CN210087520U - Improved structure fuel injection pump for preventing diesel oil of diesel engine from blackening - Google Patents
Improved structure fuel injection pump for preventing diesel oil of diesel engine from blackening Download PDFInfo
- Publication number
- CN210087520U CN210087520U CN201822203273.2U CN201822203273U CN210087520U CN 210087520 U CN210087520 U CN 210087520U CN 201822203273 U CN201822203273 U CN 201822203273U CN 210087520 U CN210087520 U CN 210087520U
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- Prior art keywords
- oil
- engine
- diesel
- pump
- cavity
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- 239000002283 diesel fuel Substances 0.000 title claims abstract description 51
- 238000002347 injection Methods 0.000 title claims abstract description 25
- 239000007924 injection Substances 0.000 title claims abstract description 25
- 239000000446 fuel Substances 0.000 title claims abstract description 11
- 239000003921 oil Substances 0.000 claims abstract description 108
- 239000010705 motor oil Substances 0.000 claims abstract description 77
- 238000009434 installation Methods 0.000 claims description 28
- 230000001050 lubricating effect Effects 0.000 claims description 17
- 238000005461 lubrication Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000010721 machine oil Substances 0.000 abstract description 36
- 238000003860 storage Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 239000010687 lubricating oil Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses an improved structure fuel injection pump for preventing diesel oil of a diesel engine from blackening, which comprises a high-pressure oil pump body connected with the engine; a plurality of sets of electric control monoblock pumps are arranged in parallel in the high-pressure oil pump body, and electromagnetic valve components and control valve components are arranged in the electric control monoblock pumps; the oil inlet amount of the engine oil is limited by adopting a single-hole engine oil throttling oil inlet screw and a single-hole engine oil inlet pump body, an engine oil flowing groove is formed in the pump body to increase the flowing lubricity of the engine oil between cylinders of an oil injection pump, and an engine oil drain hole in the pump body and a bearing cover part with an enlarged oil return hole accelerate a plurality of engine oil in the oil injection pump to flow out into a diesel engine, so that the liquid level of the engine oil of the oil injection pump is effectively reduced, and the engine oil is prevented from being connected with a diesel cavity of a single combined pump; be equipped with the lubricated oil storage chamber of plunger and oil gallery on the plunger chamber, the effect of lubricated plunger can also effectually be played to the diesel oil chamber in-process through the oil gallery to the prevention gets into to the diesel oil chamber with machine oil to prevent that machine oil from getting into, can effectively avoid diesel vehicle diesel oil blacking trouble to appear.
Description
Technical Field
The utility model relates to a diesel engine's high-pressure oil pump technical field, in particular to be applied to preventing that diesel engine diesel oil from becoming black and improving structure injection pump among fuel injection system.
Background
The existing electronic control unit combination pump belongs to a forced lubrication mode for lubrication, the engine oil pressure is determined by an engine oil pump, the engine oil pressure is generally relatively high, too much engine oil enters an oil injection pump, and the engine oil is gradually blackened after running for 50 hours in a diesel engine. If the electric control unit combination pump does not well perform the control of reducing the oil inlet amount of engine oil and limiting the engine oil from entering the diesel oil, the engine oil can enter the diesel oil cavity from the engine oil cavity in the electric control unit combination pump, so that the diesel oil blackening fault in the market is frequent.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that solve is to the machine oil chamber cluster of machine oil in the current diesel engine from the monoblock combination pump and is gone into the diesel oil chamber and lead to diesel oil blackened problem and provide a fuel injection pump that prevents diesel vehicle diesel oil blackened.
The utility model discloses the technical problem that will solve can realize through following technical scheme:
the utility model provides a prevent that diesel engine diesel oil from becoming black improves structure injection pump, includes:
the engine oil lubricating cavity on the adjacent electric control unit pump installation cavities is communicated through a first oil channel hole arranged on the wall between the adjacent electric control unit pump installation cavities, and the engine oil lubricating cavity on the adjacent electric control unit pump installation cavity is communicated through a second oil channel hole arranged on the wall between the adjacent electric control unit pump installation cavities; a bearing cover part is arranged at one end of the engine oil flowing cavity, and a plurality of engine oil return holes are formed in the bearing cover part;
the diesel oil is communicated with a diesel oil cavity in an electric control unit pump installation cavity adjacent to a main oil inlet through the oil inlet joint and the main oil inlet arranged on the high-pressure oil pump body;
a plurality of electric control unit pumps which are arranged in parallel in the corresponding electric control unit installation cavities; a low-pressure cavity is arranged on the outer peripheral surface of the pump body of each electric control unit pump, and the low-pressure cavity on the outer peripheral surface of the pump body of each electric control unit pump is communicated with the corresponding diesel cavity; the low-pressure cavity in each electric control unit pump is communicated with the high-pressure oil cavity in the electric control unit pump body through an oil inlet channel in the electric control unit pump body; a rolling wheel body assembly in each electric control unit pump body extends into a corresponding engine oil lubricating cavity and is driven by a cam shaft arranged in the engine oil flowing cavity; it is characterized in that the preparation method is characterized in that,
the high-pressure oil pump body is only provided with an engine oil inlet hole with a small aperture communicated with an engine oil lubricating cavity in an electric control monoblock pump mounting cavity, an engine oil throttling and feeding screw is mounted in the engine oil inlet hole, and the engine oil throttling and feeding screw is communicated with the engine oil return hole through an engine oil pipe.
In the utility model discloses a preferred embodiment be provided with the engine oil throttle hole in the engine oil throttle oil feed screw to the oil inlet quantity of control engine oil.
In a preferred embodiment of the present invention, a plurality of oil flow grooves are provided in the oil flow chamber.
In the utility model discloses a preferred embodiment the high-pressure oil pump body is close to this end of bearing cover part is provided with the machine oil drain hole, each machine oil drain hole with two machine oil return holes on the bearing cover part communicate, the machine oil return hole is for increasing machine oil return hole.
In a preferred embodiment of the present invention, a plunger lubricant oil storage chamber is provided on a wall of the plunger chamber in each of the electrically controlled unit pumps and an oil return hole is provided in each of the electrically controlled unit pump bodies, and the plunger lubricant oil storage chamber communicates with the low pressure chamber through the oil return hole.
In a preferred embodiment of the present invention, a sealing ring is disposed on the outer circumference of each of the electrically controlled unit pump bodies, so as to seal and isolate the diesel oil chamber and the engine oil lubrication chamber in each of the electrically controlled unit pump installation chambers.
Owing to adopted above technical scheme, the utility model discloses compare with current injection pump, have following advantage:
1. only adopt the machine oil inlet hole of a aperture and a machine oil throttle oil feed screw to spout machine oil to the lubricated chamber of machine oil of an automatically controlled monoblock pump installation intracavity, reduced the oil mass that machine oil got into the high-pressure oil pump body, effectively reduced the internal machine oil pressure of high-pressure oil pump, prevent that machine oil from going up cluster to the diesel oil intracavity.
2. The plurality of engine oil flowing grooves are formed in the engine oil flowing cavity, so that the flowability of the engine oil among the engine oil lubricating cavities is increased, and the engine oil can be timely delivered into the engine oil lubricating cavities.
3. Through set up on the bearing cap spare and increase the machine oil gallery and be provided with the machine oil draining hole at this one end of the adjacent bearing cap spare of high-pressure oil pump body, improved the speed of flow back of machine oil, reduced the lubricated chamber machine oil liquid level height of machine oil in every automatically controlled monoblock pump installation cavity, further prevent that machine oil from going up cluster to the diesel oil intracavity.
4. The plunger lubricating oil storage chamber on the plunger is cancelled, and the plunger lubricating oil storage chamber is arranged on the chamber wall of the plunger chamber, so that the plunger in the electric control monoblock pump is prevented from moving upwards, and the engine oil in the engine oil lubricating chamber is connected to the diesel oil chamber in series, and meanwhile, the plunger can be effectively lubricated to prevent the diesel oil from blackening.
5. A sealing ring is arranged on the outer circumference of the pump body of each electric control unit pump, a diesel oil cavity in the installation cavity of each electric control unit pump is sealed and isolated from an engine oil lubricating cavity, and engine oil in the engine oil lubricating cavity can be effectively isolated from being mixed with diesel oil in the diesel oil cavity, so that the diesel oil is prevented from being blackened.
The utility model discloses can effectively control machine oil and cluster into diesel oil chamber problem from automatically controlled monoblock combination pump machine oil lubrication chamber, prevent that diesel oil from becoming black.
Drawings
Fig. 1 is the utility model discloses prevent that diesel engine diesel oil from becoming black and improving the front view of structure injection pump.
Fig. 2 is the utility model discloses prevent that diesel engine diesel oil from becoming black and improving the central section schematic diagram of structure injection pump.
Fig. 3 is a right side view of fig. 1.
Fig. 4 is the utility model discloses prevent that diesel engine diesel oil from becoming the section sketch map of the oil inlet face of engine oil in the improved structure injection pump of black.
Fig. 5 is an enlarged schematic view at I of fig. 2.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1 to 5, the fuel injection pump with an improved structure for preventing diesel from being blackened for the diesel engine comprises a fuel injection pump with an improved structure for preventing diesel from being blackened for the diesel engine, which comprises a high-pressure oil pump body 100, wherein an engine oil flowing cavity 130 is arranged at the bottom in the high-pressure oil pump body 100, a plurality of electric control monoblock pump installation cavities are arranged in parallel at the upper middle part in the high-pressure oil pump body 100, a diesel oil cavity 110 is arranged at the upper part of each electric control monoblock pump installation cavity, and an engine oil lubricating cavity 120 is arranged at the lower part of each electric. The bottom of each oil lubrication chamber 120 communicates with the oil flow chamber 130.
The diesel cavities 110 in the adjacent electric control unit pump installation cavities are communicated through the oil passage holes a arranged on the cavity walls between the adjacent electric control unit pump installation cavities, so that the diesel pressure between cylinders is kept constant, the fuel injection dispersion difference is reduced, and the uniform power of the diesel engine is ensured.
The engine oil lubricating cavities 120 on the adjacent electric control monoblock pump installation cavities are communicated through the oil passage holes b arranged on the cavity walls between the adjacent electric control monoblock pump installation cavities so as to keep the flowing lubrication of the engine oil between cylinders constant and prolong the service life of the monoblock combined pump.
A bearing cover member 400 is provided at one end of the oil flow chamber 130, and four enlarged oil return holes h are provided in the bearing cover member 400.
In the oil inlet joint 140 of the high-pressure oil pump body 100, diesel oil is communicated with the diesel oil chamber 110 in the electric control unit pump installation chamber adjacent to the main oil inlet 150 through the oil inlet joint 140 and the main oil inlet 150 arranged on the high-pressure oil pump body 100.
A plurality of electric control unit pumps 200 are arranged in parallel in the electric control unit installation cavities through the double-headed studs 210 and the fastening nuts 220. An electromagnet component 230 and a control valve component 240 are arranged in the electric control unit pump 200; the electromagnet part 230 closes to establish high-pressure fuel oil through the ECU control unit electrification attraction control valve part 240, the electromagnet part 230 opens the control valve part 240 through the ECU control unit outage, and the high-pressure fuel oil is discharged back to the low-pressure oil way.
A low pressure cavity 281 is arranged on the peripheral surface of the pump body 280 of each electronic unit pump 200, and the low pressure cavity 281 on the peripheral surface of the pump body 280 of each electronic unit pump 200 is communicated with the corresponding diesel oil cavity 110; the low-pressure cavity 281 in each electric control unit pump 200 is communicated with a high-pressure oil cavity k arranged in the pump body 280 of the electric control unit pump 200 through an oil inlet channel j arranged in the pump body 210 of the electric control unit pump 200; the rolling wheel assemblies 290 in the pump body 280 of each electronically controlled unit pump 200 extend into the corresponding oil lubrication chamber 120 and are driven by the camshaft disposed in the oil flow chamber 130.
The utility model discloses a characteristics lie in, only set up the machine oil inlet hole d in the small aperture that the lubricated chamber of machine oil 120 intercommunication in one and an automatically controlled monoblock pump installation cavity on the high-pressure oil pump body 100, install a machine oil throttle oil feed screw 300 in this machine oil inlet hole d, machine oil throttle oil feed screw 300 is through machine oil pipe and machine oil return opening h intercommunication. An oil throttle hole 310 is provided in the oil throttle inlet screw 300 to control the oil inlet amount of the oil.
In order to increase the fluidity of the engine oil between the engine oil lubrication chambers 120 and ensure that the engine oil can be timely delivered to the engine oil lubrication chambers 120, a plurality of engine oil flow grooves e are formed in the engine oil flow chamber 130.
In order to improve the oil return speed, the oil level height of the oil lubrication cavity 120 in each electronic control unit pump installation cavity is reduced, and further the oil is prevented from flowing upwards to the diesel oil cavity 110, an oil drain hole f is formed in one end, close to the bearing cover part 400, of the high-pressure oil pump body 100, and each oil drain hole f is communicated with two oil return holes h in the bearing cover part, so that the excessive oil in the oil lubrication cavity 120 of the oil injection pump is effectively prevented, and the oil is prevented from flowing upwards to the diesel oil cavity 110.
In order to prevent that plunger 260 in the automatically controlled monoblock pump 200 from going upward the in-process, in the diesel oil chamber 110 of going to in the lubricated chamber 120 of machine oil on, simultaneously can also effectually play lubricated plunger 260's effect, thereby prevent that diesel oil from becoming black, the utility model discloses cancelled the lubricated oil storage chamber on plunger 260, be provided with a plunger lubricating oil storage chamber g on the chamber wall of the plunger chamber 270 in each automatically controlled monoblock pump 200 and be provided with an oil return hole c in each automatically controlled monoblock pump 200 pump body 280, plunger lubricating oil storage chamber g passes through oil return hole c and low pressure chamber 281 intercommunication, makes plunger 260 and plunger chamber 270 be accurate cooperation, thereby effectual prevention plunger 260 goes upward in-process in cam and gyro wheel (not given in the figure) drive and gets into diesel oil chamber 110 through oil return hole c with machine oil.
The utility model discloses every jar monoblock pump all has machine oil and diesel oil to keep apart sealing washer i, can effectively keep apart the machine oil in the lubricated chamber of machine oil 120 and the diesel oil in diesel oil chamber 110. The plunger is a straight-rod plunger, the plunger cavity 270 is provided with a plunger lubricating oil storage cavity g and an oil return hole c, the plunger can effectively lubricate the plunger in the process of preventing engine oil from entering the diesel cavity 110 through the oil return hole c, and the engine oil is prevented from being connected with the diesel cavity of the single combined pump in a serial mode.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the structural principle of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a prevent that diesel engine diesel oil from becoming black improves structure injection pump, includes:
the engine oil lubricating device comprises a high-pressure oil pump body, wherein an engine oil flowing cavity is arranged at the bottom in the high-pressure oil pump body, a plurality of electric control unit pump installation cavities are arranged in parallel at the middle upper part in the high-pressure oil pump body, a diesel oil cavity is arranged at the upper part of each electric control unit pump installation cavity, an engine oil lubricating cavity is arranged at the lower part of each electric control unit pump installation cavity, the bottom of each engine oil lubricating cavity is communicated with the engine oil flowing cavity, the diesel oil cavities on the adjacent electric control unit pump installation cavities are communicated through first oil channel holes formed in the wall between the adjacent electric control unit pump installation cavities, and the engine oil lubricating cavities on the adjacent electric control unit pump installation cavities are communicated through second oil channel holes formed in; a bearing cover part is arranged at one end of the engine oil flowing cavity, and a plurality of engine oil return holes are formed in the bearing cover part;
the diesel oil is communicated with a diesel oil cavity in an electric control unit pump installation cavity adjacent to a main oil inlet through the oil inlet joint and the main oil inlet arranged on the high-pressure oil pump body;
a plurality of electric control unit pumps which are arranged in parallel in the corresponding electric control unit installation cavities; a low-pressure cavity is arranged on the outer peripheral surface of the pump body of each electric control unit pump, and the low-pressure cavity on the outer peripheral surface of the pump body of each electric control unit pump is communicated with the corresponding diesel cavity; the low-pressure cavity in each electric control unit pump is communicated with the high-pressure oil cavity in the electric control unit pump body through an oil inlet channel in the electric control unit pump body; a rolling wheel body assembly in each electric control unit pump body extends into a corresponding engine oil lubricating cavity and is driven by a cam shaft arranged in the engine oil flowing cavity; it is characterized in that the preparation method is characterized in that,
the high-pressure oil pump body is only provided with an engine oil inlet hole with a small aperture communicated with an engine oil lubricating cavity in an electric control monoblock pump mounting cavity, an engine oil throttling and feeding screw is mounted in the engine oil inlet hole, and the engine oil throttling and feeding screw is communicated with the engine oil return hole through an engine oil pipe.
2. The improved structure injection pump for preventing diesel from blackening of the diesel engine as claimed in claim 1, wherein an oil throttle hole is provided in said oil throttle inlet screw.
3. The improved structure fuel injection pump for preventing diesel fuel of diesel engine from blackening according to claim 2, wherein a plurality of oil flow grooves are provided in said oil flow chamber.
4. An improved fuel injection pump for preventing diesel fuel in a diesel engine from blackening according to claim 3, wherein oil drain holes are provided in the high-pressure pump body at an end adjacent to the bearing cover member, each oil drain hole communicating with two oil return holes in the bearing cover member, the oil return holes being enlarged oil return holes.
5. The improved structure injection pump for preventing diesel oil of diesel engine from blackening as claimed in claim 4, wherein a plunger lubricant oil reservoir is provided in the wall of the plunger chamber in each of the electrically controlled unit pumps and an oil return hole is provided in the pump body of each of the electrically controlled unit pumps, said plunger lubricant oil reservoir communicating with the low pressure chamber through the oil return hole.
6. The improved structure fuel injection pump for preventing diesel engine from blackening as claimed in claim 5, wherein a seal ring is provided on the outer circumference of the pump body of each electrically controlled unit pump to seal the diesel oil chamber from the engine oil lubrication chamber in the mounting chamber of each electrically controlled unit pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822203273.2U CN210087520U (en) | 2018-12-26 | 2018-12-26 | Improved structure fuel injection pump for preventing diesel oil of diesel engine from blackening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822203273.2U CN210087520U (en) | 2018-12-26 | 2018-12-26 | Improved structure fuel injection pump for preventing diesel oil of diesel engine from blackening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210087520U true CN210087520U (en) | 2020-02-18 |
Family
ID=69469875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822203273.2U Withdrawn - After Issue CN210087520U (en) | 2018-12-26 | 2018-12-26 | Improved structure fuel injection pump for preventing diesel oil of diesel engine from blackening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210087520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838326A (en) * | 2018-12-26 | 2019-06-04 | 南岳电控（衡阳）工业技术股份有限公司 | One kind prevents diesel oil of diesel engine blackening from improving structure injection pump |
-
2018
- 2018-12-26 CN CN201822203273.2U patent/CN210087520U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838326A (en) * | 2018-12-26 | 2019-06-04 | 南岳电控（衡阳）工业技术股份有限公司 | One kind prevents diesel oil of diesel engine blackening from improving structure injection pump |
| CN109838326B (en) * | 2018-12-26 | 2024-05-28 | 南岳电控（衡阳）工业技术股份有限公司 | Improved fuel injection pump for preventing diesel oil of diesel engine from blackening |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200218 Effective date of abandoning: 20240528 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200218 Effective date of abandoning: 20240528 |