CN109441673B - Butterfly type EGR valve of torque motor - Google Patents
Butterfly type EGR valve of torque motor Download PDFInfo
- Publication number
- CN109441673B CN109441673B CN201910005465.9A CN201910005465A CN109441673B CN 109441673 B CN109441673 B CN 109441673B CN 201910005465 A CN201910005465 A CN 201910005465A CN 109441673 B CN109441673 B CN 109441673B
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- torque motor
- valve body
- valve
- rotating shaft
- gear
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- 238000007789 sealing Methods 0.000 claims description 14
- 210000001503 joint Anatomy 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 20
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/52—Systems for actuating EGR valves
- F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
- F02M26/54—Rotary actuators, e.g. step motors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses a torque motor butterfly type EGR valve, which comprises a valve body, a rotating shaft rotatably arranged in the valve body and a valve plate fixedly arranged on the rotating shaft; the top of valve body is provided with the gear room, the top of gear room is provided with torque motor, be equipped with driving gear in the gear room, driven gear, spring seat and return spring on, driving gear fixes on torque motor's output shaft, driven gear fixes on the top of pivot and meshes with driving gear mutually, spring seat and return spring all overlap in the pivot, and the spring seat is located the below of driven gear and with pivot fixed connection, return spring is located the below of spring seat, return spring's top is fixed on spring seat, return spring's bottom is fixed on the valve body. The EGR valve provided by the invention is in rotary motion during motion, only the friction force is needed to be overcome during the use process, and the EGR valve can provide large flow and has long service life.
Description
Technical Field
The invention relates to the technical field of engine exhaust gas recirculation system control devices, in particular to a torque motor butterfly type EGR valve for introducing automobile exhaust to participate in reburning.
Background
The exhaust gas recirculation system (Exhaust Gas Recirculation) is referred to as EGR, and recirculates a small portion of the exhaust gas generated by a diesel or gasoline engine back to the cylinder. The recirculated exhaust gas, due to its inertness, will slow down the combustion process, i.e. the combustion speed will slow down and thus the pressure build-up in the combustion chamber, which is the main reason for the reduction of nitrogen oxides. In addition, increasing the exhaust gas recirculation rate will reduce the total exhaust gas flow (mass flow) and thus the total pollutant output in the exhaust gas emissions will be relatively reduced.
The electric EGR can reintroduce a proper amount of engine combustion exhaust gas into the air inlet pipe, and the engine combustion exhaust gas is mixed with fresh air and then enters an engine cylinder for secondary combustion, so that the combustion temperature in the cylinder is reduced, NOx generation and emission are reduced, and the electric EGR is generally arranged between an exhaust manifold and an air inlet manifold.
For medium-heavy diesel engines, the engine displacement is between 6L and 13L, and the exhaust gas recirculation system is characterized in that the exhaust gas recirculation system is provided with an EGR valve, so that the exhaust gas recirculation system is used for the exhaust gas recirculation of the engine, and the exhaust gas recirculation system is not capable of meeting the emission requirements. However, for the medium and heavy diesel engine, the diameter of the selected EGR valve port is large in order to achieve emission, otherwise, the exhaust gas flow requirement cannot be met, but according to the pressure characteristic, under the condition of certain pressure, the larger the sectional area is, the larger the pressure born by the valve plate is, so that the conventional poppet valve cannot meet the requirement because of the driving force problem. In addition, the medium and heavy duty engine also provides higher requirements on the service life of the EGR valve, and the brush motor used before cannot meet the service life requirements because of the problems of reversing and carbon brushes.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects of the prior art and providing a torque motor butterfly type EGR valve which can provide large flow and has long service life.
In order to solve the technical problems, the invention adopts the following technical scheme:
a butterfly-type EGR valve of a torque motor comprises a valve body, a rotating shaft rotatably arranged in the valve body and a valve plate fixedly arranged on the rotating shaft; the top of valve body is provided with the gear room, the top of gear room is provided with torque motor, be equipped with driving gear in the gear room, driven gear, spring seat and return spring on, driving gear fixes on torque motor's output shaft, driven gear fixes on the top of pivot and meshes with driving gear mutually, spring seat and return spring all overlap in the pivot, and the spring seat is located the below of driven gear and with pivot fixed connection, return spring is located the below of spring seat, return spring's top is fixed on spring seat, return spring's bottom is fixed on the valve body.
Further, the upper end and the lower end of the valve body are respectively provided with an upper end shaft hole and a lower end shaft hole, the upper end of the rotating shaft is arranged in the upper end shaft hole through a bearing, and the lower end of the rotating shaft is arranged in the lower end shaft hole through a lower shaft sleeve.
Further, the upper portion of lower axle sleeve is provided with abnormal shape retaining ring, circular draw-in groove has been seted up to the lower extreme circumference of pivot, and the inner circle card of retaining ring is in the draw-in groove.
Further, an oil seal is arranged in the upper end shaft hole and positioned below the bearing, the oil seal comprises an upper sealing lip and a lower sealing lip, and a metal framework is lined in each of the two lips.
Further, a lower end cover is arranged at the bottom of the valve body; the lower end cover is assembled in the lower end shaft hole in an interference manner, and a plurality of riveting blocks are fixedly arranged between the lower end cover and the valve body; the material of the lower end cover is the same as that of the valve body.
Further, a cooling water channel is arranged in the valve wall of the valve body.
Further, the valve plate is fixed on the rotating shaft through a locking screw, and a screw head of the locking screw is welded on the valve plate.
Further, the bearing is a needle bearing, and the lower shaft sleeve is a graphite bearing.
Further, a gear chamber cover plate is arranged at the upper part of the gear chamber, and the gear chamber cover plate covers the gear chamber through a fastening screw.
Furthermore, a positioning block is arranged in the central hole of the driving gear, and butt joint marks are arranged on the driving gear and the driven gear.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
the torque motor butterfly type EGR valve is mainly applied to medium and heavy diesel engines with engine displacement of 6L-13L, and is in rotary motion during motion, and only needs to overcome friction force during use, so that the valve can provide large flow and has long service life.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the angular characteristics of a torque motor of the present invention;
FIG. 3 is a torque motor torque characteristic schematic of the present invention;
FIG. 4 is a schematic diagram of the timing gear configuration of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4;
FIG. 6 is a schematic diagram of the relative positions of the driven gear and the valve body when the valve of the present invention is fully closed;
fig. 7 is a specific explanatory diagram of an oil seal structure of the present invention;
in the figure: 1. the torque motor, 2, the fastening screw, 3, the gear chamber cover plate, 4, the valve body, 5, the lock nut, 6, the driven gear, 7, the spring upper seat, 8, the return spring, 9, the bearing, 10, the oil seal, 11, the rotating shaft, 12, the valve block, 13, the lower end cover, 14, the lower shaft sleeve, 15, the lock screw, 16, the retainer ring, 17, the positioning block, 18, the driving gear, 19 and the valve body gear position.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1, the invention discloses a torque motor butterfly type EGR valve, which comprises a valve body 4, a rotating shaft 11 rotatably arranged in the valve body 4 and a valve plate 12 fixedly arranged on the rotating shaft 11; the top of valve body 4 is provided with the gear room, the top of gear room is provided with torque motor 1, be equipped with driving gear 18 in the gear room, driven gear 6, spring seat 7 and return spring 8, driving gear 18 fixes on torque motor 1's output shaft, driven gear 6 is fixed on the top of pivot 11 and meshes with driving gear 18, spring seat 7 and return spring 8 all overlap in pivot 11, and spring seat 7 is located driven gear 6's below and with pivot 11 fixed connection, return spring 8 is located spring seat 7's below, the top of return spring 8 is fixed on spring seat 7, the bottom of return spring 8 is fixed on valve body 4.
The torque motor 1 is used as a power source to directly drive the driving gear 18 to rotate, the driving gear 18 is meshed with the driven gear 6, the driven gear 6 is assembled on the rotating shaft 11, and the valve plate 12 is also directly assembled on the rotating shaft 11, so that the torque transmission of the torque motor 1 is realized.
The upper end and the lower end of the valve body 4 are respectively provided with an upper end shaft hole and a lower end shaft hole, the upper end of the rotating shaft 11 is arranged in the upper end shaft hole through a bearing 9, and the lower end of the rotating shaft 11 is arranged in the lower end shaft hole through a lower shaft sleeve 14. The upper portion of lower axle sleeve 14 is provided with abnormal shape retaining ring 16, and the below of lower axle sleeve 14 is provided with lower end cover 13, and the lower extreme of pivot 11 is inserted in retaining ring 16 and lower axle sleeve 14 to the circular draw-in groove has been seted up to the lower extreme circumference of pivot 11, and the inner circle card of retaining ring 16 is in the draw-in groove. In order to ensure that the rotating shaft 11 moves in a limited manner at the axial position, the axial clamping of the rotating shaft 11 caused by thermal expansion and cold contraction under the condition of high temperature is considered, a special-shaped check ring 16 is arranged in a shaft hole at the lower end, the lower shaft sleeve 14 is positioned below the check ring 16, and the check ring 16 is clamped in a clamping groove on the rotating shaft 11; during assembly, the lower bushing 14 presses against the collar 16.
The bottom of the valve body 4 is provided with a lower end cover 13; the lower end cover 13 is assembled in the lower end shaft hole in an interference manner, and a plurality of riveting blocks are fixedly arranged between the lower end cover 13 and the valve body 4; the axial leakage referred to in the present invention refers to leakage at the bearing 9 and leakage at the lower bushing 14, and leakage at the bearing 9 can be sealed by the oil seal 10, and leakage at the lower bushing 14 can be sealed by the lower end cap 13. The material of the lower end cover 13 is the same as or similar to that of the valve body 4, and in order to prevent the lower end cover 13 from falling from the lower end shaft hole, the lower end cover 13 is not only designed to be interference, but also needs to be riveted with the valve body 4.
As shown in fig. 1, when the rotating shaft 11 moves upward, because the valve body 4 contacts with the retainer ring 16, the rotating shaft 11 can be effectively prevented from moving upward, and when the rotating shaft 11 moves downward, because the lower shaft sleeve 14 is pressed in by interference, and the lower end cover 13 presses the lower shaft sleeve 14, the downward movement of the rotating shaft 11 can be ensured. In the structural design of the EGR valve, the fewer parts are, the higher the reliability is, the parts are simplified as much as possible, and the reliability can still be well ensured.
An oil seal 10 is arranged in an upper end shaft hole and positioned below a bearing 9, the oil seal 10 is sleeved on a rotating shaft 11, the oil seal 10 comprises an upper sealing lip 10-1 and a lower sealing lip 10-2, and a metal framework is lined in each lip. At present, the engine has large discharge capacity and large exhaust pressure, so that waste gas does not run into a gear chamber, an oil seal 10 is arranged in an upper end shaft hole, the oil seal 10 is uniformly provided with an upper sealing lip and a lower sealing lip, the lips are lined with metal frameworks, the upper sealing lip 10-1 is used for sealing gas, and the lower sealing lip 10-2 is used for sealing possibly running out gas and lubricating grease of a bearing 9.
Referring to fig. 7, the structure of the oil seal 10 is described, wherein the upper lip seal 10-1 in the structure of the oil seal 10 is forced to tightly adhere to the rotary shaft 11 after receiving the exhaust pressure of the engine, the higher the pressure is, the tighter the adhesion is, the better the sealing effect is, and the lower lip seal 10-2 is designed to prevent the upper end from having gas or grease passing through the lip seal, even if some gas passes through the upper lip seal 10-1, the lower lip seal 10-2 is continuously sealed, and the lower lip seal 10-2 is designed to have the sealing lip upward.
The valve wall of the valve body 4 is provided with the cooling water channel which is used for cooling gas and ensuring that the oil seal 10 can meet the requirement of use, so as to adapt to the hot end installation of the EGR valve.
In order to prevent the valve plate 12 from being locked under the condition of high temperature, the valve plate 12 is fixed on the rotating shaft 11 through the locking screw 15, the valve plate 12 and the rotating shaft 11 are welded during assembly, and the screw head of the locking screw 15 is also welded on the valve plate 12.
Because the bearing 9 is positioned above the water channel, the bearing 9 adopts a needle bearing, the lower shaft sleeve 14 is required to bear the high temperature of about 700 ℃, and the lower shaft sleeve 14 can be a graphite bearing in consideration of the specificity.
The upper part of the gear chamber is provided with a gear chamber cover plate 3, and the gear chamber cover plate 3 is covered on the gear chamber through a screw 2.
The central hole of the driving gear 18 is provided with a positioning block 17, and the driving gear 18 and the driven gear 6 are provided with butt joint marks. During assembly, the retainer ring 16 is sleeved in a clamping groove at the lower end of the rotating shaft 11, then the rotating shaft 11 provided with the retainer ring 16 is placed in a lower end shaft hole of the valve body 4, and the lower shaft sleeve 14 is pressed in the lower end shaft hole from the lower side; the upper end of the rotating shaft 11 is provided with an oil seal 10, then is provided with a bearing 9, and then a valve plate 12 is fixed on the rotating shaft 11 and is locked by a locking screw 15; after the valve plate 12 is in the fully closed position, the upper end of the rotating shaft 11 is provided with a return spring 8, a spring upper seat 7 and a driven gear 6, the upper end is locked by a lock nut 5, the torque motor 1 is adjusted to the 10-degree position according to the figure 2, a driving gear 18 is assembled, the upper end is locked by a positioning block 17, the butt joint mark of the driven gear 6 is butt jointed with the butt joint mark of the driving gear 18 according to the figure 4, and finally a motor locking screw is assembled.
The driving gear 18 and the driven gear 6 are used for transmitting torque, according to the characteristic of the torque, the driving gear 18 is arranged in the torque motor 1 during assembly, after the valve body is assembled, the valve plate 12 is adjusted to the full light position, then the torque motor 1 is rotated to the position of 10 degrees, teeth corresponding to the butt joint mark of the driven gear 6 are placed between teeth corresponding to the butt joint mark of the driving gear 18, and then the driven gear 6 and the rotating shaft 11 are locked, wherein the corresponding stroke is 70 degrees, namely the corresponding 80-degree position of the corresponding torque motor 1.
Fig. 3 is a torque characteristic diagram of a torque motor, wherein the abscissa of the diagram is an angle, the ordinate is a torque value, and 6 curves respectively refer to corresponding torques under different currents. From this characteristic, it can be seen that the motor rises or falls rapidly between 0 ° -10 ° and 80 ° to 90 °, so that this interval angle is avoided as much as possible when in use. As can be seen with reference to fig. 2, i.e. 10 ° and 80 ° as shown in fig. 3, preferably between 70 °. Under ideal conditions, the torque motor 1 corresponds to 10 ° when the EGR valve is fully closed, and then the torque motor 1 corresponds to 80 ° when the EGR valve is fully open. The corresponding sensor signal value can be monitored at the 10 ° position of the torque motor 1, i.e. a signal value can be monitored when the motor is rotated to 10 °, which signal value is unique. As shown in fig. 6 again, the valve plate 12 is at the fully closed position, the included angle between the driven gear 6 and the valve body 4 is 70 °, and when the driven gear 6 contacts the valve body 4, the EGR valve is at the fully open position, but in the actual assembly process, it is impossible to measure the included angle between the driven gear 6 and the valve body 4 by using an angle gauge. In the actual assembly process, therefore, the 10 ° of the torque motor 1 is read out with a multimeter, the driving gear 18 is then inserted, the driving gear 18 is then fixed, and then the driving gear 18 and the driven gear 6 are assembled according to the butt mark position, that is, the so-called timing gear, as shown in fig. 4. The effect at this time is that the torque motor 1 corresponds to 10 ° of the position where the valve plate 12 is fully closed, and then the stroke of 70 ° is determined by the included angle of the driven gear 6 and the valve body 4.
Claims (7)
1. A torque motor butterfly type EGR valve is characterized in that: comprises a valve body (4), a rotating shaft (11) rotatably arranged in the valve body (4) and a valve plate (12) fixedly arranged on the rotating shaft (11); the top of the valve body (4) is provided with a gear chamber, the top of the gear chamber is provided with a torque motor (1), a driving gear (18), a driven gear (6), a spring upper seat (7) and a return spring (8) are arranged in the gear chamber, the driving gear (18) is fixed on an output shaft of the torque motor (1), the driven gear (6) is fixed at the top end of a rotating shaft (11) and meshed with the driving gear (18), the working angle range of the torque motor (1) is 70 degrees, when the EGR valve is at a fully closed position, the torque motor (1) rotates to a 10-degree position, and when the EGR valve is at a fully opened position, the torque motor (1) rotates to an 80-degree position; the spring upper seat (7) and the return spring (8) are sleeved on the rotating shaft (11), the spring upper seat (7) is positioned below the driven gear (6) and fixedly connected with the rotating shaft (11), the return spring (8) is positioned below the spring upper seat (7), the top end of the return spring (8) is fixed on the spring upper seat (7), and the bottom end of the return spring (8) is fixed on the valve body (4);
the upper end and the lower end of the valve body (4) are respectively provided with an upper end shaft hole and a lower end shaft hole, the upper end of the rotating shaft (11) is arranged in the upper end shaft hole through a bearing (9), and the lower end of the rotating shaft (11) is arranged in the lower end shaft hole through a lower shaft sleeve (14); the upper part of the lower shaft sleeve (14) is provided with a special-shaped retainer ring (16), the lower end of the rotating shaft (11) is circumferentially provided with a circular clamping groove, and the inner ring of the retainer ring (16) is clamped in the clamping groove;
an oil seal (10) is arranged in the upper end shaft hole and below the bearing (9), the oil seal (10) comprises an upper sealing lip (10-1) and a lower sealing lip (10-2), and a metal framework is lined in each of the two lips; the bottom of the valve body (4) is provided with a lower end cover (13); the lower end cover (13) is assembled in the lower end shaft hole in an interference mode, and a plurality of riveting blocks are fixedly arranged between the lower end cover (13) and the valve body (4).
2. The torque motor butterfly EGR valve of claim 1, wherein: the material of the lower end cover (13) is the same as that of the valve body (4).
3. The torque motor butterfly EGR valve of claim 1, wherein: a cooling water channel is arranged in the valve wall of the valve body (4).
4. The torque motor butterfly EGR valve of claim 1, wherein: the valve plate (12) is fixed on the rotating shaft (11) through a locking screw (15), and a screw head of the locking screw (15) is welded on the valve plate (12).
5. The torque motor butterfly EGR valve of claim 1, wherein: the bearing (9) is a needle bearing, and the lower shaft sleeve (14) is a graphite bearing.
6. The torque motor butterfly EGR valve of claim 1, wherein: the upper part of the gear chamber is provided with a gear chamber cover plate (3), and the gear chamber cover plate (3) covers the gear chamber through a fastening screw (2).
7. The torque motor butterfly EGR valve of claim 1, wherein: a positioning block (17) is arranged in a central hole of the driving gear (18), and butt joint marks are arranged on the driving gear (18) and the driven gear (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005465.9A CN109441673B (en) | 2019-01-03 | 2019-01-03 | Butterfly type EGR valve of torque motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005465.9A CN109441673B (en) | 2019-01-03 | 2019-01-03 | Butterfly type EGR valve of torque motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109441673A CN109441673A (en) | 2019-03-08 |
| CN109441673B true CN109441673B (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910005465.9A Active CN109441673B (en) | 2019-01-03 | 2019-01-03 | Butterfly type EGR valve of torque motor |
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| Country | Link |
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| CN (1) | CN109441673B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090422A (en) * | 2021-04-12 | 2021-07-09 | 渭南美联桥汽车新技术研究院有限公司 | High-temperature end valve assembly for exhaust gas recirculation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201747485U (en) * | 2010-08-17 | 2011-02-16 | 无锡隆盛科技有限公司 | Electric EGR valve |
| CN203867715U (en) * | 2014-06-04 | 2014-10-08 | 四川田奥环保科技有限公司 | Electronic throttle valve installed on engine intake manifold |
| CN105351102A (en) * | 2015-12-04 | 2016-02-24 | 无锡隆盛科技股份有限公司 | Diesel engine electronic throttle valve |
| CN108087127A (en) * | 2017-12-28 | 2018-05-29 | 无锡隆盛科技股份有限公司 | A kind of torque motor air throttle |
| CN209212416U (en) * | 2019-01-03 | 2019-08-06 | 无锡隆盛科技股份有限公司 | A kind of torque motor tab (s) formula EGR valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1869308B1 (en) * | 2005-03-08 | 2014-08-06 | BorgWarner, Inc. | Egr valve having rest position |
-
2019
- 2019-01-03 CN CN201910005465.9A patent/CN109441673B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201747485U (en) * | 2010-08-17 | 2011-02-16 | 无锡隆盛科技有限公司 | Electric EGR valve |
| CN203867715U (en) * | 2014-06-04 | 2014-10-08 | 四川田奥环保科技有限公司 | Electronic throttle valve installed on engine intake manifold |
| CN105351102A (en) * | 2015-12-04 | 2016-02-24 | 无锡隆盛科技股份有限公司 | Diesel engine electronic throttle valve |
| CN108087127A (en) * | 2017-12-28 | 2018-05-29 | 无锡隆盛科技股份有限公司 | A kind of torque motor air throttle |
| CN209212416U (en) * | 2019-01-03 | 2019-08-06 | 无锡隆盛科技股份有限公司 | A kind of torque motor tab (s) formula EGR valve |
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| Publication number | Publication date |
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| CN109441673A (en) | 2019-03-08 |
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