Built-in electromagnetic valve of oil injector and oil injector

By setting a channel for balancing pressure in the built-in solenoid valve of the fuel injector and implementing the design of medium circulation, the problems of unstable movement of the solenoid valve and performance attenuation in high temperature environments are solved, and the stability and service life are improved.

CN119712374AActive Publication Date: 2025-03-28THE 711TH RES INST OF CHINA STATE SHIPBUILDING CORP
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Patent Information

Application Number
CN202411853653.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-03-28
Estimated Expiration
2044-12-13

AI Technical Summary

Technical Problem

The existing injector solenoid valves are susceptible to resistance during operation, resulting in unstable movement, and severely attenuated performance characteristics and life in high-temperature fuel environments.

Method used

A built-in solenoid valve of the fuel injector is designed. By setting a first connection channel and a second connection channel on both sides of the movable space between the solenoid and the armature, and communicating with the low-pressure flow path of the injector body, it balances the up and down pressure during the armature movement, and at the same time realizes the circulation between the inner and external media of the solenoid and promotes heat dissipation.

Benefits of technology

It improves the movement stability of the solenoid valve, and extends the service life of the solenoid valve through effective heat dissipation and improves operating reliability.

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Abstract

The invention provides an oil injector built-in electromagnetic valve and an oil injector. The oil injector built-in electromagnetic valve comprises an electromagnet and an armature, and the electromagnet is embedded in a containing cavity of an oil injector body; the armature is arranged below the electromagnet, and a movable space is formed between the electromagnet and the armature; wherein the electromagnet is provided with a first connecting channel communicated with the movable space, one side of the armature is provided with a second connecting channel communicated with the movable space, and the first connecting channel and the second connecting channel are respectively communicated with a communicating hole of a low-pressure flow path of the oil sprayer body. According to the built-in electromagnetic valve of the oil sprayer, the first connecting channel and the second connecting channel are arranged on the two sides of the moving space between the electromagnet and the armature correspondingly, so that the pressure on the upper side and the lower side of the armature in the operation process can be balanced, the armature is always in the same pressure in the moving process, and the stability of the moving process is enhanced.
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