摘要
液压约束活塞发动机是一种新型液压动力系统,配流阀系统是其中不可缺少的重要元件。对配流系统进行最优化设计,可大幅度地缩短系统设计周期,改善设计方案,从而达到提高整机产品质量的目的。基于最优化技术,采用对容积效率和阀的寿命线性加权的方法,得出了总目标函数,建立液压约束活塞发动机配流系统的优化模型。通过Matlab语言程序对其进行优化设计,对优化数学模型进行求解。对优化前后的结果进行分析,优化后吸入阀和排出阀的冲击力分别下降了48.77%和44.50%,优化后的容积效率提高了10.06%。计算结果表明,所采用的算法是可行的、有效的。对此系统的出水阀压力和流量随转速、油门的变化关系进行试验研究,将试验结果与仿真结果进行对比,仿真结果与试验结果非常接近,误差在6%以内。从而验证了液压约束活塞发动机阀式配流系统优化模型的正确性与精确性。
Hydraulic confined piston engine is a new type hydraulic power system. The valve type orifice system is an indispensable component in it. The optimization design of the valve type orifice system can shorten design cycle significantly and improve design project so as to achieve the aim of improving the whole engine quality. Based on the optimization technology, the overall objective function is achieved through liner weighted method of cubage efficiency and valve life. The optimization model of valve type orifice system of hydraulic confined piston engine is built. The optimization design is carded out by using Matlab language and the optimization mathematic model is resolved. The results before and after optimization are analyzed. After optimization, the impact forces of inlet valve and outlet valve drop 48.77 percent and 44.50 percent respectively, and the cubage efficiency rises 10.06 percent. The results indicate that the arithmetic is feasible and effective. The experimental work of this system is carded out, and the change of outlet valve pressure and flow rate along with the change of speed and accelerator is studied. The experimental results are very close to the simulation results, and the error is within 6 percent, thus verifying the correctness and precision of the optimization model of valve type orifice system of hydraulic confined piston engine.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2009年第8期197-202,共6页
Journal of Mechanical Engineering
基金
国家自然科学基金(50575107)
山东省自然科学基金(Y2006F06)资助项目
关键词
配流系统
优化设计
试验验证
Valve type orifice system Optimization design Experimental verification
