CN108626046A - Fuel injector - Google Patents
Fuel injector Download PDFInfo
- Publication number
- CN108626046A CN108626046A CN201810236019.4A CN201810236019A CN108626046A CN 108626046 A CN108626046 A CN 108626046A CN 201810236019 A CN201810236019 A CN 201810236019A CN 108626046 A CN108626046 A CN 108626046A
- Authority
- CN
- China
- Prior art keywords
- sprayer
- case
- fuel injector
- plug connector
- cable
- 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 38
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 description 11
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 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
- 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
-
- 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
- F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
Abstract
The present invention relates to a kind of fuel injector (10), the actuator (20) with the electric current driving being arranged in case of sprayer (11) and with the plug connector (25) for being used for actuator (20) described at least indirect electrical contact.
Description
Technical field
The present invention relates to a kind of fuel injectors.
Background technology
A kind of fuel injector of the type as known to 10 2,011 090 009 A1 of document DE of applicant.It is suitable for
Injecting fuel into the fuel injector in the combustion chamber of internal combustion engine in the case of sprayer of fuel injector there is electricity to drive
Dynamic actuator.Such as the actuator including electromagnetic coil or piezoelectric element is suitable at least indirectly manipulation nozzle needle, the spray
Mouth needle is suitable for discharge or injection of the closed construction on case of sprayer is open.In known fuel injector, in plug
The electrical contact of actuator is carried out in the region of connector, which surrounds the subregion of case of sprayer.Plug connects
The construction of junctor with plastics part injection encapsulated case of sprayer by being carried out.It is especially disposed with plug in plug connector
Connection sheet (Steckeranschlussfahne), plug connector or fuel injector can be with machines by these plug connection sheets
The bunch of cables of motor-car contacts.In addition, the plug connector being known from the state of the art is characterized in that plug connector typically has
There is specific plug connection profile for the complementary elements Mechanical Contact with bunch of cables, the plug connects profile by vehicle manufacture
Person is predetermined.In addition, in order to which injection encapsulated constructs plug connector in other words, plug connection sheet is designed to insertion piece, determines
Position must extremely accurate carry out, especially the contact site for example to avoid plug connection sheet with usually to be constructed with form of wires
Between, lead to damage in the join domain of actuator or pre- impaired.It is also contemplated that herein, the injection molding of case of sprayer
Technological parameter in encapsulating process is only considered in terms of the load of insertion piece (plug connection sheet) and to the requirement of Shooting Technique
Compromise.It is lastly noted that typically for needing to carry independent structure for each engine manufacturer or motor vehicle producer
The fuel injector for the plug connector made.Accordingly, for each fuel injector must individually, due to plug connector and
Cause the pressure injection-moulded tool (Spritzgusswerkzeug) of higher cost.
Invention content
The fuel injector of the present invention has the following advantages that that is, described fuel injector can optimally manufacture injector
Realized simultaneously in the case of shell and plug connector respectively with motor vehicle is specific or engine is specifically installed optimization
Match and realize the specific simple match of user.
This is achieved according to the present invention：Plug connector and case of sprayer be configured to it is independent, be separated from each other arrangement
And the component being connected with each other by cable or wire.
This of case of sprayer and plug connector separately fabricated is enabled to using with the pressure compared with low-complexity
Injection moulding tool is for manufacturing plug connector.In addition, being passed through by the arranged apart of plug connector and by plug connector
By the connection of cable and case of sprayer, the infield of plug connector and case of sprayer can be made to be arranged at interval
In engine cylinder body, enabling realize fuel injector especially in thermally important installation relation particularly well.In addition, energy
It is enough to be arranged with the same of the specific different plug connectors of user in the form of assembling block system (Baukastensystem)
A case of sprayer.
Pressure injection-moulded tool only needs to consider the shape for the plug connector to be constructed, and need not consider unlike the prior art
Thus case of sprayer obtains the possibility from optimization pressure injection moulding tool from the point of view of pressure injection-moulded technical standpoint, have in quality
And the attendant advantages in terms of the simple-arranged of insertion piece (plug connection sheet) or the like.
In addition, the impossible pressure injection-moulded ginseng in the case where being molded on case of sprayer for example may be implemented
Number, the component being arranged in case of sprayer may be because of thermal stress existing for the situation.Case of sprayer itself can also with compared with
Big configuration degree of freedom is realized.In addition, by plug connector with injection shell it is decoupled, can reduce on motor vehicle bunch of cables
Pairing plug plug interface vibration and shake load.
Implement the advantageously expanded configuration of fuel injector of the present invention in a preferred embodiment.
For the installation space in case of sprayer in engine cylinder body in terms of cable guide conducting wire guiding in other words
Region in need structure space as small as possible, it is advantageous to cable and case of sprayer away from case of sprayer extremely
It is connected on the side of few injection opening.As a result, since conducting wire is far from combustion chamber placement, it can also improve the thermal stress of cable.
The solution setting optimized in terms of the installation space of needs, in the region that cable is connect with case of sprayer
In the plane that the longitudinal axis of case of sprayer extends, outer profile of the cable without departing from case of sprayer.It is sending out as a result,
Receiving opening need not be made to become larger in order to arrange cable in motivation cylinder body.But it is empty for the installation needed for fuel injector
Between be only dependent upon the geometric dimension of case of sprayer cross section in other words.
The arrangement setting optimized in terms of bending load and cable guide, cable is in the region being connect with case of sprayer
The longitudinal axis of case of sprayer is parallel to arrange.
It is preferred that plug connector is configured to pressure injection-moulded part, wherein the material of the plug connector passes through injection encapsulated
Part surrounds plug connection sheet and cable or wire.
In order to limit arrange that plug connector for locking-type plug connector, can be arranged in other words, plug connector
With at least one stationary plane or retaining element for being fixed on plug connector on load-carrying unit.Load-carrying unit for example may be used
To be the element not connect with engine cylinder body, to make plug connector far from shake load or vibrational loading as much as possible.
It is preferred that heat proof cable flexible is used for connection plug connector and case of sprayer.Here, the length of cable can
With the correspondence infield of the fuel injector that is matched with respectively on engine cylinder body case of sprayer in other words.
The further advantages, features, and details of the present invention are by the subsequent descriptions and with reference to the accompanying drawings to preferred embodiment
It arrives.
Description of the drawings
Fig. 1 shows the side view of the local cutting for the fuel injector being made of plug connector and case of sprayer.
Specific implementation mode
Fuel injector 10 shown in FIG. 1 is suitable for injecting fuel into unshowned combustion chambers of internal combustion engines.So
Without limiting to ground, the internal combustion engine of internal combustion engine especially Self-lighting.
It is addedly mentioned to, fuel injector 10 can also be configured to the combustion chamber for fuel gas to be sprayed into internal combustion engine
In.To which fuel injector 10 should not be limited to use liquid fuel the present invention in other words.
Fuel injector 10 has the case of sprayer 11 with longitudinal axis 12.In the groove 13 of case of sprayer 11,
It is reciprocally disposed with nozzle needle 15 in a way known.In nozzle needle 15 from closed position shown in figure
When lifting, being released for injecting fuel at least one of combustion chambers of internal combustion engines injection opening 16 on case of sprayer 11
It puts.Illustratively delivered fuel into the region of fuel joint short tube 18 on the side of at least one injection opening 16
Fuel injector 10 is in other words in case of sprayer 11.
In case of sprayer 11, fuel injector 10, which has, only symbolically shows to be in electromagnetic coil or piezoelectric element shape
The actuator 20 of formula, the actuator are arranged with the effect connection of valve components 21 equally only shown in simplification.Valve components 21 are controls
The component part of valve processed and the movement suitable at least influencing nozzle needle 15 indirectly.In order to manipulate actuator 20, it is necessary that,
The actuator is set to be connect with service voltage, usually battery tension is connect in other words with the vehicle-mounted voltage of vehicle.For this purpose, using inserting
Head connector 25, is configured to casting and is made of plastics.
Substantially being in block-like plug connector 25 has connecting side 26, the plug connector 25 in the region of the connecting side
It can be connect with the unshowned pairing plug of motor vehicle bunch of cables.It is disposed with as insertion piece in the inside of plug connector 25
Plug connection sheet 28, the plug connection sheet are locally surrounded by the plastic material of plug connector 25.Plug connection sheet 28 is logical
Cross electric lead 29 and for guiding the flexible cable 30 of electric current connect, the cable make plug connector 25 and case of sprayer 11 and
Actuator 20 connects.For this purpose, in the region of the cross section 32 vertical relative to longitudinal axis 12 of case of sprayer 11, cable 30
It is connect with case of sprayer 11.In particular, can be seen with reference to the accompanying drawings, the link position 33 between cable 30 and case of sprayer 11
Region in, cable 30 in the cross section without departing from case of sprayer 11 in the plane that longitudinal axis 12 extends, but
It is arranged within the profile of case of sprayer 11.
Plug connector 25 is for example with flat supporting surface 35, by the supporting surface, plug connector 25 can with not
The load-carrying unit connection shown, mode are：Plug connector 25 is for example entirely placed on corresponding load-carrying unit.For
This, the other retaining element not being shown specifically in addition can be adapted for plug connector 25 and load-carrying unit force closure and/
Or clamp sealed connection.
It can be retrofited in a manner of various and change fuel injector 10 as described above in other words, without departing from the present invention
Design.
Claims (7)
1. fuel injector (10) has the actuator (20) of the electric current being arranged in case of sprayer (11) driving and has
For the plug connector (25) of actuator (20) described at least indirect electrical contact,
It is characterized in that, the plug connector (25) and the case of sprayer (11) be configured to it is independent, be separated from each other cloth
The component set and be connected with each other by cable (30).
2. fuel injector according to claim 1, which is characterized in that the cable (30) and the case of sprayer
(11) it is connected on the side of at least one injection of the case of sprayer (11) opening (16).
3. fuel injector according to claim 1 or 2, which is characterized in that the company on the case of sprayer (11)
In the plane that the longitudinal axis of the case of sprayer (11) (12) extends in the region of socket part position (33), the cable
(30) without departing from the outer profile of the case of sprayer (11).
4. fuel injector according to claim 3, which is characterized in that the cable (30) with the case of sprayer
(11) longitudinal axis (12) of the case of sprayer (11) is parallel in the region of connecting portion (33) to arrange.
5. fuel injector according to any one of claim 1 to 4, which is characterized in that the plug connector (25)
It is configured to pressure injection-moulded part, wherein the material of the plug connector (25) locally surrounds plug connection sheet by injection encapsulated
(28) and the cable (30) or conducting wire (29).
6. fuel injector according to any one of claim 1 to 5, which is characterized in that the plug connector (25)
With at least one stationary plane (35) or retaining element for being fixed on the plug connector (25) on load-carrying unit.
7. fuel injector according to any one of claim 1 to 6, which is characterized in that the cable (30) is configured to
Flexible cable (30).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017204692.9A DE102017204692A1 (en) | 2017-03-21 | 2017-03-21 | fuel injector |
| DE102017204692.9 | 2017-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108626046A true CN108626046A (en) | 2018-10-09 |
Family
ID=63449926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810236019.4A Pending CN108626046A (en) | 2017-03-21 | 2018-03-21 | Fuel injector |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108626046A (en) |
| DE (1) | DE102017204692A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111416250A (en) * | 2019-01-04 | 2020-07-14 | 罗伯特·博世有限公司 | Device for electrically connecting a control cable to a plurality of injection valves |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5347969A (en) * | 1991-03-23 | 1994-09-20 | Robert Bosch Gmbh | Contact strip for providing common electrical connection of several electrically operated fuel injection valves |
| CN101689719A (en) * | 2007-06-28 | 2010-03-31 | 罗伯特.博世有限公司 | Electrical plug connector as a fuel injector contact for vibration-resistant applications |
| CN101886595A (en) * | 2009-04-03 | 2010-11-17 | 株式会社电装 | Fuel injector and electrical interconnection method thereof with fuel pressure sensor |
| US20110120419A1 (en) * | 2009-11-25 | 2011-05-26 | Wenbin Xu | Universal Fuel Injector System Having Specific Harness Adaptors |
| CN102536563A (en) * | 2010-12-08 | 2012-07-04 | 株式会社电装 | Electrical wiring structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011090009A1 (en) | 2011-12-28 | 2013-07-04 | Robert Bosch Gmbh | Fuel injector e.g. common rail injector of self-ignition type internal-combustion engine, has sealing device with sealing element which indirectly cooperates with alloying element attached to housing and encapsulation portion |
-
2017
- 2017-03-21 DE DE102017204692.9A patent/DE102017204692A1/en not_active Withdrawn
-
2018
- 2018-03-21 CN CN201810236019.4A patent/CN108626046A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5347969A (en) * | 1991-03-23 | 1994-09-20 | Robert Bosch Gmbh | Contact strip for providing common electrical connection of several electrically operated fuel injection valves |
| CN101689719A (en) * | 2007-06-28 | 2010-03-31 | 罗伯特.博世有限公司 | Electrical plug connector as a fuel injector contact for vibration-resistant applications |
| CN101886595A (en) * | 2009-04-03 | 2010-11-17 | 株式会社电装 | Fuel injector and electrical interconnection method thereof with fuel pressure sensor |
| US20110120419A1 (en) * | 2009-11-25 | 2011-05-26 | Wenbin Xu | Universal Fuel Injector System Having Specific Harness Adaptors |
| CN102536563A (en) * | 2010-12-08 | 2012-07-04 | 株式会社电装 | Electrical wiring structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111416250A (en) * | 2019-01-04 | 2020-07-14 | 罗伯特·博世有限公司 | Device for electrically connecting a control cable to a plurality of injection valves |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017204692A1 (en) | 2018-09-27 |
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Legal Events
| 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181009 |