| 液压自由活塞发动机活塞运动规律动态仿真研究 |
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| 引用本文： | 刘嘉,黄英,张付军,赵振峰.液压自由活塞发动机活塞运动规律动态仿真研究[J].内燃机工程,2011,32(3). |
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| 作者姓名： | 刘嘉 黄英 张付军 赵振峰 |
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| 作者单位： | 北京理工大学军用车辆动力系统技术国防重点学科实验室,北京,100081 |
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| 摘 要： | 为研究液压自由活塞发动机(HFPE)的活塞运动特性,建立了液压自由活塞发动机动态仿真模型,针对循环供油量、喷油定时、气门正时、压缩压力、负载压力等主要控制变量对活塞运动情况的影响进行了规律性研究.结果表明:各控制变量的变化影响活塞受力的变化,进而使活塞的下止点位置和压缩比发生变化,并影响发动机的正常运转和性能;循环油量与活塞膨胀行程长度、压缩能量与压缩比均近似呈线性关系;HFPE循环工作是一个多参数耦合和能量重新分配的复杂过程;执行器滞后引入的正时控制误差将是影响控制精度的重要因素.
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| 关 键 词： | 内燃机 液压自由活塞发动机 运动规律 动态仿真 |
Research on Piston Movement Dynamical Simulation of Hydraulic Free Piston Engine |
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| LIU Jia,HUANG Ying,ZHANG Fu-jun,ZHAO Zhen-feng.Research on Piston Movement Dynamical Simulation of Hydraulic Free Piston Engine[J].Chinese Internal Combustion Engine Engineering,2011,32(3). |
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| Authors: | LIU Jia HUANG Ying ZHANG Fu-jun ZHAO Zhen-feng |
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| Affiliation: | LIU Jia,HUANG Ying,ZHANG Fu-jun,ZHAO Zhen-feng(Laboratory for Military Vehicle Integrated Power System Technology,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | To study piston movement characteristics of the hydraulic free piston engine(HFPE),a simulation model of the HFPE was built up.The effects of cycle fuel delivery,injection timing,valve timing,compression pressure and load pressure on piston movement were investigated.Results indicate that these control variables can affect the forces applied on pistons,which varies the BDC position and engine compression ratio and performance.It is found that between expansion stroke and cycle fuel delivery,compression pres... |
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| Keywords: | IC engine hydraulic free piston engine(HFPE) movement rule dynamical simulation |
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