CN102996310B - Method for measuring armature travel of oil injector assembly - Google Patents
Method for measuring armature travel of oil injector assembly Download PDFInfo
- Publication number
- CN102996310B CN102996310B CN201210511029.7A CN201210511029A CN102996310B CN 102996310 B CN102996310 B CN 102996310B CN 201210511029 A CN201210511029 A CN 201210511029A CN 102996310 B CN102996310 B CN 102996310B
- Authority
- CN
- China
- Prior art keywords
- armature
- inductance
- electromagnet
- value
- limit
- 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.)
- Active
Links
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a method for measuring the armature travel of an oil injector assembly. The armature travel measuring method comprises the following steps: determining two motion limiting positions of a motion range of a combination of an armature and a valve core, wherein one of the two motion limiting positions is standard zero point, and the combination of the armature and the valve core is controlled to move in the motion range unidirectionally; selecting n motion positions of the combination of the armature and the valve core in a motion process, and carrying out induction value measurement and displacement value measurement of relative standard zero point; and obtaining an induction-displacement relationship function of an electromagnet and a control valve couple piece, after installing the other parts of a high pressure common rail fuel injector in place, measuring the corresponding induction value, then using the obtained induction-displacement relationship function to calculate an armature travel of the high pressure common rail fuel injector. The method for measuring the armature travel provided by the invention can effectively measure the armature travel of the oil injector assembly, and the measurement result has good repeatability and reproducibility.
Description
Technical field
The present invention relates to the armature travel method of measurement of injector assembly, be specifically related to for measuring the method for the armature travel of high pressure common rail injector assembly.
Background technique
Injector assembly is one of vitals in diesel fuel injection system, the performance of diesel engine and exhaust index are had to important impact, along with the raising of national emission request, the application of high-pressure common rail technology, common rail system oil sprayer has become the focus of diesel fuel injection system technical field research.The structure of high pressure common rail injector is mainly by electromagnet, control valve couple, pass in and out oily restricting orifice, control piston couple, pressure adjusting spring, the formations such as oil nozzle couple, the assembly relation of electromagnet and control valve couple wherein, see Fig. 1, control valve couple comprises armature 1, spool 2 and control valve seat 3, armature 1 is contained in control valve seat 3 after combining with spool 2, between electromagnet 4 and control valve seat 3, grommet 5 is housed, spring 6 is housed in electromagnet 4, spring 6 the other ends are connected with armature 1, during assembling, electromagnet 4 and grommet 5 compactings, the effect of spring 6 can move up and down armature 1 and the assemblying body of spool 2 within the specific limits, this range of movement 7 is the spacing of two limit of sports record positions of armature 1, described two limit of sports record positions are respectively the positions of armature 1 armature 1 while moving to electromagnet 4 compacting, the position of armature 1 when armature 1 moves to control valve seat 3 compacting.The working principle of high pressure common rail injector is mainly to coordinate throttle orifice to realize the control to needle-valve open and close by control valve, thereby realize the control to fuel injection quantity, injection timing and even fuel injection characteristic, the use of high pressure common rail injector, the power character that can improve diesel engine also reduces oil consumption and the discharge of diesel engine effectively.At present, the armature travel in injector assembly control valve couple is a research point of high pressure common rail injector technical field, because armature travel is still a unknowable parameter.In the assembly process of high pressure common rail injector assembly, adopt traditional dial indicator to measure the size of related components, then select grommet and tighten the very tight cap of electromagnetism, in this assembly process, because electromagnet, grommet, control valve seat parts produce distortion after tightening, and amount of deformation is stochastic variable, make the armature travel of injector assembly unknowable, and the armature travel of injector assembly directly have influence on the injection characteristics of injector assembly.
Summary of the invention
The applicant improves for above-mentioned shortcoming of the prior art, and a kind of armature travel method of measurement of injector assembly is provided, and it can effectively measure the armature travel of injector assembly.
Technological scheme of the present invention is as follows:
The armature travel method of measurement of injector assembly, it comprises following steps:
A. determine two limit of sports record positions of armature and the assemblying body of spool: the bottom to the assemblying body of armature and spool applies active force, assurance armature and electromagnet compacting, now the residing spatial position of compaction state lower armature is the first limit of sports record position; The assemblying body of controlling armature and spool is repositioned to and control valve seat compacting, now the residing spatial position of compaction state lower armature is the second limit of sports record position, and the spacing of the first limit of sports record position and the second limit of sports record position is the range of movement of the assemblying body of armature and spool;
B. making a limit position in described two limit of sports record positions is benchmark zero point, utilizes inductance measuring meter, from the inductance value at the wiring terminal measuring basis dead-center position place of electromagnet;
C. control assemblying body unidirectional motion in range of movement of armature and spool, in described unidirectional motion process, choose n movement position of armature, utilize inductance measuring meter, from the wiring terminal of electromagnet, the inductance value at described n movement position place is measured, the relative displacement at a described n movement position and described benchmark zero point is measured simultaneously, and record described survey data, i.e. n shift value and n corresponding inductance value;
D. analyze and process the data that record in C step, by n shift value and n corresponding inductance value, can obtain inductance-displacement relation function of electromagnet and described control valve couple;
E. after high pressure common rail injector general assembly completes, utilize inductance measuring meter, wiring terminal inductance measuring value from electromagnet, by the electromagnet of this value contrast D step acquisition and inductance-displacement relation function of described control valve couple, extrapolate the armature travel of the injector assembly after having assembled.
Its further technological scheme is:
In described A step, the amount of force that the bottom of the assemblying body of armature and spool is applied is 80N～120N.
In described B step, C step and E step, while utilizing inductance measuring meter inductance measuring value, the ambient temperature of measurement is 20 ℃～30 ℃.
In described B step, C step and E step, while utilizing inductance measuring meter inductance measuring value, measure and be actuated to voltage 0.1V～1KV, measuring frequency is 0～10KHz.
In described C step, n gets 3～15.
Technique effect of the present invention:
The present invention is by the assemblying body of armature and spool, a plurality of movement positions between electromagnet and control valve seat carry out the measurement of inductance value and relative displacement value, thereby calculate inductance-displacement relation function of electromagnet and control valve couple, by this relation, finally can extrapolate the armature travel of high pressure common rail injector assembly, and the measurement result obtaining by method of measurement of the present invention have good repeatability of measurement and reproducibility.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of electromagnet and control valve couple in high pressure common rail injector.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
Fig. 1 is the assembling schematic diagram of electromagnet 4 and control valve couple in high pressure common rail injector, described control valve couple comprises armature 1, spool 2 and control valve seat 3, armature 1 is contained in control valve seat 3 after combining with spool 2, between electromagnet 4 and control valve seat 3, grommet 5 is housed, spring 6 is housed in electromagnet 4, spring 6 the other ends are connected with armature 1, during assembling, electromagnet 4 and grommet 5 compactings, the effect of spring 6 can move up and down armature 1 and the assemblying body of spool 2 within the specific limits, this range of movement 7 is the spacing of two limit of sports record positions of armature 1, described two limit of sports record positions are respectively the positions of armature 1 armature 1 while moving to electromagnet 4 compacting, the position of armature 1 when armature 1 moves to control valve seat 3 compacting, method of measurement of the present invention comprises following steps:
A. determine two limit of sports record positions of armature 1 and the assemblying body of spool 2: to the bottom of armature 1 and the assemblying body of spool 2, applying size is the active force of 80N～120N, guarantee armature 1 and electromagnet 4 compactings, now the residing spatial position of compaction state lower armature 1 is the first limit of sports record position; Controlling armature 1 is repositioned to and control valve seat 3 compactings with the assemblying body of spool 2, now the residing spatial position of compaction state lower armature 1 is the second limit of sports record position, and the spacing of the first limit of sports record position and the second limit of sports record position is the range of movement 7 of the assemblying body of armature 1 and spool 2;
B. making a limit position in described two limit of sports record positions is benchmark zero point, utilizes inductance measuring meter, from the inductance value under the wiring terminal measuring basis dead-center position of electromagnet 4;
C. control the assemblying body of armature 1 and spool 2 at the interior unidirectional motion of range of movement 7, in described unidirectional motion process, choose n movement position of armature 1, utilize inductance measuring meter, from the wiring terminal of electromagnet 4, the inductance value at described n movement position place is measured, the relative displacement at a described n movement position and described benchmark zero point is measured simultaneously, and record described survey data, i.e. n shift value and n corresponding inductance value;
D. analyze and process the data that record in C step, by n shift value and n corresponding inductance value, can obtain inductance-displacement relation function of electromagnet 4 and described control valve couple;
E. after high pressure common rail injector general assembly completes, utilize inductance measuring meter, wiring terminal inductance measuring value from electromagnet 4, by the electromagnet 4 of this value contrast D step acquisition and inductance-displacement relation function of described control valve couple, extrapolate the armature travel of the injector assembly after having assembled.
Particularly, in described B step, C step and E step, while utilizing inductance measuring meter inductance measuring value, the ambient temperature of measurement is 20 ℃～30 ℃, measures and is actuated to voltage 0.1V～1KV, and measuring frequency is 0～10KHz;
In the step C, control the assemblying body of armature 1 and spool 2 at the interior unidirectional motion of range of movement 7, can be from described the first limit of sports record position to described the second limit of sports record position motion, also can reversing motion, n movement position choosing armature 1 in described unidirectional motion process, n gets 3～15.
By described C step, can obtain inductance-displacement relation function of electromagnet 4 and described control valve couple, each movement position in a described n movement position can be considered the armature travel of oil sprayer with respect to the shift value at described benchmark zero point, in E step, after other component of high pressure common rail injector are all in place, recycling inductance measuring meter is from the wiring terminal inductance measuring value of electromagnet 4, then inductance-displacement relation the function that utilizes described C step to obtain, can extrapolate the armature travel of high pressure common rail injector assembly, and measurement result has good repeatability of measurement and reproducibility.
More than describing is explanation of the invention, is not the restriction to invention, and limited range of the present invention, referring to claim, within protection scope of the present invention, can be done any type of modification.
Claims (5)
1. the armature travel method of measurement of injector assembly, is characterized in that, comprises following steps:
A. determine two limit of sports record positions of the assemblying body of armature (1) and spool (2): to armature (1) and the bottom of the assemblying body of spool (2), apply active force, guarantee armature (1) and electromagnet (4) compacting, now the residing spatial position of compaction state lower armature (1) is the first limit of sports record position; Controlling armature (1) is repositioned to and control valve seat (3) compacting with the assemblying body of spool (2), now the residing spatial position of compaction state lower armature (1) is the second limit of sports record position, and the spacing of the first limit of sports record position and the second limit of sports record position is the range of movement (7) of the assemblying body of armature (1) and spool (2);
B. making a limit position in described two limit of sports record positions is benchmark zero point, utilizes inductance measuring meter, from the inductance value under the wiring terminal measuring basis dead-center position of electromagnet (4);
C. control assemblying body unidirectional motion in range of movement (7) of armature (1) and spool (2), in described unidirectional motion process, choose n movement position of armature (1), utilize inductance measuring meter, from the wiring terminal of electromagnet (4), the inductance value at described n movement position place is measured, the relative displacement at a described n movement position and described benchmark zero point is measured simultaneously, and record described survey data, i.e. n shift value and n corresponding inductance value;
D. analyze and process the data that record in C step, by n shift value and n corresponding inductance value, can obtain inductance-displacement relation function of electromagnet (4) and described control valve couple;
E. after high pressure common rail injector general assembly completes, utilize inductance measuring meter, wiring terminal inductance measuring value from electromagnet (4), by the electromagnet (4) of this value contrast D step acquisition and inductance-displacement relation function of described control valve couple, extrapolate the armature travel of the injector assembly after having assembled.
2. by the armature travel method of measurement of injector assembly claimed in claim 1, it is characterized in that: in described A step, the amount of force that the bottom of the assemblying body of armature (1) and spool (2) is applied is 80N～120N.
3. by the armature travel method of measurement of injector assembly claimed in claim 1, it is characterized in that: in described B step, C step and E step, while utilizing inductance measuring meter inductance measuring value, the ambient temperature of measurement is 20 ℃～30 ℃.
4. by the armature travel method of measurement of injector assembly claimed in claim 1, it is characterized in that: in described B step, C step and E step, while utilizing inductance measuring meter inductance measuring value, measure and be actuated to voltage 0.1V～1KV, measuring frequency is 0～10KHz.
5. by the armature travel method of measurement of injector assembly claimed in claim 1, it is characterized in that: in described C step, n gets 3～15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210511029.7A CN102996310B (en) | 2012-12-04 | 2012-12-04 | Method for measuring armature travel of oil injector assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210511029.7A CN102996310B (en) | 2012-12-04 | 2012-12-04 | Method for measuring armature travel of oil injector assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102996310A CN102996310A (en) | 2013-03-27 |
| CN102996310B true CN102996310B (en) | 2014-12-03 |
Family
ID=47925321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210511029.7A Active CN102996310B (en) | 2012-12-04 | 2012-12-04 | Method for measuring armature travel of oil injector assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102996310B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757253A (en) * | 2018-05-31 | 2018-11-06 | 广西玉柴机器股份有限公司 | A kind of judgement fuel injector coherence method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216661B (en) * | 2013-03-29 | 2015-05-27 | 北京控制工程研究所 | Non-contact debugging and measuring method of electric valve |
| CN103850851B (en) * | 2014-01-26 | 2017-04-12 | 北京博润宏达科技发展有限公司 | Method and system for detecting dynamic lift range of gag bit of common-rail oil injector |
| CN108716443A (en) * | 2018-04-09 | 2018-10-30 | 江苏伟博智能装备科技有限公司 | A kind of in-situ detection method and device of common-rail injector armature lift |
| CN109599247B (en) * | 2018-12-11 | 2020-11-03 | 大连海事大学 | Displacement self-detection switch electromagnet |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3843138A1 (en) * | 1988-12-22 | 1990-06-28 | Bosch Gmbh Robert | METHOD OF CONTROLLING AND DETECTING THE MOVEMENT OF AN ARMATURE OF AN ELECTROMAGNETIC SWITCHING DEVICE |
| KR100398005B1 (en) * | 2001-05-07 | 2003-09-19 | 현대자동차주식회사 | Needle lift estimation system of common-rail injector |
| DE102007031552A1 (en) * | 2007-07-06 | 2009-01-08 | Robert Bosch Gmbh | Method for determining a position of an armature in a solenoid valve and device for operating a solenoid valve with an armature |
| CN102182597B (en) * | 2011-03-29 | 2013-10-02 | 南京航空航天大学 | High revolving speed fuel oil magnetic valve and method for measuring closing and starting points thereof |
| CN102519337B (en) * | 2012-01-06 | 2014-07-16 | 宁波金海电子有限公司 | Relay armature travel detection device and method |
-
2012
- 2012-12-04 CN CN201210511029.7A patent/CN102996310B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757253A (en) * | 2018-05-31 | 2018-11-06 | 广西玉柴机器股份有限公司 | A kind of judgement fuel injector coherence method |
| CN108757253B (en) * | 2018-05-31 | 2021-02-23 | 广西玉柴机器股份有限公司 | Method for judging consistency of oil injectors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102996310A (en) | 2013-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102996310B (en) | Method for measuring armature travel of oil injector assembly | |
| CN102027221B (en) | Method for controlling injection valve, fuel injection system, and internal combustion engine | |
| US8973893B2 (en) | Method and device for determining the actual start of injection of a piezo fuel injection valve | |
| CN103016231B (en) | Flow measuring method of restriction orifice in high-pressure common rail oil injector | |
| CN103429877B (en) | The method of the force rate example in the nozzle needle asking for direct powered piezoelectric injector | |
| AU2004302180B2 (en) | Systems and methods for operating an electromagnetic actuator | |
| Dongiovanni et al. | Accurate modelling of an injector for common rail systems | |
| CN103216370B (en) | Fuel injector | |
| US20190005291A1 (en) | Capacitive fingerprint sensor | |
| CN103403329A (en) | Method for determining a property of a fuel | |
| CN102428261A (en) | Method for the operation of a fuel injection valve in an internal combustion engine, and control device for an internal combustion engine | |
| CN103270279A (en) | Method for determining the opening point in time of a fuel injector | |
| CN103403326A (en) | Injection device | |
| CN102297065B (en) | Oil sprayer with closing time deviation compensation | |
| CN103994006A (en) | Fuel injector needle valve response time measuring system and measuring method | |
| CN104769271B (en) | Actuator | |
| CN102135023B (en) | Method for controlling an engine valve of an internal combustion engine | |
| Yang et al. | Investigation on online perception method of gas injection characteristics for the high-pressure natural gas direct injection engine | |
| Yan et al. | Research of the Giant Magnetostrictive Fule Injector | |
| CN203925763U (en) | The update the system of a kind of injector opening time, fuel injection pulsewidth | |
| CN102588179A (en) | Test system for lift of air-assisting atomizing oil sprayer | |
| CN111894781B (en) | Test method for judging maximum lift of needle valve | |
| Skiba et al. | Dosing performance of piezo injectors and sensorless closed-loop controlled solenoid injectors for gasoline direct injection | |
| CN104728011B (en) | Pressure measuring device comprising oil spraying nozzle with pressure chamber | |
| CN104121127B (en) | The defining method of fuel oil injector amount compensate for reference operating mode point |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170718 Address after: 214063 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee after: China FAW Group Corporation Address before: 214063 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee before: Wuxi Oil Pump Nozzle Institute of First Automobile Works |