车用汽油发动机机械损失功率检测仿真研究  

Simulation Research on Mechanical Loss Power Detection of Vehicle Gasoline Engine

作　　者：刘国兵 赵又群[2] 杨雪梅 羊玢 LIU Guo-bing;ZHAO You-qun;YANG Xue-mei;YANG Bin(School of Automotive&Rail Transit,Nanjing Institute of Technology,Nanjing Jiangsu 211167,China;College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing Jiangsu 210016,China)

机构地区：[1]南京工程学院汽车与轨道交通学院,江苏南京211167 [2]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《计算机仿真》2023年第10期157-161,共5页Computer Simulation

基　　金：江苏省科技项目(BK20201470)。

摘　　要：针对车用汽油发动机机械损失功率检测中实际情况与理想情况存在误差的问题,提出车用汽油发动机机械损失功率检测仿真研究。采用数据转换算法将车用汽油发动机不同传感器采集的数据转换为可用物理信号,根据物理信号构建车用汽油发动机示功图;结合最大压力值和热力损失角优化示功图上止点误差,再将示功图光滑处理并消除其中可疑数据;根据优化后示功图信息,完成车用汽油发动机机械损失功率检测。实验结果表明,所提方法能够有效降低机械损失功率检测偏差。Due to the error between the actual situation and the ideal situation during the detection of mechanical power loss of automotive gasoline engine,this paper proposed a simulation on the detection of mechanical loss power of automotive gasoline engine.Firstly,the data conversion algorithm was used to convert the data collected by different sensors in the gasoline engine into functional physical signals.On this basis,a dynamometer diagram of the gasoline engine was constructed.Combined with the maximum pressure and the thermal loss angle,the top dead center error of the dynamometer diagram was optimized.And then,the dynamometer diagram was smoothed to eliminate suspicious data.According to the optimized dynamometer,the mechanical loss power detection of the vehicle gasoline engine was completed.Experimental results show that the proposed method can effectively reduce the detection deviation of mechanical loss power.

关 键 词：车用汽油发动机 机械损失功率 数据转换 示功图 上止点 

分 类 号：TP183[自动化与计算机技术—控制理论与控制工程]