发动机电磁驱动配气机构性能试验

摘要/Abstract

摘要： 为验证自行研制的动圈式电磁驱动配气机构（EMVT）柔性化控制气门运动的能力及其运行稳定性，搭建了以数字信号处理器（DSP）为核心控制器的试验平台并进行了相关性能试验。提出了EMVT实际应用于发动机进气系统的控制系统方案，搭建了基于dSPACE系统和CAN总线的半实物仿真试验平台。试验结果表明，该电磁驱动配气机构的气门开启和关闭的最小过渡时间为2.7ms，平均气门落座速度为0.028m/s ，满足高速响应和缓落座的要求，且功耗较小；每个气门均可独立控制；可对配气定时、气门开启持续期、气门过渡时间、气门升程等参数实现柔性化调节；在低、中、高转速下都能长时间稳定运行。半实物仿真试验也验证了所提控制系统方案的可行性。

关键词: 电磁驱动配气机构, 柔性控制, dSPACE系统, 半实物仿真

Abstract: To test the flexible control and operation stability of valve motions by the self-developed moving coil EMVT, a test platform was constructed based on digital signal processor (DSP) as the core controller and the performance tests were carried out. And a control system scheme was proposed for practical applications of EMVT, a hardware-in-the-loop simulation platform was constructed based on dSPACE platform and controller area network (CAN) bus. The test results show that the EMVT may achieve a minimum transition time for value opening and closing is as 2.7 ms and the average value seating velocity is as 0.028 m/s, which meet the requirements of rapid response and valve soft landing, and the EMVT has the characteristics of low powers, each valve may be controlled individually. The EMVT may realize the flexible adjustment of the valve timing, the valve opening duration, the valve transition time and the valve lift, and may ensure stable operations for a long time at low, middle and high engine speeds. The feasibility of the proposed control system scheme is validated by the hardware-in-the-loop simulation.

Key words: electromagnetic valvetrain（EMVT）, flexible control, dSPACE system, hardware-in-the-loop simulation

中图分类号:

陈慧涛;常思勤;范爱民. 发动机电磁驱动配气机构性能试验[J]. 中国机械工程.

CHEN Huitao;CHANG Siqin;FAN Aimin. Performance Tests of Engine Electromagnetic Valvetrains[J]. China Mechanical Engineering.

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