CN203098117U - Fuel oil pressure stabilizer and fuel oil injection device thereof - Google Patents
Fuel oil pressure stabilizer and fuel oil injection device thereof Download PDFInfo
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- CN203098117U CN203098117U CN 201220684519 CN201220684519U CN203098117U CN 203098117 U CN203098117 U CN 203098117U CN 201220684519 CN201220684519 CN 201220684519 CN 201220684519 U CN201220684519 U CN 201220684519U CN 203098117 U CN203098117 U CN 203098117U
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- fuel oil
- fuel
- stabilizer
- fuel pressure
- pressure stabilizer
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Abstract
The utility model discloses a fuel oil pressure stabilizer and a fuel oil injection device thereof. The fuel oil pressure stabilizer comprises a stabilizer body provided with an elastic structural portion adjusting pressure by stretching and retracting is arranged on the stabilizer body. The section of the elastic structural portion is of S-shaped structure feature which is a curve or combination of multiple curves. The section is provided with an inner ring elastic structural portion of S-shaped structure feature, and the inner ring elastic structural portion can generate real-time stretching or retracting deformation according to micro fuel oil pressure on inner and outer sides of a metal diaphragm, volume of a fuel oil volume cavity is changed so as to kept fuel oil pressure in a fuel oil cavity constant, and accordingly, stability and accuracy of one-time injection of fuel oil of a fuel oil injection system and uniformity in multi-times injection are guaranteed.
Description
Technical field
The utility model relate to boats and ships that fuel oil drives, vehicle motor fuel oil control, spray, transmit, pressurization, drive, the power plant of discharging, and the technical field of the dynamic control of the liquid fuel in the hydraulic power system, be specifically related to a kind of fuel pressure stabilizer and fuel injection apparatus thereof.
Background technique
Boats and ships and vehicle motor that existing fuel oil drives have generally adopted electric control fuel oil jet system, high-speed electromagnetic valve is the critical component of decision electric control fuel oil jet system performance, no matter at traditional pump in upright arrangement, pump nozzle, monoblock pump, high-pressure common rail, still up-to-date gasoline in-cylinder direct injection.The most basic function of engine fuel injection device mainly is with fuel oil pressurization, regulates the fuel injection amount and the injection time of single, reasonably is assigned to the fuel oil after pressurized in the middle of each cylinder and makes it to atomize in the firing chamber.In the whole process, all be to realize by accurate control to high-speed electromagnetic valve to the optiumum control of fuel injection quantity and fuel injection characteristic.
High-speed electromagnetic valve is to pass through solenoid valve, exciting current is changed into magnetic field, then magnetic energy is changed into mechanical energy, pulling armature valve rod assembly (armature assembly) rapid movement, sealing surface opening fast and closing, the dynamic injection control of realization fuel oil between the sealing cone of realization valve rod rear and the valve seat; The single injection event time of fuel oil normally hundreds of delicate the fuel oil single injection amount is several cubic millimeters to several thousand cubic millimeters to several thousand delicate, and have characteristics such as fuel-injection pressure height, injection flow velocity height.In the engine working process that fuel oil drives, high-speed electromagnetic valve has determined the dynamic performance of engine electric control fuel oil spraying system.
The stability of charge oil pressure directly influences the accuracy and the stability of single injection event in the fuel injection processes, and the conformity between multi-injection.Make great efforts to reduce the fluctuation of charge oil pressure in the fuel injection processes, the stability that improves fuel pressure becomes fuel oil and drives engine fuel or ejecting system and Design of device exploitation common-denominator target.
Fig. 5 is the tectonic maps of the motor intermediate fuel oil injection apparatus of existing typical fuel oil driving.Wherein the arrow on the left side is the high pressure fuel import among Fig. 5, and the arrow on the right is a fuel injection oil bundle.The oil pipe (not shown) enters joint 1 with fuel oil and links to each other, and after the high pressure fuel process oil pipe of 180MPa and fuel oil enter joint 1, enters fuel oil cavity volume 15.The fuel injection high-speed electromagnetic valve is made up of electromagnet stator iron core 2, electromagnetic coil 3, armature 4, valve rod 20.
Exciting current on the electromagnetic coil 3 is controlled by the electronic control unit ECU of motor.The dynamic implementation procedure of fuel injection is as follows: ECU (Electrical Control Unit) ECU powers up on electromagnetic coil 3, the direction electromagnetic attraction left that the magnetic field that produces after powering up produces on armature 4, armature 4 pulling valve rods 20 are to left movement, valve rod spring 23 by compression in this process, steel ball 24 on valve rod 20 tail ends is mentioned from valve seat 7, this moment, opened the fuel gallery, thereby realize the injection of fuel oil.When electromagnetic coil 3 dead electricity, valve rod spring 23 discharges the spring force of pressurized, and promote the armature valve rod assembly and move right, the sealing surface closure between steel ball 24 and the valve seat 7, the fuel gallery is closed, and course of injection finishes.In addition, the parts that also comprise among Fig. 5: the access electrode 8 of fuel injection apparatus, the first day of the lunar month material fitting seat 9 of fuel injection apparatus, fuel pressure stabilizer 10, seal ring 6.
Fig. 6 is the formation schematic representation of fuel injection apparatus high speed solenoid valve.After powering up on the electromagnetic coil 3, the magnetic field in the solenoid valve stator iron core 2 produces electromagnetic force to armature 4, and armature 4 pulling valve rod assemblies 20 are to left movement, and open the fuel gallery between valve rod steel ball 24 and the valve seat 7, carries out fuel injection.At armature valve rod assembly 20 to left movement; With iron core 2 attracting process in, the volume of fuel oil cavity volume 15 by compression, it is poor that positive dynamic pressure appears in fuel oil cavity volume 15, stability to the fuel oil single injection amount in the fuel injection processes, the conformity of emitted dose between the multi-injection, and the distribution of fuel injection oil bundle produces adverse influence.In addition, also comprise fuel pressure stabilizer 10 among Fig. 6.
Fig. 7 is the axial section of high velocity jet solenoid valve shown in Figure 6.As shown in Figure 7, in order to guarantee the invariable of course of injection intermediate fuel oil pressure, assembled a fuel pressure stabilizer 10 on the right-hand member end face of armature 4, both weld on the outer shroud edge, form a member.Fuel pressure stabilizer 10 is attached on the right-hand member end face of armature 4, and both weld on the outer shroud edge.
Fig. 8 shown between stator iron core 2 in the fuel injection solenoid valve, armature 4, fuel pressure stabilizer 10 threes assembly relation.
Fig. 9 has shown the structure and the structure of existing typical fuel pressure stabilizer.Comprise that the fuel pressure stabilizer structure comprises fuel pressure stabilizer cylindrical anchor ring 11, elastic stretch arm 12, oil-through hole washer 13, oil-through hole 14 4 major parts.After solenoid valve powers up, armature 4 is subjected to the electromagnetic force effect, drive shown in valve rod assembly 20(Fig. 5 or Fig. 6) be moved to the left, with stator iron core 2 direction quick pick-ups, in this process shown in valve rod spring 23(Fig. 5 or Fig. 6) be compressed, shown in fuel oil cavity volume 15(Fig. 5 or Fig. 6) volume be compressed, the dynamic positive pressure difference that occurs promotes each elastic stretch arm 12 of fuel pressure stabilizer, open to the right, carry out pressure release, along with the decline of fuel pressure, elastic stretch arm 12 resets; Be shown in 12 pairs of fuel oil cavity volumes of the elastic stretch arm 15(Fig. 5 or Fig. 6 on the manostat) in fuel pressure change and to make a response, the pressure of fuel oil increases in cavity, surpass normal pressure value, when dynamic malleation pressure reduction occurring, the elastic stretch arm 12 of manostat expands outwardly, shown in fuel oil cavity volume 15(Fig. 5 or Fig. 6) volume increase; Shown in fuel oil cavity volume 15(Fig. 5 or Fig. 6) interior fuel oil reduces, the subnormal pressure value, when dynamic negative-pressure occurring, elastic stretch arm 12 inwardly shrinks, shown in fuel oil cavity volume 15(Fig. 5 or Fig. 6) volume reducing; Remain shown in fuel oil cavity volume 15(Fig. 5 or Fig. 6) pressure stability.
But in the fuel injection processes in the above technological scheme charge oil pressure accuracy and the conformity between stability and multi-injection, still be not very desirable.
The model utility content
The utility model has overcome the deficiencies in the prior art, and a kind of fuel pressure stabilizer and fuel injection apparatus thereof are provided, and is used for solving prior art, in the fuel injection processes charge oil pressure accuracy and stable unfavorable technical problem.
Consider the problems referred to above of prior art, according to the disclosed aspect of the utility model, the utility model by the following technical solutions:
A kind of fuel pressure stabilizer comprises the stabilizer body, and described stabilizer body is provided with by upholding or shrinking the pressure controlled elastic structure portion that carries out.
In order to realize the utility model better, further technological scheme is:
In an embodiment of the present utility model, the section of described elastic structure portion has S shape structure characteristic.
In an embodiment of the present utility model, described S shape structure characteristic is a curve, or the combination of many curves.
In an embodiment of the present utility model, the thickness of described elastic structure portion is 0.02mm～0.35mm.
In an embodiment of the present utility model, described elastic structure portion is a metal.
In an embodiment of the present utility model, described elastic structure portion is provided with and is used for the hole that fuel oil passes through.
In an embodiment of the present utility model, described hole is a plurality of, is the center of circle with the center on plane, described elastic structure portion place, evenly distributes.
In an embodiment of the present utility model, described stabilizer body is a dish.
In an embodiment of the present utility model, the center of described stabilizer body is provided with and is used for the fixed hole that matches with valve rod.
The utility model can also be:
A kind of fuel injection apparatus comprises the described fuel pressure stabilizer of above-mentioned model utility content part.
Compared with prior art, one of the beneficial effects of the utility model are:
Fuel pressure stabilizer outward appearance of the present utility model presents dish shape feature, and section has S shape structure characteristic, adopts elastic metallic Cuprum alloy, high-strength stainless steel to make the thickness 0.02mm～0.35mm of elastic metallic diaphragm.The outer shroud edge of fuel pressure stabilizer can be plane or curved surface, is used for fixing, clamping, the welding of metal diaphragm.The interior ring of manostat elastic metallic diaphragm promptly has on the S shape cross-section structure, has several apertures, as oil-through hole, allows fuel oil to pass through.
Section has the interior ring resilience structure division of S shape structure characteristic, can produce real-time extension or contraction deformation to the small fuel pressure difference of both sides inside and outside the metal diaphragm, change the volume of fuel oil cavity volume, to keep stablizing of fuel oil cavity internal combustion oil pressure constant, thereby guarantee the stability and the accuracy of fuel injection system fuel oil single injection amount, and the conformity between the multi-injection.
Description of drawings
For clearer explanation present specification embodiment or technological scheme of the prior art, to do simple the introduction to the accompanying drawing of required use in the description of embodiment or prior art below, apparently, the accompanying drawing that describes below only is the reference to some embodiments in the present specification, for those skilled in the art, under the situation of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 shows the structural representation according to an embodiment's of the utility model fuel pressure stabilizer.
Fig. 2 shows the cross-sectional view of A-A shown in Figure 1.
Fig. 3 a, Fig. 3 b, Fig. 3 c show several geometrical shape schematic representation as the S shape structure characteristic of fuel pressure stabilizer of using according to an embodiment of the utility model.
Fig. 4 shows the assembly relation schematic representation according to an embodiment's of the utility model fuel pressure stabilizer.
Fig. 5 is the organigram that existing typical fuel oil drives motor intermediate fuel oil injection electromagnetic valve.
Fig. 6 is the axial section schematic representation of Fig. 5 intermediate fuel oil injection electromagnetic valve.
Fig. 7 is the axial section schematic representation of Fig. 6.
Fig. 8 is the existing installation of typical fuel pressure stabilizer in the fuel injection solenoid valve and assembling schematic representation.
Fig. 9 is the structural representation figure of existing typical fuel pressure stabilizer.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, but mode of execution of the present utility model is not limited thereto.
Fig. 1 shows the structural representation according to an embodiment's of the utility model fuel pressure stabilizer.Fig. 2 shows the cross-sectional view of A-A shown in Figure 1.Embodiment with reference to figure 1 or a kind of fuel pressure stabilizer shown in Figure 2 comprises stabilizer body 101, and described stabilizer body 101 is provided with by upholding or shrinking the pressure controlled elastic structure portion 102 that carries out.Can change the fuel oil dynamic pressure of stabilizer body 101 inside and outside both sides and corresponding expansion of the generation of fluctuating or dilatation by this elastic structure portion 102, thereby the volume volume of change fuel oil cavity volume is constant with stablizing of fuel pressure in the realization pressure chamber.
In order to make elastic structure portion have the hypoelasticity rigidity characteristic, the section of its described elastic structure portion 102 can have S shape structure characteristic, realizes that by S shape structure characteristic expansion or dilatation are to regulate pressure.Described elastic structure portion 102 can be metal, and its stabilizer body 101 is seen as dish on the whole, particularly, as Fig. 1 or shown in Figure 2, stabilizer body 101 is circular or similar circle, can certainly be square, rectangular, triangle, polygonal etc., and face shaping is not limit; The one side depression at its middle part, the opposite side projection is to form dish shape feature.Elasticity structural portion 102 is arranged on the middle part of stabilizer body in the embodiment of Fig. 1 or Fig. 2.
Described elastic structure portion 102 is provided with and is used for the hole 103 that fuel oil passes through.As shown in Figure 1, described hole 103 can be a plurality of (having illustrated 5 among Fig. 1), in other words several, concrete quantity is not limit.Can be, be the center of circle with the center on plane, described elastic structure portion 102 place, evenly distributes, in other words circumferentially.
This center of 101 of described stabilizer is provided with and is used for the fixed hole 104 that matches with valve rod, promptly in the use of fuel injection apparatus, plays a part to fix.
Fig. 3 a, Fig. 3 b, Fig. 3 c show using as several geometrical shape schematic representation that encircle S shape section in the fuel pressure stabilizer according to an embodiment of the utility model.Shown in Fig. 3 a, Fig. 3 b, Fig. 3 c, comprise stabilizer body 301 and elastic structure portion 302, particularly, this elastic structure portion 302 is above-mentioned S shape structure characteristic, its this S shape structure characteristic can realize by S shape cross-section structure curve, can be the combination of one or more sigmoid curves, can also be the combination of simple curve or many curves, two S curves are typically arranged, Three S's curve, ripples line curve etc.Having provided among Fig. 3 a, Fig. 3 b, Fig. 3 c can be as the various geometrical shape of ring S shape section in the fuel pressure stabilizer, it all has low spring rate, to guarantee that manostat has good dynamic response performance, and good load-amount of deformation linearity characteristic between the two, guarantee stability and conformity between the repetition work cycle.
Fig. 4 shows the assembly relation schematic representation according to an embodiment's of the utility model fuel pressure stabilizer.As shown in Figure 4, the cylindrical anchor ring 401 of the fuel pressure stabilizer of present embodiment can be the plane, can be curved surface also, and structure shape is not limit, and the cylindrical anchor ring 401 of fuel pressure stabilizer is the circumference of stabilizer body.Can fix with other member by the cylindrical anchor ring 401 of fuel pressure stabilizer, be connected, welding etc.Particularly, its cylindrical anchor ring 401 can be the plane, curved surface, effect is to assemble (fixing, bonding, welding) with other member (solenoid valve armature 402), typically mounting type is the right-hand member end face that is fixed on fuel injection solenoid valve armature 402, and toroidal surface 401 edges weld outside, and both form a member, as Fig. 4, fuel pressure stabilizer outer shroud edge soldered 404.Section has S shape structure characteristic 403, is the flexible structure part on the fuel pressure stabilizer, and the end thrust that the fuel pressure difference of dish-shaped film sheet both sides produces causes 403 extensions of S shape structure characteristic or contraction, carries out the pressure adjustment.Metal foil diaphragm and S shape structure characteristic 403 have extremely low spring rate, and the linear relationship between pressure reduction and the diaphragm deformation amount, dynamic response speed to dynamic differential pressure is fast, very little dynamic differential pressure is all very responsive, not only can reduce the dynamic pressure fluctuation of fuel oil greatly, and dynamic response performance improves obviously also.
A kind of fuel injection apparatus of following discloses, it comprises the fuel pressure stabilizer that above embodiment describes.Fuel pressure stabilizer in the existing fuel injection apparatus that background technique partly can be mentioned replaces with the fuel pressure stabilizer of describing among the above embodiment.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and other embodiment's difference that identical similar part cross-references gets final product between each embodiment.
" embodiment " who is spoken of in this manual, " another embodiment ", " embodiment ", etc., refer to concrete feature, structure or the characteristics described in conjunction with this embodiment and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in specification.Furthermore, when describing a concrete feature, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiments this feature, structure or characteristics also drop in the scope of the present utility model.
Although with reference to a plurality of explanatory embodiments of the present utility model the utility model is described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and mode of executions, and these are revised and mode of execution will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open and claim, can carry out multiple modification and improvement to the constituent elements and/or the layout of subject combination layout in the application.Except modification that constituent elements and/or layout are carried out with improving, to those skilled in the art, other purposes also will be tangible.
Claims (10)
1. a fuel pressure stabilizer comprises the stabilizer body, it is characterized in that, described stabilizer body is provided with by upholding or shrinking the pressure controlled elastic structure portion that carries out.
2. fuel pressure stabilizer according to claim 1 is characterized in that, the section of described elastic structure portion has S shape structure characteristic.
3. fuel pressure stabilizer according to claim 2 is characterized in that, described S shape structure characteristic is a curve, or the combination of many curves.
4. fuel pressure stabilizer according to claim 1 is characterized in that, the thickness of described elastic structure portion is 0.02mm ~ 0.35mm.
5. fuel pressure stabilizer according to claim 1 is characterized in that, described elastic structure portion is a metal.
6. fuel pressure stabilizer according to claim 1 is characterized in that, described elastic structure portion is provided with and is used for the hole that fuel oil passes through.
7. fuel pressure stabilizer according to claim 6 is characterized in that, described hole is a plurality of, is the center of circle with the center on plane, described elastic structure portion place, evenly distributes.
8. according to any described fuel pressure stabilizer of claim 1 to 7, it is characterized in that described stabilizer body is a dish.
9. fuel pressure stabilizer according to claim 8 is characterized in that, the center of described stabilizer body is provided with and is used for the fixed hole that matches with valve rod.
10. a fuel injection apparatus is characterized in that, comprises as any described fuel pressure stabilizer of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220684519 CN203098117U (en) | 2012-12-12 | 2012-12-12 | Fuel oil pressure stabilizer and fuel oil injection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220684519 CN203098117U (en) | 2012-12-12 | 2012-12-12 | Fuel oil pressure stabilizer and fuel oil injection device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN203098117U true CN203098117U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220684519 Withdrawn - After Issue CN203098117U (en) | 2012-12-12 | 2012-12-12 | Fuel oil pressure stabilizer and fuel oil injection device thereof |
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| CN (1) | CN203098117U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016230A (en) * | 2012-12-12 | 2013-04-03 | 成都威特电喷有限责任公司 | Fuel pressure stabilizer and fuel jetting device thereof |
-
2012
- 2012-12-12 CN CN 201220684519 patent/CN203098117U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016230A (en) * | 2012-12-12 | 2013-04-03 | 成都威特电喷有限责任公司 | Fuel pressure stabilizer and fuel jetting device thereof |
| CN103016230B (en) * | 2012-12-12 | 2015-04-29 | 成都威特电喷有限责任公司 | Fuel pressure stabilizer and fuel jetting device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130731 Effective date of abandoning: 20150429 |