Detailed explanation of function and structure principle of automobile electric butterfly valve
In the automotive suspension, the electric butterfly valve is always used together with the butterfly valve. When we press down a corner of the body, the practice is to tighten the butterfly valve and swing the corresponding arm. When the vehicle is loosened, the body will rebound under the force of the butterfly valve. At this time, the electric butterfly valve plays a damping role in the rebound of the butterfly valve, that is, it tends to be stable after the rebound. If there is no electric butterfly valve, the butterfly valve will be tightened and rebounded again after rebounding, which shows that the body tends to stabilize after rebounding repeatedly. Therefore, the electric butterfly valve serves as a damping valve for the butterfly valve of the automobile suspension when rebounding.
The hydraulic electric butterfly valve for automobiles is filled with special oil for electric butterfly valve. The internal part is composed of two cylinders: the storage cylinder and the working cylinder. The piston divides the working cylinder into upper chamber and lower chamber. A stretching valve and a flow valve are arranged on the piston to control the movement of oil between the upper cavity and the lower cavity; The tightening valve and compensation valve between the lower chamber of the working cylinder and the oil storage cylinder are used for the movement of oil between the lower chamber and the oil storage cylinder.
When the electric butterfly valve is tightened, the piston goes down, the volume of the upper chamber increases, and the volume of the lower chamber decreases, the flow valve opens, and the oil in the lower chamber enters the upper chamber through the flow valve; At the same time, a part of the oil flows into the oil storage cylinder by turning over the tightening valve. The throttling effect of these two valves on the oil makes the electric butterfly valve have a damping effect when contracting.
When the electric butterfly valve is extended, the piston goes up, the volume of the upper chamber decreases and the volume of the lower chamber increases, the stretching valve opens, and the oil in the upper chamber enters the lower chamber through the stretching valve; At the same time, a part of the oil turns over for compensation and enters the lower chamber from the oil storage cylinder. The throttling effect of these two valves on the oil makes the electric butterfly valve have a damping effect when it stretches.
Since the tension valve butterfly valve force is greater than the flow valve, and the flow area of the valve hole of the tension valve is smaller than the flow valve, this makes the damping force generated by the stretch stroke of the electric butterfly valve greater than the damping force generated by the contraction stroke, reaching the request for rapid reduction of butterfly valve vibration.