第41卷(2019)第1期性能与排放
柴油机 Diesel Engine
Vol. 41 (2019) No. 1
涡轮增压柴油机仿真模型修正方法及试验比较研究
王智慧"，黄立勇”，雷文平”
（1.晋中学院机械学院，山西晋中030619：2.北京理工大学机械与车辆学院北京100081）
摘要：基于AVLBOOST仿真软件，针对一台4缸涡轮增压柴油机进行建模，在原仿真模型的基础上着重考虑了涡轮增压器传热效应的影响。计算结果与发动机试验数据的比较分析表明：经过修正的发动机仿真模型在保证发动机扭矩、功率等主要性能参数不变的基础上，计算得到的涡轮及压气机进出口温差与原模型相比误差大幅度减小：同时修正后的仿真模型与原模型相比，新鲜空气的质量流量、涡轮膨胀比、压气机压比均无明显变化，表明修正后的模型并无改变涡轮增压器的工作点位置，仅修正了由于传热所导致的压气机出口和涡轮进口的温度变化，以及涡轮增压器的效率变化。
关键词：涡轮增压柴油机；仿真模型：修正；传热中图分类号：TK427
文献标识码：A文章编号：1001-4357（2019)01-0007-05
The Comparison Between the Correction Method and the Experimental Results of the Simulation Model of a Turbocharging Diesel Engine
Wang Zhihui'.2,Huang Liyong, Lei Wenping
(1. School of Mechanical, Jinzhong University, Shanxi Jinzhong 030619;
2.School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081)
Abstract: Based on the simulation software of AVL BOOST , a four-cylinder turbocharging diesel engine simulation model was established , the effect of the turbocharger s heat transfer was considered in the si-mulation model. The calculation results were compared with experimental results , and showed that com-pared with the original model , the corrected model could substantially decrease the error of temperature difference between inlet and outlet of turbine and compressor , in the premise of keeping the main parame -ters including torque and power unchanged ; it also showed that the mass flow rate of engine fresh air and the pressure ratio of turbine and compressor was not change , which meant that the corrected modal didn't change the turbocharger operating positions , but only corrected the temperature change of the compressor outlet temperature and turbine inlet and the efficiency change of turbocharger caused by heat transfer Key words : turbocharging diesel engine ; simulation model ; correction; heat transfer
0引言
随着时代的发展，排放法规日益严苛，同时、燃油价格总体在上涨。涡轮增压器技术能有效降低排放及改善发动机的经济性，因此在发动机领域得
到了广泛应用1。随着计算机技术的发展，仿真技术越来越多地应用到发动机的开发过程中[2-3]
在构建涡轮增压发动机模型的过程中，往往使用厂家提供的涡轮增压器脉谱图。脉谱图主要包括压气机及涡轮在不同转速及质量流量下的压比（膨
收稿日期：2018-04-20；修回日期：2018-06-24
基金项目：晋中学院“1331工程”创客团队建设计划资助（jzxyektd2017001）
作者简介：王智慧（1986-），女，助教，博士研究生，主要研究方向为涡轮增压技术，wangzhihui001@126.com