Emission constrained multiple-pulse fuel injection optimisation and control for fuel-efficient diesel engines
Emission constrained multiple-pulse fuel injection optimisation and control for fuel-efficient diesel engines
复制标题
节能柴油机的排放约束多脉冲燃油喷射优化和控制
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
F. Willems
中科院分区：
文献类型：
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作者：
Xi Luo;B. D. Jager;F. Willems
随着多脉冲喷油规律的应用，柴油机的低油耗和低排放性能得到了提高。然而，由于喷油定时参数的数量较多，校准工作增加。由于各个燃油喷射脉冲之间的耦合，控制燃烧阶段的难度也增加了。为了追求更高效的柴油发动机，每个燃油喷射脉冲都需要优化并积极控制，以防止部件老化、环境条件变化和燃料变化。本文提出了一种同时考虑扭矩输出和发动机排气要求的离线计算最优多脉冲喷油规律的方法。设计了一个多输入多输出反馈控制器来调节整个喷油器的喷油曲线，使其不受干扰。给出了基于某重型卡车发动机模型的数值模拟结果。
With the application of multiple-pulse fuel injection profiles, the performance of diesel engines is enhanced in terms of low fuel consumption and low engine-out emission levels. However, the calibration effort increases due to a larger number of injection timing parameters. The difficulty of controlling the combustion phase also increases because of coupling between individual fuel injection pulses. In the pursuit of more efficient diesel engines, each fuel injection pulse needs to be optimised and actively controlled against component ageing, ambient condition changes and fuel variations. This paper presents an off-line method to compute the optimal multiple-pulse fuel injection profile with explicit considerations of both torque output and engine-out emission requirements. A multi-input multi-output feedback controller is designed to regulate the entire fuel injection profile against disturbances. Numerical simulation results are given based on a heavy-duty truck engine model.