气动-内燃混合动力系统的电液可变气门研究  

Electro-hydraulic variable valve system for hybrid pneumatic-internal combustion engine

作　　者：叶锦[1] 李道飞[1] 王雷[1] 徐焕祥[1] 俞小莉[1] 

机构地区：[1]浙江大学能源工程学系,浙江杭州310027

出　　处：《机电工程》2013年第8期914-918,951,共6页Journal of Mechanical & Electrical Engineering

基　　金：国家重点基础研究发展计划("973"计划)资助项目(2011CB707205);国家自然科学基金资助项目(50976104)

摘　　要：针对气动-内燃混合动力在不同工作模式下顺利切换的关键问题,开展了电液驱动全可变气门开发研究。介绍了气动-内燃混合动力的不同工作模式,基于热力循环,分析了3种关键工作模式下的可变气门控制策略。以低速工况下混合动力系统气动模式为例,设计开发了无复位弹簧电液全可变气门原型样机,利用高速开关电磁阀控制可变气门液压油路通断,并基于NI-CompactRIO平台开发了可变气门控制系统,最后对电液气门进行了初步的试验分析。研究结果表明,电液全可变气门存在一定的响应延时,通过控制进油时间和保持时间,可以实现气门升程和正时的调整,满足气动模式常用转速范围工作要求。In order to switch among multiple working modes of the concept hybrid engine, including air motor mode, supercharged combustion mode and regenerative braking mode, an electro-hydraulic variable valve system was designed and manufactured. Based on a newly designed prototype, the intake and exhaust valving strategies in different modes were analyzed. The on/off of hydraulic line was controlled with high speed electromagnetic valves. By using NI-CompactRIO platform, the control system hardware and software of valve prototype were designed and optimized. Finally, preliminary tests of the variable valve were conducted. The results indicate that, though there is some dynamic delay of valve lift, by regulating the opening and duration of electromagnetic valves, the optimal lift and timing strategy of the engine valve can be achieved for the air motor mode of the hybrid engine concept.

关 键 词：混合动力 气动发动机 电液可变气门 

分 类 号：U463.13[机械工程—车辆工程] TH122[交通运输工程—载运工具运用工程]