基于多级闭环高压共轨柴油机怠速控制系统设计  

The Design of Idle Speed Control System for High Pressure Common Rail Diesel Engine Based on Multi-level Closed-loop

作　　者：时培燕 于正同 王超 SHI Peiyan;YU Zhengtong;WANG Chao(Xi’an Computing Technique Research Institute AVIC,Xi’an 710065,China)

机构地区：[1]中国航空工业集团公司西安航空计算技术研究所,陕西西安710065

出　　处：《现代车用动力》2020年第2期18-20,共3页Modern Vehicle Power

摘　　要：针对高压共轨柴油机怠速控制,设计了一种应用于怠速工况下的多级闭环转速控制系统。采用外环和内环相结合的控制策略,基于柴油机特性对传统比例-积分-微分(PID)控制算法进行了改进,并开展了数值仿真研究。结果表明,该控制策略提高了发动机怠速运转稳定性,控制算法具有较好的瞬态响应性和跟随性,满足怠速工况下高压共轨柴油机对转速控制系统的需求,该系统在高压共轨柴油机怠速控制领域具有良好的工程应用价值。A multi-level closed loop speed control system was designed by aiming at idle speed control of high pressure common rail diesel engine.The control strategy combining outer loop and inner loop was applied in the control system.Based on the characteristics of diesel engine,the traditional PID control algorithm was improved,and then the numerical simulation of the control system was carried out.The simulation results showed that the control strategy improved the engine idle operating stability,and the control algorithm had good transient response and following characteristics,which can meet the requirements of the speed control system of the high pressure common rail diesel engine under idle operating conditions.All the results show the control system has a good engineering application value in the idle speed control of high pressure common rail diesel engine.

关 键 词：高压共轨 怠速控制系统 多级闭环控制策略 外环 内环 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程] TP273[自动化与计算机技术—检测技术与自动化装置]