车用柴油机高压比宽流量增压器研制
Development of High Pressure Ratio Wide Flow Turbocharger for Vehicle Diesel Engine
邢卫东 1佟鼎 1刘莹 2邓春龙 1门日秀 3吴新涛1
作者信息
- 1. 中国北方发动机研究所 柴油机高增压国防科技重点实验室,天津 300400
- 2. 康跃科技(山东)股份有限公司,山东 潍坊 262718
- 3. 中国北方发动机研究所 柴油机高增压国防科技重点实验室,天津 300400;天津大学 力学系,天津 300354
- 折叠
摘要
目的 对于单级高压比宽流量增压器,为适应发动机强化指标,进行一系列的改进设计.方法 利用仿真设计与试验相结合的方法,对高海拔环境应用增压器进行改进设计.通过理论推导,确定压气机及涡轮的气动性能优化设计方法,开展高稳定裕度转子轴承系统设计方法研究与验证.结果 匹配高压比宽流量增压器的发动机与原机相比,高原功率恢复了17%,发动机排气温度降低了7%,增压器转速降低了13%.结论 在原机的基础上设计了压比为 4.6 的宽流量高性能涡轮增压器,成功实现了高压比宽流量增压器的设计,满足了发动机平原、高原不同环境的运行需求.
Abstract
The work aims to improve the design of the single stage high pressure ratio wide flow turbocharger,making it adapt to the engine strengthening index.The simulation design and experiment were combined to improve the design of the tur-bocharger for high altitude environment.Through theoretical derivation,the optimal design method of aerodynamic performance of the compressor and turbine was determined.The design method of the rotor bearing system with high stability margin was studied and verified.Compared with the original engine,the engine with high press ratio wide flow turbocharger restored the high altitude power by 17%,reduced the engine exhaust temperature by 7%,and reduced the turbocharger speed by 13%.A wide flow turbocharger with a pressure ratio of 4.6 is designed on the basis of the original engine,and the design of the high pressure ratio wide flow turbocharger is successfully realized,which can meet the operation requirements of the engine in plain and plateau.
关键词
高压比/增压器/压气机/涡轮/转子/高海拔环境Key words
high pressure ratio/turbocharger/compressor/turbine/rotor/high altitude environment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据