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论文类型：期刊论文

发表时间：2010-08-01

发表刊物：JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY

收录刊物：SCIE、EI

卷号：17

期号：4

页面范围：868-872

ISSN号：1005-9784

关键字：diesel engine; phase-divided spray mixing model; quasi-dimensional model; MATLAB/Simulink; prediction precision

摘要：In order to satisfy the demand of validity and real time operating performance of diesel engine model used in hardware-in-the-loop simulation system, a simplified quasi-dimensional model for diesel engine working process was proposed, which was based on the phase-divided spray mixing model. The software MATLAB/Simulink was utilized to simulate diesel engine performance parameters. The comparisons between calculated results and experimental data show that the relative error of power and brake specific fuel consumption is less than 2.8%, and the relative error of nitric oxide and soot emissions is less than 9.1%. At the same time, the average computational time for simulation of one working process with the new model is 36 s, which presents good real time operating performance of the model. The simulation results also indicate that the nozzle flow coefficient has great influence on the prediction precision of performance parameters in diesel engine simulation model.