CN211951495U - Intelligent control electromagnetic valve of engine piston cooling system - Google Patents
Intelligent control electromagnetic valve of engine piston cooling system Download PDFInfo
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- CN211951495U CN211951495U CN202020247187.6U CN202020247187U CN211951495U CN 211951495 U CN211951495 U CN 211951495U CN 202020247187 U CN202020247187 U CN 202020247187U CN 211951495 U CN211951495 U CN 211951495U
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- 238000001816 cooling Methods 0.000 title claims abstract description 24
- 230000005389 magnetism Effects 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 14
- 238000002955 isolation Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 2
- 230000004907 flux Effects 0.000 claims 2
- 238000002360 preparation method Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 21
- 239000010705 motor oil Substances 0.000 abstract description 18
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses an engine piston cooling system intelligent control solenoid valve, include: the electromagnetic valve comprises an electromagnet device, a valve device and a mandril for transmitting the electromagnetic force of the electromagnet device to the valve device; the electromagnet device comprises an electromagnetic coil, a shell, a magnetism isolating sleeve, an upper magnetic yoke and a lower magnetic yoke, wherein a movable armature is arranged in the magnetism isolating sleeve and is in sliding fit with the magnetism isolating sleeve; the valve device comprises a valve body, a valve core and a return spring, the valve body and the lower magnetic yoke are integrally arranged, and the ejector rod abuts against between the movable armature and the valve core; the valve core is provided with a pressure balance hole which is communicated with the inner cavities of the valve body at the two ends of the valve core. Under the condition that the flow of the engine oil is not too large, the oil pressures at the upper end and the lower end of the valve core can be basically kept balanced, the movement of the valve core is not influenced by the oil pressure of the engine oil, and the position of the valve core can be accurately controlled by controlling electromagnetic force and setting spring force, so that the cooling flow of the piston can be accurately controlled.
Description
Technical Field
The utility model relates to a solenoid valve technical field especially relates to an intelligent control solenoid valve for engine piston cooling system.
Background
With the application of technologies such as turbocharging and high compression ratio, the combustion temperature of an engine is higher and higher, the environment temperature of a piston is also higher and higher, the detonation phenomenon is easy to occur, and the lubrication, the service life and the smoothness of the engine are adversely affected. The engine piston cooling system can cool the engine piston, and can effectively reduce piston abrasion, prolong the service life of the piston and ensure the stable operation of the engine. The control components of the known piston cooling system are mostly mechanical switch valves or electromagnetic switch valves, the switch valves can only control the opening and closing of an oil channel of the piston engine, the flow can not be accurately adjusted according to the working condition of the engine, the piston of the engine is easily overcooled in a cold state, the proper temperature which is beneficial to mixed gas combustion is formed in a combustion chamber, the exhaust emission is deteriorated, and the like, and along with the promotion of the national emission requirement of the engine, the crude piston cooling control mode can not meet the requirement.
The Chinese invention patent CN109237108A discloses an electromagnetic control valve for an engine piston cooling system, which comprises a valve sleeve structure and an electromagnetic coil structure, wherein the electromagnetic coil structure is arranged above the valve sleeve structure, the valve sleeve of the valve sleeve structure is a columnar hollow structure and is provided with a front-end oil inlet, an oil outlet is arranged on the peripheral side of the valve sleeve, a spring, a valve core and a thimble are arranged in the valve sleeve, and the valve core can axially reciprocate in the valve sleeve; the inner side of the shell of the electromagnetic coil structure is provided with a coil, the inner side of the coil is provided with an inner cover, the inner side of the inner cover is provided with a plunger, and the plunger is fixed at the top of the thimble. The electromagnetic control valve sends out an instruction through the ECU according to the working condition of the engine, and the flow of the engine oil flowing to the cooling nozzle is accurately controlled, so that the problem that the engine piston is excessively cooled in a cold state is solved.
However, the above-mentioned solenoid-operated valve has the following drawbacks in practical use:
1) the valve core is influenced by the oil pressure of the engine oil besides the electromagnetic force and the spring elasticity, and under the action of the same electromagnetic force, different oil pressures can lead to different strokes of the valve core, so that the flow of the engine oil is different, and the regulation and control precision of the temperature of the piston can be reduced.
2) The plunger is fixed at the top of the ejector pin, when the plunger moves axially in the inner cover, the ejector pin moves axially in the central through hole of the electromagnet shell, and the plunger and the ejector pin are fixedly connected, so that the requirement on the coaxiality of the plunger and the ejector pin is high, otherwise, the eccentric wear of the ejector pin on the central through hole of the electromagnet shell can be caused, and the clamping stagnation of the ejector pin can be caused.
SUMMERY OF THE UTILITY MODEL
The above-mentioned not enough to prior art, the utility model provides an engine piston cooling system intelligent control solenoid valve to the valve core receives the engine oil pressure easily to influence in solving the solenoid valve, reduces the problem of piston temperature regulation and control precision.
In order to solve the technical problem, the utility model discloses a technical scheme is:
an engine piston cooling system intelligent control solenoid valve, comprising: the electromagnetic valve comprises an electromagnet device, a valve device and a mandril for transmitting electromagnetic force generated by the electromagnet device to the valve device; the electromagnet device comprises an electromagnetic coil, a shell is arranged on the outer side of the electromagnetic coil, a magnetism isolating sleeve is arranged on the inner side of the electromagnetic coil, an upper magnetic yoke is arranged at the upper end of the electromagnetic coil, a lower magnetic yoke is arranged at the lower end of the electromagnetic coil, a movable armature is arranged in the magnetism isolating sleeve, and the movable armature is in sliding fit with the magnetism isolating sleeve; the valve device comprises a valve body, the valve body and the lower magnetic yoke are integrally arranged, the lower magnetic yoke part of the valve body is provided with an inner connecting part and an outer connecting part, the outer connecting part is fixedly connected with the shell, and the inner connecting part extends into the magnetic isolation sleeve and is in sealing connection with the magnetic isolation sleeve; the valve body is provided with a valve body inner cavity, the lower end part of the valve body is provided with an oil inlet, the side peripheral wall of the valve body is provided with an oil outlet, the oil inlet and the oil outlet are respectively communicated with the valve body inner cavity, a valve core and a reset spring are arranged in the valve body inner cavity, the valve core is in sliding fit with a guide hole in the valve body inner cavity, a lower magnetic yoke part of the valve body is provided with a central through hole, and the central through hole is communicated with the valve body inner cavity; the ejector rod extends into the inner cavity of the valve body from the central through hole of the valve body and abuts against the position between the movable armature and the valve core; and the center of the valve core is provided with a pressure balance hole which is communicated with the inner cavities of the valve bodies at the two ends of the valve core.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
1) because the valve core is provided with the pressure balance hole which is communicated with the inner cavities of the valve body at the two ends of the valve core, under the condition that the engine oil flow is not too large (generally not more than 30L/min), the oil pressure at the upper end and the lower end of the valve core can be basically kept balanced, the movement of the valve core is not influenced by the oil pressure of the engine oil, the position of the valve core can be accurately controlled by controlling the electromagnetic force and setting the spring force, so that the engine oil flow can be accurately controlled, and the regulation and control precision of the piston temperature is improved. When the engine is just started to warm up, the piston does not need to be cooled, the electromagnetic valve keeps a closed state, and engine oil does not cool the piston; when the engine is in an idling state or a small working condition state, the electromagnetic valve can be opened and kept at a certain small flow rate to provide cooling engine oil with a proper flow rate for the piston; when the engine runs at high load, the electromagnetic valve is fully opened, and the cooling engine oil with the maximum flow is provided for the piston.
2) Because the valve body and the lower magnetic yoke are integrally arranged, on one hand, a central through hole for the ejector rod to pass through can be longer, so that the guiding property is better; on the other hand, the engine oil which flows out of the inner cavity of the valve body through the central through hole can be sealed only by one sealing ring, so that the space is greatly saved, and the assembly process times are reduced.
3) The ejector rod extends into the inner cavity of the valve body from the central through hole of the valve body and abuts against the position between the movable armature and the valve core, the ejector rod is not fixedly connected with the movable armature, and the coaxiality requirement does not exist between the ejector rod and the movable armature, so that the manufacturing cost is reduced.
Drawings
FIG. 1 is a sectional view of an embodiment of an intelligent control solenoid valve of an engine piston cooling system according to the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
in the figure, 10-shell, 11-electromagnetic coil, 12-movable armature, 13-magnetism isolating sleeve, 14-upper magnetic yoke, 15-first sealing ring, 16-second sealing ring, 17-third sealing ring, 20-ejector rod, 30-valve body, 31-valve core, 32-return spring, 301-oil inlet, 302-oil outlet, 311-pressure balancing hole and C-magnetic circuit.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. The term "upper" and "lower" in the present invention refer to the orientation of the solenoid valve in the use state, which is convenient for description and understanding, and should not be interpreted as limitations to the corresponding technical features of the present invention.
As shown in fig. 1 and fig. 2 together, an intelligent control solenoid valve for an engine piston cooling system is installed in an engine oil passage and cools an engine piston by using engine oil of an engine. The solenoid valve includes an electromagnet device, a valve device, and a plunger 20 for transmitting electromagnetic force generated by the electromagnet device to the valve device.
The electromagnet device comprises an electromagnetic coil 11, a shell 10 is arranged on the outer side of the electromagnetic coil 11, a magnetism isolating sleeve 13 is arranged on the inner side of the electromagnetic coil 11, and the magnetism isolating sleeve 13 is made of stainless steel. An upper magnetic yoke 14 is arranged at the upper end of the electromagnetic coil 11, the upper magnetic yoke 14 is a plate-shaped magnetic conduction plate and is arranged between the shell 10 and the end part of the electromagnetic coil 11, and a third sealing ring 17 is arranged between the shell 10 and the upper magnetic yoke 14 and is used for preventing outside dirt from entering. The lower end of the electromagnetic coil 11 is provided with a lower magnetic yoke (the lower magnetic yoke is integrated with the valve body 30, and the specific structure will be described in detail below), the magnetic isolation sleeve 13 is provided with a movable armature 12, and the movable armature 12 is in sliding fit with the magnetic isolation sleeve 13. The magnetic isolation sleeve 13 can be used as a guide structure for the sliding of the movable armature 12 and can play a role in magnetic isolation, so that magnetic lines of force can only pass through a magnetic circuit C comprising the electromagnetic coil 11, the movable armature 12, the upper magnetic yoke 14 and the lower magnetic yoke, and the leakage of the magnetic lines of force is reduced.
The valve device comprises a valve body 30, the valve body 30 and the lower magnetic yoke are integrally arranged, the lower magnetic yoke part of the valve body 30 is provided with an inner connecting part and an outer connecting part, the outer peripheral surface of the outer connecting part extends into the inner peripheral surface of the shell 10 and is in interference connection, and the connecting mode is simple and firm and is not easy to disengage. The inner connecting part extends into the magnetic isolation sleeve 13 and is connected with the magnetic isolation sleeve in a sealing mode through a first sealing ring 15. A second seal ring 16 for preventing contaminants from entering is provided between the external connection portion and the electromagnetic coil 11. Because the valve body 30 and the lower magnetic yoke are integrally arranged, on one hand, the central through hole for the ejector rod 20 to pass through can be longer (compared with the central through hole in the Chinese patent CN 109237108A), so that the guiding property is better; on the other hand, only the first sealing ring 15 is needed to seal the engine oil flowing out from the central through hole in the inner cavity of the valve body, and compared with the Chinese patent CN109237108A (the static armature needs to be sealed with the electromagnetic coil, and the valve sleeve needs to be sealed with the electromagnetic coil), the sealing is enough for one time, so that the space is greatly saved, and the assembly process times are also reduced.
The valve body 30 is provided with a valve body inner cavity, the lower end part of the valve body 30 is provided with an oil inlet 301, the side peripheral wall of the valve body 30 is provided with an oil outlet 302, the oil inlet 301 and the oil outlet 302 are respectively communicated with the valve body inner cavity, the valve core 31 and a reset spring 32 are arranged in the valve body inner cavity, the valve core 31 is in sliding fit with a guide hole in the valve body inner cavity, the lower magnetic yoke part of the valve body 30 is provided with a central through hole, and the central through hole is. The ejector rod 20 extends into the inner cavity of the valve body from the central through hole of the valve body 30 and abuts against between the movable armature 12 and the valve core 31, the ejector rod 20 is not fixedly connected with the movable armature 12, and the coaxiality between the movable armature 12 and the ejector rod is not required, so that the manufacturing cost is reduced.
The center of the valve core 31 is provided with a pressure balance hole 311, the pressure balance hole 311 is communicated with the valve body inner cavities at the upper end and the lower end of the valve core 31, and the pressure balance hole 311 comprises an axial hole and a radial hole which are communicated with each other. Under the condition that the flow of the engine oil is not too large (generally, the flow does not exceed 30L/min), the oil pressure at the upper end and the lower end of the valve core can be basically kept balanced, the movement of the valve core cannot be influenced by the oil pressure of the engine oil, and the position of the valve core can be accurately controlled by controlling electromagnetic force and setting spring force, so that the flow can be accurately controlled, and the regulation and control precision of the temperature of the piston is improved.
The present invention is not limited to the above embodiments, and all improvements based on the concept, principle, structure and method of the present invention will fall within the protection scope of the present invention.
Claims (8)
1. An engine piston cooling system intelligent control solenoid valve, comprising:
the electromagnetic valve comprises an electromagnet device, a valve device and a mandril for transmitting electromagnetic force generated by the electromagnet device to the valve device;
the electromagnet device comprises an electromagnetic coil, a shell is arranged on the outer side of the electromagnetic coil, a magnetism isolating sleeve is arranged on the inner side of the electromagnetic coil, an upper magnetic yoke is arranged at the upper end of the electromagnetic coil, a lower magnetic yoke is arranged at the lower end of the electromagnetic coil, a movable armature is arranged in the magnetism isolating sleeve, and the movable armature is in sliding fit with the magnetism isolating sleeve;
the valve device comprises a valve body, the valve body and the lower magnetic yoke are integrally arranged, the lower magnetic yoke part of the valve body is provided with an inner connecting part and an outer connecting part, the outer connecting part is fixedly connected with the shell, and the inner connecting part extends into the magnetic isolation sleeve and is in sealing connection with the magnetic isolation sleeve; the valve body is provided with a valve body inner cavity, the lower end part of the valve body is provided with an oil inlet, the side peripheral wall of the valve body is provided with an oil outlet, the oil inlet and the oil outlet are respectively communicated with the valve body inner cavity, a valve core and a reset spring are arranged in the valve body inner cavity, the valve core is in sliding fit with a guide hole in the valve body inner cavity, a lower magnetic yoke part of the valve body is provided with a central through hole, and the central through hole is communicated with the valve body inner cavity;
the ejector rod extends into the inner cavity of the valve body from the central through hole of the valve body and abuts against the position between the movable armature and the valve core; it is characterized in that the preparation method is characterized in that,
and the center of the valve core is provided with a pressure balance hole which is communicated with the inner cavities of the valve body at the upper end and the lower end of the valve core.
2. The engine piston cooling system intelligent control solenoid valve of claim 1, wherein said pressure balance bore comprises an axial bore and a radial bore in communication with each other.
3. The intelligent control electromagnetic valve for the engine piston cooling system according to claim 1, wherein a first sealing ring is arranged between the inner connecting part and the magnetism isolating sleeve.
4. The intelligent control solenoid valve for an engine piston cooling system of claim 1, wherein a second sealing ring is disposed between said external connection portion and said solenoid coil.
5. The intelligent control solenoid valve for an engine piston cooling system of claim 1, wherein said upper yoke is a plate-like magnetically permeable plate disposed between said housing and an end of said electromagnetic coil.
6. The intelligent control solenoid valve for an engine piston cooling system of claim 5, wherein a third sealing ring is disposed between the housing and the upper yoke.
7. The intelligent control solenoid valve for an engine piston cooling system of claim 1, wherein an outer peripheral surface of the outer connecting portion extends into an inner peripheral surface of the housing and is interference-connected.
8. The intelligent control solenoid valve of engine piston cooling system of claim 1 wherein said flux barrier is a stainless steel flux barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020247187.6U CN211951495U (en) | 2020-03-03 | 2020-03-03 | Intelligent control electromagnetic valve of engine piston cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020247187.6U CN211951495U (en) | 2020-03-03 | 2020-03-03 | Intelligent control electromagnetic valve of engine piston cooling system |
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| CN211951495U true CN211951495U (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020247187.6U Active CN211951495U (en) | 2020-03-03 | 2020-03-03 | Intelligent control electromagnetic valve of engine piston cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664702A (en) * | 2020-12-14 | 2021-04-16 | 西安航天动力研究所 | Miniaturized low-temperature electromagnetic control valve with long service life and adjustable flow |
| CN115388192A (en) * | 2021-09-26 | 2022-11-25 | 广东骏驰科技股份有限公司 | Normally closed piston cooling control electromagnetic valve |
-
2020
- 2020-03-03 CN CN202020247187.6U patent/CN211951495U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664702A (en) * | 2020-12-14 | 2021-04-16 | 西安航天动力研究所 | Miniaturized low-temperature electromagnetic control valve with long service life and adjustable flow |
| CN115388192A (en) * | 2021-09-26 | 2022-11-25 | 广东骏驰科技股份有限公司 | Normally closed piston cooling control electromagnetic valve |
| CN115388192B (en) * | 2021-09-26 | 2023-12-29 | 广东骏驰科技股份有限公司 | Normally closed type piston cooling control electromagnetic valve |
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