Operation Range of Generation Braking Force to Achieve High Efficiency Considering Combustion in a Free-Piston Engine Linear Generator System
Operation Range of Generation Braking Force to Achieve High Efficiency Considering Combustion in a Free-Piston Engine Linear Generator System
复制标题
考虑到自由活塞发动机线性发电机系统中的燃烧，实现高效率的发电制动力的操作范围
DOI：
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发表时间：
2018
影响因子：
1.7
通讯作者：
T. Mizuno
中科院分区：
文献类型：
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作者：
Mitsuhide Sato;M. Nirei;Y. Yamanaka;H. Murata;Y. Bu;T. Mizuno
线性发电机系统有望实现高效的自由活塞发电发动机。系统的效率主要取决于发动机的发电效率和热效率。由于膨胀冲程上的大制动力和冲程末端的速度降低，发电效率降低。本文提出了一种具有谐振和输出下降的发电控制方法，以提高膨胀冲程的发电效率。当改变消耗的燃料量时，可以通过优化铁铜损耗的比率来实现发电量最大化的条件。此外，所提出的方法通过确保燃烧开始位置处的理想转速来改善发动机的燃烧性能。
A linear generator system is expected to realize a highly efficient free-piston generation engine. The efficiency of the system mainly depends on the generation and thermal efficiencies of the engine. The generation efficiency decreases owing to a large braking force on the expansion stroke and a speed reduction at the ends of the stroke. This paper proposes generation control with resonance and output drop that improves the generation efficiency during the expansion stroke. When changing the amount of consumed fuel, the condition to maximize the electricity generation can be achieved by optimizing the ratio of the iron to copper losses. Furthermore, the proposed method improves the combustion performance of the engine by ensuring ideal speed at the combustion start position.