| 摘要:为实时准确地观测电控喷油器的喷油量，实现喷油过程的闭环控制，针对某船用柴油机蓄压式电控喷油器结构特征，根据其燃油流动过程和蓄压腔压力变化规律，利用理论机理计算与神经网络修正相结合的方法，建立了电控喷油器计量特性数字孪生模型。通过建立快速原型样机进行在线试验验证，对比喷油器计量特性数字孪生模型观测值与平台实测值。试验结果表明:当电控喷油器每循环喷油量大于1 000 mm3时，喷油量计算误差在3%以内；当每循环喷油量小于1 000 mm3时，喷油量计算误差在10%以内。 |
| 关键词: 船舶柴油机 电控喷油器 计量特性 数字孪生模型 快速原型样机 |
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| Research on the Digital Twin Model of Metrological Characteristics ofAccumulator Type Electronic Fuel Injectors for Marine Diesel Engines |
| Yang Boyao,Jin Jiangshan,Qin Ciwei,Dong Xiaolu,Xia Chunxiang |
| Shanghai Marine Diesel Engine Research Institute, Shanghai 201108;National Engineering Laboratory for Marine and Ocean Engineering Power System, Shanghai 201108 |
| Abstract:In order to observe the injection quantity of electronic controlled injector accurately in real time, and realize the closed-loop control of injection process, a digital twin model of metrological characteristics of electronic controlled injector was established based on the structural characteristics of a marine diesel engine accumulator electronically controlled injector. According to the fuel flow process and the pressure change law of the accumulator chamber, the establishment of the model was realized by combining theoretical calculation with neural network correction. Through the establishment of a rapid prototype for on-line test verification, the digital twin model observation values and the platform measured values were compared. The test results show that when the fuel injection volume per cycle of the electronic control injector is larger than 1 000 m3, the calculation error of the fuel injection quantity is within 3%; when the fuel injection volume per cycle is less than 1 000 m3, the calculation error of the fuel injection quantity is within 10%. |
| Key words: marine diesel engine electronic fuel injector metrological characteristic digital twin model rapid prototype |
