增压器引起的车内哨声产生机理及控制研究
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摘要
针对搭载涡轮增压汽油机的某车型在急加速(tip-in)时车内产生的哨声异响进行了测试与分析,确定了异响是由增压器的同步噪声引起,因此根据同步噪声产生的原因对转子系统的动平衡进行优化,优化后同步噪声改善明显;但是,又出现了次同步噪声,同样在车内造成口哨声,然后对此次同步噪声的产生机理进行分析,并提出了一种在增压器浮动轴承内表面加槽的方案对次同步噪声进行控制,最后对改善方案进行了试验验证,试验表明采取上述措施后,车内口哨声消除。
In this paper, a vehicle with a turbocharged gasoline engine was measured and analyzed because of whistle noise inside the vehicle during a tip-in process. The test results show that the whistle noise inside vehicle is caused by synchronous noise due to unbalance of the rotor system and the synchronous noise disappears by controlling the unbalance of rotor. However, the sub-synchronous noise caused by oil film whirling during bearing clearance is obvious. Then the generating mechanism of sub-synchronous noise is researched so as to resolve the problem fundamentally. A scenario that installing circular oil grooves in the inner bearing wall is proposed to reduce sub-synchronous noise and the test result shows that interior whistle noise had disappeared.
In this paper, a vehicle with a turbocharged gasoline engine was measured and analyzed because of whistle noise inside the vehicle during a tip-in process. The test results show that the whistle noise inside vehicle is caused by synchronous noise due to unbalance of the rotor system and the synchronous noise disappears by controlling the unbalance of rotor. However, the sub-synchronous noise caused by oil film whirling during bearing clearance is obvious. Then the generating mechanism of sub-synchronous noise is researched so as to resolve the problem fundamentally. A scenario that installing circular oil grooves in the inner bearing wall is proposed to reduce sub-synchronous noise and the test result shows that interior whistle noise had disappeared.
引文
[1] Nguyen-Sch?fer H. Aero and vibroacoustics of automotive turbochargers[M]. Berlin Heidelberg: Springer, 2013
[2] Schweizer B. Total instability of turbocharger rotors-Physical explanation of the dynamic failure of rotors with full-floating ring bearings[J]. Journal of Sound and Vibration, 2009,328(1-2):156-190
[3] Kuma H, Inoue T, Isogai T, et al. Development of reduction method for whirl noise on turbocharger[R]. SAE Technical Paper 2007-01-4018, 2007
[4] Boyaci A, Hetzler H, Seemann W, et al. Analytical bifurcation analysis of a rotor supported by floating ring bearings[J]. Nonlinear Dynamics, 2009,57(4):497-507
[5] Tian L, Wang W J, Peng Z J. Dynamic behaviours of a full floating ring bearing supported turbocharger rotor with engine excitation[J]. Journal of Sound and Vibration, 2011,330(20):4851-4874
[6] R?mmal H, ?bom M. Acoustics of turbochargers[R]. SAE Technical Paper 2007-01-2205, 2007
[7] 杨景玲,李克俊,张东,等.发动机增压器异响产生机理及解决方法研究[J].内燃机工程,2014,35(6):101-105Yang J L, Li K J, Zhang D, et al. Research on turbocharger abnormal noise generation mechanism and resolution method[J]. Chinese Internal Combustion Engine Engineering, 2014,35(6):101-105 (in Chinese)
[8] Schweizer B. Oil whirl, oil whip and whirl/whip synchroniza-tion occurring in rotor systems with full-floating ring bearings[J]. Nonlinear Dynamics, 2009,57(4):509-532
[9] Gupta K, Vikram M R, Manta E. Study of turbocharger whistle noise and its reduction into passenger cabin[R]. SAE Technical Paper, 2015-26-0129, 2015.
[10] 朱磊. 考虑浮环支承的涡轮增压器转子系统动力学特性研究[D]. 合肥: 合肥工业大学, 2013Zhu L. Rotor dynamic characteristics of the turbocharger supported on full floating ring bearings[D]. Heifei: Hefei University of Technology, 2013 (in Chinese)
[11] 朱大鑫. 涡轮增压与涡轮增压器[M]. 北京: 机械工业出版社, 1998Zhu D X. Turbo and turbocharger[M]. Beijing: China Machine Press, 1998 (in Chinese)
[12] Nguyen-Sch?fer H. Rotordynamics of automotive turbochargers: linear and nonlinear rotordynamics-bearing design-rotor balancing[M]. Berlin Heidelberg: Springer, 2015
[13] Muszynska A. Rotordynamics[M]. Boca Raton: CRC, Taylor and Francis, 2005
[2] Schweizer B. Total instability of turbocharger rotors-Physical explanation of the dynamic failure of rotors with full-floating ring bearings[J]. Journal of Sound and Vibration, 2009,328(1-2):156-190
[3] Kuma H, Inoue T, Isogai T, et al. Development of reduction method for whirl noise on turbocharger[R]. SAE Technical Paper 2007-01-4018, 2007
[4] Boyaci A, Hetzler H, Seemann W, et al. Analytical bifurcation analysis of a rotor supported by floating ring bearings[J]. Nonlinear Dynamics, 2009,57(4):497-507
[5] Tian L, Wang W J, Peng Z J. Dynamic behaviours of a full floating ring bearing supported turbocharger rotor with engine excitation[J]. Journal of Sound and Vibration, 2011,330(20):4851-4874
[6] R?mmal H, ?bom M. Acoustics of turbochargers[R]. SAE Technical Paper 2007-01-2205, 2007
[7] 杨景玲,李克俊,张东,等.发动机增压器异响产生机理及解决方法研究[J].内燃机工程,2014,35(6):101-105Yang J L, Li K J, Zhang D, et al. Research on turbocharger abnormal noise generation mechanism and resolution method[J]. Chinese Internal Combustion Engine Engineering, 2014,35(6):101-105 (in Chinese)
[8] Schweizer B. Oil whirl, oil whip and whirl/whip synchroniza-tion occurring in rotor systems with full-floating ring bearings[J]. Nonlinear Dynamics, 2009,57(4):509-532
[9] Gupta K, Vikram M R, Manta E. Study of turbocharger whistle noise and its reduction into passenger cabin[R]. SAE Technical Paper, 2015-26-0129, 2015.
[10] 朱磊. 考虑浮环支承的涡轮增压器转子系统动力学特性研究[D]. 合肥: 合肥工业大学, 2013Zhu L. Rotor dynamic characteristics of the turbocharger supported on full floating ring bearings[D]. Heifei: Hefei University of Technology, 2013 (in Chinese)
[11] 朱大鑫. 涡轮增压与涡轮增压器[M]. 北京: 机械工业出版社, 1998Zhu D X. Turbo and turbocharger[M]. Beijing: China Machine Press, 1998 (in Chinese)
[12] Nguyen-Sch?fer H. Rotordynamics of automotive turbochargers: linear and nonlinear rotordynamics-bearing design-rotor balancing[M]. Berlin Heidelberg: Springer, 2015
[13] Muszynska A. Rotordynamics[M]. Boca Raton: CRC, Taylor and Francis, 2005