摘要
为改善某8缸船用柴油机全工况性能,设计了带有定压排气管的3增压器相继增压系统,利用GTPOWER对相继增压发动机进行了控制策略分析。结果表明:设计的方案可以使发动机50%以下转速工况,比油耗降低8.1~13.4 g/kW·h,最大扭矩可以提升80.0%~113.4%。;在发动机60%~70%转速工况下,比油耗降低2.0~5.4 g/kW·h,最大扭矩可以提升8.4%-30.0%;通过发动机定压排气管的设计代替脉冲排气管,可以使发动机高工况下性能也有所改善,为相继增压系统改善发动机全工况性能提供一种新的思路。
In order to improve the performance of an 8-cylinder marine diesel engine under full operating conditions,a 3-turbocharger sequential turbocharging system(STS)with a constant pressure exhaust pipe was designed.The control strategy analysis of the STS engine were carried out by GT-POWER.The results show that the designed system can reduce the specific fuel consumption by 8.1~13.4 g/kw.h and increase the maximum torque by 80.0%~113.4%under the engine condition with rotating speed below 50%.Under 60%~70%engine speed conditions,the specific fuel consumption is reduced by 2.0~5.4 g/kw.h,and the maximum torque can be increased by 8.4%~30.0%.By using the constant pressure exhaust pipe,the performance of the engine can be improved under high working conditions.The designed system provides a new idea for improving the full condition performance of the engine.
作者
马超
李成
李文娇
王焱
MA Chao;LI Cheng;LI Wen-jiao;WANG Yan(Marine Engineering College,Dalian Maritime University,Dalian 116026,China;Marine and Electric Power Division,Guangxi Yuchai Machinery Co.,Ltd.,Yulin 537005,China;School of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China;Aeolus Turbocharging Technology Co.Ltd.,Dalian 116028,China)
出处
《舰船科学技术》
北大核心
2020年第5期159-165,共7页
Ship Science and Technology
基金
中央高校基本科研业务费专项资金资助项目(3132019330)。
关键词
相继增压
船用柴油机
外特性
性能提升
sequential turbocharging system
marine diesel engine
external characteristic conditions
performance improvement
