内燃机工程2018，Vol.39Issue(2)：81-86,6.DOI:10.13949/j.cnki.nrjgc.2018.02.013
船用中速柴油机性能的优化研究
Research on Performance Improvement of a Marine Medium Speed Diesel Engine
摘要
Abstract
In order to improve the economy and emissions of the 4190ZLC-2 marine medium speed diesel engine after the electronically controlled reform of the fuel injection system,a multi parameter optimization test was carried out for the fuel injection system.Using the most economical matching parameters obtained by experimental method,the high pressure working process of the engine was simulated by the AVL FIRE software.By the analyses of the 3D flow fields in the combustion chamber,a scheme to further improve the fuel injection pressure and modify the shape of the combustion chamber was put forward and then a better combustion chamber matching scheme was obtained by simulation.Results show increasing the fuel injection pressure can improve the overall performance of the engine.In order to adapt to the increase in fuel injection pressure,the depth and opening diameter of the combustion chamber should be decreased and increased respectively,but the shallow combustion chamber can lead to incomplete combustion,resulting in an increase in fuel consumption.This study can provide a theoretical basis for the improvement of diesel combustion system.关键词
柴油机/性能/喷油压力/燃烧室形态/仿真Key words
diesel engine/performance/fuel injection pressure/shape of combustion chamber/simulation分类
能源科技引用本文复制引用
杨城,陈丹,朱钰..船用中速柴油机性能的优化研究[J].内燃机工程,2018,39(2):81-86,6.基金项目
福建省自然科学基金(2017J01486,2016J01251) （2017J01486,2016J01251）
福建省科技厅项目(JK2013025)Natural Science Foundation of Fujian Province of China(2017J01486,2016J01251) （JK2013025）
Department of Science and Technology Project of Fujian Province of China (JK2013025) （JK2013025）
