CN102705113A - Linear electric EGR (Exhaust Gas Recirculation) valve - Google Patents
Linear electric EGR (Exhaust Gas Recirculation) valve Download PDFInfo
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- CN102705113A CN102705113A CN2012102167787A CN201210216778A CN102705113A CN 102705113 A CN102705113 A CN 102705113A CN 2012102167787 A CN2012102167787 A CN 2012102167787A CN 201210216778 A CN201210216778 A CN 201210216778A CN 102705113 A CN102705113 A CN 102705113A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses a linear electric EGR (Exhaust Gas Recirculation) valve. The linear electric EGR valve comprises a valve seat, a centre rod, a valve plug and a valve seat lining, wherein a drive mechanism for driving the centre rod to move up and down is arranged above the valve seat; the drive mechanism comprises an enclosure arranged above the valve seat; the centre rod extends to the enclosure along the centre line of the enclosure; the upper and lower ends of the enclosure are oppositely provided with an upper magnetic plate and a lower magnetic plate; a coil assembly connected with a controllable power supply is arranged between the upper magnetic plate and the lower magnetic plate; an iron block fixed on the centre rod is arranged inside the enclosure; an iron block guide sleeve is arranged between the iron block and the coil assembly; the iron block and the centre rod are both arranged in the iron block guide sleeve and capable of moving up and down along the iron block guide sleeve. The linear electric EGR valve is used for precisely controlling waste gas flow rate, so that not only can the valve plug be fully opened and fully closed, but also different positions of the valve plug inside the waste gas chamber can be controlled, that is, the linear control of the opening of the valve plug is achieved.
Description
Technical field
The present invention relates to engine exhaust emission control technique field, the electronic EGR valve in particularly a kind of engine exhaust emission gas recirculation system (egr system).
Background technique
The EGR valve plays the control action that the EGR gas flow is regulated in vehicle engine exhaust gas recirculation system (egr system).The seventies, EGR at first was used for petrol engine reduction nitrogen oxygen, and was used for diesel engine because of same purpose subsequently.The later stage seventies and the beginning of the eighties,, EGR is progressively disappeared on petrol engine because of popularizing of three-way catalyst.The EGR technology was used on petrol engine once again because of reducing the needs of fuel consume and control CO2 emission in 2010.EGR becomes petrol engine and improves one of new technology of fuel economy.The present passenger car 98% of China all is a gasoline car, and the fuel oil consumption is high, and energy dependence on import is on the rise; And it is domestic fewer to the research of high-efficiency gasoline machine; But as an important state basic policy, rules are more and more stricter, based on this energy-conservation in present country; Research and develop this egr system and be used for the purpose that gasoline car reaches energy-conservation reduction oil consumption, to alleviate with the waste situation of oil.
Electrodynamic type EGR valve need be converted into the straight line motion of motor rotatablely moving of valve switch mostly at present; Impel EGR valve suction port switch size; Thereby the adjusting exhaust gas flow makes it and returns cylinder after fresh air mixes and carry out recirculation, is used to reduce the discharge amount of nitrogen oxide.But traditional EGR valve EGR valve in use exists, and slow, noise of response time is big, the relatively poor shortcoming of the linearity of reliability and valve regulated; And volume is bigger, in the pipeline of petrol engine compactness, should not arrange, thereby influence popularizing of EGR valve.
Summary of the invention
The technical problem that the present invention solves provides a kind of reliability height, the higher electrodynamic type EGR valve of valve regulated process neutral line degree.
For solving the problems of the technologies described above, the technological scheme that the present invention taked is following:
Linear electrical EGR valve; Comprise valve seat, center-pole, be arranged on spool that the valve seat suction port is connected with the center-pole lower end, be arranged on the valve seat lining that the valve seat upper end is used for the suit center-pole; The top of said valve seat is provided with and is used to drive the driving mechanism that center-pole moves up and down; Said driving mechanism comprises the casing that is arranged on the valve seat top that is communicated with through the valve seat lining; Center-pole stretches in the casing along the casing center line, and the two ends up and down of casing are relatively set with magnetic sheet and following magnetic sheet, are provided with the coil assembly that is connected with controllable electric power between last magnetic sheet and the following magnetic sheet; Be provided with the even iron that is fixed on the center-pole in the casing, be provided with even iron guide sleeve between even iron and the coil assembly, even iron and center-pole all are arranged in the even iron guide sleeve, and move up and down along even iron guide sleeve.
Improvement of the present invention is: the cross section of said even iron is a H type structure, and the even iron traversing section of H type structure is fixedly connected on the center-pole through cushion block and end cap.
Improvement of the present invention is: the upper-end surface of said casing also is provided with the position transducer assembly, and the position transducer induction rod in the top of said center-pole and the position transducer assembly joins.
Further improvement of the present invention is: also be provided with spring seat between said casing and the valve seat and be arranged on the spring in the spring seat.
Improvement of the present invention also is: be fixedly connected through the disc holder assembly between said casing and the valve seat.
Owing to adopted above technological scheme, institute of the present invention acquisition of technology progress is following:
The present invention is used for exhaust gas flow is carried out precision control, and the response time is fast, noiseless, and reliability is higher.Utilize the coil electricity size of its described driving mechanism to adjust the size of sparing the suffered magnetic force of iron; Center-pole is moved up and down under the drive of even iron; Not only can realize realization standard-sized sheet, the complete shut-down state of spool; Diverse location is controlled in the middle of can also being in the waste gas chamber to spool, promptly realizes the linearity control of spool aperture.Even iron of the present invention is set to H type structure can make even iron and last magnetic sheet have bigger area of contact with following magnetic sheet, and all magnetic force is stronger, and the linearity is good more.The position transducer assembly that casing top is provided with can make the present invention observe the position of center-pole, the i.e. aperture of spool more intuitively.
Description of drawings
The schematic representation of initial position when Fig. 1 closes for EGR valve of the present invention;
The schematic representation of arbitrary position when Fig. 2 opens for EGR valve of the present invention;
Fig. 3 moves to the schematic representation of extreme higher position for EGR valve of the present invention.
Wherein: 1, valve seat, 2, center-pole, 3, the valve seat lining, 4, spring, 5, spring seat, 6, the disc holder assembly; 7, shell, 8, go up magnetic sheet, 9, sensor unit, 10, coil assembly, 11, even iron guide sleeve; 12, even iron, 13, end cap, 14, cushion block, 15, magnetic sheet down, 16, pad.
Embodiment
To combine specific embodiment and accompanying drawing below, the present invention will be further elaborated.
A kind of linear electrical EGR valve comprises valve seat 1, center-pole 2, spool, valve seat lining and driving mechanism.Spool is fixedly connected on the lower end of center-pole, and it is corresponding to be positioned at the suction port place and the suction port of valve; The valve seat lining is provided with on the roof of valve seat; Center-pole is sleeved in the valve seat lining, and driving mechanism is arranged on the top of valve seat, and the upper end portion of center-pole is connected with driving mechanism; Be used under the effect of driving mechanism, making center-pole and spool to move up and down, thereby make the air inlet open of spool valve.
Driving mechanism comprises casing 7 and is arranged on the last magnetic sheet 8 in the casing, following magnetic sheet 15, coil assembly 10, even iron 12 and even iron guide sleeve 11.Casing is fixedly installed on the valve seat top through the disc holder assembly, and the shape of casing is cylindrical.Be communicated with through the valve seat lining between casing and the valve seat, center-pole passes to stretch into along the center line of casing behind the valve seat lining and extend in the casing.
Last magnetic sheet 8 and following magnetic sheet 15 are oppositely arranged on the two ends up and down of casing; The sectional shape of going up magnetic sheet and following magnetic sheet in the present embodiment is L type structure; Form the cavity of placing coil assembly between last magnetic sheet that is oppositely arranged and the following magnetic sheet; Coil assembly promptly is placed in this cavity, and is connected with controllable electric power.
Be provided with the even iron 12 that is fixed on the center-pole in the casing, the cross section of even iron is a H type structure in the present embodiment, and the even iron traversing section of H type structure is fixedly connected on the center-pole through cushion block 14 and end cap 13.Be provided with even iron guide sleeve 11 between even iron and the coil assembly, even iron and center-pole all are arranged in the even iron guide sleeve, and move up and down along even iron guide sleeve.
The upper-end surface of casing also is provided with position transducer assembly 9, and the position transducer induction rod in the top of said center-pole and the position transducer assembly joins.Position transducer is used for the stroke of real-time monitoring center bar, and then the suction port aperture of reactive valve size.
In the present embodiment, valve seat 1, valve seat lining 3 and center-pole 2 have formed the waste gas circulation air flue of valve; Disc holder assembly 6, spring 4, spring seat 5, time magnetic sheet 15, last magnetic sheet 8 and shell 7 have formed the main body of driving mechanism; Center-pole, even iron 12 and even iron guide sleeve 11 have been formed the moving person of driving mechanism; Push down coil assembly 10 downwards, upwards supporting sensor assembly 9.
Working principle of the present invention is described below:
15 coil assemblies 10 around full copper wire of last magnetic sheet 8 and following magnetic sheet are tightly fixed, and have formed the magnetic field space of given shape.When coil assembly 10 was not switched on as yet, whole space did not have magnetic field, and the top of center-pole 2 is fixed on the valve seat 1 by the axle that sensor unit 9 can move up and down tightly, and the spool of center-pole lower end is closed tightly with the suction port of valve.
When coil assembly gets electricly, whole space is with regard to the cloth full field, produces magnetic force, and the magnetic force direction makes progress always, and the pressure that overcomes 9 of sensor units makes center-pole drive other correlated parts and moves upward.
In same magnetic field space, when the hold-in winding assembly was constant, the magnetic force in the magnetic field space can raise along with the rising of input voltage value in the coil assembly.When coil assembly was not switched on, whole valve is in the balance of original state, and was as shown in Figure 1: the top of center-pole tightly is fixed on the valve seat 1, and this moment, gas channel was closed.
Coil assembly gets electric, and coil just produces magnetic field and power, and the balance of original state is just broken, and magnetic force overcomes other resistance moves upward other correlated parts of center-pole drive.When magnitude of voltage was not changing, magnetic force also just no longer changed, and this moment, magnetic force just was in the new balance with other resistance, and center-pole 2 roof anchorage are as shown in Figure 2 in a certain position.In the course of the work, the stroke of center-pole changes with the variation of magnitude of voltage, and within the specific limits, magnitude of voltage is big more, and the stroke of center-pole is just big more.
The power supply voltage of regulating winding assembly can make center-pole 2 reach balance in arbitrary position, and then electronic EGR valve can realize that arbitrary aperture is controlled, promptly so-called linearity control.
After regulating winding assembly power supply voltage reached certain certain value, center-pole 2 tops just move to maximum position, and were as shown in Figure 3.Increase power supply voltage this moment again, the position of center-pole also no longer changes.
Claims (5)
1. linear electrical EGR valve; Comprise valve seat (1), center-pole (2), be arranged on spool that the valve seat suction port is connected with the center-pole lower end, be arranged on the valve seat lining (3) that the valve seat upper end is used for the suit center-pole; The top of said valve seat is provided with and is used to drive the driving mechanism that center-pole moves up and down; It is characterized in that: said driving mechanism comprises the casing (7) that is arranged on the valve seat top that is communicated with through the valve seat lining; Center-pole stretches in the casing along the casing center line, and the two ends up and down of casing are relatively set with magnetic sheet (8) and following magnetic sheet (15), is provided with the coil assembly (10) that is connected with controllable electric power between last magnetic sheet and the following magnetic sheet; Be provided with the even iron (12) that is fixed on the center-pole in the casing, be provided with even iron guide sleeve (11) between even iron and the coil assembly, even iron and center-pole all are arranged in the even iron guide sleeve, and move up and down along even iron guide sleeve.
2. linear electrical EGR valve according to claim 1 is characterized in that: the cross section of said even iron is a H type structure, and the even iron traversing section of H type structure is fixedly connected on the center-pole through cushion block (14) and end cap (13).
3. linear electrical EGR valve according to claim 2 is characterized in that: the upper-end surface of said casing also is provided with position transducer assembly (9), and the position transducer induction rod in the top of said center-pole and the position transducer assembly joins.
4. linear electrical EGR valve according to claim 3 is characterized in that: also be provided with spring seat (5) between said casing and the valve seat and be arranged on the spring (4) in the spring seat.
5. according to each described linear electrical EGR valve of claim 1-4, it is characterized in that: be fixedly connected through the disc holder assembly between said casing and the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102167787A CN102705113A (en) | 2012-06-27 | 2012-06-27 | Linear electric EGR (Exhaust Gas Recirculation) valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102167787A CN102705113A (en) | 2012-06-27 | 2012-06-27 | Linear electric EGR (Exhaust Gas Recirculation) valve |
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| Publication Number | Publication Date |
|---|---|
| CN102705113A true CN102705113A (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102167787A Pending CN102705113A (en) | 2012-06-27 | 2012-06-27 | Linear electric EGR (Exhaust Gas Recirculation) valve |
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| Country | Link |
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| CN (1) | CN102705113A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321788A (en) * | 2013-07-23 | 2013-09-25 | 无锡隆盛科技股份有限公司 | Hall type linear electric EGR (Exhaust Gas Recirculation) valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193408A (en) * | 1995-06-30 | 1998-09-16 | 西门子电气有限公司 | Electromagnetic actuator arrangement for engine control valve |
| US6474320B1 (en) * | 2001-10-05 | 2002-11-05 | Siemens Automotive Inc. | Linear electric EGR valve with damped movement |
| EP1288482A2 (en) * | 2001-08-31 | 2003-03-05 | Delphi Technologies, Inc. | Force-balanced gas control valve |
| US20080168968A1 (en) * | 2007-01-17 | 2008-07-17 | Keith Burnett | Force balanced linear solenoid valves |
| CN201661386U (en) * | 2010-03-30 | 2010-12-01 | 无锡隆盛科技有限公司 | Electric EGR valve of deflection motor |
| CN202611937U (en) * | 2012-06-27 | 2012-12-19 | 无锡隆盛科技股份有限公司 | Linear electric exhaust gas recirculation (EGR) valve |
-
2012
- 2012-06-27 CN CN2012102167787A patent/CN102705113A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193408A (en) * | 1995-06-30 | 1998-09-16 | 西门子电气有限公司 | Electromagnetic actuator arrangement for engine control valve |
| EP1288482A2 (en) * | 2001-08-31 | 2003-03-05 | Delphi Technologies, Inc. | Force-balanced gas control valve |
| US6474320B1 (en) * | 2001-10-05 | 2002-11-05 | Siemens Automotive Inc. | Linear electric EGR valve with damped movement |
| US20080168968A1 (en) * | 2007-01-17 | 2008-07-17 | Keith Burnett | Force balanced linear solenoid valves |
| CN201661386U (en) * | 2010-03-30 | 2010-12-01 | 无锡隆盛科技有限公司 | Electric EGR valve of deflection motor |
| CN202611937U (en) * | 2012-06-27 | 2012-12-19 | 无锡隆盛科技股份有限公司 | Linear electric exhaust gas recirculation (EGR) valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321788A (en) * | 2013-07-23 | 2013-09-25 | 无锡隆盛科技股份有限公司 | Hall type linear electric EGR (Exhaust Gas Recirculation) valve |
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Application publication date: 20121003 |