CN107061092A - Electric-controlled fuel injector control valve - Google Patents
Electric-controlled fuel injector control valve Download PDFInfo
- Publication number
- CN107061092A CN107061092A CN201710509077.5A CN201710509077A CN107061092A CN 107061092 A CN107061092 A CN 107061092A CN 201710509077 A CN201710509077 A CN 201710509077A CN 107061092 A CN107061092 A CN 107061092A
- Authority
- CN
- China
- Prior art keywords
- fuel
- displaced
- metering valve
- dip hatch
- control valve
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 44
- 238000009434 installation Methods 0.000 claims description 20
- 230000004323 axial length Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 9
- 239000007921 spray Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
-
- 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
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention provides a kind of electric-controlled fuel injector control valve, the electric-controlled fuel injector is made up of with control valve fuel-displaced metering valve, metering valve block and control valve set；The method have the benefit that：A kind of electric-controlled fuel injector control valve is proposed, preferably, draining accuracy of action and rapidity are all preferable for the control valve dexterity of action.
Description
Technical field
The present invention relates to a kind of electronic control injection technology, more particularly to a kind of electric-controlled fuel injector control valve.
Background technology
Electric-controlled fuel injector is a kind of very common fueling injection equipment, and its control structure generally comprises magnetic valve, armature, armature
Axle (corresponding back-moving spring is provided with armature and armature shaft), ball sealer, control valve, plunger, plunger return spring and spray
Mouth, its general principle is：Magnetic valve, armature, armature shaft and ball sealer are arranged on above control valve, and magnetic valve passes through armature and rank
Action of the iron axle to ball sealer is controlled, and then controls the unlatching/closing in the inlet metering hole in control valve；Plunger and nozzle
It is arranged on below control valve, plunger return spring is arranged between plunger and control valve, and plunger return spring can apply to plunger
Downward stress, the cavity formation control chamber between its upper end face and control valve, the high pressure fuel of outside input passes through oil duct
It is introduced separately in control chamber and plunger lower end, when the inlet metering hole in control valve is closed, control valve can make
Fuel oil in control chamber is maintained at high pressure conditions, plunger upper and lower ends oil pressure balance, and plunger is just in the effect of plunger return spring
The lower spray orifice by nozzle is closed, when the inlet metering hole in control valve is in opening, the high pressure fuel in control chamber
Quickly released by inlet metering hole, the high pressure fuel of plunger lower end is acted on just by the upward jack-up of plunger, so that on nozzle
Spray orifice open, realize oil spout；
The flexibility of electric-controlled fuel injector action and accuracy are to weigh the good and bad key of electric-controlled fuel injector performance, existing control
Valve events flexibility processed is poor.
The content of the invention
The problem of in background technology, the present invention proposes a kind of electric-controlled fuel injector control valve, and its structure is：It is described
Electric-controlled fuel injector is made up of with control valve fuel-displaced metering valve, metering valve block and control valve set；
It is provided with the fuel-displaced metering valve on fuel-displaced dip hatch and fuel feed hole, fuel-displaced metering valve lower surface and is provided with annular
Groove；The fuel-displaced dip hatch and annular groove are coaxial with fuel-displaced metering valve；The fuel-displaced fuel-displaced metering valve of dip hatch insertion,
The upper port of fuel-displaced dip hatch is the conical surface, and the lower port diameter of fuel-displaced dip hatch is less than annular groove internal diameter；The oil-feed hole position
In the side of fuel-displaced dip hatch, the input port of fuel feed hole is connected with the lower surface of fuel-displaced metering valve, and the input port is located at annular
The outside of groove, the delivery outlet of fuel feed hole is connected with annular groove bottom；
It is coaxially arranged with the metering valve block under the conditions of dip hatch, uniform pressure, the draining speed of dip hatch is less than
The draining speed in oil measurement hole；；
It is described to control valve pocket to be to be provided with annular breach on tubular structure body, the outer wall of control valve set upper side, control valve pocket
Side wall on be provided with plane, the plane connects the annular breach and control valve pocket lower surface, control the endoporus of valve pocket from
Installation cavity and plunger cavity are up to sequentially formed down, and the internal diameter of installation cavity is more than plunger cavity internal diameter, the connection of installation cavity and plunger cavity
Place forms step surface, and the internal diameter of installation cavity is matched with measuring the external diameter of valve block；The axial length of installation cavity is more than metering valve block
Axial length；
The upper surface of the control valve pocket is contacted with the lower surface of fuel-displaced metering valve, controls connecing for valve pocket and fuel-displaced metering valve
Contact portion is located between the input port and annular groove, and input port and annular groove are mutually isolated, and input port connects with annular breach
It is logical；It is described metering valve block be arranged in installation cavity, metering valve block can be slid axially along installation cavity, the upper port of dip hatch with it is fuel-displaced
The lower port seat of dip hatch is relative, and the lower port of dip hatch is connected with the plunger cavity；When metering valve block upper surface with it is fuel-displaced
When metering valve lower surface is contacted, annular groove is measured valve block upper end face closure；When metering valve block lower surface and the step surface
During contact, there is gap between metering valve block and fuel-displaced metering valve.
The present invention and other peripheral units with reference to when structure as shown in figure 1, it is following with Fig. 1 shown in structure explain this hair
Bright principle：Referring to Fig. 1, A is marked to show in-line in figure, the cavity formation control between dip hatch lower port and plunger
Chamber；The high pressure fuel of outside input is entered in oil injector body and reached at the plane outside control valve pocket by foregoing in-line
(namely the duct formed by plane and oil injector body inwall), the plane with the annular breach that control valve is put except connecting
Outside, also connected with the cavity of bottom, the part in high pressure fuel at plane enters fuel feed hole upwardly through annular breach, separately
A part reaches down at nozzle and is applied to plunger lower end；When magnetic valve no power, armature and armature shaft are accordingly resetting
In the presence of spring, ball sealer is pushed against on the conical surface at fuel-displaced dip hatch upper port, fuel-displaced dip hatch is closed, now,
High pressure fuel into fuel feed hole will be acted on metering valve block upper surface, so that metering valve block is against on step surface, made
Occurs gap between metering valve block and fuel-displaced metering valve, high pressure fuel can just be entered in control chamber by dip hatch, make control chamber
Interior formation high pressure, now, because high pressure fuel also acts against plunger lower end simultaneously, therefore plunger upper and lower ends fuel pressure is flat
Weighing apparatus, plunger just in the presence of plunger return spring and gravity, is against on the spray orifice of nozzle, and nozzle is closed；Work as solenoid valves
When, armature and armature shaft are risen to upper body, and the high pressure fuel that ball sealer top is lost in support, fuel-displaced dip hatch will will be sealed
High pressure fuel in the upward jack-up of ball, control chamber will and outwards be released by dip hatch and fuel-displaced dip hatch, control chamber internal pressure
Power declines therewith, now, and the fuel pressure for acting on plunger lower end plays a leading role, and plunger is just by upward jack-up, and nozzle is opened；
Because the draining speed of dip hatch is less than during the draining speed of fuel-displaced dip hatch, draining, the fuel pressure in control chamber begins
It is more than the fuel pressure above metering valve block eventually, metering valve block will be by upward jack-up, so as to annular groove be closed, outside combustion
Oil be cannot be introduced between metering valve block and fuel-displaced metering valve, it is ensured that the fuel oil in control chamber can quickly be released；By preceding
The introduction in face is as can be seen that the metering valve block in control valve is individual components, and size is smaller, lighter weight, its dexterity of action
Preferably, the dexterity of action of control valve can be effectively improved, and control valve can be isolated from the outside by metering valve block, Neng Gouyou
Effect improves the accuracy and rapidity of draining process.
The method have the benefit that：A kind of electric-controlled fuel injector control valve is proposed, the control valve flexible movements
Property preferably, draining accuracy of action and rapidity are all preferable.
Brief description of the drawings
The structural representation of Fig. 1, present invention when being connected with other peripheral structures；
Fig. 2, the schematic enlarged-scale view for controlling valve position；
The corresponding title of the mark of each in figure is respectively：Fuel-displaced metering valve 1, fuel-displaced dip hatch 1-1, fuel feed hole 1-2, ring
Connected in star 1-3, metering valve block 2, dip hatch 2-1, control valve pocket 3, annular breach 3-1, by plane and oil injector body inwall institute shape
Into duct 3-2, oil injector body 4, magnetic valve 5, ball sealer 6, plunger 7, plunger return spring 8, in-line A, return line
B。
Embodiment
A kind of electric-controlled fuel injector control valve, its structure is：The electric-controlled fuel injector control valve by fuel-displaced metering valve 1,
Metering valve block 2 and control valve pocket 3 are constituted；
It is provided with fuel-displaced dip hatch 1-1 and fuel feed hole 1-2, the fuel-displaced lower surface of metering valve 1 and sets in the fuel-displaced metering valve 1
It is equipped with annular groove 1-3；The fuel-displaced dip hatch 1-1 and annular groove 1-3 is coaxial with fuel-displaced metering valve 1；The fuel-displaced meter
The fuel-displaced metering valve 1 of metering-orifice 1-1 insertions, fuel-displaced dip hatch 1-1 upper port is the conical surface, fuel-displaced dip hatch 1-1 lower port diameter
Less than annular groove 1-3 internal diameters；The fuel feed hole 1-2 be located at fuel-displaced dip hatch 1-1 side, fuel feed hole 1-2 input port with
The lower surface connection of fuel-displaced metering valve 1, the input port is located at annular groove 1-3 outside, fuel feed hole 1-2 delivery outlet and ring
Connected in star 1-3 bottoms are connected；
It is coaxially arranged with the metering valve block 2 under the conditions of dip hatch 2-1, uniform pressure, dip hatch 2-1 draining speed
Less than fuel-displaced dip hatch 1-1 draining speed；
The control valve pocket 3 is to be provided with annular breach 3-1 on tubular structure body, the outer wall of control valve pocket 3 upper end, is controlled
Plane is provided with the side wall of valve pocket 3, the plane connects the annular breach 3-1 and control valve pocket 3 lower surface, controls valve pocket
3 endoporus sequentially forms installation cavity and plunger cavity from top to bottom, and the internal diameter of installation cavity is more than plunger cavity internal diameter, installation cavity and plunger
The junction of chamber forms step surface, and the internal diameter of installation cavity is matched with measuring the external diameter of valve block 2；The axial length of installation cavity is more than meter
Measure the axial length of valve block 2；
The upper surface of the control valve pocket 3 is contacted with the lower surface of fuel-displaced metering valve 1, control valve pocket 3 and fuel-displaced metering valve 1
Contact site between the input port and annular groove 1-3, input port and annular groove 1-3 are mutually isolated, input port with
Annular breach 3-1 connections；The metering valve block 2 is arranged in installation cavity, and metering valve block 2 can slide axially along installation cavity, measure
Hole 2-1 upper port is relative with fuel-displaced dip hatch 1-1 lower port seat, and dip hatch 2-1 lower port connects with the plunger cavity
It is logical；When the metering upper surface of valve block 2 is contacted with the fuel-displaced lower surface of metering valve 1, the measured upper surface of valve block 2 envelopes of annular groove 1-3
Close；When the metering lower surface of valve block 2 is contacted with the step surface, there is gap between metering valve block 2 and fuel-displaced metering valve 1.
Claims (1)
1. a kind of electric-controlled fuel injector control valve, it is characterised in that：The electric-controlled fuel injector control valve is by fuel-displaced metering valve
(1), metering valve block (2) and control valve pocket (3) composition；
Fuel-displaced dip hatch (1-1) and fuel feed hole (1-2), fuel-displaced metering valve (1) lower surface are provided with the fuel-displaced metering valve (1)
On be provided with annular groove (1-3)；The fuel-displaced dip hatch (1-1) and annular groove (1-3) are same with fuel-displaced metering valve (1)
Axle；The fuel-displaced metering valve of fuel-displaced dip hatch (1-1) insertion (1), the upper port of fuel-displaced dip hatch (1-1) is the conical surface, fuel-displaced meter
The lower port diameter of metering-orifice (1-1) is less than annular groove (1-3) internal diameter；The fuel feed hole (1-2) is located at fuel-displaced dip hatch (1-1)
Side, the input port of fuel feed hole (1-2) connects with the lower surface of fuel-displaced metering valve (1), and the input port is located at annular groove
The outside of (1-3), the delivery outlet of fuel feed hole (1-2) is connected with annular groove (1-3) bottom；
It is coaxially arranged with the metering valve block (2) under the conditions of dip hatch (2-1), uniform pressure, the draining speed of dip hatch (2-1)
Rate is less than the draining speed of fuel-displaced dip hatch (1-1)；
The control valve pocket (3) is to be provided with annular breach (3-1) on tubular structure body, the outer wall for controlling valve pocket (3) upper end, is controlled
Plane is provided with the side wall of valve pocket (3) processed, the plane connects the annular breach (3-1) and control valve pocket (3) lower surface,
The endoporus of control valve pocket (3) sequentially forms installation cavity and plunger cavity from top to bottom, and the internal diameter of installation cavity is more than plunger cavity internal diameter, peace
The junction formation step surface behaveing affectedly with plunger cavity, the internal diameter of installation cavity is matched with the external diameter of metering valve block (2)；The axle of installation cavity
It is more than the axial length of metering valve block (2) to length；
The upper surface of the control valve pocket (3) is contacted with the lower surface of fuel-displaced metering valve (1), is controlled valve pocket (3) and is gone out oil measurement
The contact site of valve (1) is between the input port and annular groove (1-3), and input port and annular groove (1-3) are mutually isolated,
Input port is connected with annular breach (3-1)；The metering valve block (2) is arranged in installation cavity, and metering valve block (2) can be along installation cavity
Slide axially, the upper port of dip hatch (2-1) is relative with the lower port seat of fuel-displaced dip hatch (1-1), under dip hatch (2-1)
Port is connected with the plunger cavity；When metering valve block (2) upper surface is contacted with fuel-displaced metering valve (1) lower surface, annular groove
(1-3) is measured valve block (2) upper end face closure；When metering valve block (2) lower surface is contacted with the step surface, valve block is measured
(2) there is gap between fuel-displaced metering valve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509077.5A CN107061092A (en) | 2017-06-28 | 2017-06-28 | Electric-controlled fuel injector control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509077.5A CN107061092A (en) | 2017-06-28 | 2017-06-28 | Electric-controlled fuel injector control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107061092A true CN107061092A (en) | 2017-08-18 |
Family
ID=59613557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710509077.5A Pending CN107061092A (en) | 2017-06-28 | 2017-06-28 | Electric-controlled fuel injector control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107061092A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412653A (en) * | 2018-03-30 | 2018-08-17 | 中国重汽集团重庆燃油喷射系统有限公司 | A kind of common-rail injector |
| CN111120167B (en) * | 2020-03-17 | 2024-02-27 | 重油高科电控燃油喷射系统有限公司 | Metering valve for electric control fuel injector and electric control fuel injector |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3942497A (en) * | 1973-11-16 | 1976-03-09 | Robert Bosch Gmbh | Fuel injection system |
| US5335852A (en) * | 1993-01-28 | 1994-08-09 | Cummins Engine Company, Inc. | Lubrication oil controlled unit injector |
| JP2011208554A (en) * | 2010-03-29 | 2011-10-20 | Denso Corp | Fuel injection device |
| GB2488929A (en) * | 2012-03-20 | 2012-09-12 | Vilis Ivars Lietuvietis | Low inertia fuel pressure actuated inward opening direct injector |
| DE102012210625A1 (en) * | 2012-06-22 | 2013-12-24 | Robert Bosch Gmbh | Switching valve for common-rail fuel injector, has sealing sleeve that is supported at baffle plate, and is displaceable to compensate for tolerances with respect to baffle plate in radial direction |
| CN104074652A (en) * | 2014-06-30 | 2014-10-01 | 福建省莆田市中涵机动力有限公司 | Split control valve of common rail oil injector |
| DE102014201065A1 (en) * | 2014-01-22 | 2015-07-23 | Robert Bosch Gmbh | Valve for metering fluid |
| CN204610114U (en) * | 2015-05-19 | 2015-09-02 | 中国重汽集团重庆燃油喷射系统有限公司 | Without static leakage oil sprayer |
| JP2016050564A (en) * | 2014-09-02 | 2016-04-11 | 株式会社デンソー | Fuel injection valve |
| CN106677941A (en) * | 2017-01-18 | 2017-05-17 | 哈尔滨工程大学 | Dual-channel oil feeding long needle valve hole plate type electronic controlled fuel injector |
| CN206874418U (en) * | 2017-06-28 | 2018-01-12 | 中国重汽集团重庆燃油喷射系统有限公司 | Electric-controlled fuel injector control valve |
-
2017
- 2017-06-28 CN CN201710509077.5A patent/CN107061092A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3942497A (en) * | 1973-11-16 | 1976-03-09 | Robert Bosch Gmbh | Fuel injection system |
| US5335852A (en) * | 1993-01-28 | 1994-08-09 | Cummins Engine Company, Inc. | Lubrication oil controlled unit injector |
| JP2011208554A (en) * | 2010-03-29 | 2011-10-20 | Denso Corp | Fuel injection device |
| GB2488929A (en) * | 2012-03-20 | 2012-09-12 | Vilis Ivars Lietuvietis | Low inertia fuel pressure actuated inward opening direct injector |
| DE102012210625A1 (en) * | 2012-06-22 | 2013-12-24 | Robert Bosch Gmbh | Switching valve for common-rail fuel injector, has sealing sleeve that is supported at baffle plate, and is displaceable to compensate for tolerances with respect to baffle plate in radial direction |
| DE102014201065A1 (en) * | 2014-01-22 | 2015-07-23 | Robert Bosch Gmbh | Valve for metering fluid |
| CN104074652A (en) * | 2014-06-30 | 2014-10-01 | 福建省莆田市中涵机动力有限公司 | Split control valve of common rail oil injector |
| JP2016050564A (en) * | 2014-09-02 | 2016-04-11 | 株式会社デンソー | Fuel injection valve |
| CN204610114U (en) * | 2015-05-19 | 2015-09-02 | 中国重汽集团重庆燃油喷射系统有限公司 | Without static leakage oil sprayer |
| CN106677941A (en) * | 2017-01-18 | 2017-05-17 | 哈尔滨工程大学 | Dual-channel oil feeding long needle valve hole plate type electronic controlled fuel injector |
| CN206874418U (en) * | 2017-06-28 | 2018-01-12 | 中国重汽集团重庆燃油喷射系统有限公司 | Electric-controlled fuel injector control valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412653A (en) * | 2018-03-30 | 2018-08-17 | 中国重汽集团重庆燃油喷射系统有限公司 | A kind of common-rail injector |
| CN108412653B (en) * | 2018-03-30 | 2023-11-03 | 重油高科电控燃油喷射系统(重庆)有限公司 | Common rail fuel injector |
| CN111120167B (en) * | 2020-03-17 | 2024-02-27 | 重油高科电控燃油喷射系统有限公司 | Metering valve for electric control fuel injector and electric control fuel injector |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170818 |