CN103321788A - Hall type linear electric EGR (Exhaust Gas Recirculation) valve - Google Patents
Hall type linear electric EGR (Exhaust Gas Recirculation) valve Download PDFInfo
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- CN103321788A CN103321788A CN2013103104648A CN201310310464A CN103321788A CN 103321788 A CN103321788 A CN 103321788A CN 2013103104648 A CN2013103104648 A CN 2013103104648A CN 201310310464 A CN201310310464 A CN 201310310464A CN 103321788 A CN103321788 A CN 103321788A
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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 Hall type linear electric EGR (Exhaust Gas Recirculation) valve comprising an outer shell and a gland assembled at the upper end of the outer shell, wherein the outer shell is internally provided with a coil assembly, a uniform iron and a centre rod, the uniform iron and the centre rod are coaxially arranged at the center of the coil assembly, the top end of the centre rod is in butt joint with the bottom end of the uniform iron, and a Hall type control mechanism for controlling voltages at two ends of the coil assembly is arranged above the outer shell; the control mechanism comprises a shell fixedly connected to the top end of the outer shell, a sliding rod assembly is assembled in the shell, magnetic steel is embedded in the sliding rod assembly, and the bottom end of the sliding rod assembly is in butt joint with the top end of the uniform iron; and the top end of the shell is provided with a Hall chip, and the voltage output end of the Hall chip is respectively connected with two ends of the coil assembly. The Hall type control mechanism of the Hall type linear electric EGR valve is a non-contact type sensor, linear voltage is output through the change of a magnetic field, the sensitivity is high, the precision of relevant parts is lowered, and the service life is prolonged; meanwhile, the cost of the linear electric valve is reduced.
Description
Technical field
The present invention relates to the engine exhaust emission recirculating system, particularly a kind of electronic EGR valve.
Background technique
The EGR valve is mainly used in regulating the flow of control EGR gas in engine exhaust-gas recirculating system (egr system), electronic EGR valve is by the aperture size of inside DC MOTOR CONTROL suction port in the morning, thereby adjusting exhaust gas flow, return cylinder after making waste gas and fresh air mixing by a certain percentage and carry out recirculation, with reduction combustor inner cylinder temperature and velocity of combustion, thereby further reduce NO
XDischarge amount.For pneumatic EGR valve, electronic EGR valve has the advantages that speed of response is fast, operation is more stable, and electronic EGR valve can also solve the difficult problem that some vehicle does not have vacuum source, therefore uses comparatively extensive.
Electronic EGR valve generally includes the valve seat assembly, by the valve seat lining center-pole is installed in the valve seat assembly, the upper end of valve seat assembly is connected with shell, be provided with coil assembly in the shell, the coil assembly inner chamber is provided with even iron by even iron guide sleeve, the two ends up and down of even iron are respectively arranged with magnetic sheet and following magnetic sheet, and the shell top compresses coil assembly and last magnetic sheet by gland; Even iron is close on the center-pole top.The center-pole middle part is fitted with the center-pole end cap, is provided with the return spring be used to the center-pole that resets between center-pole end cap and the following magnetic sheet.When electronic EGR valve is worked, apply voltage at the coil assembly two ends, coil gets electric, produces downward magnetic field, and even iron drives center-pole and moves downward under the effect in magnetic field, and return spring is compressed, thereby realizes the action of valve; When the dead electricity of coil assembly two ends, center-pole just resets under the effect of return spring.Yet existing electronic EGR valve can't correctly be judged the aperture of valve in course of action, and the stability of valve center-pole in course of action.In the actual moving process, can be by the voltage that applies to the coil assembly two ends of control, thus the aperture of control valve, so the outside of valve also needs to arrange the device of control voltage change, this just causes electronic EGR valve to have deficiencies such as volume is big, expensive.
Summary of the invention
The technical problem that the present invention solves provide a kind of cheap, volume is less and the linearity electronic EGR valve preferably.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
Hall-type linear electrical EGR valve, comprise shell and the gland equipped with the shell upper end, be provided with coil assembly, even iron and center-pole in the shell, even iron and the coaxial center that is arranged on coil assembly of center-pole, the bottom phase apical grafting of the top of center-pole and even iron, described shell top is provided with the Hall-type control mechanism for control coil assembly both end voltage;
Described control mechanism comprises the housing that is fixedly connected on the shell top, be fitted with the slide bar assembly by the slide bar axle sleeve that is fixedly installed on the inner walls in the housing, described slide bar assembly is embedded with magnet steel, the bottom of slide bar assembly and the even iron top phase apical grafting that stretches out gland; The top of housing is provided with the Hall chip for induction slide bar assembly displacement amount, and the voltage output end of Hall chip is connected with the two ends of coil assembly respectively.
Improvement of the present invention is: the middle part of described housing is provided with an end and is fixedly connected on that shell interlayer, the other end are connected slide bar assembly top, the little spring that resets of the slide bar assembly that is used for resetting.
Owing to adopted above technological scheme, the invention technological progress is:
The present invention is provided with the Hall-type control mechanism in electronic EGR valve, the voltage that is used for control coil assembly two ends, thereby realize the aperture of control valve, because the Hall-type control mechanism is noncontacting proximity sensor, by changes of magnetic field output linear voltage, sensitivity is higher, has reduced the precision of correlated parts, has prolonged long service life; Also reduced simultaneously the cost of linear electrical valve.
Description of drawings
Fig. 1 is overall structure schematic representation of the present invention;
Fig. 2 is the schematic representation of Hall-type control mechanism of the present invention.
Wherein: 1, valve seat assembly, 2, the valve seat lining, 3, center-pole, 4, slide bar assembly, 5, the slide bar axle sleeve, 6, magnetic sheet down, 7, return spring, 8, the center-pole end cap, 9, even iron, 10, go up magnetic sheet, 11, even iron guide sleeve, 12, housing, 13, coil assembly, 14, gland, 15, Hall chip, 16, shell, 17, little spring resets.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is further elaborated.
A kind of Hall-type linear electrical EGR valve, its structure as shown in Figure 1, comprise valve seat assembly 1, by valve seat lining 2 center-pole 3 is installed in the valve seat assembly 1, the upper end of valve seat assembly 1 is connected with shell 16, is provided with coil assembly 13 in the shell, coil assembly 13 inner chambers are provided with even iron 9 by even iron guide sleeve 11, the two ends up and down of even iron 9 are respectively arranged with magnetic sheet 10 and following magnetic sheet 6, and the shell top is provided with gland 14, and gland 14 will go up magnetic sheet 10 and coil assembly 13 compresses; The bottom of even iron is close on the center-pole top, i.e. the dark side end face of even iron.The center-pole middle part is fitted with center-pole end cap 8, is provided with the return spring 7 be used to the center-pole that resets between center-pole end cap 8 and the following magnetic sheet 6.Shell 16 tops are provided with the Hall-type control mechanism for control coil assembly 13 both end voltage.
The concrete structure of Hall-type control mechanism as shown in Figure 2, comprise the housing 12 that is fixedly connected on shell 16 tops, be set with slide bar axle sleeve 5 on the inner walls, be fitted with slide bar assembly 4 in the slide bar axle sleeve 5, be embedded with magnet steel in the slide bar assembly 4, the bottom of slide bar assembly and the even iron top phase apical grafting that stretches out gland 14.The top of housing 12 is provided with Hall chip 15, is used for the displacement amount of induction slide bar assembly 4, the further displacement of inspection center's bar; The voltage output end of Hall chip 15 is connected with the two ends of coil assembly 13 respectively.The middle part of housing is provided with the little spring 17 that resets, and is used for resetting slide bar assembly 4, and an end of the little spring 17 that resets is fixedly connected on the shell interlayer, and the other end is connected slide bar assembly top.
The operating principle of Hall-type control mechanism is: the slide bar assembly can be when being subjected to downward active force, and the effect that overcomes the little spring that resets moves downward, and after losing external force, resets under the effect of the little spring that resets.The magnet steel of setting-in in the Hall chip that the top arranges and the slide bar assembly, just make this control mechanism have all characteristics of Hall transducer: when the slide bar assembly moves down, be embedded in the variation that the magnet steel of slide bar assembly inside just produces the magnetic field power, make the sensor output voltage value be the linear changing relation.
Among the present invention, valve seat assembly 1, valve seat lining 2 and center-pole 3 have formed the waste gas circulation air flue of valve.On valve seat assembly 1, housing 12 is closed up by gland 14 and is fixed on the shell shell 16, has formed the main body of valve by screw and spacers.Center-pole 3 passes through fixedly return spring 7 of center-pole end cap 8, center-pole 3 apical support are spared iron 9 dark side end faces, the slide bar assembly bottom that can move up and down in one shallow side end face of even iron 9 and the housing 12 fits together, and has formed the moving person of valve with even iron guide sleeve 11.Following magnetic sheet 6 and butterfly pad support coils assembly 13, last magnetic sheet 10 is pushed down coil assembly 13 downwards, upwards support housing 12.Above part combines and has formed complete linear electrical EGR valve.
Motion principle of the present invention is as follows:
6 coil assemblies 13 around full copper wire of last magnetic sheet 10 and following magnetic sheet are tightly fixed, and have formed the magnetic field space of given shape.When coil assembly 13 was not switched on as yet, whole space did not have magnetic field, and center-pole 3 bottoms are compressed on the valve seat lining 2 by return spring 7; When coil assembly 13 1 energisings, whole space is with regard to the cloth full field, produce magnetic force, the magnetic force direction is downward always, overcoming return spring 7 and other mechanical resistance moves downward even iron 9, drive slide bar assembly 4, center-pole 3 and other correlated parts by even iron 9 and move downward, return spring 7 is in compressive state, and the little spring 17 that resets then is in extended state.This moment, Hall chip was by being arranged on the displacement amount of the magnet steel induction slide bar assembly in the slide bar assembly, and will determine to be applied to the magnitude of voltage at coil assembly two ends according to displacement amount, when the Hall chip feedback voltage no longer changed, valve just was in state of equilibrium, and particular location is determined by the feedback voltage value; After feedback voltage was less than certain certain value or outage, center-pole 3 was just retightened on valve seat lining 2 by return spring 7, and the slide bar assembly then resets under the effect of the little spring that resets.
Linear control process of the present invention is as follows:
When the magnetic field space shape is determined, coil assembly 13 1 regularly, magnetic force raises with the rising of input voltage value.When coil assembly 13 was not also switched on, whole valve was in the initial balance: center-pole 3 bottoms tightly are fixed on the valve seat lining 2 by return spring 7, and this moment, gas channel was closed, as shown in Figure 1.When coil assembly 13 1 energisings, specific magnetic field space will produce magnetic field and form magnetic force, initial balance is just broken, magnetic force just overcomes return spring 7 and the even iron 9 of other resistance promotion moves downward, even iron 9 drives slide bar assembly 4, center-pole 3 and other correlated parts and moves downward, return spring 7 is in compressive state, and the little spring 17 that resets then is in extended state.When magnitude of voltage no longer changed, magnetic force also just no longer changed, and this moment, magnetic force just was in another new balance with the mutual mechanical resistance of return spring 7 and other part, and center-pole 3 just is fixed on a certain position.In the process that valve is opened, the stroke of valve changes with the variation of magnitude of voltage, and within the specific limits, magnitude of voltage is more big, and stroke is just more big.Regulating winding assembly 13 power supply voltages can make center-pole 3 reach balance in arbitrary position, and center-pole 3 can be determined by the sensor feedback magnitude of voltage in the distance size (being the stroke of valve) of arbitrary reposition and initial position.So this electronic EGR valve can realize that arbitrary aperture is controlled, i.e. so-called linearity control.After regulating winding assembly 13 power supply voltages reached certain certain value, center-pole 3 just moved to maximum position, increased power supply voltage this moment again, and center-pole 3 positions also no longer change.After voltage was less than certain certain value or outage, center-pole 3 was just retightened on valve seat lining 2 by return spring 7, and valve recovers closing state again, and the slide bar assembly then resets under the effect of the little spring that resets.
When the Hall chip feedback voltage was V0, valve was in the closed position; When feedback voltage during greater than V0 and less than Vmax, valve is in a certain aperture, and the aperture size is determined by the feedback voltage value; When feedback voltage was Vmax, valve was in full open position.
Claims (2)
1. Hall-type linear electrical EGR valve, comprise shell (16) and the gland (14) equipped with the shell upper end, be provided with coil assembly (13), even iron (9) and center-pole (3) in the shell, even iron (9) and the coaxial center that is arranged on coil assembly (13) of center-pole (3), the bottom phase apical grafting of the top of center-pole (3) and even iron (9) is characterized in that: described shell top is provided with the Hall-type control mechanism for control coil assembly (13) both end voltage;
Described control mechanism comprises the housing (12) that is fixedly connected on shell (16) top, be fitted with slide bar assembly (4) by the slide bar axle sleeve (5) that is fixedly installed on the inner walls in the housing, described slide bar assembly (4) is embedded with magnet steel, the bottom of slide bar assembly and the even iron top phase apical grafting that stretches out gland (14); The top of housing (12) is provided with the Hall chip (15) for induction slide bar assembly (4) displacement amount, and the voltage output end of Hall chip (15) is connected with the two ends of coil assembly (13) respectively.
2. Hall-type linear electrical EGR valve according to claim 1 is characterized in that: the middle part of described housing is provided with an end and is fixedly connected on that shell interlayer, the other end are connected slide bar assembly top, the little spring that resets (17) of the slide bar assembly (4) that is used for resetting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103104648A CN103321788A (en) | 2013-07-23 | 2013-07-23 | Hall type linear electric EGR (Exhaust Gas Recirculation) valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103104648A CN103321788A (en) | 2013-07-23 | 2013-07-23 | Hall type linear electric EGR (Exhaust Gas Recirculation) valve |
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| CN103321788A true CN103321788A (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013103104648A Pending CN103321788A (en) | 2013-07-23 | 2013-07-23 | Hall type linear electric EGR (Exhaust Gas Recirculation) valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486200A (en) * | 2019-09-11 | 2019-11-22 | 潍柴西港新能源动力有限公司 | Improved new-type EGR valve and its control method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5494255A (en) * | 1994-01-12 | 1996-02-27 | Robertshaw Controls Company | Solenoid activated exhaust gas recirculation valve |
| US5593132A (en) * | 1995-06-30 | 1997-01-14 | Siemens Electric Limited | Electromagnetic actuator arrangement for engine control valve |
| JP2002250468A (en) * | 2001-02-26 | 2002-09-06 | Denso Corp | Electromagnetic control valve provided with lift sensor |
| US20030089873A1 (en) * | 2001-11-14 | 2003-05-15 | Russell Modien | Emission control valve having a robust solenoid actuator |
| CN101865647A (en) * | 2010-05-31 | 2010-10-20 | 合肥邦立电子股份有限公司 | Noncontact-type EGR (Exhaust Gas Recirculation) valve position sensor |
| CN201715995U (en) * | 2010-05-31 | 2011-01-19 | 合肥邦立电子股份有限公司 | Non-contact waste gas recirculation valve position sensor |
| CN102564472A (en) * | 2012-01-10 | 2012-07-11 | 合肥邦立电子股份有限公司 | High-accuracy non-contact waste gas recirculation valve position sensor |
| CN202370700U (en) * | 2011-12-31 | 2012-08-08 | 温州市日益机车部件有限公司 | Exhaust gas recirculation (EGR) valve for vehicles |
| CN102705113A (en) * | 2012-06-27 | 2012-10-03 | 无锡隆盛科技股份有限公司 | Linear electric EGR (Exhaust Gas Recirculation) valve |
| CN203347945U (en) * | 2013-07-23 | 2013-12-18 | 无锡隆盛科技股份有限公司 | Hall-type linear power-driven EGR (exhaust gas recirculation) valve |
-
2013
- 2013-07-23 CN CN2013103104648A patent/CN103321788A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5494255A (en) * | 1994-01-12 | 1996-02-27 | Robertshaw Controls Company | Solenoid activated exhaust gas recirculation valve |
| US5593132A (en) * | 1995-06-30 | 1997-01-14 | Siemens Electric Limited | Electromagnetic actuator arrangement for engine control valve |
| CN1193408A (en) * | 1995-06-30 | 1998-09-16 | 西门子电气有限公司 | Electromagnetic actuator arrangement for engine control valve |
| JP2002250468A (en) * | 2001-02-26 | 2002-09-06 | Denso Corp | Electromagnetic control valve provided with lift sensor |
| US20030089873A1 (en) * | 2001-11-14 | 2003-05-15 | Russell Modien | Emission control valve having a robust solenoid actuator |
| CN101865647A (en) * | 2010-05-31 | 2010-10-20 | 合肥邦立电子股份有限公司 | Noncontact-type EGR (Exhaust Gas Recirculation) valve position sensor |
| CN201715995U (en) * | 2010-05-31 | 2011-01-19 | 合肥邦立电子股份有限公司 | Non-contact waste gas recirculation valve position sensor |
| CN202370700U (en) * | 2011-12-31 | 2012-08-08 | 温州市日益机车部件有限公司 | Exhaust gas recirculation (EGR) valve for vehicles |
| CN102564472A (en) * | 2012-01-10 | 2012-07-11 | 合肥邦立电子股份有限公司 | High-accuracy non-contact waste gas recirculation valve position sensor |
| CN102705113A (en) * | 2012-06-27 | 2012-10-03 | 无锡隆盛科技股份有限公司 | Linear electric EGR (Exhaust Gas Recirculation) valve |
| CN203347945U (en) * | 2013-07-23 | 2013-12-18 | 无锡隆盛科技股份有限公司 | Hall-type linear power-driven EGR (exhaust gas recirculation) valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486200A (en) * | 2019-09-11 | 2019-11-22 | 潍柴西港新能源动力有限公司 | Improved new-type EGR valve and its control method |
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Application publication date: 20130925 |