Numerical analysis and experimental studies on solenoid common rail diesel injector with worn control valve

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Krivtsov, S.N.^1 ; Yakimov, I.V.^1 ; Ozornin, S.P.^2

Irkutsk National Research Technical University, Lermontov St. 83, Irkutsk

664074, Russia^1

Transbaikal State University, Aleksandro-zavodskaya St 30, Chita

672039, Russia^2

关键词: Common rail injector;    Diesel injectors;    Experimental methods;    Injection rates;    Injector parameters;    Regression model;    Technical conditions;    Wear simulation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/4/042057/pdf
DOI  :  10.1088/1757-899X/327/4/042057

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

A mathematical model of a solenoid common rail fuel injector was developed. Its difference from existing models is control valve wear simulation. A common rail injector of 0445110376 Series (Cummins ISf 2.8 Diesel engine) produced by Bosch Company was used as a research object. Injector parameters (fuel delivery and back leakage) were determined by calculation and experimental methods. GT-Suite model average R2is 0.93 which means that it predicts the injection rate shape very accurately (nominal and marginal technical conditions of an injector). Numerical analysis and experimental studies showed that control valve wear increases back leakage and fuel delivery (especially at 160 MPa). The regression models for determining fuel delivery and back leakage effects on fuel pressure and energizing time were developed (for nominal and marginal technical conditions).