What Causes the Hissing Sound When a Car Goes Over Speed Bumps?
1 Answers
When a car goes over speed bumps and makes a hissing sound, it is the sound produced by the car's shock absorbers. Here is a detailed introduction to car shock absorbers: 1. Introduction: The most common type of shock absorber in household cars is the twin-tube shock absorber. What you see from the outside is the outer tube of the shock absorber, which contains an internal structure of pistons and piston tubes. The piston has valves, and the space between the piston and the piston tube, as well as between the piston and the outer tube, is filled with shock absorber oil. When the shock absorber is compressed, the piston squeezes the shock absorber oil, causing some of the oil to flow through the valves into the upper part of the piston, while another portion flows into the outer tube of the shock absorber. 2. Reason for the Sound: When the shock absorber rebounds, the piston moves upward, and the shock absorber oil in the outer tube flows back into the piston tube. At the same time, the oil in the upper part of the piston moves downward. The damping force is generated by the resistance of the shock absorber oil, which dissipates the impact force. Therefore, when the shock absorber is compressed or rebounds, the internal shock absorber oil flows rapidly, producing a 'puff' sound.
