Henan guanbo shock absorber co., LTD. : working principle of two-way cylinder shock absorber
In the compression travel, refers to the car wheels move close to the body, shock absorber by compression, this time the shock absorber piston downward movement. As the volume of the lower chamber of the piston decreases and the oil pressure increases, the oil flows through the flow valve to the upper chamber (upper chamber) above the piston. The upper cavity is occupied by the piston rod part of the space, so the increased volume of the upper cavity is smaller than the reduced volume of the lower cavity, part of the oil then pushed away the compression valve, flow back to the storage cylinder. The oil savings of these valves form the damping force of the suspension under compression motion. The shock absorbers stretch as the wheels move away from the car, stretching the shock absorbers. Then the shock absorber piston moves up. The oil pressure in the upper chamber of the piston rises, the flow valve closes, and the oil in the upper chamber pushes the stretching valve and flows into the lower chamber. Due to the existence of piston rod, the oil flowing from the upper cavity is not enough to fill the increased volume of the lower cavity, which mainly makes the lower cavity produce a vacuum degree. At this time, the oil in the storage cylinder pushes the compensation valve 7 and flows into the lower cavity for supplement. The throttle action of these valves plays a damping role in stretching the suspension.
Since the stiffness and pretension of the spring of the stretching valve are larger than that of the compression valve, under the same pressure, the sum of the loading area of the stretching valve and the corresponding normal slot channel is smaller than the sum of the sectional area of the compression valve and the corresponding normal slot channel. This makes the damping force produced by the stretching stroke of the shock absorber is greater than that of the compression stroke, thus achieving the requirement of rapid damping.
This paper is organized by henan guanbo shock absorber co., LTD