Executive device of electronic control valve

Abstract

The invention discloses an executive device of an electronic control valve. The device comprises an upper valve body seat and a lower valve body seat which are fixed together; the upper valve body seat is internally provided with a high-speed electromagnetic valve; the flow inlet of the high-speed electromagnetic valve is communicated with a control flow inlet on the upper valve body seat; a reflux inlet is communicated with a control fluid leakage channel; the upper valve body seat is internally provided with a plunger piston sleeve and a plunger piston; the plunger piston is provided with apressure relief channel; the control opening of the high-speed electromagnetic valve is communicated with the pressure relief channel; a coupling piece limit disc is arranged between the plunger piston sleeve and the lower valve body seat; the middle part of the coupling piece limit disc is provided with a through hole; the plunger piston props against a valve lever at the lower part after passing through the through hole; and the coupling piece limit disc is provided with a pressure relief annular groove and a communicating groove, thus providing channels for a pressure relief fluid. The device provided by the invention has the advantages of compact structure and light weight of moving components; high-speed dynamic characteristics can be obtained, the starting lift is accurate, seat buffer is provided when the valve returns, and the executive device is widely used in the switch control of air intake and air exhaust of an internal combustion engine or fluids in an air fuel injection system.

Description

technical field [0001] The invention relates to the technical field of electronically controlled valves, in particular to an actuator for electronically controlled valves applied to intake, exhaust or gas fuel injection systems of internal combustion engines. Background technique [0002] It is of high industrial value to realize the precise opening and closing of valves by electronically driving and controlling hydraulic or pneumatic circuits. For example, valves applied to intake, exhaust, and fuel injection systems of internal combustion engines can obtain flexible valve timing and flow control. . [0003] The internal combustion engine gas fuel injection device and its control device announced in Chinese invention patent ZL200810139346.4 better solve the fuel injection control of large gas fuel engines, and use the accumulated pressure hydraulic source to act on the oil inlet of the two-position three-way high-speed solenoid valve , to form action energy, a hydraulic pl...

AI Technical Summary

Problems solved by technology

[0004] However, the application of the above invention will be limited in terms of valves requiring more accurate opening lift and higher action response speed.

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