CN109838326A - One kind prevents diesel oil of diesel engine blackening from improving structure injection pump - Google Patents
One kind prevents diesel oil of diesel engine blackening from improving structure injection pump Download PDFInfo
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- CN109838326A CN109838326A CN201811605096.9A CN201811605096A CN109838326A CN 109838326 A CN109838326 A CN 109838326A CN 201811605096 A CN201811605096 A CN 201811605096A CN 109838326 A CN109838326 A CN 109838326A
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- 239000002283 diesel fuel Substances 0.000 title claims abstract description 64
- 238000002347 injection Methods 0.000 title claims abstract description 23
- 239000007924 injection Substances 0.000 title claims abstract description 23
- 239000003921 oil Substances 0.000 claims abstract description 131
- 239000010721 machine oil Substances 0.000 claims abstract description 86
- 230000001050 lubricating effect Effects 0.000 claims abstract description 33
- 239000010705 motor oil Substances 0.000 claims abstract description 25
- 239000006071 cream Substances 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 31
- 239000000446 fuel Substances 0.000 claims description 16
- 239000010687 lubricating oil Substances 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 208000002925 dental caries Diseases 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 2
- 238000005461 lubrication Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
One kind disclosed by the invention prevents diesel oil of diesel engine blackening from improving structure injection pump, includes: the high-pressure oil pump pump housing connecting with engine；Several sets are mounted on the electronically controlled unit pump in the high-pressure oil pump pump housing side by side, and electromagnetic valve components, control valve member are equipped in the electronically controlled unit pump；It limits machine oil oil inlet quantity by using single hole machine oil throttling oil inlet spiral shell and the single hole machine oil oil inlet pump housing, engine oil flow slot is equipped in the pump housing to increase current lubrication of the machine oil between each cylinder of injection pump, the bearing cover of machine oil oil leak hole and increasing oil return hole in the pump housing accelerates several machine oil in injection pump to flow out in diesel engine, to effectively reduce injection pump machine oil liquid level, string combination unit pump diesel oil chamber on machine oil is prevented；Plunger cavity has plunger lubrication shoe cream room and oil return hole, it can also effectively play the role of lubricating plunger during preventing machine oil entering to diesel oil chamber by oil return hole, to prevent machine oil from entering in diesel oil chamber, diesel vehicle can effectively be avoided diesel oil blackening failure occur.
Description
Technical field
The present invention relates to a kind of high-pressure oil pump technical field of diesel engine, in particular to a kind of fuel oil that is applied to sprays
Prevent diesel oil of diesel engine blackening from improving structure injection pump in system.
Background technique
Existing electronic combination unit pump belongs to forced feed lubrication mode and lubricates, and engine oil pressure is determined by engine oil pump,
After engine oil pressure is generally relatively high, and it is excessive to enter to machine oil in injection pump, and machine oil usually runs 50 hours in diesel engine
It can blackening gradually.If electronic combination unit pump, which is not carried out, reduces machine oil oil inlet quantity, limitation machine oil seals in the control of diesel oil, will
Cause machine oil machine oil chamber from electronic combination unit pump to seal in diesel oil chamber, causes diesel oil blackening failure in market commonplace.
Summary of the invention
The technical problems to be solved by the invention are directed to the machine oil in existing diesel from the machine oil chamber in combination unit pump
It seals in diesel oil chamber and leads to diesel oil blackening problem and a kind of injection pump for preventing diesel oil vehicle fuel blackening is provided.
The technical problems to be solved by the invention can be achieved through the following technical solutions:
One kind preventing diesel oil of diesel engine blackening modified injection pump, includes:
The one high-pressure oil pump pump housing pumps intracorporal bottom in the high-pressure oil pump and is provided with engine oil flow chamber, in the high pressure
Middle and upper part in pump body is arranged in parallel with several electronically controlled unit pump installation cavitys, and the top of each electronically controlled unit pump installation cavity is set
It is equipped with diesel oil chamber, lower part is equipped with oil lubricating chamber, and the connection of engine oil flow chamber described in the bottom of the oil lubricating chamber is adjacent automatically controlled
Diesel oil chamber on monoblock pump installation cavity passes through the first oil hole being arranged between adjacent electronically controlled unit pump installation cavity in cavity wall and connects
Logical, the oil lubricating chamber on adjacent electronically controlled unit pump installation cavity is by being arranged between adjacent electronically controlled unit pump installation cavity in cavity wall
The second oil hole connection；One end of the engine oil flow chamber is provided with bearing cover, is set on the bearing cover
It is equipped with several machine oil oil return holes；
Fuel inlet fitting on the high-pressure oil pump pump housing is set, and diesel oil is pumped by fuel inlet fitting and setting high-pressure oil pump
Total oil inlet on body is connected to the diesel oil chamber in the electronically controlled unit pump installation cavity of adjacent total oil inlet；
Several electronically controlled unit pumps being installed in parallel in corresponding automatically controlled monomer installation cavity；In the pump housing of each electronically controlled unit pump
A low pressure chamber is provided on outer peripheral surface, the low pressure chamber on each electronic unit pump body outer peripheral surface is connected to corresponding diesel oil chamber；
Low pressure chamber in each electronically controlled unit pump passes through the oil input channel being arranged in the electronic unit pump body and is arranged described automatically controlled
High-voltage oil cavity connection in unit pump body；Rolling wheel assembly in each electronic unit pump body extends into corresponding machine oil
In lubricating cavity and by the way that the intracavitary camshaft actuated of the engine oil flow is arranged in；It is characterized in that,
One and the oil lubricating chamber in an electronically controlled unit pump installation cavity are only offered on the high-pressure oil pump pump housing
The machine oil fuel feed hole of the small-bore of connection is equipped with machine oil throttling oil inlet screw, the machine oil section in the machine oil fuel feed hole
Whelk nail is flowed into be connected to by machine oil oil pipe with the machine oil oil return hole.
In a preferred embodiment of the invention, organic oil throttle orifice is set in machine oil throttling oil inlet screw,
To control the oil inlet quantity of machine oil.
In a preferred embodiment of the invention, several engine oil flow slots are provided with the engine oil flow is intracavitary.
In a preferred embodiment of the invention, in the high-pressure oil pump pump housing adjacent to described this end of bearing cover
It is provided with machine oil oil leak hole, each machine oil oil leak hole is connected to two machine oil oil return holes on the bearing cover, the machine
Oily oil return hole is to increase machine oil oil return hole.
In a preferred embodiment of the invention, one is provided in the cavity wall of the plunger cavity in each electronically controlled unit pump
Plunger lubricating oil shoe cream room is simultaneously provided with an oil return hole in each electronic unit pump body, the plunger lubricating oil shoe cream room
It is connected to by oil return hole with low pressure chamber.
In a preferred embodiment of the invention, a sealing ring is set on each electronic unit pump body excircle,
By the diesel oil chamber and oil lubricating chamber seal isolation in each electronically controlled unit pump installation cavity.
Due to using technical solution as above, the present invention has the advantages that compared with existing injection pump
1. the machine oil fuel feed hole and a machine oil only with small-bore throttle, oil inlet screw is to an electronically controlled unit pump
Oil lubricating chamber in installation cavity sprays into machine oil, reduces machine oil and enters the intracorporal oil mass of high-pressure oil pump pump, effectively reduces height
Pressure oil pump pumps intracorporal engine oil pressure, prevents from going here and there on machine oil intracavitary to diesel oil.
2. being provided with several engine oil flow slots engine oil flow is intracavitary, machine oil is increased between each oil lubricating chamber
It is intracavitary to guarantee that machine oil can be sent in time each oil lubricating for mobility.
3. increasing machine oil oil return hole and in the high-pressure oil pump pump housing adjacent to bearing cover by being arranged on bearing cover
This one end is provided with machine oil oil leak hole, improves the back-flow velocity of machine oil, reduces the machine in each electronically controlled unit pump installation cavity
Oil lubrication chamber machine oil liquid level further prevents going here and there on machine oil intracavitary to diesel oil.
4. eliminating the plunger lubricating oil shoe cream room on plunger, plunger lubricating oil shoe cream room is arranged in the cavity wall of plunger cavity
On, it is intracavitary to diesel oil by being gone here and there on the intracavitary machine oil of oil lubricating during preventing the plunger uplink in electronically controlled unit pump, simultaneously also
It can effectively play the role of lubricating plunger, to prevent diesel oil blackening.
5. a sealing ring is set on each electronic unit pump body excircle, it will be in each electronically controlled unit pump installation cavity
Diesel oil chamber and oil lubricating chamber seal off, and the machine oil and the intracavitary diesel oil of diesel oil that can be effectively isolated in oil lubricating chamber are mixed
It closes, to prevent diesel oil blackening.
The present invention can effectively control machine oil oil lubricating chamber from electronic combination unit pump and seal in diesel oil chamber problem, prevent
Diesel oil blackening.
Detailed description of the invention
Fig. 1 is the main view that the present invention prevents diesel oil of diesel engine blackening modified injection pump.
Fig. 2 is the centre section schematic diagram that the present invention prevents diesel oil of diesel engine blackening improved structure injection pump.
Fig. 3 is the right view of Fig. 1.
Fig. 4 is the diagrammatic cross-section that the present invention prevents machine oil oil inlet face in diesel oil of diesel engine blackening modified injection pump.
Fig. 5 is enlarged diagram at the I of Fig. 2.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to Fig. 1 to Fig. 5, the one kind provided in figure prevents diesel oil of diesel engine blackening modified injection pump, including a kind of anti-
Only diesel oil of diesel engine blackening modified injection pump, including a high-pressure oil pump pump housing 100, the bottom in the high-pressure oil pump pump housing 100
It is provided with engine oil flow chamber 130, the middle and upper part in the high-pressure oil pump pump housing 100 is arranged in parallel with several electronically controlled unit pump installations
Chamber, the top of each electronically controlled unit pump installation cavity are provided with diesel oil chamber 110, and lower part is equipped with oil lubricating chamber 120.Each machine oil
The bottom engine oil flow chamber 130 of lubricating cavity 120 is connected to.
Diesel oil chamber 110 in adjacent electronically controlled unit pump installation cavity is by being arranged between adjacent electronically controlled unit pump installation cavity chamber
Oil hole a connection on wall reduces fuel oil and sprays scattered error, guarantee that diesel oil is motor-driven to keep the flat perseverance of the diesel pressure between each cylinder
Power is uniform.
Oil lubricating chamber 120 on adjacent electronically controlled unit pump installation cavity by setting adjacent electronically controlled unit pump installation cavity it
Between oil hole b connection in cavity wall increase combination unit pump to keep the engine oil flow between each cylinder to lubricate flat perseverance and use the longevity
Life.
One end of engine oil flow chamber 130 is provided with bearing cover 400, on bearing cover 400 there are four settings
The machine oil oil return hole h of increasing.
Fuel inlet fitting 140 on the high-pressure oil pump pump housing 100, diesel oil is by fuel inlet fitting 140 and is arranged in high pressure oil
The diesel oil chamber 110 pumped in the electronically controlled unit pump installation cavity of total oil inlet 150 on the pump housing 100 and adjacent total oil inlet 150 connects
It is logical.
The automatically controlled monomer peace that several electronically controlled unit pumps 200 are mounted on pair side by side by studs 210, fastening nut 220
In behaveing affectedly.Electromagnet component 230 and control valve member 240 are installed in electronically controlled unit pump 200；Electromagnet component 230 passes through
The energization of ECU control unit is attracted the control closing of valve member 240 and establishes high pressure fuel, and electromagnet component 230 passes through ECU control unit
Control valve member 240 is opened in power-off, and high pressure fuel is let out back in low pressure oil way.
A low pressure chamber 281, each electronically controlled unit pump are provided on 280 outer peripheral surface of the pump housing of each electronically controlled unit pump 200
Low pressure chamber 281 on 200 pump housing, 280 outer peripheral surface is connected to corresponding diesel oil chamber 110；Low pressure in each electronically controlled unit pump 200
Chamber 281 is by being arranged in the oil input channel j in 200 pump housing 210 of electronically controlled unit pump and being arranged in 200 pump housing 280 of electronically controlled unit pump
High-voltage oil cavity k connection；Rolling wheel assembly 290 in each 200 pump housing 280 of electronically controlled unit pump extends into corresponding machine oil
In lubricating cavity 120 and pass through the camshaft actuated being arranged in engine oil flow chamber 130.
It is installed it is a feature of the present invention that only offering one on the high-pressure oil pump pump housing 100 with an electronically controlled unit pump
The machine oil fuel feed hole d for the small-bore that intracavitary oil lubricating chamber 120 is connected to, is equipped with a machine oil section in machine oil fuel feed hole d
Whelk nail 300 is flowed into, machine oil throttling oil inlet screw 300 is connected to by machine oil oil pipe with machine oil oil return hole h.In machine oil throttling oil inlet
Organic oil throttle orifice 310 is set in screw 300, to control the oil inlet quantity of machine oil.
In order to increase mobility of the machine oil between each oil lubricating chamber 120, guarantee that machine oil can be sent to each machine in time
In oil lubrication chamber 120, several engine oil flow slot e are provided in engine oil flow chamber 130.
In order to improve the back-flow velocity of machine oil, 120 machine of oil lubricating chamber in each electronically controlled unit pump installation cavity is reduced
Oil level height further prevents on machine oil in string to diesel oil chamber 110, in the high-pressure oil pump pump housing 100 adjacent to bearing cover
400 this one end are provided with machine oil oil leak hole f, two machine oil oil return hole h on each machine oil oil leak hole f and the bearing cover
Connection prevents string on machine oil from arriving diesel oil chamber 110 so that the machine oil effectively prevented in injection pump oil lubricating chamber 120 is excessive
It is interior.
It, will be on the machine oil in oil lubricating chamber 120 in order to prevent during 260 uplink of plunger in electronically controlled unit pump 200
In string to diesel oil chamber 110, while it can also effectively play the role of lubricating plunger 260, to prevent diesel oil blackening, the present invention is taken
Disappeared the lubrication shoe cream room on plunger 260, is provided with one in the cavity wall of the plunger cavity 270 in each electronically controlled unit pump 200
Plunger lubricating oil shoe cream room g is simultaneously provided with an oil return hole c, plunger lubricating oil in each 200 pump housing 280 of electronically controlled unit pump
Shoe cream room g is connected to by oil return hole c with low pressure chamber 281, so that plunger 260 and plunger cavity 270 are precision-fit, thus effectively
Prevent plunger 260 that machine oil is entered to diesel oil by oil return hole c during cam and idler wheel (not providing in figure) driving uplink
In chamber 110.
The every equal organic oil of cylinder monoblock pump of the present invention and diesel oil isolating seal circle i, can be effectively isolated oil lubricating chamber 120
In machine oil and diesel oil chamber 110 diesel oil.Plunger is straight-bar plunger, and plunger cavity 270 is equipped with plunger lubrication shoe cream room g and oil return
Hole c can also effectively play the role of lubricating plunger during preventing machine oil entering to diesel oil chamber 110 by oil return hole c,
Prevent string combination unit pump diesel oil chamber on machine oil.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The structural principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, this
A little changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention has appended claims
And its equivalent defines.
Claims (6)
1. one kind prevents diesel oil of diesel engine blackening modified injection pump, include:
The one high-pressure oil pump pump housing pumps intracorporal bottom in the high-pressure oil pump and is provided with engine oil flow chamber, in the high-pressure oil pump
It pumps intracorporal middle and upper part and is arranged in parallel with several electronically controlled unit pump installation cavitys, the top of each electronically controlled unit pump installation cavity is provided with
Diesel oil chamber, lower part are equipped with oil lubricating chamber, the connection of engine oil flow chamber described in the bottom of the oil lubricating chamber, adjacent automatically controlled monomer
Diesel oil chamber on pump installation cavity passes through the first oil hole connection being arranged between adjacent electronically controlled unit pump installation cavity in cavity wall, phase
Oil lubricating chamber on adjacent electronically controlled unit pump installation cavity passes through the be arranged between adjacent electronically controlled unit pump installation cavity in cavity wall
The connection of two oil holes；One end of the engine oil flow chamber is provided with bearing cover, is provided on the bearing cover
Several machine oil oil return holes；
Fuel inlet fitting on the high-pressure oil pump pump housing is set, and diesel oil passes through on fuel inlet fitting and the setting high-pressure oil pump pump housing
Total oil inlet be connected to the diesel oil chamber in the electronically controlled unit pump installation cavity of adjacent total oil inlet；
Several electronically controlled unit pumps being installed in parallel in corresponding automatically controlled monomer installation cavity；In the pump housing periphery of each electronically controlled unit pump
A low pressure chamber is provided on face, the low pressure chamber on each electronic unit pump body outer peripheral surface is connected to corresponding diesel oil chamber；It is each
Low pressure chamber in electronically controlled unit pump passes through the oil input channel being arranged in the electronic unit pump body and is arranged in the automatically controlled monomer
Pump pumps intracorporal high-voltage oil cavity connection；Rolling wheel assembly in each electronic unit pump body extends into corresponding oil lubricating
It is intracavitary and by the way that the intracavitary camshaft actuated of the engine oil flow is arranged in；It is characterized in that,
One is only offered on the high-pressure oil pump pump housing to be connected to the oil lubricating chamber in an electronically controlled unit pump installation cavity
Small-bore machine oil fuel feed hole, be equipped in the machine oil fuel feed hole machine oil throttling oil inlet screw, the machine oil throttle into
Whelk nail is connected to by machine oil oil pipe with the machine oil oil return hole.
2. one kind as described in claim 1 prevents diesel oil of diesel engine blackening modified injection pump, which is characterized in that in the machine
Organic oil throttle orifice is set in oil throttling oil inlet screw.
3. one kind as claimed in claim 2 prevents diesel oil of diesel engine blackening modified injection pump, which is characterized in that in the machine
Oil stream, which is moved, intracavitary is provided with several engine oil flow slots.
4. one kind as claimed in claim 3 prevents diesel oil of diesel engine blackening modified injection pump, which is characterized in that in the height
The pressure oil pump pump housing is provided with machine oil oil leak hole, each machine oil oil leak hole and the bearing cap adjacent to described this end of bearing cover
Two machine oil oil return holes connection on component, the machine oil oil return hole are to increase machine oil oil return hole.
5. one kind as claimed in claim 4 prevents diesel oil of diesel engine blackening modified injection pump, which is characterized in that in each electricity
A plunger lubricating oil shoe cream room is provided in the cavity wall of plunger cavity in control monoblock pump and is set in each electronic unit pump body
It is equipped with an oil return hole, the plunger lubricating oil shoe cream room is connected to by oil return hole with low pressure chamber.
6. one kind as claimed in claim 5 prevents diesel oil of diesel engine blackening modified injection pump, which is characterized in that in each electricity
A sealing ring is set on control unit pump body excircle, by the diesel oil chamber and oil lubricating chamber in each electronically controlled unit pump installation cavity
Seal isolation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811605096.9A CN109838326B (en) | 2018-12-26 | 2018-12-26 | Improved fuel injection pump for preventing diesel oil of diesel engine from blackening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811605096.9A CN109838326B (en) | 2018-12-26 | 2018-12-26 | Improved fuel injection pump for preventing diesel oil of diesel engine from blackening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109838326A true CN109838326A (en) | 2019-06-04 |
| CN109838326B CN109838326B (en) | 2024-05-28 |
Family
ID=66883304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811605096.9A Active CN109838326B (en) | 2018-12-26 | 2018-12-26 | Improved fuel injection pump for preventing diesel oil of diesel engine from blackening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109838326B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761841A (en) * | 2020-12-23 | 2021-05-07 | 南岳电控（衡阳）工业技术股份有限公司 | Fuel injection pump for preventing difficult starting of diesel engine |
| CN114483401A (en) * | 2022-01-30 | 2022-05-13 | 南岳电控（衡阳）工业技术股份有限公司 | Oil duct structure for preventing fuel oil and engine oil from channeling each other for combined fuel injection pump |
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| CN108425776A (en) * | 2017-12-29 | 2018-08-21 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of co-rail fuel feed pump of oil inlet control |
| CN210087520U (en) * | 2018-12-26 | 2020-02-18 | 南岳电控（衡阳）工业技术股份有限公司 | Improved structure fuel injection pump for preventing diesel oil of diesel engine from blackening |
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2018
- 2018-12-26 CN CN201811605096.9A patent/CN109838326B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202001162U (en) * | 2010-12-07 | 2011-10-05 | 中国第一汽车集团公司无锡油泵油嘴研究所 | Oil-taking metering valve controlled common-rail oil feed pump |
| CN202510265U (en) * | 2012-03-29 | 2012-10-31 | 江西直方数控动力有限公司 | Direct synthesis injection pump of mine electrical unit |
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| CN210087520U (en) * | 2018-12-26 | 2020-02-18 | 南岳电控（衡阳）工业技术股份有限公司 | Improved structure fuel injection pump for preventing diesel oil of diesel engine from blackening |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761841A (en) * | 2020-12-23 | 2021-05-07 | 南岳电控（衡阳）工业技术股份有限公司 | Fuel injection pump for preventing difficult starting of diesel engine |
| CN114483401A (en) * | 2022-01-30 | 2022-05-13 | 南岳电控（衡阳）工业技术股份有限公司 | Oil duct structure for preventing fuel oil and engine oil from channeling each other for combined fuel injection pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109838326B (en) | 2024-05-28 |
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