A large flow gas injection valve and method of use

By designing an upper intake and lower exhaust structure and a short-stroke electromagnetic component for a high-flow gas injection valve, the problems of short service life and inaccurate flow control of the gas injection valve are solved, achieving high-frequency response, good sealing, large flow, and long service life, which is suitable for gas engine injection systems.

CN122190950APending Publication Date: 2026-06-12GUIZHOU HONGLIN MACHINERY
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUIZHOU HONGLIN MACHINERY
Filing Date
2026-03-30
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

The existing gas injection valves have a service life of less than 600 million cycles, insufficient flow control accuracy, high gas consumption, and poor flow consistency, which can cause the vehicle to vibrate or stall when idling.

⚗Method used

A high-flow-rate gas injection valve was designed, adopting an upper intake and lower exhaust structure. It includes a valve seat, an armature assembly, a return spring, an electromagnetic assembly, a limit block, and a valve body. It adopts a hollow structure. The return spring, magnetic isolation pad, limit block, armature assembly, and valve seat are sequentially installed in the lower inner hole of the electromagnetic assembly. The armature assembly and the valve seat are pressed together to form an intake chamber and an exhaust chamber. Fluororubber products and metal limit platforms are used to improve sealing performance and service life. The electromagnetic assembly is designed with a short stroke to ensure high-frequency response.

🎯Benefits of technology

It achieves high-frequency response, good sealing, large flow rate, and long service life, ensuring the accuracy and stability of gas injection quantity, reducing the opening and closing time of the injection valve, and improving the reliability and consistency of the gas injection valve.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The application discloses a large-flow gas injection valve and a use method thereof. The valve comprises a filter screen assembly, an electromagnetic assembly, a sealing washer, a sealing ring, a reset spring, a magnetic isolation pad, a limiting block, an armature assembly, a valve seat, a valve body and a sealing ring. The valve is designed to have gas inlet on the top and gas outlet on the bottom. The armature assembly divides the valve into two gas chambers, forming two normally closed valves. When the electromagnetic assembly is not powered, the gas enters the gas inlet chamber through the filter screen assembly, and the armature assembly is tightly attached to the valve seat under the action of the reset spring, so that the gas inlet chamber is disconnected from the gas outlet chamber. When the electromagnetic assembly is powered, the gas enters the gas inlet chamber through the filter screen assembly, and the armature assembly moves upward under the electromagnetic action to overcome the spring force, so that the gas inlet chamber is connected to the gas outlet chamber. The valve has the characteristics of large flow, good sealing, light weight, long service life and rapid response time, and can be well matched with a certain engine gas injection system.
Need to check novelty before this filing date? Find Prior Art