CN108979870B - Conical valve core cavity structure for idle speed control valve - Google Patents
Conical valve core cavity structure for idle speed control valve Download PDFInfo
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- CN108979870B CN108979870B CN201810795434.3A CN201810795434A CN108979870B CN 108979870 B CN108979870 B CN 108979870B CN 201810795434 A CN201810795434 A CN 201810795434A CN 108979870 B CN108979870 B CN 108979870B
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- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010030 laminating Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/04—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling rendering engines inoperative or idling, e.g. caused by abnormal conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
- F02D2700/05—Controlling by preventing combustion in one or more cylinders
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention belongs to the technical field of idle speed control valves, and particularly relates to a conical valve core cavity structure for an idle speed control valve, which comprises a valve cavity with a bypass air hole, a valve core arranged on a linear stepping motor and positioned in the valve cavity, a cavity bottom plate arranged on the valve cavity, a valve hole arranged on the cavity bottom plate and used for being attached and sealed with the valve core, and a valve core wing plate arranged on the valve core and used for limiting the valve core when the valve core is attached and sealed in a mode of abutting against the cavity bottom plate. The idle speed control valve achieves the purpose of effective use by arranging the valve core, the cavity bottom plate, the valve hole and the valve core wing plate on the valve cavity. The invention has the advantages of simple and effective control valve structure, convenient use of the valve core wing plate, good effect and long service life of the valve core.
Description
Technical Field
The invention belongs to the technical field of idle speed control valves, and particularly relates to a conical valve core cavity structure for an idle speed control valve.
Background
The air throttle is a controllable valve for controlling air to enter the engine, and after the air enters the air inlet pipe, the air and gasoline are mixed to become combustible mixed gas, so that the combustible mixed gas is combusted to form work. On the other hand, the idle speed control valve is arranged on a bypass air hole of the throttle valve, and the idle speed controller enables the idle speed control valve to act to increase the engine speed in time when the engine speed is lower than the rated value according to an ignition signal, and stops acting when the engine speed exceeds the rated value.
The common idle speed control valve comprises a rotary electromagnetic valve type and a linear stepping motor type, wherein a linear stepping motor type needle valve does axial telescopic movement, and the purpose of controlled opening and closing of the idle speed control valve is achieved by generally contacting and fitting a conical surface of the linear stepping motor type needle valve with a contact surface on a bypass air hole.
The patent publication number is CN203081593U, and the china utility model patent that the announcement day is 2013.07.24 discloses a rotatory step motor formula idle speed control valve, including the step motor device, the pivot of this step motor device is connected with the piece that opens and shuts, and step motor device internally mounted has step motor, and this step motor's pivot is connected with the gear train that is used for the moment of torsion to enlarge and reduce speed, and the other stop block that is used for carrying out rotation angle spacing to this gear train that is provided with of this gear train, step motor's pivot still is connected with return spring.
However, the valve core structure for the idle speed control valve in the utility model has the problem of poor use effect.
Disclosure of Invention
The invention aims to provide a conical valve core cavity structure for an idle speed control valve, which can achieve the purpose of effectively using the idle speed control valve by arranging a valve core, a cavity bottom plate, a valve hole and a valve core wing plate on a valve cavity. The invention has the advantages of simple and effective control valve structure, convenient use of the valve core wing plate, good effect and long service life of the valve core.
The technical scheme adopted by the invention for solving the problems is as follows: the conical valve core cavity structure for the idle speed control valve comprises a valve cavity provided with a bypass air hole, a valve core arranged on a linear stepping motor and located in the valve cavity, a cavity bottom plate arranged on the valve cavity, a valve hole arranged on the cavity bottom plate and used for being attached and sealed with the valve core, and a valve core wing plate arranged on the valve core and used for playing a limiting role when the valve core is attached and sealed in a mode of abutting against the cavity bottom plate.
The further preferred technical scheme is as follows: the valve hole is a counter bore arranged at the middle position on the cavity bottom plate, a joint ring surface is arranged on the counter bore, the valve core comprises a valve core main body used for arranging the valve core wing plate and connecting the linear stepping motor, a guide column arranged at the front end of the valve core main body, and a main body chamfer ring surface arranged on the valve core main body and used for being jointed with the joint ring surface to form a closed main body chamfer.
The further preferred technical scheme is as follows: the valve core wing plate comprises a mounting plate arranged on the valve core main body and a wing plate main body arranged on the mounting plate, and the main body chamfer ring surface is closer to the guide post than the joint end surface of the wing plate main body.
The further preferred technical scheme is as follows: and the valve core main body is provided with a reinforcing plate and a motor screw hole, wherein the reinforcing plate is connected with the mounting plate and the wing plate main body.
The further preferred technical scheme is as follows: the wing plate main bodies are arranged at the positions on two sides of the mounting plate in pairs, and the cross section of each wing plate main body parallel to the mounting plate is in a fan-shaped or rectangular shape.
The further preferred technical scheme is as follows: and the cavity bottom plate is also provided with bottom plate protruding units for supplementing the elongation after the valve core wing plate is worn, and the two bottom plate protruding units are arranged at the positions on two sides of the valve hole in pairs.
The further preferred technical scheme is as follows: the bottom plate protruding unit comprises a groove formed in the cavity bottom plate, a protruding plate arranged on the groove, a driving stud arranged on the cavity bottom plate, supporting balls arranged on the inner bottom surface of the groove, driving balls arranged on every two supporting balls and used for receiving downward driving force of the driving stud, and jacking balls arranged on every two supporting balls and used for jacking the protruding plate upwards.
The further preferred technical scheme is as follows: the slotting comprises a main body groove and a ball groove, wherein the main body groove is clamped with the protruding plate, the ball groove is arranged at the side position of the main body groove and used for clamping the supporting ball and the driving ball from two sides, a ball frame body used for clamping the supporting ball and the jacking ball from two sides is arranged on the outer side of the ball groove, and the ball frame body is a U-shaped frame body.
The further preferred technical scheme is as follows: the ball bearing frame is provided with a spring groove, and the spring groove is provided with a tension spring used for pulling the convex plate inwards.
The further preferred technical scheme is as follows: the lower end of the driving stud is a semi-spherical end which is abutted against the driving ball, and the driving stud is arranged on the stud groove in a sinking shape.
The idle speed control valve achieves the purpose of effective use by arranging the valve core, the cavity bottom plate, the valve hole and the valve core wing plate on the valve cavity. The invention has the advantages of simple and effective control valve structure, convenient use of the valve core wing plate, good effect and long service life of the valve core.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the valve chamber of the present invention.
Fig. 3 is a schematic view of the position of the protruding unit of the bottom plate in the present invention.
Fig. 4 is a schematic structural view of a base plate protrusion unit according to the present invention.
Fig. 5 is a schematic view showing the use of the ball cage of the present invention.
Detailed Description
The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Example (b): as shown in fig. 1, 2, 3, 4 and 5, a conical valve core cavity structure for an idle speed control valve includes a valve cavity 2 provided with a bypass air hole 1, a valve core 3 arranged on a linear stepping motor and located in the valve cavity 2, a cavity bottom plate 4 arranged on the valve cavity 2, a valve hole 5 arranged on the cavity bottom plate 4 and used for being attached and sealed with the valve core 3, and a valve core wing plate 6 arranged on the valve core 3 and used for limiting when the valve core 3 is attached and sealed by abutting against the cavity bottom plate 4.
In this embodiment, the bypass air hole 1 is ventilated through the valve hole 5, the valve core 3 is attached to and seals the valve hole 5, so as to ensure that the idle speed control valve has the dual effects of stable sealing and controllable opening and closing, and the valve core wing plates 6 are introduced, so that after the valve core 3 is pushed by the linear stepping motor, the valve core wing plates 6 are pressure-bearing stress parts, and the valve core 3 is attached to and sealed parts, so that the impact degree of the valve core 3 is finally reduced, and the service life is greatly prolonged.
The valve hole 5 is a countersunk hole arranged at the middle position on the cavity bottom plate 4, a joint ring surface 7 is arranged on the countersunk hole, the valve core 3 comprises a valve core main body 301 used for arranging the valve core wing plate 6 and connecting the linear stepping motor, a guide column 302 arranged at the front end of the valve core main body 301, and a main body chamfer ring surface 303 arranged on the valve core main body 301 and used for jointing and sealing with the joint ring surface 7.
In this embodiment, linear stepping motor promotes case main part 301 for seal and block up valve opening 5, wherein laminating anchor ring 7 with main part chamfer anchor ring 303 is laminating closed position, wherein just because case pterygoid lamina 6 has born great pressure, makes laminating anchor ring 7 with main part chamfer anchor ring 303 can be laminated with a less and sufficient pressure, guarantees to seal the effect and alleviates the striking degree, prolongs whole greatly idle speed control valve's life, on the other hand, 6 sides of case pterygoid lamina are supported on cavity bottom plate 4, have that the contact surface is big and level, the slow advantage of wearing and tearing speed, compare in prior art the valve opening edge support the mode that "area of contact is little on the case, pressure is powerful", have long service life's advantage.
The valve core wing plate 6 comprises a mounting plate 601 arranged on the valve core main body 301 and a wing plate main body 602 arranged on the mounting plate 601, and the main body chamfer ring surface 303 is closer to the guide column 302 than the joint end surface of the wing plate main body 602. The valve core main body 301 is provided with a reinforcing plate 603 connected with the mounting plate 601 and the wing plate main body 602, and a motor screw hole 8. The two wing main bodies 602 are arranged in pairs at two sides of the mounting plate 601, and the cross section of the wing main body 602 parallel to the mounting plate 601 is in a shape of a sector ring or a rectangle.
In this embodiment, after the linear stepping motor pushes the valve core main body 301, the wing plate main body 602 abuts against the cavity bottom plate 4 with a large force, and meanwhile, the main body chamfer ring surface 303 on the valve core main body 301 is attached to the attachment ring surface 7, so that the purpose of closing the idle speed control valve is achieved, and the purpose of effectively controlling the ventilation volume of the idle speed control valve is achieved through the propulsion amplitude of the linear stepping motor, so that the idle speed control valve is effectively used, wherein the valve core wing plate 6 has the advantages of being stable in installation, large in pressure bearing surface, and good in protection effect on the valve core main body 301, and the problem that the valve core directly collides against the valve hole, and further the service life is shortened is solved.
And the cavity bottom plate 4 is also provided with bottom plate protruding units 9 for supplementing the elongation after the valve core wing plate 6 is worn, and the two bottom plate protruding units 9 are arranged at the positions of two sides of the valve hole 5 in pairs.
In this embodiment, the problem that the length of the valve element wing plate 6 is shortened due to wear occurs after all in the long-term use process, at this time, under the premise that the linear stepping motor does not perform thrust reduction adjustment, the impact force between the valve element main body 301 and the joint ring surface 7 is greatly increased, that is, the joint ring surface 7 gradually becomes a pressure-bearing stressed portion, so that the valve element main body 301 is worn and scrapped rapidly, and finally the valve hole 5 cannot be completely closed, and the whole idle speed control valve loses the use effect, so that the bottom plate protruding unit 9 is used for compensating the wear length of the valve element wing plate 6 in a self-protruding manner, so that the valve element wing plate 6 is always a pressure-bearing stressed portion, and the valve element main body 301 always abuts against the joint ring surface 7 with a constant, small and proper amount of force to achieve effective closure, and the dual advantages of controlling the impact wear within a very small range.
The bottom plate protrusion unit 9 comprises a slot 901 arranged on the cavity bottom plate 4, a protrusion plate 902 arranged on the slot 901, a driving stud 903 arranged on the cavity bottom plate 4, supporting balls 904 arranged on the inner bottom surface of the slot 901, driving balls 905 arranged on two supporting balls 904 and used for receiving the downward driving force of the driving stud 903, and jacking balls 906 arranged on two supporting balls 904 and used for jacking up the protrusion plate 902. The slot 901 comprises a main body groove 901a for clamping and arranging the protruding plate 902, and a ball groove 901b arranged at a side position of the main body groove 901a and used for clamping and arranging the supporting ball 904 and the driving ball 905 from two sides, a ball frame 907 for clamping and arranging the supporting ball 904 and the jacking ball 906 from two sides is arranged outside the ball groove 901b, and the ball frame 907 is a U-shaped frame. The ball frame 907 is provided with a spring slot 908, and the spring slot 908 is provided with a tension spring 909 for pulling the raised plate 902 inward. The lower end of the driving stud 903 is a semi-spherical end which is abutted to the driving ball 905, and the driving stud 903 is arranged on the stud groove 9010 in a sinking shape.
In the present embodiment, the usage and advantages of the bottom plate protruding unit 9 are as follows:
firstly, in an initial state, the abrasion loss of the valve core wing plate 6 is reduced within a certain service life, length supplement is not carried out by using the convex plate 902, the outer side surface of the convex plate 902 is flush with the side surface of the cavity bottom plate 4, the valve core wing plate 6 completely abuts against the side surface of the cavity bottom plate 4, and at the moment, the valve core main body 301 abuts against the fitting ring surface 7 with a small and enough closed force;
secondly, after the idle speed control valve is used for a long time, the contact surface of the wing plate main body 602 of the valve core wing plate 6 is partially worn, the impact force between the valve core main body 301 and the fitting ring surface 7 is increased, and large harmful wear occurs, and the bulge plate 902 rises to just compensate the wear and deformation of the wing plate main body 602, so that the valve core main body 301 is always pressed on the fitting ring surface 7 with a constant, small and proper force, and the sealing effect and the service life are ensured;
thirdly, when the convex plate 902 is at the initial position, the tension spring 909 pulls the convex plate 902 inward, the jacking ball 906 is located at a lower position, the driving ball 905 is located at a higher position, the circular arc at the lower end of the driving stud 903 is abutted to the driving ball 905, and when the convex plate 902 needs to be lifted, the driving stud 903 is rotated downward by using a 'straight-line' screwdriver, so that the driving ball 905 is downward originally, the supporting ball 904 at the middle part is outward, and finally the jacking ball 906 is upward, thereby achieving the purpose of convex adjustment of the convex plate 902;
fourthly, the inner widths of the ball groove 901b and the ball frame 907 correspond to the diameters of the balls, and the heights of the ball groove 901b and the ball frame 907 are enough to control the upper layer and the lower layer of the balls, so that the balls are ensured to have only stable inner and outer reciprocating movement effects, and both sides are prevented from shifting and sliding out;
fifthly, the tension spring 909 is used for pulling the jacking ball 906 downwards after the driving stud 903 is withdrawn upwards, and finally enabling the driving ball 905 to move upwards to wait for the driving stud 903 to be driven downwards again, on the other hand, only the middle of the three supporting balls 904 moves, the supporting balls 904 on two sides are all clamped tightly, and the upper end and the lower end of the tension spring 909 are welded and fixed.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.
Claims (9)
1. The utility model provides a conical valve case chamber structure for idle speed control valve, is including being equipped with valve pocket (2) of bypass air hole (1) to and set up on linear stepping motor and be located case (3) in valve pocket (2), its characterized in that: the valve core is characterized by further comprising a cavity bottom plate (4) arranged on the valve cavity (2), a valve hole (5) arranged on the cavity bottom plate (4) and used for being attached and sealed with the valve core (3), and a valve core wing plate (6) arranged on the valve core (3) and used for limiting when the valve core (3) is attached and sealed in a mode of being abutted against the cavity bottom plate (4);
the valve hole (5) is a counter bore arranged at the middle position on the cavity bottom plate (4), a fitting ring surface (7) is arranged on the counter bore, the valve core (3) comprises a valve core main body (301) used for arranging the valve core wing plate (6) and connecting the linear stepping motor, a guide column (302) arranged at the front end of the valve core main body (301), and a main body chamfer ring surface (303) arranged on the valve core main body (301) and used for fitting with the fitting ring surface (7) to form a closed main body chamfer ring surface.
2. The spool chamber structure for the idle speed control valve according to claim 1, wherein: the valve core wing plate (6) comprises a mounting plate (601) arranged on the valve core main body (301) and a wing plate main body (602) arranged on the mounting plate (601), and the main body chamfer ring surface (303) is closer to the guide column (302) than the attaching end surface of the wing plate main body (602).
3. The spool chamber structure for the idle speed control valve according to claim 2, wherein: and the valve core main body (301) is provided with a reinforcing plate (603) connected with the mounting plate (601) and the wing plate main body (602), and a motor threaded hole (8).
4. The spool chamber structure for the idle speed control valve according to claim 2, wherein: the two wing plate main bodies (602) are arranged at two sides of the mounting plate (601) in pairs, and the cross section of the wing plate main body (602) parallel to the mounting plate (601) is in a fan ring shape or a rectangular shape.
5. The spool chamber structure for the idle speed control valve according to claim 1, wherein: and the cavity bottom plate (4) is also provided with bottom plate protruding units (9) for supplementing the elongation after the valve core wing plate (6) is worn, and the two bottom plate protruding units (9) are arranged at the positions of two sides of the valve hole (5) in pairs.
6. The conical spool chamber structure for the idle speed control valve according to claim 5, wherein: the bottom plate protruding unit (9) comprises a slot (901) arranged on the cavity bottom plate (4), a protruding plate (902) arranged on the slot (901), a driving stud (903) arranged on the cavity bottom plate (4), supporting balls (904) arranged on the inner bottom surface of the slot (901), driving balls (905) arranged on every two supporting balls (904) and used for receiving the downward driving force of the driving stud (903), and jacking balls (906) arranged on every two supporting balls (904) and used for jacking the protruding plate (902) upwards.
7. The conical spool chamber structure for the idle speed control valve according to claim 6, wherein: the slotted groove (901) comprises a main body groove (901 a) for clamping and arranging the convex plate (902) and a ball groove (901 b) which is arranged at the side position of the main body groove (901 a) and is used for clamping and arranging the supporting ball (904) and the driving ball (905) from two sides, a ball frame body (907) for clamping and arranging the supporting ball (904) and the jacking ball (906) from two sides is arranged on the outer side of the ball groove (901 b), and the ball frame body (907) is a U-shaped frame body.
8. The conical spool chamber structure for the idle speed control valve according to claim 7, wherein: the ball frame body (907) is provided with a spring groove (908), and the spring groove (908) is provided with a tension spring (909) used for pulling the raised plate (902) inwards.
9. The conical spool chamber structure for the idle speed control valve according to claim 6, wherein: the lower end of the driving stud (903) is a semi-spherical end which is abutted to the driving ball (905), and the driving stud (903) is arranged on a stud groove (9010) in a sinking shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795434.3A CN108979870B (en) | 2018-07-19 | 2018-07-19 | Conical valve core cavity structure for idle speed control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795434.3A CN108979870B (en) | 2018-07-19 | 2018-07-19 | Conical valve core cavity structure for idle speed control valve |
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| Publication Number | Publication Date |
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| CN108979870A CN108979870A (en) | 2018-12-11 |
| CN108979870B true CN108979870B (en) | 2020-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810795434.3A Active CN108979870B (en) | 2018-07-19 | 2018-07-19 | Conical valve core cavity structure for idle speed control valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112412629B (en) * | 2020-11-27 | 2022-09-20 | 中国航发四川燃气涡轮研究院 | Adjustable telescopic automatic control igniter device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131901A (en) * | 2014-08-10 | 2014-11-05 | 安徽省宁国新鼎汽车零部件有限公司 | Quick transmission idle speed control valve |
| CN206361165U (en) * | 2016-11-30 | 2017-07-28 | 西姆流体技术（上海）有限公司 | A kind of non-equilibrium high sealing regulating valve |
| CN206448878U (en) * | 2016-12-26 | 2017-08-29 | 段旭忠 | A kind of EFI choke valve idle adjusting device |
| CN206957826U (en) * | 2017-05-15 | 2018-02-02 | 瑞安市阳宇机动车零部件有限公司 | Controllable type IAC |
| CN207093892U (en) * | 2017-08-15 | 2018-03-13 | 瑞安市力霸汽车零部件厂 | The stable secure type automobile idle valve of high-performance |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7191755B2 (en) * | 2005-07-13 | 2007-03-20 | Visteon Global Technologies, Inc. | Idle air control valve stepper motor initialization technique |
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2018
- 2018-07-19 CN CN201810795434.3A patent/CN108979870B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131901A (en) * | 2014-08-10 | 2014-11-05 | 安徽省宁国新鼎汽车零部件有限公司 | Quick transmission idle speed control valve |
| CN206361165U (en) * | 2016-11-30 | 2017-07-28 | 西姆流体技术（上海）有限公司 | A kind of non-equilibrium high sealing regulating valve |
| CN206448878U (en) * | 2016-12-26 | 2017-08-29 | 段旭忠 | A kind of EFI choke valve idle adjusting device |
| CN206957826U (en) * | 2017-05-15 | 2018-02-02 | 瑞安市阳宇机动车零部件有限公司 | Controllable type IAC |
| CN207093892U (en) * | 2017-08-15 | 2018-03-13 | 瑞安市力霸汽车零部件厂 | The stable secure type automobile idle valve of high-performance |
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| CN108979870A (en) | 2018-12-11 |
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Denomination of invention: A conical valve core cavity structure for idle speed control valve Effective date of registration: 20220909 Granted publication date: 20201013 Pledgee: Bank of China Limited Xuancheng Branch Pledgor: ANHUI YIHENG TEMPERATURE CONTROL TECHNOLOGY Co.,Ltd. Registration number: Y2022980014960 |
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Date of cancellation: 20231012 Granted publication date: 20201013 Pledgee: Bank of China Limited Xuancheng Branch Pledgor: ANHUI YIHENG TEMPERATURE CONTROL TECHNOLOGY Co.,Ltd. Registration number: Y2022980014960 |
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Denomination of invention: A conical valve core cavity structure for idle speed control valve Effective date of registration: 20231017 Granted publication date: 20201013 Pledgee: Bank of China Limited Xuancheng Branch Pledgor: ANHUI YIHENG TEMPERATURE CONTROL TECHNOLOGY Co.,Ltd. Registration number: Y2023980061366 |
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