某柴油机冷启动异响排查及优化方案
A diesel engine cold start abnormal noise troubleshooting and optimization scheme
董展翔 1张军 1杨树彬 1胡亮 1逄林林1
作者信息
- 1. 潍柴动力股份有限公司,山东 潍坊 261061;内燃机与动力系统全国重点实验室,山东 潍坊 261061
- 折叠
摘要
针对某机型柴油机出现的冷启动怠速异响问题,采用"主观评价—试验分析与仿真分析相结合—试验验证"的NVH分析方法,确定该机型柴油机冷启动异响问题是由于机油泵阻尼孔直径设计过大,导致机油泵泄压阀阀芯进入超调失稳振动状态,进而引起冷却系统零部件声振响应.对机油泵进行仿真分析并进行试验验证,结果表明适当调整阻尼孔尺寸可消除该机型柴油机的冷启动怠速异响问题.
Abstract
This article addresses the strange noise of cold start idle speed of a diesel engine of a certain model by applying the subjective assessment of the test and simulation analysis,the test validated the NVH analysis method of the Gong and determined that the cold start odd noise issue with the diesel engine on this model was caused by the oil pump dampening hole being too large in diameter,causing the oil pump pressure relief valve spool to easily enter an over-regulated unstable vibration condition,which in turn caused the cooling system components to vibrate.The oil pump was simulated and tested,and the proper adjustment of the damper bore size eliminates the cold start idling noise issue on the diesel engine.
关键词
柴油机/怠速/异响/机油泵/限压阀Key words
diesel/idle/abnormal sound/oil pump/pressure relief valve引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据