CN204459276U - Diesel engine electromagnetic valve for braking - Google Patents
Diesel engine electromagnetic valve for braking Download PDFInfo
- Publication number
- CN204459276U CN204459276U CN201420834656.9U CN201420834656U CN204459276U CN 204459276 U CN204459276 U CN 204459276U CN 201420834656 U CN201420834656 U CN 201420834656U CN 204459276 U CN204459276 U CN 204459276U
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- China
- Prior art keywords
- rod
- oil
- valve body
- braking
- lower push
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- Expired - Fee Related
Links
- 239000003921 oil Substances 0.000 claims abstract description 81
- 239000002283 diesel fuel Substances 0.000 claims abstract description 15
- 239000000295 fuel oil Substances 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000446 fuel Substances 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010710 diesel engine oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model relates to a kind of diesel engine electromagnetic valve for braking, it comprises valve body, the both sides of valve body offer the filler opening that can be communicated with secondary fuel oil filter and the oil outlet that can be communicated with high pressure oil pump respectively, valve body also offers the return opening that can be communicated with diesel fuel tanks in the side offering oil outlet, the bottom of valve body is vertically arranged with public oil pocket, filler opening, oil outlet and return opening are all communicated with public oil pocket, in public oil pocket, longitudinal sliding motion is provided with lower push-rod and the middle part of this lower push-rod is provided with the sealed valve core can selecting a closedown oil outlet and return opening, Compress Spring is connected with between the bottom of lower push-rod and the interior diapire of public oil pocket, the top of lower push-rod is connected with the electromagnetic drive mechanism for driving it to move down.The utility model structure is simple, having stable behavior is reliable, can simplify diesel oil oil supply system structure, reduce cost of production, avoid Leakage and can increase low pressure fuel pipe working life.
Description
Technical field
The utility model relates to diesel engine oil transportation control field, specifically a kind of diesel engine electromagnetic valve for braking.
Background technique
In the oil transportation mechanism of diesel engine, oil transfer pump to be fixed on high pressure oil pump and by the camshaft actuated of high pressure oil pump, during work, oil transfer pump is from diesel fuel tanks sucking-off diesel oil, impurity in the preliminary filtering diesel oil of fuel preliminary filter, then send into secondary fuel oil filter, through the further filtration of secondary fuel oil filter, diesel oil enters electromagnetic valve for braking by low pressure fuel pipe, then enter high pressure oil pump, feed oil sprayer through high-pressure oil pipe.When needing to shut down, close electromagnetic valve for braking, fuel oil can not arrive high pressure oil pump, thus diesel engine oil-cut is shut down.
For existing electromagnetic valve for braking, there is electromagnetic coil its electromagnetic valve body inside, and electromagnetic coil controls its moving core be wound around by energising and power-off and moves up and down thus control the break-make of filler opening and oil outlet, and solenoid valve bracket and electromagnetic valve body 1 are made as one.Existing electromagnetic valve for braking is equivalent to the effect of a fuel path switch, and it stops in emergency in order to control diesel engine for directly cutting off fuel feeding path, have the function of safety protection.
In use there is following defect in existing electromagnetic valve for braking: when 1) electromagnetic valve for braking is closed, although the fuel oil entering high pressure oil pump is interrupted, but high pressure oil pump still has a small amount of residual fuel oil, diesel engine can not be shut down at once, therefore, in the short time after electromagnetic valve for braking is closed, oil transfer pump still works on, thus causes the pressure of oil transfer pump and electromagnetic valve for braking mesolow oil circuit to increase rapidly, easily cause low pressure fuel pipe to damage, affect the working life of low pressure fuel pipe; 2) in order to avoid the fuel pressure in low pressure oil way when electromagnetic valve for braking is closed is excessive, with relief valve, thus must add the cost of diesel engine in secondary fuel oil filter, meanwhile, relief valve is not closed completely and easily produces oil leakage phenomenon.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of diesel engine electromagnetic valve for braking, this electromagnetic valve structure is simple, having stable behavior is reliable, can simplify diesel oil oil supply system structure, reduce cost of production, avoid Leakage and can increase low pressure fuel pipe working life.
For solving the problems of the technologies described above, diesel engine electromagnetic valve for braking of the present utility model comprises valve body, the both sides of valve body offer the filler opening that can be communicated with secondary fuel oil filter and the oil outlet that can be communicated with high pressure oil pump respectively, its structural feature is that described valve body also offers the return opening that can be communicated with diesel fuel tanks in the side offering oil outlet, the bottom of valve body is vertically arranged with public oil pocket, described filler opening, oil outlet and return opening are all communicated with public oil pocket, in public oil pocket, longitudinal sliding motion is provided with lower push-rod and the middle part of this lower push-rod is provided with the sealed valve core can selecting a closedown oil outlet and return opening, Compress Spring is connected with between the bottom of lower push-rod and the interior diapire of public oil pocket, the top of lower push-rod is connected with the electromagnetic drive mechanism for driving it to move down.
Described electromagnetic drive mechanism comprise the upper push-rod, the flip sleeve that are connected with the top of lower push-rod to be contained on upper push-rod and and be connected with between valve body return spring contact disc, be fixed in upper push-rod top electromagnetic core and to be wrapped on valve body and ring is located at electromagnetic coil around electromagnetic core.
Described contact disc comprises the annular edge that a sleeve and ring are located at sleeve bottom end, and described return spring is connected to annular along upper, and valve body is provided with dish seat in the bottom on annular edge.
The bottom of described lower push-rod is connected with the lower seal pad adapted with the shape of cross section of public oil pocket, and the bottom surface of lower seal pad and the interior diapire of public oil pocket offer groove respectively, and described Compress Spring is arranged in above-mentioned two grooves.
The top of described lower push-rod is connected with can by the upper sealing gasket of the top seal of public oil pocket, and the bottom of upper push-rod is connected with upper sealing gasket.
The beneficial effects of the utility model are: on electromagnetic valve for braking, increase return opening, eliminate the structure of relief valve of secondary fuel oil filter, reduce cost of production; Solve secondary fuel oil filter fuel overflow valve arrangement to be not closed completely the problem of easy oil leakage; After eliminating electromagnetic valve for braking closedown, in low pressure fuel pipe, oil pressure increases the stage rapidly, improves the working life of low pressure fuel pipe; Have employed the structure of ball valve, better than the solenoid valve sealability of traditional linear sealing, extend working life; The instantaneous charged conventional solenoid valve that avoids of electromagnetic coil cannot work because of long-term charged easy burning coil, thus extends working life further; Filler opening, oil outlet and return opening all adopt bypass structure, do not do requirement to the turbidity test of medium diesel oil, improve versatility and practicability.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the theory diagram of the utility model in diesel oil oil supply system;
Fig. 2 is the structural representation of the utility model opening state;
Fig. 3 is the structural representation of the utility model closed condition.
Embodiment
With reference to accompanying drawing, a kind of mode of execution of diesel engine electromagnetic valve for braking of the present utility model comprises valve body 1, the both sides of valve body 1 offer the filler opening 2 that can be communicated with secondary fuel oil filter and the oil outlet 3 that can be communicated with high pressure oil pump respectively, valve body 1 also offers the return opening 4 that can be communicated with diesel fuel tanks in the side offering oil outlet 3, the bottom of valve body 1 is vertically arranged with public oil pocket 5, filler opening 2, oil outlet 3 and return opening 4 are all communicated with public oil pocket 5, in public oil pocket 5, longitudinal sliding motion is provided with lower push-rod 6 and the middle part of this lower push-rod 6 is provided with the sealed valve core 7 can selecting a closedown oil outlet 3 and return opening 4.What is called is selected a closedown and is referred in oil outlet and return opening, one can only be had to be communicated with public oil pocket, or oil outlet is communicated with public oil pocket, be now solenoid valve opening state, or return opening is communicated with public oil pocket, is now closed electromagnetic valve state.Be connected with Compress Spring 8 between the bottom of lower push-rod 6 and the interior diapire of public oil pocket 5, the top of lower push-rod 6 is connected with the electromagnetic drive mechanism for driving it to move down.
With reference to accompanying drawing, electromagnetic drive mechanism comprise the upper push-rod 9, the flip sleeve that are connected with the top of lower push-rod 6 to be contained on upper push-rod 9 and and be connected with between valve body return spring 10 contact disc 11, be fixed in upper push-rod 9 top electromagnetic core 12 and to be wrapped on valve body 1 and ring is located at electromagnetic coil 13 around electromagnetic core 12.Contact disc 11 comprises a sleeve 111 and ring is located at the annular of sleeve 111 bottom along 112, and return spring 10 is connected to annular along on 112, and valve body 1 is provided with dish seat 14 in the bottom of annular along 112.
With reference to accompanying drawing, the bottom of lower push-rod 6 is connected with the lower seal pad 15 adapted with the shape of cross section of public oil pocket 5, and the bottom surface of lower seal pad 15 and the interior diapire of public oil pocket 5 offer groove 16 respectively, and Compress Spring 8 is arranged in above-mentioned two grooves 16.Lower seal pad, for isolating the Compress Spring of public oil pocket and bottom, avoids diesel oil to affect the compression performance of spring.
With reference to accompanying drawing, the top of lower push-rod 6 is connected with can by the upper sealing gasket 17 of the top seal of public oil pocket 5, and the bottom of upper push-rod 9 is connected with upper sealing gasket 17.Upper sealing gasket is used for the electromagnetic drive mechanism on top and public oil pocket to isolate, and avoids diesel oil upwards to infiltrate.
During electromagnetic valve for braking normal working: during electromagnetic valve for braking no electric circuit, electromagnetic coil 13 no electric circuit, electromagnetic core 12 non-electromagnetic-force produces, and contact disc 11 is pressed on dish seat 14 under return spring 10 acts on; Lower push-rod 6 drives sealed valve core 7 to be sealed into the path of hydraulic fluid port 2 and oil outlet 3 under the elastic force effect of holddown spring 8, and fuel oil is from filler opening 2 to oil outlet 3, and diesel engine normally works.
Electromagnetic valve for braking shuts down working state: during electromagnetic valve for braking energising; electromagnetic coil 13 is energized; electromagnetic core 12 produces electromagnetic force and contact disc 11 is mentioned from dish seat 14; return spring 10 compresses and produces elastic force; electromagnetic force produces reaction force to electromagnetic core 12; electromagnetic core 12 drives upper push-rod 9 to move down under the effect of reaction force; lower push-rod 6 drives sealed valve core 7 to move down under the promotion of upper push-rod 9; filler opening 2 and oil outlet 3 disconnect; fuel oil gets back to return opening 4 from filler opening 2; now Injection Pump oil-break, diesel engine stop.
In the utility model, electromagnetic valve for braking increases return opening, eliminate the structure of relief valve of secondary fuel oil filter, reduce cost of production.Solve secondary fuel oil filter fuel overflow valve arrangement to be not closed completely the problem of easy oil leakage.After eliminating electromagnetic valve for braking closedown, in low pressure fuel pipe, oil pressure increases the stage rapidly, improves the working life of low pressure fuel pipe.For the internal structure of electromagnetic valve for braking, adopt ball valve, better than the solenoid valve sealability of traditional linear sealing, extend working life.The instantaneous charged conventional solenoid valve that avoids of electromagnetic coil 13 cannot work because of long-term charged easy burning coil, thus extends working life further.Filler opening 2, oil outlet 3 and return opening 4 all adopt bypass structure, do not do requirement to the turbidity test of medium diesel oil, improve versatility and practicability.
In sum, the utility model is not limited to above-mentioned embodiment.Those skilled in the art, under the prerequisite not departing from spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.
Claims (5)
1. a diesel engine electromagnetic valve for braking, comprise valve body (1), the both sides of valve body (1) offer the filler opening (2) that can be communicated with secondary fuel oil filter and the oil outlet (3) that can be communicated with high pressure oil pump respectively, it is characterized in that described valve body (1) also offering the return opening (4) that can be communicated with diesel fuel tanks in the side offering oil outlet (3), the bottom of valve body (1) is vertically arranged with public oil pocket (5), described filler opening (2), oil outlet (3) is all communicated with public oil pocket (5) with return opening (4), public oil pocket (5) interior longitudinal sliding motion is provided with lower push-rod (6) and the middle part of this lower push-rod (6) is provided with the sealed valve core (7) can selecting a closedown oil outlet (3) and return opening (4), Compress Spring (8) is connected with between the bottom of lower push-rod (6) and the interior diapire of public oil pocket (5), the top of lower push-rod (6) is connected with the electromagnetic drive mechanism for driving it to move down.
2. diesel engine electromagnetic valve for braking as claimed in claim 1, it is characterized in that described electromagnetic drive mechanism comprise the upper push-rod (9), the flip sleeve that are connected with the top of lower push-rod (6) be contained in upper push-rod (9) upper and and be connected with between valve body return spring (10) contact disc (11), be fixed in upper push-rod (9) top electromagnetic core (12) and to be wrapped on valve body (1) and ring is located at electromagnetic coil (13) around electromagnetic core (12).
3. diesel engine electromagnetic valve for braking as claimed in claim 2, it is characterized in that described contact disc (11) comprises a sleeve (111) and ring is located at the annular of sleeve (111) bottom along (112), described return spring (10) is connected to annular on (112), and valve body (1) is provided with dish seat (14) in the bottom of annular edge (112).
4. diesel engine electromagnetic valve for braking as claimed in claim 1, it is characterized in that the bottom of described lower push-rod (6) is connected with the lower seal pad (15) adapted with the shape of cross section of public oil pocket (5), the bottom surface of lower seal pad (15) and the interior diapire of public oil pocket (5) offer groove (16) respectively, and described Compress Spring (8) is arranged in above-mentioned two grooves (16).
5. diesel engine electromagnetic valve for braking as claimed in claim 1, it is characterized in that the top of described lower push-rod (6) is connected with can by the upper sealing gasket (17) of the top seal of public oil pocket (5), and the bottom of upper push-rod (9) is connected with upper sealing gasket (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420834656.9U CN204459276U (en) | 2014-12-25 | 2014-12-25 | Diesel engine electromagnetic valve for braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420834656.9U CN204459276U (en) | 2014-12-25 | 2014-12-25 | Diesel engine electromagnetic valve for braking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204459276U true CN204459276U (en) | 2015-07-08 |
Family
ID=53666161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420834656.9U Expired - Fee Related CN204459276U (en) | 2014-12-25 | 2014-12-25 | Diesel engine electromagnetic valve for braking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204459276U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194239A (en) * | 2018-02-09 | 2018-06-22 | 南京威孚金宁有限公司 | A kind of automatically controlled VE types dispensing pump and its flameout method |
| CN114687898A (en) * | 2022-02-21 | 2022-07-01 | 河南柴油机重工有限责任公司 | Diesel engine emergency stop valve and control strategy |
-
2014
- 2014-12-25 CN CN201420834656.9U patent/CN204459276U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194239A (en) * | 2018-02-09 | 2018-06-22 | 南京威孚金宁有限公司 | A kind of automatically controlled VE types dispensing pump and its flameout method |
| CN114687898A (en) * | 2022-02-21 | 2022-07-01 | 河南柴油机重工有限责任公司 | Diesel engine emergency stop valve and control strategy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 |