内燃机工程2017，Vol.38Issue(2)：114-117,4.DOI:10.13949/j.cnki.nrjgc.2017.02.020
高压共轨柴油机共轨压力阶跃响应控制策略研究
The Study of Rail Pressure Step Response Control Strategy for Common Rail Diesel Engine
摘要
Abstract
Based on the self-developed high pressure common rail diesel engine electronic control unit(ECU) and the rail pressure control model, the setting value control strategy for the target rail pressure step response of the engine under dynamic conditions was studied.The changes and trends of the target rail pressure obtained by the ECU MAP query were tracked and controlled by introducing the change rate of rail pressure and the gradient.When the target rail pressure value had a step response, a control method of gradually increasing step size and multistep approach to the target rail pressure value was adopted instead of directly using the ECU MAP query value as target control value, which was verified on the engine test bench.Test results show that the method can effectively filter out the mutation of target value caused by jitter or external disturbance, reduce the control of rail pressure beyond the adjustment and speed up the stability of the target rail pressure value, which will improve the fast response and stability of rail pressure control of the engine under dynamic conditions.关键词
内燃机/共轨柴油机/轨压控制/阶跃响应/控制策略Key words
IC engine/common rail diesel engine/rail pressure control/step response/control strategy分类
能源科技引用本文复制引用
王洪荣,邓鹏毅,张衡..高压共轨柴油机共轨压力阶跃响应控制策略研究[J].内燃机工程,2017,38(2):114-117,4.基金项目
国家"八六三"高技术研究发展计划项目(2012AA111708) （2012AA111708）
重庆市应用开发计划重点项目(cstc2013yykfB0088) （cstc2013yykfB0088）
西华大学汽车工程四川省高校重点实验室开放基金项目(szjj2015-050) （szjj2015-050）
