重型天然气发动机氧传感器控制系统研究
Research on Oxygen Sensor Control System for Heavy-duty Natural Gas Engine
曲业源 1刘果 2韩雨 2赵进超 2陈彦波2
作者信息
- 1. 潍坊潍柴动力股份有限公司,山东 潍坊 261001;潍柴西港新能源动力有限公司,山东 潍坊 261001
- 2. 潍坊潍柴动力股份有限公司,山东 潍坊 261001
- 折叠
摘要
为了提升重型天然气发动机空燃比控制精度,本文基于模型控制方法,从氧传感器的工作原理出发,构建了基于氧传感器的自适应空燃比测量及控制系统模型,通过自适应控制及瞬态补偿策略,实现全工况空燃比精确闭环控制,λ控制精度提升 20%,实现更佳的排放控制水平,在 WHTC循环排放测试中,主要排放污染物均实现明显降低,NOx降低 23%,CH4 排放降低 40%.
Abstract
In order to improve the accuracy of the air-fuel ratio of the heavy-duty natural gas engine,based on the model control method the principal of oxygen sensor,this paper is constructed a control system model and a measurement of an adaptive air-fuel ratio.Through adaptive control and transient compensation strategy,the en-gine can realize an accurate closed-loop control of air-fuel ratio in all working condition.In the WHTC cycle e-mission test,if the accuracy ofλincreased 20%,NOx is reduced 23%,CH4 is reduced 40%.The main emission pollutants are significant reduced.The emission of the engine can achieve a higher level.
关键词
天然气发动机/氧传感器/闭环控制Key words
Natural-gas engine/Oxygen sensor/Closed-loop control引用本文复制引用
出版年
2024
NETL
NSTL
万方数据