Exhaust system refers to the system that collects and discharges exhaust gas, including exhaust manifold, exhaust pipe, muffler pipe, tail pipe and resonator.

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Intake system noise is one of the main noise sources of automobiles, and it is of great significance to control and optimize it. The intake noise is caused by the pressure fluctuations caused by the periodic opening and closing of the intake valve and the high-speed airflow flowing through the intake valve passage during the intake process.

The car can drive on the road because of the rotation of the wheels. What should I do when the car is about to stop? It is impossible for the driver to put his feet on the ground to stop the car from moving forward like in the cartoon.