How to Solve the Engine Noise Issue in Baojun 510?

[DeGenevieve]

Here are specific methods to eliminate engine noise in Baojun 510: 1. Reduce compressor stage load, increase axial clearance between rotor and stator, change blade count, remove inlet guide vanes, and select appropriate compressor speed to lower compressor noise. 2. Decrease exhaust velocity to reduce jet noise, such as increasing bypass ratio in turbofan engines to lower exhaust speed. 3. Use corrugated and lobed nozzles to increase contact area between jet flow and external airflow, thereby reducing jet mixing noise. 4. Apply sound-absorbing liner structures on engine pipe walls. In aero-engine noise research, noise can be viewed as composed of monopole, dipole, and quadrupole noise sources. Monopole noise, caused by mass fluctuations and structural vibrations, commonly occurs in engine intakes and exhaust nozzles, predominantly at low frequencies.