CN102767427A - Sectional travel characteristic pneumatic actuator device of turbocharger - Google Patents
Sectional travel characteristic pneumatic actuator device of turbocharger Download PDFInfo
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- CN102767427A CN102767427A CN2012102168101A CN201210216810A CN102767427A CN 102767427 A CN102767427 A CN 102767427A CN 2012102168101 A CN2012102168101 A CN 2012102168101A CN 201210216810 A CN201210216810 A CN 201210216810A CN 102767427 A CN102767427 A CN 102767427A
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- auxilliary
- core bar
- seat
- shell body
- lower shell
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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
Abstract
The invention discloses a sectional travel characteristic pneumatic actuator device of a turbocharger, which includes an upper casing and a lower casing, wherein a rubber diaphragm is arranged between the upper and the lower casings, and divides a cavity between the upper and the lower casings into two cavities, namely a first cavity and a second cavity, that are not communicated; a diaphragm seat is arranged in a position inside the second cavity and near to the rubber diaphragm; an auxiliary core bar is connected onto the diaphragm seat; and springs with different elasticity coefficients are mounted on the auxiliary core bar. The sectional travel characteristic pneumatic actuator device can realize the matching of different travel characteristics, so that the performance of the supercharger is adjusted to the optimum as far as possible.
Description
Technical field
The present invention relates to a kind of turbosupercharger pneumatic actuator device, relate in particular to a kind of segmented stroke characteristic pneumatic actuator device of turbosupercharger, belong to field of internal combustion engine.
Background technique
Continuous development along with national Abgasgesetz and user's request; The motor especially supercharging technology of DENG has also had significant progress; The structure of exhaust-gas turbocharger has developed into the exhaust gas bypass structure pressurized machine that can take into account the low engine speed moment of torsion from traditional constant cross-section; Arrived after the enforcement of state III Abgasgesetz; People are more and more stronger for the demand of the engine supercharger that can take into account the high low-speed performance of motor, and variable-area turbocharger becomes the emphasis of domestic and international research and development.On variable-area turbocharger was used, its control was a big problem always, and the traditional, pneumatic final controlling element can not segmentation owing to stroke characteristic; Can only linearity control; Can't realize the Performance Match of full operating mode, and adopt automatically controlled final controlling element, cost can increase a lot; And also there is certain problem in reliability; Researching and developing a kind of segmented stroke characteristic pneumatic actuator, realize the organic unity of variable-area turbocharger Performance Match, cost, reliability, has been the problem that turbosupercharger producer presses for solution.
At present; Pressurized machine pneumatic actuator structure is as shown in Figure 1; Generally comprise upper shell 8, elastomer diaphragm 6, diaphragm seat 7, spring 2, lower shell body 1, core bar 3, valve 10; Upper shell 8 connects together through bolt 5 and elastomer diaphragm 6 with lower shell body 1, and diaphragm seat 7 links together through nut 9 with core bar 3, and whole pneumatic actuator is installed on the pressurized machine through connection screw thread hole 4.During work; The gas that has pressure gets into the closed cavity of upper shell 8 and elastomer diaphragm 6 formation from valve 10; Promote elastomer diaphragm 6 and move to lower shell body 1 direction with diaphragm seat 7, diaphragm seat 7 drives with its core bar that fits together 3 and moves, and realizes the adjusting to pressurized machine.This pneumatic actuator is owing to only lean on single spring to decide final stroke characteristic, so can only be linear motion, stroke characteristic be by the elasticity coefficient decision of spring.
Summary of the invention
The technical problem that the present invention will solve is the above defective to traditional pressurized machine pneumatic actuator structure, and a kind of segmented stroke characteristic pneumatic actuator device of turbosupercharger of the organic unity that can realize variable-area turbocharger Performance Match, cost, reliability is provided.
For addressing the above problem, the present invention adopts following technological scheme:
A kind of segmented stroke characteristic pneumatic actuator device of turbosupercharger comprises upper shell and lower shell body;
Be provided with elastomer diaphragm between upper shell and the lower shell body;
Elastomer diaphragm is partitioned into two mutual disconnected cavitys with the cavity between upper shell and the lower shell body: first cavity and second cavity;
Position near elastomer diaphragm in second cavity is provided with the diaphragm seat;
Be connected with auxilliary core bar on the said diaphragm seat; On the auxilliary core bar the different spring of twice elasticity coefficient is installed.
Below be the further improvement of the present invention to such scheme:
Be welded with the lock pin assembly on the diaphragm seat, can slide each other between auxilliary core bar and the diaphragm seat, also can lock together motion through last lock pin assembly;
Auxilliary core bar away from an end of diaphragm seat from lower shell body stretch out and and lower shell body between be slidingly connected.
Further improve:
Be connected with main core bar on the said diaphragm seat; A wherein end of said main core bar is fixedly connected with the diaphragm seat, and the other end stretches out and is slidingly connected with lower shell body from lower shell body.
Further improve:
Be connected with main core bar on the said diaphragm seat; A wherein end of said main core bar is fixedly connected with the diaphragm seat, and the other end stretches out and is slidingly connected with lower shell body from lower shell body.
The fixed-site that is positioned at auxilliary core bar one side on the lower shell body is connected with the auxiliary rod parallel with assisting core bar, and the other end of said auxiliary rod is positioned at lower shell body.
Further improve:
Lean on the position, lining to be provided with the first recessed band near the end of an end of diaphragm seat on the said auxiliary rod;
Position near lower shell body on the main core bar is provided with the second recessed band, and the position near the second recessed band on the lower shell body is provided with down the lock pin assembly, and following lock pin assembly is welded on the lower shell body;
Auxilliary core bar is provided with the locking pin-and-hole, to cooperate the locking of assisting core bar with last lock pin assembly, following lock pin assembly.
Further improve: auxilliary core bar is provided with main spring seat and auxilliary spring seat; Main spring seat and auxilliary core bar are through being welded together; Be slidingly connected between auxilliary spring seat and the auxilliary core bar, the spring that the twice elasticity coefficient is different is separately positioned on main spring seat and the auxilliary spring seat.
Further improve: said main spring seat is arranged between auxilliary spring seat and the diaphragm seat.
Further improve: all less than the length and the diameter of auxilliary spring, auxilliary spring housing is contained in the outside of main spring for the length of main spring and diameter.
During work; The gas that has pressure gets into first cavity from valve; Promote elastomer diaphragm and move with the downward housing direction of diaphragm seat, the diaphragm seat is assisted core bar and is compressed main spring through the main spring seat that welds together through the motion that connects together of last lock pin assembly and auxilliary core bar; Main core bar is regulated pressurized machine along with the diaphragm seat moves together.
At this moment, a main spring works, and stroke characteristic is by the elasticity coefficient decision of main spring.Along with the rising of pressure, the diaphragm seat continues to move, when the first recessed band of last lock pin assembly entering auxiliary rod, when the lock pin assembly leaves the second recessed band of main core bar down; The diaphragm seat breaks off with auxilliary core bar and being connected; Simultaneously, auxilliary core bar is no longer participated in motion by locked.
The diaphragm seat continues to promote the auxilliary downward housing direction of spring seat and moves, the auxilliary spring of compression, at this moment, and only auxilliary springs, stroke characteristic is by the elasticity coefficient decision of auxilliary spring.
When pressure reduces, diaphragm seat retraction, when last lock pin assembly leave the first recessed band of auxiliary rod, when the lock pin assembly gets into the second recessed band of main core bar down, the diaphragm seat is connected with auxilliary core bar again;
Simultaneously, auxilliary core bar is locked is opened, and continues to participate in motion, and a main spring works again.Like this, can realize the collocation of various different stroke characteristics, as much as possible booster performance transferred to the best.
The another kind of improvement:
Main spring is identical with the diameter of auxilliary spring, and main spring is arranged between main spring seat and the lower shell body, and auxilliary spring is arranged between main spring seat and the auxilliary spring seat.
During work; The gas that has pressure gets into first cavity of upper shell and elastomer diaphragm formation from valve; Promote elastomer diaphragm and move with the downward housing direction of diaphragm seat, the diaphragm seat is assisted core bar and is compressed main spring through the main spring seat that welds together through the motion that connects together of last lock pin assembly and auxilliary core bar; Main core bar is regulated pressurized machine along with the diaphragm seat moves together.
At this moment, a main spring works, and stroke characteristic is by the elasticity coefficient decision of main spring.
Along with the rising of pressure, the diaphragm seat continues to move, when the first recessed band of last lock pin assembly entering auxiliary rod, when the lock pin assembly leaves the second recessed band of main core bar down; The diaphragm seat breaks off with auxilliary core bar and being connected; Simultaneously, auxilliary core bar is no longer participated in motion by locked.
The diaphragm seat continues to promote the auxilliary downward housing direction of spring seat and moves, the auxilliary spring of compression.At this moment, only auxilliary springs, stroke characteristic is by the elasticity coefficient decision of auxilliary spring.
When pressure reduces, diaphragm seat retraction, when last lock pin assembly leave the first recessed band of auxiliary rod, when the lock pin assembly gets into the second recessed band of main core bar down; The diaphragm seat is connected with auxilliary core bar again, and simultaneously, auxilliary core bar is locked is opened; Continue to participate in motion, a main spring works again.
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Description of drawings
Accompanying drawing 1 is the structural representation of pneumatic actuator in the background technique of the present invention;
Accompanying drawing 2 is right elevations of accompanying drawing 1;
Accompanying drawing 3 is structural representations of pneumatic actuator in the embodiment of the invention 1;
Accompanying drawing 4 is right elevations of accompanying drawing 3;
Accompanying drawing 5 is structural representations of pneumatic actuator in the embodiment of the invention 2.
Among the figure: the 1-lower shell body; The 2-spring; The 3-core bar; The 4-connection screw thread hole; The 5-bolt; The 6-elastomer diaphragm; 7-diaphragm seat; The 8-upper shell; The 9-nut; The 10-valve; The 11-auxiliary rod; The 12-nut; 13-assists core bar; Lock pin assembly under the 14-; 15-master's core bar; The 16-main spring; 17-assists spring; 18-main spring seat; The 19-bolt; The 20-support arm; 21-assists spring seat; The last lock pin assembly of 22-; The 23-first recessed band; The 24-second recessed band; 25-locking pin-and-hole; 26-first cavity; 27-second cavity.
Embodiment
Embodiment 1, and like Fig. 3, shown in Figure 4, a kind of segmented stroke characteristic pneumatic actuator device of turbosupercharger comprises upper shell 8 and lower shell body 1;
Be provided with elastomer diaphragm 6 between upper shell 8 and the lower shell body 1, upper shell 8 is tightly connected through bolt 5 and elastomer diaphragm 6 with lower shell body 1;
Said upper shell 8 is provided with the valve 10 that is communicated with first cavity 26.
Position near elastomer diaphragm 6 in second cavity 27 is provided with diaphragm seat 7, is connected with main core bar 15 on the said diaphragm seat 7;
A wherein end of said main core bar 15 is fixedly connected with diaphragm seat 7 through bolt 19, and the other end stretches out and is slidingly connected with lower shell body 1 from lower shell body 1.
Lower shell body 1 is provided with and is used for the connection screw thread hole 4 that is connected with pressurized machine.
Said diaphragm seat 7 is provided with endoporus, is connected with auxilliary core bar 13 in the endoporus;
Be welded with lock pin assembly 22 on the diaphragm seat 7, can slide each other between auxilliary core bar 13 and the diaphragm seat 7, also can lock together motion through last lock pin assembly 22; Last lock pin assembly is made up of lock pin, spring, shell, nature lock pin retraction.
On the auxilliary core bar 13 the different spring of twice elasticity coefficient is installed.
The position that is positioned at auxilliary core bar 13 1 sides on the lower shell body 1 is fixedly connected with the auxiliary rod 11 parallel with auxilliary core bar 13 through nut 12, and the other end of said auxiliary rod 11 is positioned at lower shell body 1, and the support arm 20 that is used for fixing auxiliary rod 11 is installed on the lower shell body 1.
Lean on the position, lining to be provided with first near the end of an end of diaphragm seat 7 on the said auxiliary rod 11 and recessedly be with 23;
Be provided with second near the position of lower shell body 1 on the main core bar 15 and recessedly be with 24, be provided with the identical following lock pin assembly 14 of structure and last lock pin assembly 22 near the second recessed position with 24 on the lower shell body 1, following lock pin assembly 14 is welded on the lower shell body 1.
Said main spring seat 18 is arranged between auxilliary spring seat 21 and the diaphragm seat 7.
All less than the length and the diameter of auxilliary spring 17, auxilliary spring 17 is sleeved on the outside of main spring 16 for the length of main spring 16 and diameter.
During work; The gas that has pressure gets into first cavity 26 from valve 10; Promote elastomer diaphragm 6 and move to lower shell body 1 direction with diaphragm seat 7, diaphragm seat 7 is through the motion that connects together of last lock pin assembly 22 and auxilliary core bar 13, and auxilliary core bar 13 compresses main springs 16 through the main spring seat 18 that welds together; Main core bar 15 is regulated pressurized machine along with diaphragm seat 7 moves together.
At this moment, a main spring 16 works, and stroke characteristic is by the elasticity coefficient decision of main spring 16.Along with the rising of pressure, diaphragm seat 7 continues to move, when last lock pin assembly 22 gets into the first recessed with 23, lock pin assembly 14 leaves the second recessed when being with 24 of main core bar 15 down of auxiliary rods 11; Diaphragm seat 7 breaks off with auxilliary core bar 13 and being connected; Simultaneously, auxilliary core bar 13 is no longer participated in motion by locked.
When pressure reduces, diaphragm seat 7 retraction, when last lock pin assembly 22 leaves the first recessed with 23, lock pin assembly 14 gets into the second recessed when being with 24 of main core bar 15 down of auxiliary rod 11, diaphragm seat 7 is connected with auxilliary core bar 13 again;
Simultaneously, auxilliary core bar 13 locked being opened continue to participate in motion, and a main spring 16 works again.Like this, can realize the collocation of various different stroke characteristics, as much as possible booster performance transferred to the best.
During work; The gas that has pressure gets into first cavity 26 of upper shell 8 and elastomer diaphragm 6 formation from valve 10; Promote elastomer diaphragm 6 and move to lower shell body 1 direction with diaphragm seat 7, diaphragm seat 7 is through the motion that connects together of last lock pin assembly 22 and auxilliary core bar 13, and auxilliary core bar 13 compresses main springs 16 through the main spring seat 18 that welds together; Main core bar 15 is regulated pressurized machine along with diaphragm seat 7 moves together.
At this moment, a main spring 16 works, and stroke characteristic is by the elasticity coefficient decision of main spring 16.
Along with the rising of pressure, diaphragm seat 7 continues to move, when last lock pin assembly 22 gets into the first recessed with 23, lock pin assembly 14 leaves the second recessed when being with 24 of main core bar 15 down of auxiliary rods 11; Diaphragm seat 7 breaks off with auxilliary core bar 13 and being connected; Simultaneously, auxilliary core bar 13 is no longer participated in motion by locked.
When pressure reduces; Diaphragm seat 7 retraction, when last lock pin assembly 22 leaves the first recessed with 23, lock pin assembly 14 gets into the second recessed when being with 24 of main core bar 15 down of auxiliary rod 11, diaphragm seat 7 is connected with auxilliary core bar 13 again; Simultaneously; Auxilliary core bar 13 locked being opened continue to participate in motion, and a main spring 16 works again.
Like this, can realize the collocation of various different stroke characteristics, as much as possible booster performance transferred to the best.
We have carried out detailed explanation according to the national patent method to invention now, can discern the improvement or the replacement of specific embodiment disclosed herein for those skilled in the art.These modifications are within the spirit and scope of the present invention.
Claims (10)
1. the segmented stroke characteristic pneumatic actuator device of a turbosupercharger comprises upper shell (8) and lower shell body (1);
Be provided with elastomer diaphragm (6) between upper shell (8) and the lower shell body (1);
Elastomer diaphragm (6) is partitioned into two mutual disconnected cavitys with the cavity between upper shell (8) and the lower shell body (1): first cavity (26) and second cavity (27);
Position near elastomer diaphragm (6) in second cavity (27) is provided with diaphragm seat (7);
It is characterized in that:
Be connected with auxilliary core bar (13) on the said diaphragm seat (7); On the auxilliary core bar (13) the different spring of twice elasticity coefficient is installed.
2. the segmented stroke characteristic pneumatic actuator device of turbosupercharger according to claim 1 is characterized in that:
Be welded with lock pin assembly (22) on the diaphragm seat (7), can slide each other between auxilliary core bar (13) and the diaphragm seat (7), also can lock together motion through last lock pin assembly (22);
Auxilliary core bar (13) away from an end of diaphragm seat (7) from lower shell body (1) stretch out and and lower shell body (1) between be slidingly connected.
3. the segmented stroke characteristic pneumatic actuator device of turbosupercharger according to claim 2 is characterized in that:
Be connected with main core bar (15) on the said diaphragm seat (7); A wherein end of said main core bar (15) is fixedly connected with diaphragm seat (7), and the other end stretches out and is slidingly connected with lower shell body (1) from lower shell body (1).
4. the segmented stroke characteristic pneumatic actuator device of turbosupercharger according to claim 3 is characterized in that:
Be connected with main core bar (15) on the said diaphragm seat (7); A wherein end of said main core bar (15) is fixedly connected with diaphragm seat (7), and the other end stretches out and is slidingly connected with lower shell body (1) from lower shell body (1).
5. the segmented stroke characteristic pneumatic actuator device of turbosupercharger according to claim 4 is characterized in that:
The fixed-site that is positioned at auxilliary core bar (13) one sides on the lower shell body (1) is connected with the auxiliary rod (11) parallel with assisting core bar (13), and the other end of said auxiliary rod (11) is positioned at lower shell body (1).
6. the segmented stroke characteristic pneumatic actuator device of turbosupercharger according to claim 5 is characterized in that:
Said auxiliary rod (11) is gone up near the end of an end of diaphragm seat (7) and is leaned on the position, lining to be provided with the first recessed band (23);
The position that main core bar (15) is gone up near lower shell body (1) is provided with the second recessed band (24), and the position that lower shell body (1) is gone up near the second recessed band (24) is provided with down lock pin assembly (14), and following lock pin assembly (14) is welded on the lower shell body (1);
Auxilliary core bar (13) is provided with locking pin-and-hole (25), to cooperate the locking of assisting core bar (13) with last lock pin assembly (22), following lock pin assembly (14).
7. the segmented stroke characteristic pneumatic actuator device of turbosupercharger according to claim 6 is characterized in that:
Auxilliary core bar (13) is provided with main spring seat (18) and auxilliary spring seat (21); Main spring seat (18) and auxilliary core bar (13) are through being welded together; Be slidingly connected between auxilliary spring seat (21) and the auxilliary core bar (13), the spring that the twice elasticity coefficient is different is separately positioned on main spring seat (18) and the auxilliary spring seat (21).
8. the segmented stroke characteristic pneumatic actuator device of turbosupercharger according to claim 7 is characterized in that:
Said main spring seat (18) is arranged between auxilliary spring seat (21) and the diaphragm seat (7).
9. the segmented stroke characteristic pneumatic actuator device of turbosupercharger according to claim 8 is characterized in that:
All less than the length and the diameter of auxilliary spring (17), auxilliary spring (17) is sleeved on the outside of main spring (16) for the length of main spring (16) and diameter.
10. the segmented stroke characteristic pneumatic actuator device of turbosupercharger according to claim 8 is characterized in that:
Main spring (16) is identical with the diameter of auxilliary spring (17), and main spring (16) is arranged between main spring seat (18) and the lower shell body (1), and auxilliary spring (17) is arranged between main spring seat (18) and the auxilliary spring seat (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210216810.1A CN102767427B (en) | 2012-06-28 | 2012-06-28 | Sectional travel characteristic pneumatic actuator device of turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210216810.1A CN102767427B (en) | 2012-06-28 | 2012-06-28 | Sectional travel characteristic pneumatic actuator device of turbocharger |
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| Publication Number | Publication Date |
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| CN102767427A true CN102767427A (en) | 2012-11-07 |
| CN102767427B CN102767427B (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210216810.1A Active CN102767427B (en) | 2012-06-28 | 2012-06-28 | Sectional travel characteristic pneumatic actuator device of turbocharger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100363A (en) * | 2014-07-28 | 2014-10-15 | 康跃科技股份有限公司 | Differential pressure type pneumatic actuator device |
| CN108894858A (en) * | 2018-06-21 | 2018-11-27 | 浙江吉利控股集团有限公司 | The ternary catalystic device structure of integrated heat-insulation window |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3096614A (en) * | 1961-03-29 | 1963-07-09 | Garrett Corp | Turbo-charger boost density control |
| US3195805A (en) * | 1961-10-25 | 1965-07-20 | Garrett Corp | Turbocharger differential pressure control |
| US4005579A (en) * | 1975-03-31 | 1977-02-01 | The Garrett Corporation | Turbocharger control and method |
| CN201581981U (en) * | 2009-12-10 | 2010-09-15 | 湖南天雁机械有限责任公司 | Bypass valve actuator of turbocharger |
| WO2011141533A1 (en) * | 2010-05-14 | 2011-11-17 | Hella Kgaa Hueck & Co. | Actuator for a closing member of a pressure channel |
| CN202611860U (en) * | 2012-06-28 | 2012-12-19 | 康跃科技股份有限公司 | Segment-based travel characteristic pneumatic actuator device of turbocharger |
-
2012
- 2012-06-28 CN CN201210216810.1A patent/CN102767427B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3096614A (en) * | 1961-03-29 | 1963-07-09 | Garrett Corp | Turbo-charger boost density control |
| US3195805A (en) * | 1961-10-25 | 1965-07-20 | Garrett Corp | Turbocharger differential pressure control |
| US4005579A (en) * | 1975-03-31 | 1977-02-01 | The Garrett Corporation | Turbocharger control and method |
| CN201581981U (en) * | 2009-12-10 | 2010-09-15 | 湖南天雁机械有限责任公司 | Bypass valve actuator of turbocharger |
| WO2011141533A1 (en) * | 2010-05-14 | 2011-11-17 | Hella Kgaa Hueck & Co. | Actuator for a closing member of a pressure channel |
| CN202611860U (en) * | 2012-06-28 | 2012-12-19 | 康跃科技股份有限公司 | Segment-based travel characteristic pneumatic actuator device of turbocharger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100363A (en) * | 2014-07-28 | 2014-10-15 | 康跃科技股份有限公司 | Differential pressure type pneumatic actuator device |
| CN108894858A (en) * | 2018-06-21 | 2018-11-27 | 浙江吉利控股集团有限公司 | The ternary catalystic device structure of integrated heat-insulation window |
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| CN102767427B (en) | 2014-03-19 |
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Effective date of registration: 20210104 Address after: No.1 luoqian street, Gucheng street, Shouguang City, Weifang City, Shandong Province Patentee after: Kangyue Technology (Shandong) Co.,Ltd. Address before: No.01 luoqian street, Shouguang Economic Development Zone, Weifang City, Shandong Province 262700 Patentee before: KANGYUE TECHNOLOGY Co.,Ltd. |
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Denomination of invention: Segmented stroke characteristics of turbocharger pneumatic actuator device Effective date of registration: 20220701 Granted publication date: 20140319 Pledgee: Shandong Shouguang Rural Commercial Bank Co.,Ltd. Pledgor: Kangyue Technology (Shandong) Co.,Ltd. Registration number: Y2022980009719 |