Order-Tracking and Its Application to the Analysis of Engine Exhaust Unsteady Noise
Exhaust noise of vehicles at speed-up state is strongly unsteady.When analyzing the noise with traditional spectrum analysis,the "frequency smear" can hardly be avoided.In order to understand the acceleration noise properties and engine speed's influence exactly,an effective method,which is order tracking,is utilized to analyze the exhaust noise of a fourstroke engine.Further,the main order components and main sources of acceleration exhaust noise are analyzed,the relationship between exhaust noise' sound pressure level and engine rotation speed is revealed.Such analysis results will provide some preference and essential reference for exhaust muffler design and optimization.
Exhaust NoiseAcceleration NoiseOrder TrackingNoise Measurement and Analysis
NETL
NSTL
万方数据
维普
