CN201786513U - Adjustable fuel gas injection valve - Google Patents

Abstract

The utility model relates to an adjustable fuel gas injection valve, which can effectively solve the problem of the traditional gas vehicle injection valve that insufficient working power and unstable working of an engine is caused due to the lack of precision in controlling the consistency of the volumes of the fuel gas to be injected of all cylinders, and adopts a technical scheme that the adjustable fuel gas injection valve comprises a valve body and sleeves, a plurality of groups of sleeves and valve ports which are communicated are arranged on the valve body, a coil is arranged outside every group of sleeves, a fixed core is arranged in the upper end hole of the sleeve, an armature iron is arranged at the lower part of the fixed core, a spring is arranged between the armature iron and the fixed core, a shock-absorbing ring is arranged at the upper end opening of the armature iron, a sealing piece is arranged between the armature iron and the valve port, a nozzle is arranged on the valve port, and a dust cap is mounted on the fixed core. The adjustable fuel gas injection valve provided by the utility model is unique in structure, convenient in use and excellent in effect, and is an innovation on the gas vehicle injection valve.

Description

Adjustable fuel gas injection valve

One, technical field

The utility model relates to air valve, particularly a kind of adjustable fuel gas injection valve.

Two, background technique

In view of modern society's protection environment and the demand that economizes on resources; with liquefied petroleum gas (LPG)/compressed natural gas is that the sequence of cars ejecting system of fuel arises at the historic moment; as a vitals in the automobile fuel gas sequencial jet system; the stability of the gas blowing volume flow rate of injection valve; conformity; the conformity of each cylinder unlatching and closing time has fundamental influence to the stability and the power character of engine operation; in the market the fuel gas injection valve that generally uses much can both realize the multi-cylinder continuous injection; but because the defectives of product self structure etc. are all multifactor; can't accurately control the conformity of the time of each cylinder unlatching of spray valve and closure; also can't be precisely controlled thereby each cylinder fuel sprays the conformity of volume flow rate; make motor in real work medium power deficiency; work is unstable; therefore, the improvement of gas combustion automobile injection valve and innovation are the problems that needs solution.

Three, summary of the invention

At above-mentioned situation, for overcoming the defective of prior art, the purpose of the utility model just provides a kind of adjustable fuel gas injection valve, can effectively solve and be short of power when conformity that existing gas combustion automobile injection valve sprays volume flow rate because of each cylinder fuel can't precisely controlledly cause engine operation and the problem of the shakiness of work, the technological scheme of its solution is, comprise valve body and sleeve, the sleeve and the valve port that have many groups to be communicated with on the valve body, there is coil every group of sleeve outside, in the upper end hole of sleeve static iron core is arranged, armature is arranged at the static iron core bottom, between armature and the static iron core spring is arranged, the armature upper end-hole has damping ring, between armature and the valve port diaphragm seal is arranged, nozzle is housed on the valve port, dust cap is housed on the static iron core, the utility model structure uniqueness, easy to use, effective, be the innovation on the gas combustion automobile injection valve.

Four, description of drawings

Accompanying drawing is the utility model structural front view (wherein one group of sleeve and valve body place cut open).

Five, embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Provide by accompanying drawing, the utility model comprises valve body and sleeve, the sleeve 8 and the valve port 11 that have many groups (providing 4 groups among the figure) to be communicated with on the valve body 16, there is coil 5 every group of sleeve 8 outsides, and static iron core 2 is arranged in the upper end hole of sleeve 8, armature 7 is arranged at static iron core 2 bottoms, between armature 7 and the static iron core 2 spring 4 is arranged, armature 7 upper end-hole have damping ring 6, between armature 7 and the valve port 11 diaphragm seal 10 are arranged, nozzle 15 is housed on the valve port 11, dust cap 1 is housed on the static iron core 2.

In order to guarantee using effect, 4 cylinder bodies 19 are arranged on the said valve body 16, sleeve 8, valve port 11 are equipped with first seal ring 9 between valve body 16 and the sleeve 8 in screw thread is fixed on cylinder body 19 on the valve body 16, second seal ring 13 is housed between valve body 16 and the valve port 11.

Said nozzle 15 is fixed on the valve port 11 through screw thread, and the 3rd seal ring 14 is housed between valve port 11 and the nozzle 15, and such Connecting format can be changed nozzle 15 fast according to different demands, does not need to debug the miscellaneous part of valve.

Said dust cap 1 is fixed on sleeve 8 upper end portions through jump ring 18.

There is screw thread the lower end of said static iron core 2, and there is interior hexagonal the upper end, and static iron core 2 is in screw thread is fixed on sleeve 8,2 seal grooves are arranged on the static iron core 2, static seal circle 3 is arranged in the seal groove, adjust the stroke of static iron core 2 in sleeve 8, adjust the gap length of static iron core 2 and armature 7 by interior hexagonal.

The utility model adopts the multi-cylinder structure of rail altogether, every cylinder all has a nozzle 15, valve body 16 1 ends have suction port 17, the other end has plug 12, sleeve 8 couples together with the mode and the valve body 16 of valve port 11 by screw thread, effect by seal ring 9 and 13 seals gas, valve port 11 and the distance above the valve body 16 can obtain conforming assurance by precise machining process, static iron core 2 screws in sleeve 8 by screw thread, and can prevent the leakage of gas by the effect of 2 static seal circles 3, by the adjusting of static iron core 2 being guaranteed the conformity of static iron core 2 and valve port 11 spacings, spring 4 is in its pre-compressed state between static iron core and armature 7, and armature 7 there is downward pressure, under the effect of spring force, the 10 pairs of valve ports 11 of diaphragm seal that are installed on armature 7 belows seal, and prevent that gas from not having directly to enter nozzle 15 under the electromagnetic force effect, coil 5 is fixed on the sleeve 8, and dust cap 1 is installed in by drive fit and plays the dust sealing effect on the static iron core 2.

When the utility model uses, be access in the sequencial jet system, suction port 17 is connected to air feeder by flexible pipe, coil 5 is connected to control ECU by wire harness, nozzle 15 is connected to each cylinder firing chamber of motor by flexible pipe, and during work, gas feeds, enter valve body 16 by suction port 17, when ECU sends impulsive current, when direct impulse, in 7 adhesives of coil 5 electromagnetic force effect lower armatures, valve port 11 is opened, combustion gas is sprayed through nozzle 15 and is entered engine chamber, and during negative-going pulse, electromagnetic force disappears, effect lower valve port in spring (4) power is closed, and reaches the gas blowing amount of accurate control injection valve.

The utility model structure uniqueness, easy to use, can effectively solve and be short of power when conformity that existing gas combustion automobile injection valve sprays volume flow rate because of each cylinder fuel can't precisely controlledly cause engine operation and the problem of the shakiness of work, be the innovation on the gas combustion automobile injection valve.

Claims (5)

1. An adjustable gas injection valve, comprising a valve body and a sleeve, is characterized in that there are multiple groups of connected sleeves (8) and valve ports (11) on the valve body (16), and each group of sleeves (8 ) has a coil (5) on the outside, a static iron core (2) in the upper hole of the sleeve (8), an armature (7) at the bottom of the static iron core (2), and an armature (7) and a static iron core (2). There is a spring (4) between them, a shock-absorbing ring (6) on the upper port of the armature (7), a sealing sheet (10) between the armature (7) and the valve port (11), and a nozzle (15) on the valve port (11). ), a dustproof cap (1) is housed on the static iron core (2). 2. The adjustable gas injection valve according to claim 1, characterized in that there are four cylinders (19) on the valve body (16), the sleeve (8), valve port (11) are Buckle is fixed in the cylinder body (19) on the valve body (16), the first sealing ring (9) is housed between the valve body (16) and the sleeve (8), the valve body (16) and the valve port (11 ) is equipped with a second sealing ring (13). 3. The adjustable gas injection valve according to claim 1, characterized in that, said nozzle (15) is fixed on the valve port (11) through a threaded thread, and between the valve port (11) and the nozzle (15) Equipped with a third sealing ring (14). 4. The adjustable gas injection valve according to claim 1, characterized in that said dustproof cap (1) is fixed on the upper end of the sleeve (8) via a snap ring (18). 5. The adjustable gas injection valve according to claim 1, characterized in that, the lower end of said static iron core (2) has a screw thread, and the upper end has an inner hexagon, and the static iron core (2) is fixed on the In the sleeve (8), there are 2 sealing ring grooves on the static iron core (2), and there are static sealing rings (3) in the sealing ring grooves.

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