.