CN1180180C - Electrically controlled fuel jetting valve for gas fuel engine and its manufacture - Google Patents

Electrically controlled fuel jetting valve for gas fuel engine and its manufacture Download PDF

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Publication number
CN1180180C
CN1180180C CNB021134944A CN02113494A CN1180180C CN 1180180 C CN1180180 C CN 1180180C CN B021134944 A CNB021134944 A CN B021134944A CN 02113494 A CN02113494 A CN 02113494A CN 1180180 C CN1180180 C CN 1180180C
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CN
China
Prior art keywords
armature
valve
valve body
hole
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB021134944A
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Chinese (zh)
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CN1370920A (en
Inventor
苗建中
崔莉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Richearth Red China Power (Wuhan) limited liability company
Original Assignee
HONGHUA SCIENCE & TECHNOLOGY DEVELOPMENT Co Ltd GUIZHOU
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Priority to CNB021134944A priority Critical patent/CN1180180C/en
Publication of CN1370920A publication Critical patent/CN1370920A/en
Application granted granted Critical
Publication of CN1180180C publication Critical patent/CN1180180C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The present invention discloses an electrically controlled fuel jetting valve for gas fuel engines and a manufacture method thereof. An electromagnet adopted in the jetting valve is a suction type electromagnet. A valve seat and a guiding lining are installed in a hole on the right part of a valve body. An electrode boot and an armature pipe are installed in a hole on the left part of the valve body. An armature with a taper valve is installed in the armature pipe. A high-hardness stop pin used for preventing shock resistance is respectively installed in the armature and the electrode boot. A coil is sheathed on the armature pipe. The present invention has the advantages of simple structure, high reliability, low manufacturing cost, long service life, difficult damage, easy flow adjustment and fuel supply with large flow.

Description

Electrically controlled fuel jetting valve for gas fuel engine
Technical field:
The present invention relates to a kind of electrically controlled fuel jetting valve for gas fuel engine, belong to gaseous propellant engine Fuelinjection nozzle technical field.
Background technique:
At present, fuel electric-control injection valve used in the prior art mainly contains two classes, and a class is to use petrol engine gasoline electric-controlled fuel injector as fuel gas injection valve, and another kind of is the fuel gas injection valve that designs for combustion gas specially.First kind fuel gas injection valve is the gasoline electric-controlled fuel injector owing to what adopt, and the latus rectum of control combustion gas circulation is generally less, thereby can't satisfy the combustion gas needs than high power engine; Though and second class is the combustion gas specialized designs, ubiquity accuracy of manufacturing and is required height, makes problems such as difficulty, cost height; And the electromagnet in the existing electric controlled injection valve generally adopts thrust formula magnet control tapering valve, and thrust formula electromagnet not only exists many, the baroque problems of moving element, and because the thrust of electromagnet makes tapering valve and the bigger impact force of its valve seat generation easily, thereby exist also that functional reliability is lower, the easy impaired problem of valve.
Summary of the invention:
The objective of the invention is: provide a kind of simple in structure, reliability is higher, manufacture cost is lower, not fragile, be easy to the flow adjustment and be adapted to the electrically controlled fuel jetting valve for gas fuel engine of big flow fuel gas supply.
The present invention is achieved in that it adopts the suction type electromagnet to control the tapering valve of injection valve in injection valve, its concrete injection valve of making is: be provided with left hole and right hole in valve body, valve seat and guide bush are housed in the right hole of valve body, pole shoe and armature pipe are housed in the left hole of valve body, one end of armature pipe is fixed on the pole shoe, an armature that has the tapering valve is housed in armature pipe and valve body, on the cylindrical of the right half part of armature, be with a spring, the left side of spring leans on valve body, the right leans on the boss of armature, coil is enclosed within on the armature pipe, and is fastened on the pole shoe by screw and cushion.
In armature and pole shoe, be equipped with one respectively and be used for shock proof high hardness stop pin.
Owing to adopted technique scheme, the present invention compared with prior art, at first the present invention changes the thrust electromagnet into the suction electromagnet, the quantity and the required precision of movement parts have been reduced, thereby it is simple in structure, and reduced the impact force that tapering valve and its valve seat produce, improved valve reliability and operating life; Secondly because part of the present invention is few, can increase the diameter of return spring in the present invention, thereby improve the fatigue resistance of spring and increase its working life; Secondly, adopt the high hardness stop pin in the present invention again, improved the impact resistance between armature and the pole shoe; At last, the aperture of valve of the present invention can be adjusted when assembling easily, thereby has reduced machining accuracy, and has improved the conformity of flow between valve and the valve.Therefore the present invention have simple in structure, reliability is higher, manufacture cost is lower, long service life, not fragile, be easy to the flow adjustment and can supply with the advantage of big flow combustion gas.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention.
Embodiment:
Embodiments of the invention: adopt the suction type electromagnet to control the tapering valve of injection valve, during making, in valve body (1), produce left hole (14) and right hole (17) earlier, in the right hole (17) of valve body (1), be pressed into guide bush (3) and valve seat (2) then successively, one end of armature pipe (13) is enclosed within pole shoe (12) to be gone up and by roll extrusion itself and pole shoe (12) is connected as one, in armature (6) and pole shoe (12), load onto stop pin (7) and (8) that are used to prevent shock proof high hardness respectively, and fix a tapering valve (4) at the front end of armature (6), in the left hole (14) of valve body (1), be pressed into then and pole shoe (12) roll extrusion armature pipe (13) together, in armature pipe (13) and valve body (1), load onto an armature (6) that has tapering valve (4), and make armature (6) can be in armature pipe (13) movable, a cover spring (5) on the cylindrical of the right half part of armature (6), the left side of spring (5) is leaned on valve body (1), its the right leans on the boss (15) of armature (6), coil (9) is enclosed within on the armature pipe (13), and is fastened on pole shoe (12) by screw (11) and cushion (10) and goes up.
When using injection valve of the present invention, can be installed in it with gaseous fuels such as rock gas or liquefied petroleum gas (LPG) be on the motor of fuel, or to be installed in it with fuel oil and combustion gas be on the duel fuel engine of fuel, and can adopt existing ECU electronic control technology to control this injection valve, when injection valve of the present invention is worked, the combustion gas of certain pressure is input in the hole (17) by combustion gas input hole (16), when coil (9) dead electricity, armature (6) is being shifted tapering valve (4) on the valve seat (2) onto under the effect of spring (5) and gaseous-pressure, seal combustion gas discharge port (18), make combustion gas can't pass through combustion gas discharge port (18), when coil (9) is switched on, till the electromagnetic attraction that pole shoe (12) produces between armature (6) makes armature (6) overcome the spring force and the gaseous-pressure of spring (5) and drives stop pin (8) that stop pin (7) that tapering valve (4) moves to armature (6) left leans pole shoe (12) and go up, at this moment, passage between input hole (16) and the combustion gas discharge port (18) is opened, and combustion gas is injected in the motor by combustion gas discharge port (18).
Circulation area by injection valve is by the decision of the aperture between tapering valve (4) and the valve seat (2), can adjust gas flow by valve by the mounting point that changes valve seat (2).
The energising moment and the energising endurance of control coil (9), promptly may command sprays into the in-engine fuel gas injection moment and emitted dose by injection valve.

Claims (2)

1, a kind of electrically controlled fuel jetting valve for gas fuel engine, it comprises valve body (1), it is characterized in that: in valve body (1), be provided with left hole (14) and right hole (17), valve seat (2) and guide bush (3) are housed in the right hole (17) of valve body (1), pole shoe (12) and armature pipe (13) are housed in the left hole (14) of valve body (1), one end of armature pipe (13) is fixed on the pole shoe (12), an armature (6) that has tapering valve (4) is housed in armature pipe (13) and valve body (1), on the cylindrical of the right half part of armature (6), be with a spring (5), the left side of spring (5) leans on valve body (1), the right leans on the boss (15) of armature (6), coil (9) is enclosed within on the armature pipe (13), and is fastened on the pole shoe (12) by screw (11) and cushion (10).
2, electrically controlled fuel jetting valve for gas fuel engine according to claim 2 is characterized in that: be equipped with one respectively and be used for shock proof high hardness stop pin (7) and (8) in armature (6) and pole shoe (12).
CNB021134944A 2002-03-21 2002-03-21 Electrically controlled fuel jetting valve for gas fuel engine and its manufacture Expired - Fee Related CN1180180C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB021134944A CN1180180C (en) 2002-03-21 2002-03-21 Electrically controlled fuel jetting valve for gas fuel engine and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB021134944A CN1180180C (en) 2002-03-21 2002-03-21 Electrically controlled fuel jetting valve for gas fuel engine and its manufacture

Publications (2)

Publication Number Publication Date
CN1370920A CN1370920A (en) 2002-09-25
CN1180180C true CN1180180C (en) 2004-12-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNB021134944A Expired - Fee Related CN1180180C (en) 2002-03-21 2002-03-21 Electrically controlled fuel jetting valve for gas fuel engine and its manufacture

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109555620B (en) * 2018-10-22 2023-09-22 中船动力研究院有限公司 Gas injection valve with automatic protection device and working method thereof

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Publication number Publication date
CN1370920A (en) 2002-09-25

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