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In-Cycle Closed-Loop Combustion Control with Pilot-Main Injections for Maximum Indicated Efficiency

机译：具有先导主喷射的循环闭环燃烧控制，可实现最大的指示效率

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摘要

An in-cycle closed-loop combustion controller is proposed in this paper. The controller uses a pilot-main injection scheme where the cycle-individual properties of the pilot combustion are estimated by in-cylinder pressure measurements, and used to predict their effect on the heat release shape of the main combustion. The prediction is used to obtain the optimal main SOI that gives the Maximum Reachable Indicated Efficiency (MRE). The optimal law was linearised to obtain a linear controller that adjusts the main SOI and main duration to obtain the MRE given the conditions of each cycle. The controller was implemented in an FPGA and tested on a Scania D13 Diesel engine. The results show that the main SOI control improves the indicated efficiency. However, the linear controller application is limited due to the non-linear behaviour of the system, which is dependent on the fuel type.
机译：本文提出了一种循环内闭环燃烧控制器。控制器使用先导主喷射方案，其中先导燃烧的循环个体特性通过缸内压力测量值估算，并用于预测其对主燃烧放热形状的影响。该预测用于获得给出最大可达到指示效率（MRE）的最佳主SOI。最优定律被线性化以获得线性控制器，该线性控制器调整主SOI和主持续时间以获得给定每个周期条件的MRE。该控制器在FPGA中实现，并在Scania D13柴油机上进行了测试。结果表明，主要的SOI控制可提高指示效率。但是，线性控制器的应用受到限制，因为系统的非线性行为取决于燃料类型。

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