CN104455678A - Egr valve driving mechanism - Google Patents
Egr valve driving mechanism Download PDFInfo
- Publication number
- CN104455678A CN104455678A CN201410697787.1A CN201410697787A CN104455678A CN 104455678 A CN104455678 A CN 104455678A CN 201410697787 A CN201410697787 A CN 201410697787A CN 104455678 A CN104455678 A CN 104455678A
- Authority
- CN
- China
- Prior art keywords
- egr valve
- fan
- connecting rod
- shaped follower
- driving mechanism
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention provides an EGR valve driving mechanism which is contained in a containing shell. The EGR valve driving mechanism comprises a rocker arm connected with an EGR valve through a bearing, a connecting rod fixedly connected with the rocker arm, and a driving device connected with the connecting rod. The driving device comprises a rotation power output device, a sector driven wheel and a middle transmission mechanism. The rotation power output device is provided with a rotation power output shaft. The sector driven wheel is fixedly connected to the connecting rod, and the central line of the sector driven wheel, the axis of the connecting rod and the axis of the rotation power output shaft are collinear. The middle transmission mechanism is arranged between the rotation power output shaft and the sector driven wheel, and when the rotation power output device operates, the middle transmission mechanism is used for transmitting the rotation of the rotation power output shaft to the sector driven wheel. According to the EGR valve driving mechanism, the sector driven wheel is adopted, and the central line of the sector driven wheel, the axis of the connecting rod and the axis of the rotation power output shaft are collinear, so that the sealing performance of the EGR valve is effectively improved, and the overall structure and control accuracy of the EGR valve are improved.
Description
Technical field
The present invention relates to the technical field that vehicle EGR controls, particularly a kind of EGR valve driving mechanism.
Background technique
Vehicle EGR technology, be that the waste gas that part diesel engine or petrol engine produce is incorporated into inlet end, to participate in in-cylinder combustion, it can effectively reduce in-cylinder combustion temperature, reduces the generation of nitrogen oxides in waste gas.In vehicle EGR technology, EGR valve is used for controlling to enter the exhausted air quantity of engine chamber, and it is driven to realize opening, closing by driving mechanism.The driving mechanism that existing EGR valve open and close controls, adopts gear transmission mechanism usually, by gear transmission mechanism, the transmission of power of power plant is given on the driveshaft be connected with EGR valve, with the movement making driveshaft driving EGR valve have unlatching, close.And traditional gear transmission mechanism, have and adopt planetary gear set, also have and adopt other train of reduction gears, its structural volume is comparatively large, and when EGR valve moves, can produce the radial amplitude of oscillation, sealability is poor, control accuracy is lower.
Summary of the invention
In view of this, the present invention is intended to propose a kind of EGR valve driving mechanism, to improve the sealed type of EGR valve, improves overall structure and the control accuracy of EGR.
For achieving the above object, technological scheme of the present invention is achieved in that
A kind of EGR valve driving mechanism, be housed in accommodating housing, comprise the rocking arm be connected by bearing with EGR valve, the connecting rod be connected with rocking arm, and driving with connecting rod the drive unit be connected, described connecting rod rotates under the driving of drive unit, and because connecting rod and bearing are relative to the eccentric setting of rocking arm, driving EGR valve moves, and described drive unit comprises:
Rotary power output device, has rotational output shaft;
Fan-shaped follower, is fixedly connected on connecting rod, and the axis collinear of the center line of described fan-shaped follower, the axis of connecting rod, rotational output shaft is arranged;
Intermediate transmission mechanism, is arranged between rotational output shaft and fan-shaped follower, and when rotary power output device runs, the rotation of rotational output shaft is passed to fan-shaped follower by described intermediate transmission mechanism.
Further, the central angle of described fan-shaped follower is 160
0~ 210
0.
Further, the central angle of described fan-shaped follower is 180
0.
Further, described rotary power output device is motor.
Further, described connecting rod has the inserted block of rectangle, and described rocking arm is provided with the patchhole inserted for inserted block.
Further, described intermediate transfer mechanism connects the gear pair be arranged between rotational output shaft and fan-shaped follower.
Further, described gear pair comprises the driving gear being set with and being connected on rotational output shaft, the center tooth wheels be connected with a joggle between driving gear and fan-shaped follower.
Further, described fan-shaped follower has internal tooth; Described center tooth wheels and fan-shaped follower internal messing.
Further, described center tooth wheels comprise the first intermediate gear with driving gear outer gearing, coaxially be connected with the first intermediate gear, with the second intermediate gear of fan-shaped follower internal messing, the diameter of the second described intermediate gear is less than the radius of fan-shaped follower.
Further, described accommodating housing comprises the motor housing of being accommodated by rotary power output device, and middle casing that be connected with motor housing, that intermediate transmission mechanism accommodated, is provided with the assembly department installing location for intermediate transmission mechanism in motor housing.
Relative to prior art, EGR valve driving mechanism of the present invention has following advantage:
EGR valve driving mechanism of the present invention, owing to adopting fan-shaped follower, meanwhile, the axis collinear of the center line of fan-shaped follower, the axis of connecting rod, rotational output shaft is arranged, effectively raise the sealability of EGR valve, improve overall structure and the control accuracy of EGR.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the EGR valve driving mechanism structure schematic diagram that the embodiment of the present invention is placed in accommodating housing;
Fig. 2 is the EGR valve driving mechanism structure schematic diagram in Fig. 1 under fan-shaped follower biopsy cavity marker devices;
Fig. 3 is the structural representation under another visual angle of fan-shaped follower in Fig. 1;
Fig. 4 is the overall structure schematic diagram of the accommodating housing of the embodiment of the present invention;
Fig. 5 is the structural representation of electric machine casing in Fig. 4.
Description of reference numerals:
The accommodating housing of 1-, 101-motor housing, 102-middle casing, 103-upper valve body, 104-gear shaft, 2-EGR valve, 201-valve plate, 202-valve rod, 203-joint, 204-spring, 205-connecting through hole, 3-bearing, 4-rocking arm, 5-connecting rod, 501-inserted block, 6-motor, 601-motor shaft, the fan-shaped follower of 7-, 701-inner volume, 702-internal tooth, 801-driving gear, 802-first intermediate gear, 803-second intermediate gear, 9-magnet steel, 10-position transducer.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
The present embodiment relates to a kind of EGR valve driving mechanism, it is housed in accommodating housing 1, as shown in Figure 1, it comprises the Rocker arm 4 be connected by bearing 3 with EGR valve 2, the connecting rod 5 be connected with Rocker arm 4, and drive with connecting rod 5 drive unit be connected, connecting rod 5 rotates under the driving of drive unit, and because connecting rod 5 and bearing 3 are relative to the eccentric setting of Rocker arm 4, and EGR valve 2 is driven to move.
As above in structure, EGR valve 2 can adopt existing structure, can find out in structure as shown in Figure 1, EGR valve 2 comprises valve plate 201, the valve rod 202 be connected with valve plate 201, the joint 203 of the bulk be connected with valve rod 202, valve rod 202 is set with spring 204.Be provided with a connecting through hole 205 in the upper end of joint 203, bearing 3 then setting-in is fixed in this connecting through hole 205.Rocker arm 4 is arranged on the side of joint 203, and it is connected with bearing 3 by not shown stationary axle, the axis of this stationary axle and the non-coincidence setting of axis of connecting rod 5, and namely this structure defines connecting rod 5 and bearing 3 eccentric setting relative to Rocker arm 4.
Based on as above structure, when connecting rod 5 be subject to driving force and with own axes be axle rotate time, it drives Rocker arm 4 to rotate, because Rocker arm 4 is connected with bearing 3 by stationary axle, therefore, the rotation of Rocker arm 4 is ordered about joint 203 and is with ovable valve stem 202 and valve plate 201, along moving axially of valve rod 202, to realize the opening and closing of EGR valve, and the setting of spring 204, then for EGR valve 2 provides an elastic-restoring force.
The present invention is based on as above structure, its design philosophy is the driving device structure driving connecting rod 5 to rotate, and its structure comprises the rotary power output device with rotational output shaft, fan-shaped follower, and intermediate transmission mechanism.Wherein, rotary power output device is as power source, and for whole drive unit provides the driving source of rotation, as in the present embodiment, rotary power output device adopts motor 6, and rotational output shaft is then the motor shaft 601 of motor 6.
Fan-shaped follower 7 is fixed on connecting rod 5, by Fig. 1, shown in Fig. 2 composition graphs 3, the overall gabarit of this fan-shaped follower 7 is fan-shaped, its fan-shaped central angle is 160 ~ 210 degree, as can be 170 degree or 200 degree etc., optimum is 180 degree of the present embodiment, and fan-shaped follower 7 has certain thickness along the axis of connecting rod 5, the fan-shaped follower 7 of side relative to connecting rod 5 has the internal cavities 701 of opening, the circumference of this internal cavities 701 is evenly equipped with internal tooth 702, by internal tooth 702, fan-shaped follower 7 can be realized be connected with the gears meshing of intermediate transmission mechanism as described below.In order to simplify integral layout structure, the axis collinear of the center line of fan-shaped follower 7, the axis of connecting rod 5, motor shaft 601 is arranged, and can improve integral power like this and transmit stability and simplification device structure.In addition, as shown in Figure 3, in order to make fan-shaped follower 7 with can to determine that angle is connected between Rocker arm 4, the inserted block 501 of rectangle is provided with in the end of connecting rod 5, accordingly, Rocker arm 4 is provided with the patchhole inserted for inserted block 501, inserted block 501 is inserted in patchhole, the setting angle between fan-shaped follower 7 and Rocker arm 4 can be guaranteed.
Intermediate transmission mechanism is arranged between rotational output shaft and fan-shaped follower 7, and when rotary power output device runs, the rotation of rotational output shaft is passed to fan-shaped follower 7 by intermediate transmission mechanism.In the present embodiment, intermediate transfer mechanism connects the gear pair be arranged between motor shaft 601 and fan-shaped follower 7.In order to make whole apparatus structure compacter, reduce and taken up space, shown in Fig. 1 composition graphs 2, gear pair in the present embodiment comprises the driving gear 801 being set with and being connected on motor shaft 601, the center tooth wheels be connected with a joggle between driving gear 801 and fan-shaped follower 7, the rotating power of driving gear 801 is mainly passed to fan-shaped follower 7 by engagement system by center tooth wheels, in order to simplify overall structure, reduce difficulty of matching between each gear simultaneously, in the present embodiment, center tooth wheels comprise the first intermediate gear 802 with driving gear 801 outer gearing, coaxially be connected with first intermediate gear 802, be positioned at internal cavities 701 and with the second intermediate gear 803 of fan-shaped follower 7 internal messing, first intermediate gear 802 and the second intermediate gear 803 concentrically line are arranged, and the diameter of the second intermediate gear 803 is less than the radius of fan-shaped follower 7, like this, the coupling requirement to the second intermediate gear 803 and fan-shaped follower 7 can be effectively reduced.
In the present embodiment, as shown in Figure 4, accommodating housing 1 mainly contains three parts and forms, namely for accommodating the motor housing 101 of motor 6, be connected with motor housing 101, for accommodating the middle casing 102 of intermediate transmission mechanism, and for accommodating the upper valve body 103 of part EGR valve 2, the entirety of accommodating housing 1 achieves the location of the present embodiment all parts on car body, it is realizing on the location of intermediate transmission mechanism, the schematic diagram of motor housing 101 as shown in Figure 5 can be found out, the assembly department installing location for intermediate transmission mechanism is provided with in motor housing 101 inside, the assembly department of the present embodiment is gear shaft 104, and the first intermediate gear 802, second intermediate gear 803 is arranged on gear shaft 104, to realize the first intermediate gear 802, the setting of the second intermediate gear 803 in accommodating housing 1.
In addition, in order to meet the accurate control to the EGR valve driving mechanism that the present invention relates to, as shown in Figure 3, magnet steel 9 is connected with at the end of fan-shaped follower 7.As shown in Fig. 1 composition graphs 5, the position transducer 10 that the position of valve plate 201 is fed back is connected with in motor housing 101 above gear shaft 104, in order to improve the working life of feedback accuracy to valve plate 201 position and sensor, position transducer 10 adopts contactless Hall element position sensor.
In use, starting electrical machinery 6, motor 6 drives driving gear 801 to rotate, and then drive center tooth wheels and fan-shaped follower 7 to rotate, when fan-shaped follower 7 drives connecting rod 5 to rotate, due to the effect of Rocker arm 4, joint 203 is made to drive valve plate 201 vertically to move up and down with state shown in Fig. 1, to realize the opening and closing of EGR valve 2.As above structure, due to the existence of backlash in whole gear mechanism engagement transmittance process, and after Long-Time Service, cause backlash to increase the generation of phenomenon because of wearing and tearing, likely cause valve plate 201 run not in place and reduce the sealing of EGR valve, due to the existence of fan-shaped follower 7, fan-shaped follower 7 can by the back lash eliminated between gear of conducting oneself with dignity, to improve sealing, meanwhile, overall structure size of the present invention is less, is convenient to the whole layout be installed on vehicle.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an EGR valve driving mechanism, be housed in accommodating housing (1), comprise the rocking arm (4) be connected by bearing (3) with EGR valve (2), the connecting rod (5) be connected with rocking arm (4), and driving with connecting rod (5) drive unit be connected, described connecting rod (5) rotates under the driving of drive unit, and because connecting rod (5) and bearing (3) are relative to the eccentric setting of rocking arm (4), drive EGR valve (2) mobile, it is characterized in that described drive unit comprises:
Rotary power output device, has rotational output shaft;
Fan-shaped follower (7), is fixedly connected on connecting rod (5), and the axis collinear of the center line of described fan-shaped follower (7), the axis of connecting rod (5), rotational output shaft is arranged;
Intermediate transmission mechanism, is arranged between rotational output shaft and fan-shaped follower (7), and when rotary power output device runs, the rotation of rotational output shaft is passed to fan-shaped follower (7) by described intermediate transmission mechanism.
2. EGR valve driving mechanism according to claim 1, is characterized in that: the central angle of described fan-shaped follower (7) is 160
0~ 210
0.
3. EGR valve driving mechanism according to claim 2, is characterized in that: the central angle of described fan-shaped follower (7) is 180
0.
4. EGR valve driving mechanism according to claim 1, is characterized in that: described rotary power output device is motor (6).
5. EGR valve driving mechanism according to claim 1, is characterized in that: described connecting rod (5) has the inserted block (501) of rectangle, and described rocking arm (4) is provided with the patchhole inserted for inserted block (501).
6. EGR valve driving mechanism according to any one of claim 1 to 5, is characterized in that: described intermediate transfer mechanism is the gear pair that connection is arranged between rotational output shaft and fan-shaped follower (7).
7. EGR valve driving mechanism according to claim 6, it is characterized in that: described gear pair comprises the driving gear (801) being set with and being connected on rotational output shaft, the center tooth wheels be connected with a joggle between driving gear (801) and fan-shaped follower (7).
8. EGR valve driving mechanism according to claim 7, is characterized in that: described fan-shaped follower (7) has internal tooth (702); Described center tooth wheels and fan-shaped follower (7) internal messing.
9. EGR valve driving mechanism according to claim 8, it is characterized in that: described center tooth wheels comprise the first intermediate gear (802) with driving gear (801) outer gearing, coaxially be connected with the first intermediate gear (802), with second intermediate gear (803) of fan-shaped follower (7) internal messing, the diameter of described the second intermediate gear (803) is less than the radius of fan-shaped follower (7).
10. EGR valve driving mechanism according to claim 1, it is characterized in that: described accommodating housing (1) comprises the motor housing (101) of being accommodated by rotary power output device, middle casing (102) that be connected with motor housing (101), that intermediate transmission mechanism accommodated, is provided with the assembly department installing location for intermediate transmission mechanism in motor housing (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697787.1A CN104455678A (en) | 2014-11-28 | 2014-11-28 | Egr valve driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697787.1A CN104455678A (en) | 2014-11-28 | 2014-11-28 | Egr valve driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104455678A true CN104455678A (en) | 2015-03-25 |
Family
ID=52902193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410697787.1A Pending CN104455678A (en) | 2014-11-28 | 2014-11-28 | Egr valve driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104455678A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775944A (en) * | 2015-04-25 | 2015-07-15 | 无锡隆盛科技股份有限公司 | Electric EGR (exhaust gas recirculation) valve |
| CN106907511A (en) * | 2017-05-03 | 2017-06-30 | 天津航天长征火箭制造有限公司 | A kind of liquid quantity control throttling arrangement |
| CN107850238A (en) * | 2015-08-31 | 2018-03-27 | 大陆汽车有限责任公司 | Valve |
| CN108368952A (en) * | 2015-12-07 | 2018-08-03 | 大陆汽车有限责任公司 | Valve |
| CN114439995A (en) * | 2022-01-26 | 2022-05-06 | 中核检修有限公司 | Valve booster |
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| US6102016A (en) * | 1999-02-12 | 2000-08-15 | Eaton Corporation | EGR system and improved actuator therefor |
| US6443135B1 (en) * | 1999-10-05 | 2002-09-03 | Pierburg Aktiengesellschaft | Assembly of a valve unit, a combustion air intake and an exhaust gas recirculation unit for an internal combustion engine |
| CN1641203A (en) * | 2003-10-24 | 2005-07-20 | 库帕-标准汽车（德国）有限责任公司 | Exhaust gas recirculation valve |
| CN202578950U (en) * | 2012-03-16 | 2012-12-05 | 联创汽车电子有限公司 | Electric controlled EGR (Exhaust Gas Recirculation) valve driven by two stages of gears |
| CN202596933U (en) * | 2012-05-21 | 2012-12-12 | 联创汽车电子有限公司 | Electronically controlled EGR (Exhaust Gas Recirculation) valve |
| CN203442281U (en) * | 2013-09-10 | 2014-02-19 | 大陆汽车电子(芜湖)有限公司 | Linear driving device and exhaust recycling control valve |
| CN203702380U (en) * | 2013-12-20 | 2014-07-09 | 联创汽车电子有限公司 | Electric control EGR (Exhaust Gas Recirculation) valve with built-in controller |
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2014
- 2014-11-28 CN CN201410697787.1A patent/CN104455678A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6102016A (en) * | 1999-02-12 | 2000-08-15 | Eaton Corporation | EGR system and improved actuator therefor |
| US6443135B1 (en) * | 1999-10-05 | 2002-09-03 | Pierburg Aktiengesellschaft | Assembly of a valve unit, a combustion air intake and an exhaust gas recirculation unit for an internal combustion engine |
| CN1641203A (en) * | 2003-10-24 | 2005-07-20 | 库帕-标准汽车（德国）有限责任公司 | Exhaust gas recirculation valve |
| CN202578950U (en) * | 2012-03-16 | 2012-12-05 | 联创汽车电子有限公司 | Electric controlled EGR (Exhaust Gas Recirculation) valve driven by two stages of gears |
| CN202596933U (en) * | 2012-05-21 | 2012-12-12 | 联创汽车电子有限公司 | Electronically controlled EGR (Exhaust Gas Recirculation) valve |
| CN203442281U (en) * | 2013-09-10 | 2014-02-19 | 大陆汽车电子(芜湖)有限公司 | Linear driving device and exhaust recycling control valve |
| CN203702380U (en) * | 2013-12-20 | 2014-07-09 | 联创汽车电子有限公司 | Electric control EGR (Exhaust Gas Recirculation) valve with built-in controller |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775944A (en) * | 2015-04-25 | 2015-07-15 | 无锡隆盛科技股份有限公司 | Electric EGR (exhaust gas recirculation) valve |
| CN107850238A (en) * | 2015-08-31 | 2018-03-27 | 大陆汽车有限责任公司 | Valve |
| CN107850238B (en) * | 2015-08-31 | 2019-08-27 | 大陆汽车有限责任公司 | Valve |
| US10883621B2 (en) | 2015-08-31 | 2021-01-05 | Continental Automotive Gmbh | Valve |
| CN108368952A (en) * | 2015-12-07 | 2018-08-03 | 大陆汽车有限责任公司 | Valve |
| CN108368952B (en) * | 2015-12-07 | 2020-05-12 | 大陆汽车有限责任公司 | Valve with a valve body |
| US10900589B2 (en) | 2015-12-07 | 2021-01-26 | Vitesco Technologies GmbH | Valve |
| CN106907511A (en) * | 2017-05-03 | 2017-06-30 | 天津航天长征火箭制造有限公司 | A kind of liquid quantity control throttling arrangement |
| CN114439995A (en) * | 2022-01-26 | 2022-05-06 | 中核检修有限公司 | Valve booster |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
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| RJ01 | Rejection of invention patent application after publication |