CN1945002A

CN1945002A - Gas high precision jet valve

Info

Publication number: CN1945002A
Application number: CN 200610051252
Authority: CN
Inventors: 苗建中; 姚桂芬; 黄本尧; 杨建�
Original assignee: Guizhou Honglin Machinery Co Ltd
Current assignee: Guizhou Honglin Machinery Co Ltd
Priority date: 2006-10-26
Filing date: 2006-10-26
Publication date: 2007-04-11
Anticipated expiration: 2026-10-26
Also published as: CN100462549C

Abstract

The precise fuel gas jetting valve for gas burning automobile includes valve body with gas inlet hole and gas jetting hole, mandrel guiding seat, pole shoe, armature assembly, valve seat, spring and spring seat assembly, steel ball in the valve seat, armature tube assembly, coil assembly, elastic pad and screw. The precise fuel gas jetting valve distributes and meters fuel gas and jets it into the airflow entering to the cylinder for mixing and layered burning. It realizes the on-line flow rate regulation to raise the flow rate controlling precision, has good technological performance and reliable operation, and is suitable for electronic fuel oil jetting system in gas burning automobile.

Description

Gas high precision jet valve

Technical field: the present invention relates to a kind of gas high precision jet valve that is applied to gas combustion automobile electronic fuel injection engine system.

Background technique: at present, fuel gas injection valve is used widely along with developing rapidly of national gas combustion automobile, but great majority belong to external product, because this fuel gas injection valve structural issue, in actual use, owing to exist problems such as the loosening and flow scattered error of the fracture of ladder push rod, armature pipe in the armature component is big to cause fuel gas injection valve early failue, functional reliability is poor, in gas engine, belong to easily damaged parts, and price is higher, has restricted the development of gas engine to a great extent.

In the structure of general gas injection valve, the stroke of fuel gas injection valve is determined by apolegamy valve seat and spring seat assembly, and in a single day part is pressed into valve body, stroke is just non-adjustable, requirement on machining accuracy to part is very high, be difficult to guarantee the accurate adjustment and the conforming control of flow of stroke, cause the fluctuation of speed of gas engine.

In the structure of general gas injection valve, the closing in mode of armature pipe assembly is to finish by part deformation, regulate reverse stroke with this kind form, requirement on machining accuracy to the closing in frock is very high, be difficult to guarantee the accurate adjustment of reverse stroke, and the armature pipe assembly is subjected to the high-frequency percussion of armature component at work, in use usually has the armature pipe assembly to become flexible phenomenon, influences the functional reliability of product.

In the armature component of general gas injection valve, push rod is a hierarchic structure, because armature component is the moving element of fuel gas injection valve, in proper functioning, be in the dither state, and push rod is stepped, and size is less, and the fillet at ladder place is difficult to reach machining accuracy, be easy to generate stress and concentrate, the push rod fracture in use takes place easily cause the fuel gas injection defective valve.

Summary of the invention: the gas high precision jet valve that the object of the present invention is to provide a kind of gas combustion automobile electric injection system, this injection valve processing cost is low, reduce the machining accuracy of processing technology difficulty and part, improve assembly precision, make injection valve reach reliable operation, the simple in structure and accurate purpose of controlling of emitted dose.

Formation of the present invention: by spring seat assembly, valve seat, the push rod guide holder, valve body, pole shoe, armature component, the armature pipe assembly, cushion, screw, coil block, damping pad, O shape circle, steel ball and spring are formed, in valve body 4, be pressed into push rod guide holder 3, push rod guide holder 3 endoporus are through hole, be pressed into pole shoe 5 at valve body 4 left ends, pole shoe 5 endoporus are through hole, the endoporus of push rod guide holder 3 and pole shoe 5 is armature component 6 movingly, the push rod right-hand member of armature component 6 has ball-and-socket, at valve body 4 right-hand members valve seat 2 is installed, put into steel ball 13 at the valve seat endoporus, be endless belt rigidity sealing between steel ball and the valve seat, at valve body 4 right-hand member mounting spring 14 and spring seat assembly 1; Armature pipe assembly 7 and pole shoe 5 welding, armature pipe assembly 7 outer hookup wire coil assemblies 10, by cushion 8 and screw 9 fixed coil assemblies 10, valve body 4 right-hand members have inlet hole 15, and left end has fumarole 16.

The push rod structure form is straight push rod structure in the armature component 6.

The closing in mode of armature pipe assembly 7 is to be pressed into armature pipe by pipe cap with the level, welds then, and armature pipe assembly 7 with the closing in mode of pole shoe 5 is: the rigging position of armature pipe assembly is determined, welded then.

Damping pad 11 is installed on the annular boss right side of valve body 4, two O shape circles 12 are installed on the cylindrical.

Compared with the prior art, the invention provides a kind of gas high precision jet valve that improves structure that has, this injection valve comprises component such as spring seat assembly, valve seat, push rod guide holder, valve body, pole shoe, armature component, armature pipe assembly, coil block, spring.This injection valve is two to close the Electromagnetic Drive ball-valve structure usually, and when the injection valve no electric circuit, steel ball is under the effect of return spring, and steel ball is in the seal ring of valve seat, and the combustion gas by inlet hole can not arrive fumarole, and injection valve is in closed condition; When injection valve was switched on, coil block produced electromagnetic force, and electromagnetic force drives armature component, promote steel ball and overcome spring force, force steel ball to be lifted off a seat to arrive the spring seat assembly end, inlet hole and fumarole together with, injection valve is in open mode, and combustion gas this moment sprays into motor by ball valve.

In this injection valve structure, cancelled the wire cutting technology part of former valve seat, the length of valve seat shortens, structure becomes simple, making has enough spaces between valve seat and the spring seat assembly, therefore can control the stroke of injection valve by the rigging position of adjusting valve seat, thus the flow of control valve.After this structure change, not only make the Stroke Control of injection valve become easy, and can in flow test, carry out online adjusting, eliminate the difference between the part, reach the purpose of the flow conformity control accuracy that improves injection valve, also reduce simultaneously the requirement on machining accuracy and the processing cost of part, reduced to assemble scrappage.

In this injection valve structure, the closing in mode of armature pipe assembly is to be pressed into the armature pipe tightness by pipe cap with the level to cooperate, and welds then and finishes, and the closing in mode of armature pipe assembly and pole shoe is; The armature pipe assembly is pressed into tightness cooperation on the pole shoe with the level, the reverse stroke of valve is determined by the rigging position of armature pipe assembly, is welded then and finish, after this architecture advances, make the reverse stroke assembling of valve accurately improve, solve the loosening problem of armature pipe assembly of existing product.

In this spraying structure, the push rod structure in the armature component, cancellation hierarchic structure directly adopts straight push rod, improves corresponding valve base aperture, and the flow of valve is constant before and after guaranteeing to improve.After this architecture advances, improve the machining accuracy of part greatly, solved existing product push rod breakage problem.

Description of drawings: accompanying drawing is a structural representation of the present invention.

Among the figure; 1. spring seat assembly, 2. valve seat, 3. push rod guide holder, 4. valve body, 5. pole shoe, 6. armature component, 7. armature pipe assembly, 8. cushion, 9. screw, 10. coil block, 11. damping pads, 12.O shape circle, 13. steel balls, 14. springs, 15. inlet holes, 16. fumaroles.

Embodiment; As shown in the figure, be pressed into push rod guide holder 3 in valve body 4, push rod guide holder 3 endoporus are through hole, be pressed into pole shoe 5 at the valve body left end, at pole shoe 5 endoporus is through hole, and the endoporus of push rod guide holder 3 and pole shoe 5 is armature component 6 movingly, and the push rod right-hand member of armature component 6 has the ball-and-socket of φ 4.7625; From valve body 4 right-hand members prepackages valve seat 2, and regulating valve seat 2 positions determine the working stroke of valve, put into steel ball 13 at the valve seat endoporus, seal for the endless belt rigidity between steel ball and the valve seat; From pre-shock mount 14 of valve body 4 right-hand members and spring seat assembly 1, the relative position of Regulation spring holder assembly guarantees the air gap of valve, guarantees the reverse stroke of valve by the position that press-fits armature pipe assembly 7, and armature pipe assembly and pole shoe is welded finish closing in; Armature pipe assembly 7 outer hookup wire coil assemblies 10 are by cushion 8 and screw 9 fixed coil assemblies 10; The hole of valve body 4 right-hand members is an inlet hole 15, and the hole of left end is a fumarole 16.When the injection valve no electric circuit, steel ball 13 is under the effect of return spring 14, and steel ball is in the seal ring of valve seat 2, and the combustion gas by inlet hole can not arrive fumarole, and injection valve is in closed condition; When injection valve passes through electricity, coil block 10 produces electromagnetic force, electromagnetic force drives armature component 6, promote steel ball and overcome spring force, force steel ball to be lifted off a seat and arrive spring seat assembly 1 end, inlet hole 15 and fumarole 16 together with, injection valve is in open mode, combustion gas this moment sprays into motor by ball valve.

Damping pad 11 is installed on the spherical boss right-hand member end face of valve body 4, two O shape circles 12 are installed on the cylindrical.

Claims

1. gas high precision jet valve, by spring seat assembly, valve seat, the push rod guide holder, valve body, pole shoe, armature component, the armature pipe assembly, cushion, screw, coil block, damping pad, O shape circle, steel ball and spring are formed, it is characterized in that: in valve body (4), be pressed into push rod guide holder (3), push rod guide holder (3) endoporus is a through hole, be pressed into pole shoe (5) at valve body (4) left end, pole shoe (5) endoporus is a through hole, the endoporus of push rod guide holder (3) and pole shoe (5) is armature component (6) movingly, the push rod right-hand member of armature component (6) has ball-and-socket, at valve body (4) right-hand member valve seat (2) is installed, put into steel ball (13) at the valve seat endoporus, be endless belt rigidity sealing between steel ball and the valve seat, at valve body (4) right-hand member mounting spring (14) and spring seat assembly (1); Armature pipe assembly (7) and pole shoe (5) welding, the outer hookup wire coil assembly of armature pipe assembly (7) (10), by cushion (8) and screw (9) fixed coil assembly (10), valve body (4) right-hand member has inlet hole (15), and left end has fumarole (16).

2. gas high precision jet valve according to claim 1 is characterized in that: the push rod structure form is straight push rod structure in the armature component (6).

3. gas high precision jet valve according to claim 1, it is characterized in that: the closing in mode of armature pipe assembly (7) is to be pressed into armature pipe by pipe cap with the level, weld then, armature pipe assembly (7) with the closing in mode of pole shoe (5) is: the rigging position of armature pipe assembly is determined, welded then.

4. gas high precision jet valve according to claim 1 is characterized in that: damping pad (11) is installed on the annular boss right side of valve body (4), two O shape circles (12) are installed on the cylindrical.