一种新型双燃料喷射器设计与数值模拟  

Design and Numerical Simulation of a Novel Dual Fuel Injector

作　　者：肖民[1] 刘松岭 单航 黄志伟 XIAO Min;LIU Songling;SHAN Hang;HUANG Zhiwei(Energy and Power Engineering College,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,China)

机构地区：[1]江苏科技大学能源与动力工程学院,江苏镇江212003

出　　处：《船舶工程》2021年第6期71-78,共8页Ship Engineering

摘　　要：在现有共轨喷油器的基础上,提出一种适用于液态天然气(LNG)液喷的新型双燃料喷射器结构,并运用AMESim软件建立柴油和天然气喷射过程的计算模型,研究柴油压力、LNG压力、柱塞直径和控制腔进油孔孔径对针阀运动和喷油速率的影响规律,验证了设计方案的可行性,也为适用于LNG液喷的引燃柴油/天然气新型双燃料喷射器的设计提供理论依据。On the basis of the existing common-rail fuel injector,a new dual-fuel injector structure suitable for LNG liquid injection is proposed,and the calculation model of the diesel and natural gas injection process is established by using the AMESim software.The effects of diesel pressure,LNG pressure,the diameter of the plunger and the bore diameter of the control chamber on needle valve movement and injection rate are studied.The feasibility of the design scheme is verified,and it also provide a theoretical basis for the design of a new diesel/natural gas dual fuel injector suitable for LNG liquid injection.

关 键 词：双燃料喷射器 液态天然气 AMESIM软件 数值模拟 

分 类 号：U664.1[交通运输工程—船舶及航道工程] U464.136[交通运输工程—船舶与海洋工程]