基于燃烧状态反馈的柴油机低温冷起动逐循环控制研究  

Research on Cycle-by-Cycle Diesel Engine Control of Low Temperature Cold Start Based on Combustion State Feedback

作　　者：秦彪 王捧 马士宝 王国莹 石磊[1] 邓康耀[1] QIN Biao;WANG Peng;MA Shibao;WANG Guoying;SHI Lei;DENG Kangyao(Key Laboratory of Power Machinery and Engineering,Ministry of Education,Shanghai Jiaotong University,Shanghai 200240,China;Shanghai Marine Equipment Research Institute,Shanghai 200031,China;China North Engine Research Institute,Tianjin 300300,China)

机构地区：[1]上海交通大学动力机械及工程教育部重点实验室,上海200240 [2]上海船舶设备研究所,上海200031 [3]中国北方发动机研究所,天津300300

出　　处：《内燃机工程》2024年第2期26-33,共8页Chinese Internal Combustion Engine Engineering

摘　　要：为改善低温冷起动工况不良燃烧循环,利用CompactRIO控制器开发了燃烧状态反馈系统,实现了缸压采集和燃烧状态参数实时计算及反馈。设计试验探明了不同温度和转速下喷油时刻对CA50(缸内累积放热量达到50%时所对应的曲轴转角)的影响规律,提出了基于燃烧状态反馈的喷油时刻逐循环控制方法,实现了燃烧参数与控制参数的匹配。采用该控制方法后CA50更集中在高效燃烧区间,最高燃烧压力更高且不良燃烧循环得到改善,起动时间平均减少36%,有效改善了柴油机低温冷起动性能。In order to improve the poor combustion cycle of low-temperature cold starting conditions,a combustion status feedback system was developed by CompactRIO controller.The cylinder pressure acquisition and real-time calculation and feedback of combustion state parameters were achieved.The influences of injection timing on CA50(the crank angle corresponding to the cumulative heat release in the cylinder reaches 50%)at different temperatures and speeds were researched by experiments.The cycle-by-cycle control method of injection timing based on the feedback of combustion state was proposed,achieving the matching of combustion parameters and control parameters.After the control method was adopted,the CA50 was more concentrated in the efficient combustion zone,the maximum combustion pressure was higher and the bad combustion cycle was improved.And the starting time was reduced by 36%on average,which effectively improved the performance of low temperature cold starting of the diesel engine.

关 键 词：低温冷起动 逐循环控制 喷油时刻 柴油机 

分 类 号：TK427[动力工程及工程热物理—动力机械及工程]