CN2911223Y - Plate-type gas pulse jetting electromagnetic valve - Google Patents

Abstract

A plate-type gas pulse injection electromagnetic valve for automobiles, which is connected in sequence by a valve body, an air inlet, a filter screen, an electromagnet, a coil, a copper core, and a spring, and the coil is electrically connected with a plug and injected on the valve body to form a socket. The feature is that the valve body is equipped with a gasket, a spacer, and an annular valve seat, and a plate valve plate with a vent hole is installed in the spacer, and an O-shaped rubber ring is used to seal the air outlet under the annular valve seat. Due to the use of plate valve plate, spacer, gasket, and ring-shaped valve seat structure, it can ensure the precise injection of gas fuel under high pressure and high flow conditions under various operating conditions. The plate valve plate and the annular valve seat have a simple structure, low requirements for machining precision, and low manufacturing cost.

Description

Plate gas pulse injection solenoid valve

Technical field

The utility model relates to a large-flow injection device for injecting combustion gas fuel of an internal combustion engine, in particular to a plate-type gas pulse injection electromagnetic valve controlled by a microcomputer.

Background technique

At present, the injection solenoid valve for internal combustion engine gas is composed of a valve body, an air inlet, a filter screen, an electromagnet, a coil, a spring, a needle valve, a needle valve seat, a mechanical connection of an air outlet, and an electrical connection between a coil and a plug. When the pulse current is passed through, the magnet generates a magnetic field under the action of the coil, which attracts the needle valve and leaves the needle valve seat, and the gas fuel input from the air inlet passes through the gap between the needle valve and the needle valve seat and is ejected from the gas outlet. However, the inertia of the needle valve is large, and the passage of the needle valve seat is small, which cannot meet the requirements of gas fuel, high pressure, large flow, high sensitivity and precise injection. Moreover, the manufacturing precision is high, and it is not easy to process.

Contents of Invention

The purpose of this utility model is to replace the needle valve and the needle valve seat with a plate type valve plate and ring type valve seat, a plate type gas pulse injection solenoid valve with high pressure, large flow rate and high sensitivity.

The purpose of this utility model is achieved in that:

This plate-type gas pulse injection solenoid valve is composed of a valve body, an electromagnet, a filter screen in the air inlet on the upper end of the electromagnet, a copper core installed on the lower side of the filter screen, and a spring. The coil on the electromagnet is electrically connected to the plug and injected together. An electrical connection socket is formed on the valve body, which is characterized in that a gasket is installed on the lower side of the valve body, a spacer is installed on the lower end of the gasket, and a ring-shaped valve seat is connected to the lower end of the spacer, and a device is installed in the spacer. There is a plate valve plate with a vent hole, and the lower side of the annular valve seat is sealed and connected with the air outlet with an O-shaped rubber ring.

When the plug is connected with a pulse current, the coil generates a magnetic force on the electromagnet, and the plate valve is sucked up from the annular valve seat in the spacer against the spring pressure, and the gas fuel passes through the copper core in the magnet through the air inlet. From the air hole provided on the plate valve plate, through the air channel in the middle of the annular valve seat, it is sprayed from the air outlet.

Due to the light weight of the plate valve plate and the large diameter of the annular valve seat, high pressure, large flow and high sensitivity injection can be realized.

Due to the above structure, when the internal combustion engine uses gaseous fuel, it can maintain high sensitivity under any working conditions and accurately inject large flow. The plate valve plate and the annular valve seat have a simple structure, low machining accuracy requirements, and low manufacturing cost.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Accompanying drawing is the sectional structure figure of the utility model.

In the figure: 1 valve body, 2 air inlet, 3 filter screen, 4 electromagnet, 5 coil, 6 copper core, 7 spring, 8 gasket, 9 plate valve, 10 spacer, 11 annular valve seat, 12O type Apron, 13 plugs, 14 sockets, 15 air outlets.

Detailed ways

With reference to accompanying drawing, electromagnet 4 is housed in the valve body 1, and coil 5 is housed on the electromagnet 4, and the wiring plug 13 on the coil 5 is injected into wiring socket 14 together with valve body. The coil 5 is electrically connected to the plug 13 .

The electromagnet 4 is machined from a magnetically conductive material, with a through hole in the middle, an air inlet 2 on the upper end, and a filter screen 3 is housed. Copper core 6 is contained in the downside of filter screen 3 in the middle through hole of electromagnet 4, and the lower end of copper core 6 is equipped with spring 7, and spring 7 lower ends are pressed on the upper end of the plate valve plate 9 that is provided with air vent. The plate valve piece 9 is installed in the middle of the spacer 10 and can move freely in the middle of the spacer. A gasket 8 is installed between the upper end of the spacer 10 and the lower side of the valve body 1. The upper end of the annular valve seat 11 and the spacer 10 Lower connection. The lower end of the plate valve plate 9 forms a mechanical seal connection with the annular groove at the upper end of the annular valve seat. The lower side of the annular valve seat 11 is sealedly connected with the air outlet 15 with an O-shaped rubber ring 12 .

Claims (2)

1. A plate-type gas pulse injection solenoid valve, which is composed of a valve body, an electromagnet, a filter screen in the air inlet at the upper end of the electromagnet, a copper core installed on the lower side of the filter screen, and a spring. The coil on the electromagnet is electrically connected to the plug It is injection molded together on the valve body to form an electrical connection socket. It is characterized in that a gasket is installed on the lower side of the valve body, and a spacer is installed at the lower end of the gasket. There is a plate valve plate with a vent hole, and the lower side of the annular valve seat is sealed and connected with the air outlet with an O-shaped rubber ring. 2. The plate type gas pulse injection solenoid valve according to claim 1, characterized in that an annular groove is processed on the annular valve seat.