| Several classification of three - way machine
Tee machine is mainly the production of three machines, whether carbon steel, alloy steel, stainless steel materials of our company's machine can be produced.The production of three-way three-way machine generally we are divided into three kinds, hot drawing three-way machine, hot pressing three-way machine, cold extrusion three-way machine.The main feature of hot drawing tee machine is low cost, but the outlet is not high enough.A section of steel pipe needs to be welded.This process of hot pressing tee machine is mainly to produce tee with larger wall thickness than SCH80.That's the tee that makes the XS.Cold extrusion tee machine is also the most common way to make tee.Now the size of the production tee is 1/2 (21mm) -24(630), the wall thickness is SCH10-SCH80, he is characterized by high efficiency, low rate of defective products, reasonable price, in the production process is generally a molding.If you need a three-way machine can be introduced according to the above three kinds of three-way machine to choose a three-way machine
Three - way machine each brake wheel pump has a three - way solenoid valve, three - way solenoid valve has three functions of pressure boost, pressure holding and decompression.Pressure boost process: there is no current flow in the solenoid coil, and the solenoid valve is in the position of pressure boost. At this moment, the main brake pump meets the wheel pump, and the brake fluid from the main brake pump directly flows into the wheel pump. The pressure of the wheel pump varies with the pressure of the total pump.Pressure holding process: when ABS ECU to the solenoid coil into a small adhere to the current (about half of the maximum current), the solenoid valve in the adhere to the pressure position, all channels are cut off.At the moment, the main pump wheel pump and the oil return space are blocked from each other and sealed, so that the brake wheel pump insists on a certain brake pressure.Decompressor process: when ABS ECU to the solenoid coil through a maximum current value, the piston moved to the upper end, the main cylinder and cylinder access is cut off, the solenoid valve is in the position of decompressor, the solenoid valve will wheel pump and oil return channel is connected at the moment, the brake fluid in the wheel pump through the solenoid valve, so that the wheel pump brake pressure quickly reduced.At the same time, the drive motor starts, the hydraulic pump begins to work, the brake hydraulic flow back to the hydraulic tank after conveying to the master cylinder, ready for the next brake cycle.Three - way machine three - way solenoid valve is divided into three processes of pressure boost process, pressure holding process and decompression process.
3001-3004.
|
