How to Solve the Problem of Loud Car Engine Noise?

[MacChloe]

Solutions for loud car engine noise: 1. Check whether the oil pump, cooling system, and exhaust pipe are cracked; 2. Adjust the valves, check the engine oil pressure, and inspect the muffler and exhaust pipe for damage; 3. It is recommended to replace the engine oil, oil filter, and clean the engine. The main measures to eliminate engine noise include: 1. Reduce the load of the compressor, increase the axial clearance between the rotor and stator, change the number of blades, remove the inlet guide vanes, and select an appropriate compressor speed; 2. Reduce the exhaust speed to decrease jet noise, such as increasing the flow ratio in turbofan engines to lower the exhaust speed; 3. Use corrugated and lobe-shaped nozzles to increase the contact area between the jet and external airflow, which can reduce jet mixing noise; 4. Apply sound-absorbing padding structures to the engine pipe walls.