基于等效等熵指数的燃烧始点实时反馈与控制  

Real-time start of combustion feedback and control based on equivalent isentropic index

作　　者：王秀雷 方成 李国祥[1] WANG Xiu-lei;FANG Cheng;LI Guo-xiang(School of Energy and Power,Shangdong Universityy Jinan 250061,China;KCFP Research Center,Lurid University,Lund 22100,Sweden;Changzhou ECTEK Automotive Electronics System Co.,Ltd.,Changzhou 213164,China)

机构地区：[1]山东大学能源与动力学院,济南250061 [2]隆德大学KCFP研究中心,隆德22100,瑞典 [3]常州易控汽车电子股份有限公司,江苏常州213164

出　　处：《吉林大学学报（工学版）》2020年第4期1160-1168,共9页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家重点研发计划项目(2016YFD0700804)。

摘　　要：针对压燃发动机燃烧相位的循环波动问题,开发了新一代集成缸压采集、燃烧状态反馈、燃烧控制和发动机控制功能的控制平台;提出了一种基于等效等熵指数一阶导数的燃烧始点检测算法;设计了循环内燃烧始点控制算法和循环间的燃烧始点控制算法。实验结果表明,基于等效等熵指数一阶导数的燃烧始点检测算法,能够实时检测燃烧始点;根据燃烧放热率规律提出的循环间燃烧始点控制算法,能够控制燃烧始点到目标值,减小燃烧始点相位的循环波动;提出的循环内燃烧始点控制算法,能够保持不同EGR率下主喷燃烧始点相位的一致。In order to reduce cycle-to-cycle combustion phase fluctuations,a new control platform with functions of cylinder pressure acquisition,combustion states feedback,combustion control and engine control is developed. A novel Start of Combustion(SOC)detection algorithm based on the first derivative of the equivalent isentropic index is presented. Both next-cycle and in-cycle SOC control strategies are introduced. Experimental results demonstrate that the detection method is able to detect the real-time SOCs. The next-cycle control strategy according to the profiles of the heat release rate can control the SOC phase to its target and reduce cycle-to-cycle SOC phase fluctuations. The in-cycle control strategy can keep the consistency of the SOC phase of the main injection under different exhaust gas recirculation rates.

关 键 词：动力机械工程 燃烧始点 等效等熵指数 实时 燃烧控制 

分 类 号：TK421.2[动力工程及工程热物理—动力机械及工程]