摘要
为降低活塞-缸套摩擦损失和柴油机整机振动,以TBD620V16型柴油机为研究对象,考虑液动润滑及粗糙接触等因素,建立活塞组动力学模型及整机动力学模型,计算不同配缸间隙的摩擦损耗及整机振动响应。基于模型的活塞组动力学计算结果表明,活塞-缸套连接副的摩擦损失随配缸间隙的增加,先减小后略有增大,活塞敲击能量随配缸间隙的增加持续增大。基于模型的整机振动响应计算结果表明,整机振动幅值随配缸间隙的增加而持续增大,且活塞敲击对振动的中高频部分影响较大。综合考虑配缸间隙对柴油机摩擦及整机振动的影响发现,应在保证良好润滑的前提下选取最小的配缸间隙,以减小整机的振动响应。
In order to decrease the friction loss in piston-liner connection pair and the whole diesel engine vibration,TBD620V16 diesel engine is taken as the research object,the dynamic model of piston is set and the whole engine is established with considering the hydraulic lubrication and rough contact and other factors,then the friction loss of different cylinder clearance and the vibration response of the whole engine is calculated.The calculated results of the piston sets dynamic model show that the friction loss of piston-cylinder liner connection pair decreases first and then increases slightly with the increase of cylinder clearance,and the piston slapping energy continues to increase with the increase of the cylinder clearance.The calculation results of the vibration response model shows that the vibration amplitude of the whole engine increase continuously with the increase of cylinder clearance,and the piston slapping force has a great influence on the middle and high frequency part of the vibration.Considering the influence of cylinder clearance on friction and vibration of the whole engine,the minimum cylinder clearance should be selected under the premise of ensuring good lubrication to reduce the vibration of diesel engine.
作者
白泽方
孙思聪
杨建国
曹寅聪
BAI Zefang;SUN Sicong;YANG Jianguo;CAO Yincong(School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;Key Laboratory of Marine Power Engineering Technology Transportation Industry,Wuhan 430063,China)
出处
《船舶工程》
CSCD
北大核心
2023年第7期92-99,共8页
Ship Engineering
关键词
柴油机
配缸间隙
2阶运动
摩擦损耗
振动响应
diesel engine
cylinder clearance
second order motion
friction loss
vibration response
作者简介
白泽方(1997—),男,硕士研究生。研究方向:柴油机振动噪声控制;通信作者:孙思聪(1993—),男,博士研究生。研究方向:发动机振动与噪声控制。
