CN104806808B - Band protection device normally closed solenoid valve - Google Patents
Band protection device normally closed solenoid valve Download PDFInfo
- Publication number
- CN104806808B CN104806808B CN201510212570.1A CN201510212570A CN104806808B CN 104806808 B CN104806808 B CN 104806808B CN 201510212570 A CN201510212570 A CN 201510212570A CN 104806808 B CN104806808 B CN 104806808B
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- CN
- China
- Prior art keywords
- valve
- draining
- oil circuit
- rod
- magnetic
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/042—The valves being provided with fuel passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
Abstract
It is an object of the invention to provide band protection device normally closed solenoid valve, including valve body, electromagnetism valve portion, draining valve portion, electromagnetism valve portion and draining valve portion are arranged on valve body, electromagnetism valve portion includes electromagnetism valve casing, magnet coil, armature, magnetic valve valve rod, magnet coil and armature are arranged in electromagnetism valve casing, magnetic valve valve rod is fixed on armature, draining valve portion includes draining cone valve, branch sleeve, draining valve rod, draining valve spring, outside is provided with the branch sleeve of magnetic valve spring and magnetic valve valve rod is interference fitted, branch sleeve is connected with draining cone valve, draining cone valve connects gate gurgle valve valve rod, gate gurgle valve valve rod is arranged in valve stem sleeve, gate gurgle valve valve stem end is cased with draining valve spring, oil-feed oil circuit is set on valve body, draining oil circuit, oil-feed oil circuit and valve stem sleeve intersect setting, draining oil circuit leads to magnetic valve spring position.The present invention can improve engine reliability.
Description
Technical field
The present invention relates to the fueling injection equipment of a kind of fueling injection equipment, specifically engine.
Background technology
With the progress of human society, the development of Modern Engine has to face energy crisis and environmental pollution band
The dual-pressure come, the developing trend of engine is electric in realizing the control to engine fuel injection system using Electronic Control
Magnetic control valve is a kind of important technical.By solenoid electric valve control engine can be made to have injection pressure height, injection timing
Flexible adjustable the features such as.
Traditional normally open valve is when magnetic valve not upper electricity, and the draining oil circuit of valve is in normally open, and fuel oil passes through draining oil circuit
Flow back to fuel tank.After electricity on magnetic valve, draining oil circuit is closed by electromagnetic force, now fuel oil can flow to oil spout through normally open valve
The hydraulic means such as device.But there is following deficiency in traditional normally open valve：First, when solenoid valve failure can not go up electricity, draining oil circuit
Open mode will be in all the time, and normally open valve will can not complete the function of control fuel flow communication；If being closed second, magnetic valve is stuck
Oil pressure can be raised constantly in state, valve, and other hydraulic means that valve and valve are connected are had undesirable effect, cause other hydraulic pressure to fill
Put and destroyed.Traditional normal-open electromagnetic valve security is poor in a word, it is difficult to meet the job stability of engine, does not possess pair
The ability that failure is reacted in time.
The content of the invention
It is an object of the invention to provide the band protection device normally closed solenoid valve that can improve engine reliability.
The object of the present invention is achieved like this：
Present invention band protection device normally closed solenoid valve, it is characterized in that：Including valve body, electromagnetism valve portion, draining valve portion, electricity
Magnet valve part and draining valve portion are arranged on valve body, and electromagnetism valve portion includes electromagnetism valve casing, magnet coil, armature, electromagnetism
Valve valve rod, the magnet coil and armature of mutual cooperation are arranged in electromagnetism valve casing, and magnetic valve valve rod is fixed on armature, gate gurgle valve
Part includes draining cone valve, branch sleeve, draining valve rod, draining valve spring, and outside is provided with the branch sleeve of magnetic valve spring
It is interference fitted with magnetic valve valve rod, branch sleeve is connected with draining cone valve, draining cone valve connection gate gurgle valve valve rod, gate gurgle valve valve rod
It is arranged in valve stem sleeve, gate gurgle valve valve stem end is cased with draining valve spring, valve body setting oil-feed oil circuit, draining oil circuit, oil-feed
Oil circuit and valve stem sleeve intersect setting, and draining oil circuit leads to magnetic valve spring position.
The present invention can also include：
1st, draining cone valve is arranged to trapezium structure, the inclined-plane of trapezium structure and its side with one end that gate gurgle valve valve rod is connected
Valve body is engaged.
2nd, gate gurgle valve valve rod is located at part the first compression face of setting and the second compression face that oil-feed oil circuit intersects with valve stem sleeve,
First compression face and the second compression face are stairstepping, and the first compression face is located at draining cone valve side relative to oil-feed oil circuit, the
Two compression faces are located at draining valve spring side relative to oil-feed oil circuit.
3rd, 1.2 times of the area of the first compression face not less than the second compression face area.
Advantage of the invention is that：The present apparatus can effectively control stream of the fuel oil by valve in magnetic valve normal work
Logical speed and currency, while fuel flow communication amount can be realized by the different control mode of magnetic valve and the flexible of moment that circulate
Control.Fuel flow communication of the engine under different operating modes, different load is met by changing the controllable injection system of control signal
Number of times and passage rate need.The present apparatus is normal-closed electromagnetic valve, and when magnetic valve, which breaks down, to go up electricity, gate gurgle valve is in
Normally off, can continue to complete the function of control fuel flow communication, improves the strain of engine when engine power down
Ability and job stability.Meanwhile, the present apparatus is designed with safeguard measure, when magnetic valve, which breaks down, to go up electricity, or connection
When the hydraulic means of normally closed solenoid valve breaks down, gate gurgle valve, which is in normally off, can cause pressure in normally closed solenoid valve constantly to rise
Height, but in the presence of safeguard measure, gate gurgle valve can open draining oil circuit, fuel oil is flowed back to low-pressure reservoir, reduce whole system
In fuel pressure, protect system and device safety.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is magnetic valve part-structure schematic diagram of the invention；
Fig. 3 is gate gurgle valve part-structure schematic diagram of the invention；
Embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
With reference to Fig. 1~3, the present apparatus includes magnetic valve 1 and gate gurgle valve 2.Magnetic valve 1 includes magnet coil 3, armature 4, electromagnetism
Valve valve rod 5, magnetic valve spring seat 6, magnetic valve spring 7 and draining oil circuit 8.Gate gurgle valve 2 include branch sleeve 9, draining cone valve 10,
Oil-feed oil circuit 12, gate gurgle valve valve rod 14 and draining valve spring 15.Magnetic valve 1 passes through magnetic valve valve rod 5 and gate gurgle valve with gate gurgle valve 2
The interference fit of branch sleeve 9 is connected.
Traditional normally open valve magnetic valve not on electricity when, the draining oil circuit of valve is in normally open, and fuel oil passes through draining oil circuit
Flow back to fuel tank；After electricity on magnetic valve, closed electromagnetic valve draining oil circuit, fuel oil can be circulated to the hydraulic pressure such as fuel injector dress through normally open valve
Put.And normal-closed electromagnetic valve on the contrary, upper electricity when, the draining oil circuit of valve is in normally off, and fuel oil is flowed to by oil feeding line
Other hydraulic means；After electricity on magnetic valve, solenoid valve control gate gurgle valve opens draining oil circuit, and fuel oil flows back to oil through draining oil circuit
Case.
The band protection device normally closed solenoid valve of the present invention is made up of magnetic valve 1 and gate gurgle valve 2.Magnetic valve 1 includes electromagnetic wire
Circle 3, armature 4, magnetic valve valve rod 5, magnetic valve spring seat 6, magnetic valve spring 7 and draining oil circuit 8.Gate gurgle valve 2 includes adapter sleeve
Cylinder 9, draining cone valve 10, oil-feed oil circuit 12, gate gurgle valve valve rod 14 and draining valve spring 15.Magnetic valve 1 passes through electromagnetism with gate gurgle valve 2
Valve valve rod 5 is connected with the interference fit of gate gurgle valve branch sleeve 9.When electric on magnetic valve 1, magnet coil 3 produces electromagnetic attracting force rank
Iron 4, armature 4 is with moving electromagnetic valve valve rod 5 to left movement.Magnetic valve valve rod 5 acts power to gate gurgle valve branch sleeve 9, drives
Gate gurgle valve cone valve 10 opens draining oil circuit 8.
When the not upper electricity of magnetic valve 1, draining cone valve 10 is by magnetic valve spring 7, draining valve spring 15 and fuel pressure
With joint efforts, magnetic valve spring 7 and draining valve spring 15 are in compressive state, because the pretightning force F1 of magnetic valve spring 7 is more than draining
Valve spring 15 pretightning force F2, i.e. F1＞ F2, draining cone valve 10 is landed on the conical surface, and fuel oil passes through oil-feed oil circuit 12 and flows into fuel injector
Deng other hydraulic means.When electric on magnetic valve 1, electromagnetic force F3 that gate gurgle valve 10 is produced by magnet coil 3, magnetic valve spring
7 spring force F1, the spring force F2 of draining valve spring 15 and fuel pressure P's makes a concerted effort, now electromagnetic force F3 and draining initial tension of spring
F2's makes a concerted effort more than magnetic valve spring pretightning force F1, i.e. F3+F2＞ F1, gate gurgle valve opens, and fuel oil flows back to oil by draining oil circuit 8
Case.Different circulation moment, currency and passage rates can be realized by changing the size and form of electromagnetic force.
Normally closed solenoid valve engine occur power down situations such as magnetic valve 1 can not on electricity when, gate gurgle valve be in normally off,
Remain able to continue to complete the function of control fuel flow communication, the reliability of fuel system can be improved, improve engine working stability
Property.When magnetic valve 1, which breaks down, to work, draining oil circuit 8 can not be opened, and fuel oil constantly flows into oil spout by oil-feed oil circuit 12
Other hydraulic means such as device, cause other hydraulic means fuel pressures such as normally closed solenoid valve and fuel injector constantly to raise, too high
Fuel pressure system may be damaged.The safety guard that the present apparatus is set will be acted when oil pressure is too high.
The fuel pressure compression face of gate gurgle valve 2 is made up of compression face 11 and compression face 13.In traditional normally open type magnetic valve, the two
Compression face area is identical, by the hydraulic coupling balanced.Fuel path at the draining conical surface is designed as stairstepping by the present apparatus, increase
The area of compression face 11, the area ratio for making itself and the area of compression face 13 is 1.2.Pressure F at compression face 1111＞
1.2F13, when fuel pressure increases to a certain extent, F11+F2＞ F13+F1, the pressure at compression face 11 will push draining cone open
Valve 10, fuel oil flows back into low-pressure reservoir through draining oil circuit 8, reduces the fuel pressure in system, protects normally close valve and other
The safety of hydraulic means.
A kind of band protection device normally closed solenoid valve of the invention, including magnetic valve 1 and gate gurgle valve 2.The band normally closed electricity of protection device
Magnet valve, its left part installs magnetic valve 1, and gate gurgle valve 2 is arranged on the right of magnetic valve 1.Magnetic valve 1 passes through magnetic valve valve with gate gurgle valve 2
Bar 5 is connected with the interference fit of gate gurgle valve branch sleeve 9.Band protection device normally closed solenoid valve, its pretightning force of magnetic valve spring 7 is more than
The pretightning force of draining valve spring 15, is in normally off when not working.Electromagnetic force is produced on magnetic valve 1 after electricity and pulls draining cone valve 10
Open draining oil circuit 8 and complete draining.Magnetic valve, is equipped with magnet coil 3, armature 4, magnetic valve valve rod 5, magnetic valve spring thereon
Seat 6, magnetic valve spring 7 and draining oil circuit 8.Gate gurgle valve, be equipped with thereon branch sleeve 9, draining cone valve 10, oil-feed oil circuit 12,
Gate gurgle valve valve rod 14 and draining valve spring 15.The fuel path at the draining conical surface is wherein designed as stairstepping, compression is increased
The area in face 11, makes the area ratio of itself and the area of compression face 13 be more than 1.2.When fuel pressure is too high, too high fuel pressure
It can open draining cone valve, protection device and fuel system safety.
Claims (1)
1. band protection device normally closed solenoid valve, it is characterized in that：Including valve body, electromagnetism valve portion, draining valve portion, electromagnetism valve portion
It is arranged at draining valve portion on valve body, electromagnetism valve portion includes electromagnetism valve casing, magnet coil, armature, magnetic valve valve rod, phase
The magnet coil and armature mutually coordinated is arranged in electromagnetism valve casing, and magnetic valve valve rod is fixed on armature, and draining valve portion includes
Draining cone valve, branch sleeve, draining valve rod, draining valve spring, outside are provided with the branch sleeve and magnetic valve of magnetic valve spring
Valve rod is interference fitted, and branch sleeve is connected with draining cone valve, and draining cone valve connection gate gurgle valve valve rod, gate gurgle valve valve rod is arranged on valve
In rod set, gate gurgle valve valve stem end is cased with draining valve spring, valve body setting oil-feed oil circuit, draining oil circuit, oil-feed oil circuit and valve
Rod set intersects setting, and draining oil circuit leads to magnetic valve spring position；
Draining cone valve is arranged to trapezium structure, the inclined-plane of the trapezium structure valve body phase other with it with one end that gate gurgle valve valve rod is connected
Coordinate；
Gate gurgle valve valve rod is located at part the first compression face of setting and the second compression face that oil-feed oil circuit and valve stem sleeve intersect, first by
Pressure surface and the second compression face are stairstepping, and the first compression face is located at draining cone valve side relative to oil-feed oil circuit, and second is pressurized
Face is located at draining valve spring side relative to oil-feed oil circuit；
The area of first compression face is not less than 1.2 times of the second compression face area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510212570.1A CN104806808B (en) | 2015-04-30 | 2015-04-30 | Band protection device normally closed solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510212570.1A CN104806808B (en) | 2015-04-30 | 2015-04-30 | Band protection device normally closed solenoid valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104806808A CN104806808A (en) | 2015-07-29 |
| CN104806808B true CN104806808B (en) | 2017-08-04 |
Family
ID=53691894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510212570.1A Active CN104806808B (en) | 2015-04-30 | 2015-04-30 | Band protection device normally closed solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806808B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131462A (en) * | 2019-04-11 | 2019-08-16 | 深圳垦拓流体控制有限公司 | The automatically controlled protection system and automatically controlled guard method of solenoid valve, solenoid valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204677856U (en) * | 2015-04-30 | 2015-09-30 | 哈尔滨工程大学 | Band protective gear normally closed solenoid valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2145080A5 (en) * | 1971-07-08 | 1973-02-16 | Peugeot & Renault | |
| CN2703882Y (en) * | 2004-04-29 | 2005-06-08 | 清华大学 | Electric controlled in-line pump-valve-pipe-nozzle diesel injection device |
| WO2009031007A2 (en) * | 2007-09-04 | 2009-03-12 | Toyota Jidosha Kabushiki Kaisha | A normally closed electromagnetic valve, a brake control system, a control method for a normally closed electromagnetic valve, and an electromagnetic valve |
| JP5255400B2 (en) * | 2008-10-27 | 2013-08-07 | ヤンマー株式会社 | Fuel injection pump |
| CN101806266B (en) * | 2010-03-04 | 2012-07-11 | 哈尔滨工程大学 | Double-valve fuel injecting device with electric-control monoblock pump and electric-control fuel injector |
-
2015
- 2015-04-30 CN CN201510212570.1A patent/CN104806808B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204677856U (en) * | 2015-04-30 | 2015-09-30 | 哈尔滨工程大学 | Band protective gear normally closed solenoid valve |
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| Publication number | Publication date |
|---|---|
| CN104806808A (en) | 2015-07-29 |
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