CN101418759A - Stroke sensor for advance device of dispensing pump with low-voltage terminal fixed at one end - Google Patents
Stroke sensor for advance device of dispensing pump with low-voltage terminal fixed at one end Download PDFInfo
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- CN101418759A CN101418759A CNA2008101945012A CN200810194501A CN101418759A CN 101418759 A CN101418759 A CN 101418759A CN A2008101945012 A CNA2008101945012 A CN A2008101945012A CN 200810194501 A CN200810194501 A CN 200810194501A CN 101418759 A CN101418759 A CN 101418759A
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- hall element
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Abstract
The invention relates to a low pressure end structure distribution pump advancer stroke sensor, which is used for accurately regulating the oil supply advance angle and the oil supply amount of axial plunger distribution pump of diesel engine. The sensor comprises a sensor body (1) which is mounted on a pump body of the distribution pump adjacent to the piston low pressure oil chamber of the advancer, One end of the sensor body (1) far from the piston low pressure oil chamber of the advance is provided with a blind hole as a Hall component installing chamber (1.1), the inside of the Hall component installing chamber (1.1) is provided with a Hall component (7) and a programmer (6) which is fixedly connected with the outside of the Hall component (7), the outside of the programmer (6) is mounted with a compensation magnetic steel (3), one end of the sensor body (1) adjacent to the piston low pressure oil chamber of the advancer is provided with a concave step blind hole (1.2), and the inside of the step blind hole (1.2) is provided with a sensing component (2) which is on the same axes with the piston shaft of the advancer. The advancer piston stroke sensor has wide linearity range, small volume, high precision, and easy control.
Description
(1) technical field
The present invention relates to a kind of proportioning pump, be specifically related to a kind of proportioning pump advancing device stroke sensor.Especially for diesel engine axial plunger proportioning pump fuel supply advance angle and fuel delivery are regulated accurately.
(2) background technique
The formulation of light-duty vehicle Abgasgesetz makes the axial plunger proportioning pump of original employing mechanical governor be difficult to satisfy diesel engine Europe 3 emission standards.This adopts electron controls technology that proportioning pump fuel supply advance angle and fuel delivery are regulated accurately with regard to needs.
Existing axial plunger proportioning pump advance angle Principles of Regulation as shown in Figure 1.Proportioning pump fuel supply advance angle amount is regulated by advancing device piston 11, high-speed electromagnetic valve 16, stroke sensor 14 and return spring 10.Stroke sensor 14 is installed on the pump housing 9, and advancing device piston 11 left sides are high-voltage oil cavities 12, and the right is a low pressure oil pocket 13.When high-speed electromagnetic valve 16 is opened, high-voltage oil cavity 12 intermediate fuel oils flow into low pressure oil pocket 13 by passage 15,17, high-voltage oil cavity 12 intermediate fuel oil pressure reduce, return spring 10 is moved to the left advancing device piston 8, pin 18 clockwise rotates roller base 13 on the advancing device piston 8, and fuel supply advance angle just reduces.The fuel supply advance angle reduction is measured back input electronic controller by stroke sensor 14.Otherwise high-speed electromagnetic valve 16 is closed, high-voltage oil cavity 12 intermediate fuel oil pressure increase, thereby promote advancing device piston 8, the thrust that overcomes return spring 10 moves right, roller base 13 is rotated counterclockwise, fuel supply advance angle is increased, by the synergy of stroke sensor 14 and high-speed electromagnetic valve 16 and electronic controller, just can accurately play the control advance angle, thereby satisfy the diesel emission requirement by the diesel engine condition requirement.
So advancing device piston stroke sensor is one of critical component in the said mechanism, it is good at 0～10mm scope internal linear degree to require, and control easily.
Japan zexel company adopts differential transformer to make sensor.The advance angle variable quantity is then measured by measuring the corner time difference by Japan electric coating company.(Xu Jialong compiles People's Transportation Press 2004 referring to " diesel electric-controlled oil spout technology ")
It is relatively simple for structure to adopt general Hall element directly to measure the advancing device stroke, but linearity scope is narrow, 1～2mm only, and axial plunger proportioning pump advancing device piston stroke 10mm internal linear degree error requirements is no more than 1%, so do not satisfy requirement.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, the proportioning pump advancing device stroke sensor of a kind of linearity scope than broad is provided.
The object of the present invention is achieved like this: a kind of advance device of dispensing pump with low-voltage terminal fixed at one end stroke sensor, it is characterized in that described sensor comprises sensor body, this sensor body is installed on the pump housing of close advancing device piston low pressure oil pocket end of described proportioning pump, end away from advancing device piston low pressure oil pocket of this sensor body is provided with the installation cavity of the Hall element of a blind hole, be provided with Hall element and programmable device in this Hall element installation cavity, this Hall element is fixedlyed connected with described Hall element installation cavity bottom, programmable device is fixedlyed connected with the Hall element outside, the programmable device outside is equipped with the compensation magnet steel, to improve the linear sensor degree.Lead in the programmable device leads to electronic controller and input signal.End at the close advancing device piston low pressure oil pocket of sensor body is provided with another step blind hole, is provided with sense cell in this step blind hole, and this sense cell is coaxial with described advancing device piston axes line.Identical with advancing device piston motion direction.
Advance device of dispensing pump with low-voltage terminal fixed at one end stroke sensor of the present invention is characterized in that described sense cell comprises a magnetic core bar, and this magnetic core bar is a non-magnet_conductible material, and this magnetic core club head is equipped with powerful magnet steel, and this magnetic core bar afterbody is fixed with a connection piece.
When the advancing device piston moves, sense cell moves around in the step blind hole of sensor body, magnetic field changes in the Hall element that is installed in the sensor body thereby make, and makes the signal voltage of generation become strict linear change with the advancing device piston stroke by programmable device.To satisfy the proportioning pump requirement.
Advancing device piston stroke linear sensor degree scope of the present invention is than broad, and volume is little, the precision height, and control is fit to mass production easily.
(4) description of drawings
Fig. 1 is axial plunger proportioning pump advance angle Principles of Regulation figure in the past.
Fig. 2 is for adopting the structural representation of advance device of dispensing pump with low-voltage terminal fixed at one end stroke sensor of the present invention.
Fig. 3 is for adopting the proportioning pump structural representation of low voltage terminal end interposed structure advancing device stroke sensor of the present invention.
The sense cell structural representation that Fig. 4 adopts for the present invention.
Reference character among the figure:
Sense cell 2
Rubber protecting jacket 5
The pump housing 9
Return spring 10
Advancing device piston 11
High-voltage oil cavity 12
High-speed electromagnetic valve 16
Hall element installation cavity 1.1
Step blind hole 1.2
Magnetic core bar 2.1
Powerful magnet steel 2.2
Link 2.3
Bound edge 2.1.1.
Convex shoulder 2.3.1.
(5) embodiment
Referring to Fig. 2～3, the advance device of dispensing pump with low-voltage terminal fixed at one end stroke sensor that the present invention relates to, be installed on the pump housing 9 of proportioning pump advancing device piston low-pressure cavity end, comprise sensor body 1, this sensor body 1 usefulness screw is installed in proportioning pump near on the pump housing 9 of advancing device piston 11 low pressure oil pockets 13 ends, this sensor body is provided with a blind hole as Hall element installation cavity 1.1 away from an end of advancing device piston 11 low pressure oil pockets 13, be provided with Hall element 7 and programmable device 6 in this Hall element installation cavity 1.1, this Hall element 7 is fixedlyed connected with described Hall element installation cavity 1.1 bottoms, programmable device 6 is fixedlyed connected with Hall element 7 outsides, and programmable device 6 outsides are equipped with compensation magnet steel 3.Lead 4 in the programmable device 6 leads to electronic controller, and signal is exported by lead.Be provided with the housing 8 of steel in described sensor body 1 periphery, prevent the influence of external magnetic field sensor performance.Not broken for guaranteeing lead, so be provided with rubber protecting jacket 5 in housing 8 outer ends.End at sensor body 1 close advancing device piston 11 low pressure oil pockets 13 is provided with another step blind hole 1.2, be provided with sense cell 2 in the low pressure oil pocket 13 of this step blind hole 1.2 and advancing device piston 11, these sense cell 2 peripheries are equipped with return spring 10, and return spring 10 is pressed in sense cell 2 on the advancing device piston.This sense cell 2 is coaxial with advancing device piston 11 shaft axiss, and is identical with advancing device piston 11 moving direction.
Referring to Fig. 3, described sense cell 2 comprises a magnetic core bar 2.1, and this magnetic core bar 2.1 is a non-magnet_conductible material, and these magnetic core bar 2.1 heads are equipped with powerful magnet steel 2.2, this brute force magnet steel 2.2 is outside equipped with bound edge 2.1.1, and this bound edge 2.1.1 makes between powerful magnet steel and the magnetic core bar 2.1 and can not become flexible.These magnetic core bar 2.1 afterbodys are fixed with a connection piece 2.3.
Claims (5)
1, a kind of advance device of dispensing pump with low-voltage terminal fixed at one end stroke sensor, it is characterized in that described sensor comprises sensor body (1), this sensor body (1) is installed on the pump housing of close advancing device piston low pressure oil pocket end of described proportioning pump, end away from advancing device piston low pressure oil pocket of this sensor body (1) is provided with a blind hole as Hall element installation cavity (1.1), be provided with Hall element (7) and programmable device (6) in this Hall element installation cavity (1.1), this Hall element (7) is fixedlyed connected with described Hall element installation cavity (1.1) bottom, programmable device (6) is fixedlyed connected with Hall element (7) outside, programmable device (6) outside is equipped with compensation magnet steel (3), end at the close advancing device piston low pressure oil pocket of described sensor body (1) is provided with another step blind hole (1.2), be provided with sense cell (2) in this step blind hole (1.2), this sense cell (2) is coaxial with described advancing device piston axes line.
2, a kind of advance device of dispensing pump with low-voltage terminal fixed at one end stroke sensor according to claim 1, it is characterized in that described sense cell (2) comprises a magnetic core bar (2.1), this magnetic core bar (2.1) is a non-magnet_conductible material, this magnetic core bar (2.1) head is equipped with powerful magnet steel (2.2), and this magnetic core bar (2.1) afterbody is fixed with a connection piece (2.3).
3, a kind of advance device of dispensing pump with low-voltage terminal fixed at one end stroke sensor according to claim 2 is characterized in that described powerful magnet steel (2.2) is outside equipped with bound edge (2.1.1).
4,, it is characterized in that being provided with the housing (8) of steel in described sensor body (1) periphery according to claim 1,2 or 3 described a kind of advance device of dispensing pump with low-voltage terminal fixed at one end stroke sensors.
5, a kind of advance device of dispensing pump with low-voltage terminal fixed at one end stroke sensor according to claim 4 is characterized in that described housing (8) outer end is provided with rubber protecting jacket (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101945012A CN101418759B (en) | 2008-11-17 | 2008-11-17 | Stroke sensor for advance device of dispensing pump with low-voltage terminal fixed at one end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101945012A CN101418759B (en) | 2008-11-17 | 2008-11-17 | Stroke sensor for advance device of dispensing pump with low-voltage terminal fixed at one end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101418759A true CN101418759A (en) | 2009-04-29 |
| CN101418759B CN101418759B (en) | 2010-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101945012A Active CN101418759B (en) | 2008-11-17 | 2008-11-17 | Stroke sensor for advance device of dispensing pump with low-voltage terminal fixed at one end |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545430B (en) * | 2009-05-11 | 2011-05-11 | 福建省莆田市中涵机动力有限公司 | Electric control VE dispensing pump for directly measuring advance angle by Hall sensor |
| CN103174570A (en) * | 2013-03-07 | 2013-06-26 | 江阴林格科技有限公司 | Electronically controlled rotary type oil quantity actuator of dispensing pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172437A (en) * | 1982-04-02 | 1983-10-11 | Toyota Motor Corp | Fuel injection amount control device of diesel engine |
| JPS59215931A (en) * | 1983-05-24 | 1984-12-05 | Diesel Kiki Co Ltd | Advance angle control device of fuel injection pump |
| DE19629947A1 (en) * | 1996-07-25 | 1998-01-29 | Opel Adam Ag | Fuel injection pump with a spray adjustment piston which serves to adjust the start of injection |
| CN1731097A (en) * | 2005-07-01 | 2006-02-08 | 孙钢 | Hall linear displacement transducer without lead |
| CN101206125A (en) * | 2007-07-30 | 2008-06-25 | 钱高法 | Programmable position sensor |
| CN201297224Y (en) * | 2008-11-17 | 2009-08-26 | 江阴林格科技有限公司 | Distribution pump advancer stroke sensor with low-pressure end configuration structure |
-
2008
- 2008-11-17 CN CN2008101945012A patent/CN101418759B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545430B (en) * | 2009-05-11 | 2011-05-11 | 福建省莆田市中涵机动力有限公司 | Electric control VE dispensing pump for directly measuring advance angle by Hall sensor |
| CN103174570A (en) * | 2013-03-07 | 2013-06-26 | 江阴林格科技有限公司 | Electronically controlled rotary type oil quantity actuator of dispensing pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101418759B (en) | 2010-04-14 |
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