电液驱动可变气机构缓冲过程研究

发布时间：2018-07-09 22:52

本文选题：AMESim仿真 + 电液驱动　；参考：《中国机械工程》2016年19期

【摘要】：电液驱动可变气门机构缓冲过程影响气门机构的冲击性能及气门运动的响应性能。基于AMESim仿真软件,设计了电液驱动可变气门系统,研究了节流阀节流面积和节流行程对气门运动缓冲过程的影响规律,并采用遗传算法对节流阀控制参数进行寻优,改善气门运动缓冲性能。结果表明,减小节流行程和增大节流面积可以提高气门运动的响应性能。通过遗传算法对控制参数进行寻优,在优化的控制参数下气门行程终了速度明显改善,气门开启至最大行程时速度降至0.11m/s,气门关闭落座速度降至0.07m/s,同时保证气门运动的响应性能。
[Abstract]:The shock performance of valve mechanism and the response performance of valve movement are affected by the buffer process of electro-hydraulic variable valve mechanism. Based on AMESim simulation software, the electro-hydraulic drive variable valve system is designed. The influence of throttle area and throttle stroke on the valve motion buffer process is studied, and the control parameters of throttle valve are optimized by genetic algorithm. Improved valve motion buffering performance. The results show that the response performance of valve motion can be improved by reducing throttle stroke and increasing throttle area. Through genetic algorithm to optimize the control parameters, the valve end travel speed is improved obviously under the optimized control parameters. When the valve opens to the maximum stroke, the velocity drops to 0.11 m/ s, and the valve closes and sits down to 0.07 m / s, while ensuring the response performance of the valve motion.
【作者单位】：天津大学内燃机燃烧学国家重点实验室;
【基金】：国家自然科学基金资助项目(51476114)
【分类号】：TK403

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