CN106762273A - A kind of high pressure fuel pump of oil lubricating - Google Patents
A kind of high pressure fuel pump of oil lubricating Download PDFInfo
- Publication number
- CN106762273A CN106762273A CN201710169951.5A CN201710169951A CN106762273A CN 106762273 A CN106762273 A CN 106762273A CN 201710169951 A CN201710169951 A CN 201710169951A CN 106762273 A CN106762273 A CN 106762273A
- Authority
- CN
- China
- Prior art keywords
- oil
- plunger
- pump housing
- high pressure
- tappet body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 93
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 50
- 239000003921 oil Substances 0.000 claims abstract description 133
- 239000010721 machine oil Substances 0.000 claims abstract description 85
- 239000000295 fuel oil Substances 0.000 claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 11
- 238000004891 communication Methods 0.000 abstract description 3
- 239000010705 motor oil Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 208000002925 dental caries Diseases 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/12—Non-pressurised lubrication, or non-closed-circuit lubrication, not otherwise provided for
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a kind of high pressure fuel pump of oil lubricating, including the pump housing, camshaft, actuator, one or more plunger pairs, and the tappet body corresponding with plunger pair, the high pressure fuel pump includes oil lubricating mechanism, the oil lubricating mechanism includes the machine oil oil inlet pipe and machine oil flowline that are opened on the pump housing, and it is opened in the pump housing groove on the pump housing with tappet body wall contacts, machine oil oil inlet pipe is divided into two-way in the pump housing, first branch is connected with the pump housing machine oil chamber in the pump housing, second branch is connected with pump housing groove, the oil hole for connecting tappet body cavity is offered on the lateral wall of tappet body, with moving up and down for tappet body, oil hole and pump housing groove intermittent communication, tappet body cavity is connected with pump housing machine oil chamber by drain path, machine oil flowline is connected with pump housing machine oil chamber.Also include plunger seal mechanism.The present invention had both improved oil lubricating performance by setting oil lubricating mechanism and plunger seal mechanism, and the blending of machine oil fuel oil is greatly limit again.
Description
Technical field
The present invention relates to internal combustion engine technologies field, more particularly to a kind of high pressure fuel pump of oil lubricating.
Background technology
Requirement with energy consumption and Abgasgesetz is more and more strict, and compression ignition engine fuel injection system faces higher wanting
Ask.High pressure fuel pump faces challenge higher as pressure feed source in fuel injection system.It is mainly reflected in：Height supply
Pressure (design object pressure up to 2000bar and more than), (fuel feeding efficiency high, energy consumption is low, and compact conformation, space account for for compact efficient
With small), rotating speed high (high pressure fuel pump can work under higher rotation speed, under stringent case rated speed up to 5000rpm and with
On), (product hermeticity is good, wear out failure point danger low, lubricity, dust-laden for fuel oil oil product, aqueous adaptation for high reliability
Property is good).
Lubricated using fuel oil more than current high pressure, express pump, i.e. driver part (cam, roller, the roller of high-pressure oil pump
Seat, tappet body, plunger tail etc.) friction pair lubricated by fuel oil that its own is supplied.But due to the poor lubricity of fuel oil,
Under top load, rotating speed high, often there is drive mechanism friction pair wear out failure, and requirement to fuel oil oil product is higher.
To break through the limitation of fuels lubricity, introduce engine lubrication machine oil to lubricate rubbing for the driver part of high-pressure oil pump
Wipe secondary, be also the fuel pump of oil lubricating.Because oil lubricating is good, the drive mechanism attached wear out failure of friction that it is lubricated is big
To reduce.But oil lubricating high pressure fuel pump can face new machine oil and blend problem with fuel oil simultaneously.Fuel oil can be made into machine oil
Into oil dilution, the lubricity of machine oil is drastically reduced；Machine oil can cause fuel injection system obstruction, coking, soot into fuel oil
Discharge increases.Especially for state five, the stage of state six, the emission request of particle is stricter, and machine oil needs tight with the blending of fuel oil
Lattice are limited.Relatively reliable, effective measure for preventing machine oil and fuel oil blending is needed to this oil lubricating pump.
As can be seen here, above-mentioned existing high pressure fuel pump is upper with use in structure, it is clear that still suffered from inconvenience and defect, and
Urgently it is further improved.A kind of high pressure fuel pump of new oil lubricating how is founded, need to be changed as current industry pole
The target entered.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of high pressure fuel pump of oil lubricating, makes its high lubricating effect,
Can also prevent machine oil fuel oil from blending, so as to overcome the shortcomings of existing high pressure fuel pump.
In order to solve the above technical problems, the present invention provides a kind of high pressure fuel pump of oil lubricating, including the pump housing, cam
Axle, actuator, one or more plunger pair, and the tappet body corresponding with the plunger pair, the plunger pair include
Plunger in plunger mat and the hole that sets within it, the camshaft is located at pump housing middle part, and the actuator is arranged on described
Camshaft outside contacts with the tappet body bottom, and the plunger bushing is fixedly connected with the pump housing, the plunger base and institute
The contact of tappet body boss face is stated, plunger spring is provided between the plunger bushing and tappet body, the bottom of the plunger spring is provided with
Plunger spring seat for plunger base to be held in the tappet body boss face, the tappet body and plunger are in the camshaft
Moved up and down along the plunger bushing endoporus direction with the presence of plunger spring,
The high pressure fuel pump includes oil lubricating mechanism, and the oil lubricating mechanism includes being opened on the pump housing
Machine oil oil inlet pipe and machine oil flowline, and the pump housing groove on the pump housing with the tappet body wall contacts is opened in, it is described
Machine oil oil inlet pipe is divided into two-way in the pump housing, and the first branch is connected with the pump housing machine oil chamber in the pump housing, the pump housing machine oil
Chamber is the cavity for accommodating the camshaft, and the second branch is connected with the pump housing groove, is opened up on the lateral wall of the tappet body
There is the oil hole for connecting tappet body cavity, with moving up and down for the tappet body, between the oil hole and the pump housing groove
Have a rest connection, the tappet body cavity is connected with the pump housing machine oil chamber by drain path, the machine oil flowline and the pump housing
Machine oil chamber connects.
Used as a modification of the present invention, the oil-out vertical height of the machine oil flowline is higher than in the cam shaft
The vertical height of the heart, the drain path is opened on the tappet body or on the pump housing.
Further improve, the high pressure fuel pump also includes plunger seal mechanism, the plunger seal mechanism includes opening up
In the counterbore of the plunger bushing bottom, and seal ring assembly and jump ring in the counterbore are arranged at, the jump ring is used for will
The seal ring assembly axial compression is in the counterbore.
Further improve, the seal ring assembly includes internal plastic seal ring and two exterior resilient seal circles, described
The outer wall middle part of internal plastic seal ring is provided with annular protrusion, and described two exterior resilient seal circles are respectively sleeved at the annular
Raised both sides, and the internal plastic seal ring is provided with upper lip and lower lip with the mating surface of the plunger outer wall.
Further improve, the internal plastic seal ring uses polytetrafluoroethylene (PTFE) or polytetrafluoroethylene (PTFE) filler material, institute
Exterior resilient seal circle is stated using fluorubber material.
Further improve, sealing ring pad is provided between the seal ring assembly and jump ring.
Further improve, plunger bushing briquetting is additionally provided with the counterbore, the plunger bushing briquetting is arranged on the sealing ring
Between component and the counterbore top surface.
Further improve, on the inside of the end face that the plunger bushing briquetting is contacted with the counterbore top surface or in the counterbore top surface
Side offers ring-shaped step hole, and the plunger bushing spill port being connected with the ring-shaped step hole is further opened with the counterbore top surface,
The plunger bushing spill port enters fuel oil oil duct and communicates with the pump housing on the plunger bushing.
Further improve, between the plunger bushing endoporus inwall and the plunger outer wall above the ring-shaped step hole are used
Gap is sealed, and the plunger bushing briquetting inwall below the ring-shaped step hole uses clearance seal, and institute with the plunger outer wall
The up and down stroke of the length more than the plunger of plunger bushing briquetting is stated, the seal ring assembly is matched somebody with somebody with plunger outer wall sealing
Close.
Further improve, the gap between plunger bushing endoporus inwall and the plunger outer wall above the ring-shaped step hole
Width is 2 μm~5 μm, and the length of the clearance seal is more than 20mm.
Further improve, undercut groove is offered on the endoporus inwall of the plunger bushing, offered on the plunger bushing and institute
The connected plunger bushing spill port of undercut groove is stated, the plunger bushing spill port enters fuel oil oil duct phase with the pump housing on the plunger bushing
It is logical.
Further improve, the plunger bushing endoporus inwall above the undercut groove is close using gap with the plunger outer wall
Envelope, in the plunger bushing endoporus inwall, the plunger bushing briquetting inwall and the seal ring assembly below the undercut groove
Wall is sealed with the plunger outer wall and coordinated.
Further improve, when the high pressure fuel pump includes multiple plunger pairs and corresponding multiple tappet bodies, with
Connected by groove intercommunicating pore between the multiple described pump housing groove of the multiple tappet body wall contacts.
Further improve, tappet body cavity connecting hole is provided between the tappet body cavity of the multiple tappet body.
Further improve, the high pressure fuel pump also includes pressure limiting valve module,
Offer the multiple machine oil oil ducts for being connected with tappet body cavity respectively on the pump housing, the multiple machine oil oil duct it is another
One end connects the entrance of the pressure limiting valve module respectively, and the outlet of the pressure limiting valve module is connected with the pump housing machine oil chamber.
Further improve, the actuator is roller, the arc that the tappet body bottom is provided with the roller coordinates is recessed
Groove.
Further improve, the tappet body bottom outside is provided with step surface, the step surface and bushing interference fit, described
Bushing is used to limit the roller axial float.
After such design, the present invention at least has advantages below：
1) it is of the invention by setting oil lubricating mechanism, using the friction pair of the oil lubricating high pressure fuel pump, lubricity
Can be good, the shortcomings of overcome fuel oil lubricating pump easy to wear, oil product requirement high, bad adaptability, it is adapted to high pressure, rotating speed high, compact height
The product demand of effect.
2) the intermittent communication when present invention is moved up and down by pump housing groove and oil hole with tappet body, it is ensured that tappet body cavity
Machine oil is inside filled with, is that plunger base and tappet body boss face friction pair provide oil lubricating；Simultaneously by optimizing the straight of oil hole
Footpath, pump housing recess width and oil hole and pump housing groove control suitable oil flow rate along the relative position of plunger axial direction.
3) for the high pressure fuel pump of twin columns plug structure, the company between two tappet body cavitys is realized by tappet body intercommunicating pore
Logical, using pump, in the course of the work there is compression and the phase difference for expanding in both sides tappet body cavity, and two tappets of balance are endoceliac
Engine oil pressure；Also it is connected with pressure limiting valve module by tappet body cavity, prevents chamber inner engine oil hypertonia, is reduced machine oil and enter combustion
The risk of oil；Elastoplasticity seal ring assembly is avoided to be failed because bearing too high engine oil pressure simultaneously.For single-column plug structure
High pressure fuel pump, opens up drain path for connecting tappet body cavity and pump housing machine oil chamber, is used to balance the engine oil pressure in two chambers.
4) the invention is characterized in that the method for segmented seal, and processing fuel flow returns hole and annular oil cavity, and will be ring-like
Oil pocket enters fuel oil oil duct and is connected by fuel flow returns hole and pump, it can be ensured that plunger stage casing is in low-pressure state, greatly reduces
Fuel oil also prevents lower seal structure from being failed because bearing too high fuel pressure, fabulous limit to the disclosure risk of machine oil side
The blending of machine oil and fuel oil is made, has been applied to meet state five, the oil lubricating high pressure fuel pump of the discharge of the stage particle of state six.
5) plunger bushing spill port, plunger bushing stepped hole processing technology are simple in the present invention, and position adjustment is flexible.
6) present invention also utilizes monoblock type tappet body structure, eliminates roller base member, and roller directly coordinates with tappet body,
Assembly process process is improved, and uses monoblock type tappet body structure, and tappet body rigidity increases, and structure arrangement is compacter.
Brief description of the drawings
Above-mentioned is only the general introduction of technical solution of the present invention, in order to better understand technological means of the invention, below
With reference to accompanying drawing, the present invention is described in further detail with specific embodiment.
Fig. 1 is the structural representation of high pressure fuel pump embodiment one of the present invention.
Fig. 2 is the side sectional view of high pressure fuel pump embodiment one of the present invention.
Fig. 3 is the structure sectional view of high pressure fuel pump embodiment one of the present invention.
Fig. 4 is the middle pump body of high pressure fuel pump embodiment one connection arrangement sectional view of the present invention.
Fig. 5 is the sectional view of seal ring assembly in high pressure fuel pump embodiment one of the present invention.
Fig. 6 is the sectional view of plunger bushing embodiment one in high pressure fuel pump embodiment one of the present invention.
Fig. 7 is the sectional view of plunger bushing embodiment two in high pressure fuel pump embodiment one of the present invention.
Fig. 8 is the structure sectional view of tappet body in high pressure fuel pump embodiment one of the present invention.
Fig. 9 is the structure sectional side view of tappet body in high pressure fuel pump embodiment one of the present invention.
Figure 10 is pressure limiting valve module installation site and oil circuit section view in the pump housing in high pressure fuel pump embodiment one of the present invention
Figure.
Figure 11 is the structural representation of high pressure fuel pump embodiment two of the present invention.
Figure 12 is the side sectional view of high pressure fuel pump embodiment two of the present invention.
Wherein, the pump housing 1, plunger bushing 2, plunger 3, tappet body 4, bushing 5, roller 6, camshaft 7, bearing shell 8, oil sucting valve 9, go out
Oil valve assembly 11, plunger spring 12, plunger bushing briquetting 13, elastoplasticity sealing ring coil assembly 14, sealing ring pad 15, jump ring 16,
Plunger spring seat 17, plug 19, plunger cavity 20, tappet body cavity 21, pump housing machine oil chamber 22, machine oil oil inlet pipe 23, machine oil flowline
24th, annular oil cavity 25, fuel oil oil inlet pipe 26, fuel oil return pipe 27, fuel metering valve module 28, pressure limiting valve module 29.
Specific embodiment
Embodiment one
Referring to the drawings shown in 1 to 10, the present embodiment high pressure fuel pump is the high pressure fuel pump of twin columns plug structure, including the pump housing
1st, camshaft 7, actuator, two plunger pairs, and the two tappet bodies 4 corresponding with two plunger pairs.The plunger pair bag
Plunger bushing 2 and the plunger 3 set within it in hole are included, the camshaft 7 is located at the middle part of pump housing 1, and it is convex that the actuator is arranged on this
The outside of wheel shaft 7 contacts with the bottom of tappet body 4, and the plunger bushing 2 is fixedly connected with the pump housing 1, the bottom of plunger 3 and the tappet body
4 boss face 4c are contacted, and plunger spring 12 is provided between the plunger bushing 2 and tappet body 4, the bottom of the plunger spring 12 be provided with for
The bottom of plunger 3 is held in the plunger spring seat 17 of tappet body boss face 4c, the tappet body 4 and plunger 3 are in the He of camshaft 7
Moved up and down along the endoporus direction of plunger bushing 2 in the presence of plunger spring 12.
The high pressure fuel pump includes oil lubricating mechanism, and the oil lubricating mechanism includes the machine oil being opened on the pump housing 1
Oil inlet pipe 23 and machine oil flowline 24, and it is opened in the pump housing groove 1c on the pump housing 1 with the wall contacts of tappet body 4.Should
Machine oil oil inlet pipe 23 is connected with engine oil pump, and the machine oil oil inlet pipe 23 is divided into two-way, first in the high pressure fuel pump pump housing 1
Branch 1d is connected with the pump housing machine oil chamber 22 in the pump housing 1, and the pump housing machine oil chamber 22 is the cavity of the receiving camshaft 7, so
The friction pair between high-pressure oil pump camshaft 7 and bearing shell 8 can be lubricated from the machine oil of first branch press-in, the combustion after lubrication
Oil is flowed back in pump housing machine oil chamber 22.Second branch is connected with pump housing groove 1c, offered on the lateral wall of the tappet body 4 for
Connect the oil hole 4b of tappet body cavity.In the high pressure fuel pump course of work, with moving up and down for the tappet body 4, the oil hole
4b and the pump housing groove 1c intermittent communications, under the driving of machine oil hydraulic, can be filled with machine oil in tappet body cavity 21, it is ensured that plunger tail
Lubrication portion 3f secondary with tappet body boss top surface 4c friction fits.By adjusting oil hole 4b apertures and its with pump housing groove 1c's
Relative position, can control the oil flow rate for flowing into.Certainly, two pump housing grooves in the high pressure fuel pump of the twin columns plug structure
Connected by groove intercommunicating pore 1e between 1c and 1c '.
The machine oil flowline 24 is connected with the pump housing machine oil chamber 22.And the oil-out vertical height of the machine oil flowline 24 is high
In the vertical height at the axle center of camshaft 7, with the machine oil for ensureing to have certain liquid level in pump housing machine oil chamber 22.In high pressure
In the fuel pump course of work, the reciprocating motion band oil for getting rid of oil, tappet body assembly is rotated with camshaft 7, make the drive of high pressure fuel pump
The friction pair of dynamic component is placed in the environment of machine oil.
In order to reduce the engine oil pressure in tappet body cavity 21, drain path, this reality are opened up on tappet body 4 or on the pump housing 1
It is the draining through hole 4f being opened on tappet body 4 to apply example, as shown in Figure 9, can make pump housing machine oil chamber 22 and tappet body cavity 21 it
Between connect, the machine oil of the tappet body cavity 21 can be back in pump housing machine oil chamber 22.
Due also in high pressure fuel pump operation process, the reciprocating motion of the component high speed of tappet body 4, the stream of draining through hole 4f
Logical limited area, to prevent, the machine oil in tappet body cavity 21 is compressed to produce too high instantaneous pressure, the height of the twin columns plug structure
Tappet body cavity intercommunicating pore 1f is opened up between two tappet body cavitys 21 of compression ignition oil pump, to connect tappet body cavity 21 with an other cylinder
Hold out the ＇ of body cavity 21, and using pump, tappet body cavity in both sides has compression and the phase difference for expanding in the course of the work, balances both sides tappet
Endoceliac engine oil pressure.
Also for preventing the too high situation of the engine oil pressure in tappet body cavity 21 from occurring, reduce the wind that machine oil enters fuel oil
Danger, also opens up connection two machine oil oil duct 1g, 1g of tappet body cavitys respectively on the pump housing 1 ', two machine oil oil ducts 1g, the 1g '
The two entrances of pressure limiting valve module 29 are connected respectively, and when the pressure of tappet body cavity 21 is higher than setting pressure limit, pressure limiting valve is opened
Open, machine oil is flowed back in pump housing machine oil chamber 22 through pressure limiting valve oil return oil duct 1i.
In order to prevent the blending of machine oil fuel oil in the high pressure fuel pump, the high pressure fuel pump also includes plunger seal mechanism.
Referring to the drawings shown in 2, the plunger seal mechanism includes being opened in the counterbore of the bottom of plunger bushing 2, and the counterbore includes counter bore side
2e and counterbore top surface 2f, processes the plunger bushing spill port 2b and ring-shaped step hole 2g for communicating therewith, the ring on counterbore top surface 2f
Shape stepped hole 2g forms annular oil cavity 25, and the plunger bushing spill port 2b enters fuel oil oil duct 2a and communicates with the pump housing on the plunger bushing 2.
Certain ring-shaped step hole can also be opened in the end face inner side of plunger bushing briquetting 13.Plunger bushing briquetting 13, post are pressed into counterbore
Plug sleeve briquetting outside wall surface 13b and counter bore side 2e crosses win assembling, and overall fine grinding plunger bushing endoporus 2d and plunger bushing after mounting
Briquetting endoporus 13a.Seal ring assembly 14, sealing ring pad 15 are pressed into pump assembling process in plunger bushing counterbore 2e, and by card
The axial compression of spring 16 realizes that seal assembly is fixed.
Wherein, referring to the drawings shown in 5, the seal ring assembly 14 includes inside plastic seal ring 14a and two outside elasticity
Sealing ring 14b, the outer wall middle part of inside plastic seal ring 14a is provided with annular protrusion, two exterior resilient seal circle 14b points
The annular protrusion both sides are not set in, and inside plastic seal ring 14a is provided with lip with the mating surface of the outer wall of plunger 3
14c and lower lip 14d.Inside plastic seal ring 14a uses polytetrafluoroethylene (PTFE) or polytetrafluoroethylene (PTFE) filler material, outside this
Elastic seal ring 14b uses fluorubber material.
Referring to the drawings shown in 3, the high pressure fuel pump of the oil lubricating belongs to dynamic sealing, in the high pressure fuel pump course of work
In, plunger head 3a is contacted with high pressure fuel, and bottom 3f is contacted with machine oil；Pumped with plunger 3, fuel oil is easy with machine oil
Blend.The characteristics of for oil lubricating high pressure fuel pump, the method for segmented seal is taken to realize avoiding machine oil fuel oil from blending.
Concrete structure is as follows：
Plunger bushing endoporus inwall 2d and plunger outer wall epimere 3b above the ring-shaped step hole uses clearance seal, should
Gap width is 2 μm~5 μm, and to reduce the amount of leakage of high pressure fuel, the length of the clearance seal is more than 20mm.That is,
Amount of leakage of the high pressure fuel to low pressure can be reduced by controlling the fit clearance of male part and coupling seal length.This measure can
The pump oil efficiency of the fuel pump for significantly improving, it is especially pronounced in the slow-speed of revolution, rail pressure operating mode high.At 3c on the upside of plunger stage casing, post
Ring-like oil pocket 25 is formed between plug sleeve 2 and plunger bushing briquetting 13, the ring-like oil pocket 25 is by plunger bushing spill port 2b and pump oil-feed oil
Road 2a is connected, because the pressure in pump oil-feed oil duct 2a is relatively low (being less than 8bar), the fuel oil from the leakage of epimere gap is through ring-like oil
Chamber 25 is back to pump oil-feed oil duct 2a. again because plunger head fit clearance is more long, and the fuel oil amount of leakage through the mating surface is less,
Fuel pressure in ring-like oil pocket 25 is close with the pressure of pump oil-feed oil duct 2a, thereby guarantees that at the fuel oil in annular oil cavity 25
In low-pressure state.
The plunger bushing briquetting inwall below the ring-shaped step hole uses clearance seal with plunger outer wall stage casing downside 3d,
The fuel oil and machine oil blending for moving up and down caused because of the outside wall surface band oil of plunger 3, and the plunger bushing briquetting can preferably be limited
Up and down stroke of 13 length more than the plunger.The seal ring assembly 14 is sealed with plunger outer wall hypomere 3e and coordinated, for preventing
Only machine oil is scurried into and limit simultaneously machine oil with fuel oil blending.
It is, of course, also possible to offer undercut groove 2i on the endoporus inwall of the plunger bushing 2, offered and this on the plunger bushing
On the plunger bushing spill port 2b ' that undercut groove 2i connected inclination is processed, the plunger bushing spill port 2b ' and the plunger bushing 2
The pump housing enters fuel oil oil duct 2a and communicates.During the structure, the plunger bushing endoporus inwall above undercut groove 2i is adopted with the plunger outer wall
With clearance seal, the endoporus inwall of plunger bushing 2, the inwall of plunger bushing briquetting 13 and the sealing ring group below undercut groove 2i
The inwall of part 14 is sealed with the outer wall of plunger 3 and coordinated.
The course of work of high pressure fuel pump of said engine oil lubrication is：
The fuel oil in the connection oil transfer pump of fuel oil oil inlet pipe 26 downstream, fuel oil oil-out 2c connects oily rail, combustion by high-pressure oil pipe
The BOR Bunker of Redelivery oil return circuit of oily oil return pipe 27, fuel metering valve 28 connects control electric current signal, and machine oil oil inlet pipe 23 introduces engine machine
Lubricating oil after oil pump pressurization, machine oil flowline 24 connects engine sump tank, and the input engine driving of high-pressure oil pump camshaft 7 is turned round
Square drives camshaft 7 to rotate.
High-pressure oil pump oil suction stage, the fuel oil of oil transfer pump pressurization flows into plunger bushing oil-feed through the throttle orifice of fuel metering valve 28
Oil duct 2a, plunger spring 12 promotes plunger 3 descending, and the fuel pressure of plunger cavity 20 reduction, oil sucting valve 9 is opened, and fuel oil flows into post
Plug chamber 20.
High-pressure oil pump presses oil the stage, and camshaft 7 rotarily drives tappet body 4 and plunger 3 and moved to top dead centre, and plunger 3 pairs is right
In plunger cavity 20 fuel oil compression, after fuel pressure is increased to a threshold value, promote oil outlet valve component 11 open, high pressure fuel by
Oil-out 2c feeds oily rail.
Embodiment two
Referring to the drawings shown in 11 and 12, the present embodiment high pressure fuel pump is the high pressure fuel pump of single-column plug structure, its with it is upper
Stating the difference of embodiment one is, only one of which plunger pair and a tappet body, and two are connected during without setting above-mentioned twin columns plug structure
Passage between individual pump housing groove, two tappet body cavitys, need to only open up drain path 1h connection tappets body cavity 21 and pump housing machine oil
Chamber 22, is used to balance the engine oil pressure in two chambers.Remainder is identical with above-described embodiment one, no longer goes to live in the household of one's in-laws on getting married herein
State.
Certainly, the high pressure fuel pump of the oil lubricating can also be three and above plunger pair, its structure and embodiment one
Plant twin columns plug structure similar.
In addition, using monoblock type tappet body in the present invention, the monoblock type tappet body integrated driving part and tappet body are integrated.
Referring to the drawings shown in 8 and 9, concrete structure is：Actuator is roller 6, and the bottom of tappet body 4 is provided with matches somebody with somebody with roller outer surface 6a
The arc groove 4d of conjunction.The bottom outside of tappet body 4 is additionally provided with step surface 4e, and step surface 4e matches somebody with somebody with sleeve inner surface 5a interference
Close, for limiting the axial float of roller 6.
The main friction pairs of the driver part using engine motor oil lubrication high pressure fuel pump of the invention, high lubricating effect,
The shortcomings of overcoming fuel oil lubricating pump easy to wear, oil product requirement high, bad adaptability, is adapted to high pressure, rotating speed high, compact efficient
Product demand.
The present invention is integrated with roller with the function of tappet body in one using monoblock type tappet body structure, improves assembler
Skill；Also for preventing the blending of machine oil and fuel oil, using the method for segmented seal, to the leakage between machine oil and fuel oil and blending
Take gradual control.The high pressure fuel pump of oil lubricating of the present invention is satisfied with high pressure, rotating speed high, compact efficient, maximum discharge index
Product demand.
The above, is only presently preferred embodiments of the present invention, and any formal limitation is not made to the present invention, this
Art personnel make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all fall within this hair
In bright protection domain.
Claims (17)
1. a kind of high pressure fuel pump of oil lubricating, including the pump housing, camshaft, actuator, one or more plunger pair, with
And the tappet body corresponding with the plunger pair, the plunger pair includes the plunger in plunger mat and the hole that sets within it, described
Camshaft is located at pump housing middle part, and the actuator is arranged on the camshaft outside and is contacted with the tappet body bottom, institute
State plunger bushing to be fixedly connected with the pump housing, the plunger base is contacted with the tappet body boss face, the plunger bushing with very
Plunger spring is provided between cylinder, the bottom of the plunger spring is provided with for plunger base to be held in into the tappet body boss
The plunger spring seat in face, the tappet body and plunger are in the presence of the camshaft and plunger spring along the plunger bushing endoporus
Direction moves up and down, it is characterised in that
The high pressure fuel pump includes oil lubricating mechanism, and the oil lubricating mechanism includes the machine oil being opened on the pump housing
Oil inlet pipe and machine oil flowline, and it is opened in the pump housing groove on the pump housing with the tappet body wall contacts, the machine oil
Oil inlet pipe is divided into two-way in the pump housing, and the first branch is connected with the pump housing machine oil chamber in the pump housing, and the pump housing machine oil chamber is
The cavity of the camshaft is accommodated, the second branch is connected with the pump housing groove, and use is offered on the lateral wall of the tappet body
In the oil hole of connection tappet body cavity, with moving up and down for the tappet body, the oil hole connects with pump housing groove interval
Logical, the tappet body cavity is connected with the pump housing machine oil chamber by drain path, the machine oil flowline and the pump housing machine oil
Chamber connects.
2. the high pressure fuel pump of oil lubricating according to claim 1, it is characterised in that the machine oil flowline it is fuel-displaced
Higher than the vertical height at the cam shaft center, the drain path is opened on the tappet body or described mouth vertical height
On the pump housing.
3. the high pressure fuel pump of oil lubricating according to claim 1, it is characterised in that the high pressure fuel pump also includes
Plunger seal mechanism, the plunger seal mechanism includes being opened in the counterbore of the plunger bushing bottom, and is arranged at described sinking
Seal ring assembly and jump ring in hole, the jump ring are used for the seal ring assembly axial compression in the counterbore.
4. the high pressure fuel pump of oil lubricating according to claim 3, it is characterised in that in the seal ring assembly includes
Portion's plastic seal ring and two exterior resilient seal circles, the outer wall middle part of the internal plastic seal ring are provided with annular protrusion, institute
State two exterior resilient seal circles and be respectively sleeved at the annular protrusion both sides, and the internal plastic seal ring and the plunger
The mating surface of outer wall is provided with lip and lower lip.
5. the high pressure fuel pump of oil lubricating according to claim 4, it is characterised in that the internal plastic seal ring is adopted
With polytetrafluoroethylene (PTFE) or polytetrafluoroethylene (PTFE) filler material, the exterior resilient seal circle is using fluorubber material.
6. the high pressure fuel pump of oil lubricating according to claim 3, it is characterised in that the seal ring assembly and jump ring
Between be provided with sealing ring pad.
7. the high pressure fuel pump of oil lubricating according to claim 3, it is characterised in that be additionally provided with plunger in the counterbore
Set briquetting, the plunger bushing briquetting is arranged between the seal ring assembly and the counterbore top surface.
8. the high pressure fuel pump of oil lubricating according to claim 7, it is characterised in that the plunger bushing briquetting with it is described
The end face inner side of counterbore top surface contact or the counterbore inside top surface offer ring-shaped step hole, are also opened up on the counterbore top surface
There is the plunger bushing spill port being connected with the ring-shaped step hole, the plunger bushing spill port enters combustion with the pump housing on the plunger bushing
Oil duct is communicated.
9. the high pressure fuel pump of oil lubricating according to claim 8, it is characterised in that above the ring-shaped step hole
The plunger bushing endoporus inwall uses clearance seal with the plunger outer wall, the plunger casing pressure below the ring-shaped step hole
Block inwall and the plunger outer wall use clearance seal, and the plunger bushing briquetting up-downgoing of the length more than the plunger
Journey, the seal ring assembly is sealed with the plunger outer wall and coordinated.
10. the high pressure fuel pump of oil lubricating according to claim 9, it is characterised in that the ring-shaped step hole top
Plunger bushing endoporus inwall and the plunger outer wall between gap width be 2 μm~5 μm, and the length of the clearance seal is big
In 20mm.
The high pressure fuel pump of 11. oil lubricatings according to claim 7, it is characterised in that in the endoporus of the plunger bushing
Undercut groove is offered on wall, the plunger bushing spill port being connected with the undercut groove, the plunger bushing are offered on the plunger bushing
Spill port enters fuel oil oil duct and communicates with the pump housing on the plunger bushing.
The high pressure fuel pump of 12. oil lubricatings according to claim 11, it is characterised in that the institute above the undercut groove
State plunger bushing endoporus inwall and use clearance seal with the plunger outer wall, in the plunger bushing endoporus below the undercut groove
Wall, the plunger bushing briquetting inwall and the seal ring assembly inwall are sealed with the plunger outer wall and coordinated.
The high pressure fuel pump of 13. oil lubricating according to any one of claim 1 to 12, it is characterised in that when the height
When compression ignition oil pump includes multiple plunger pairs and corresponding multiple tappet bodies, the multiple with the multiple tappet body wall contacts
Connected by groove intercommunicating pore between the pump housing groove.
The high pressure fuel pump of 14. oil lubricatings according to claim 13, it is characterised in that the multiple tappet body very
Tappet body cavity connecting hole is provided between cylinder chamber.
The high pressure fuel pump of 15. oil lubricatings according to claim 14, it is characterised in that the high pressure fuel pump is also wrapped
Pressure limiting valve module is included,
The multiple machine oil oil ducts for being connected with tappet body cavity respectively, the other end of the multiple machine oil oil duct are offered on the pump housing
The entrance of the pressure limiting valve module is connected respectively, and the outlet of the pressure limiting valve module is connected with the pump housing machine oil chamber.
The high pressure fuel pump of 16. oil lubricatings according to claim 1, it is characterised in that the actuator is roller, institute
State tappet body bottom and be provided with the arc groove coordinated with the roller.
The high pressure fuel pump of 17. oil lubricatings according to claim 16, it is characterised in that the tappet body bottom outside
Step surface, the step surface and bushing interference fit are provided with, the bushing is used to limit the roller axial float.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710169951.5A CN106762273B (en) | 2017-03-21 | 2017-03-21 | High-pressure fuel pump lubricated by engine oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710169951.5A CN106762273B (en) | 2017-03-21 | 2017-03-21 | High-pressure fuel pump lubricated by engine oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106762273A true CN106762273A (en) | 2017-05-31 |
| CN106762273B CN106762273B (en) | 2022-05-20 |
Family
ID=58966345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710169951.5A Active CN106762273B (en) | 2017-03-21 | 2017-03-21 | High-pressure fuel pump lubricated by engine oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106762273B (en) |
Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB296073A (en) * | 1927-08-25 | 1928-09-27 | Tecalemit Ltd | Improvements relating to internal combustion or explosion engines |
| US5567134A (en) * | 1994-06-24 | 1996-10-22 | Nippondenso Co., Ltd. | High-pressure fuel-feed pump |
| EP0972936A2 (en) * | 1998-07-14 | 2000-01-19 | LUCAS INDUSTRIES public limited company | Positive displacement pumps |
| US6047682A (en) * | 1996-07-17 | 2000-04-11 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Accumulating type fuel injection control |
| US6192864B1 (en) * | 1999-06-15 | 2001-02-27 | Isuzu Motors Limited | Common-rail fuel-injection system |
| CN2440949Y (en) * | 2000-09-08 | 2001-08-01 | 无锡威孚集团有限公司 | Oil jetting pump |
| US20020157643A1 (en) * | 2000-04-20 | 2002-10-31 | Bosch Rexroth Corporation | Suction controlled pump for HEUI systems |
| CN1746471A (en) * | 2005-09-30 | 2006-03-15 | 无锡开普动力有限公司 | Air-cooled diesel engine |
| US7025044B1 (en) * | 2003-07-16 | 2006-04-11 | R. H. Sheppard Co., Inc. | Pump assembly and method |
| US20090288639A1 (en) * | 2008-04-25 | 2009-11-26 | Hitachi, Ltd. | Mechanism for Restraining Fuel Pressure Pulsation and High Pessure Fuel Supply Pump of Internal Combustion Engine with Such Mechanism |
| US20100024779A1 (en) * | 2008-08-01 | 2010-02-04 | Denso Corporation | Fuel supply pump |
| KR20100064890A (en) * | 2008-12-05 | 2010-06-15 | 현대자동차주식회사 | Fuel pump lubrication apparatus driven by cam |
| CN201606123U (en) * | 2009-10-22 | 2010-10-13 | 柳州五菱柳机动力有限公司 | Camshaft bearing cap of minicar engine |
| CN201818411U (en) * | 2010-10-27 | 2011-05-04 | 博世汽车柴油系统股份有限公司 | Fuel injection pump |
| US20110303195A1 (en) * | 2010-06-10 | 2011-12-15 | Robert Lucas | Single piston pump with dual return springs |
| US20120145131A1 (en) * | 2010-12-10 | 2012-06-14 | Denso Corporation | Fuel supply pump |
| CN202301001U (en) * | 2011-07-30 | 2012-07-04 | 郑国璋 | Sealing and lubricating structure of plunger of ultrahigh-pressure plunger pump |
| JP2012145061A (en) * | 2011-01-14 | 2012-08-02 | Hitachi Automotive Systems Ltd | High-pressure fuel supply pump |
| US20120199103A1 (en) * | 2009-10-06 | 2012-08-09 | Hitachi Automotive Systems Ltd | High-Pressure Fuel Pump |
| CN202468118U (en) * | 2012-03-13 | 2012-10-03 | 山东鑫亚工业股份有限公司 | Flange of fuel injection system |
| US20120312278A1 (en) * | 2010-02-26 | 2012-12-13 | Hitachi Automotive Systems, Ltd. | High-pressure fuel supply pump |
| CN103089507A (en) * | 2013-01-09 | 2013-05-08 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Double-row six-cylinder radial type common-rail oil feed pump |
| JP2013151933A (en) * | 2011-12-28 | 2013-08-08 | Akasaka Tekkosho:Kk | Fuel injection auxiliary device and fuel injection pump having fuel injection auxiliary device |
| US20140102417A1 (en) * | 2011-06-02 | 2014-04-17 | DELPHI TECHNOLOGIES HOLDING S.a.r.I. | Fuel pump assembly |
| CN104265531A (en) * | 2014-09-29 | 2015-01-07 | 北京亚新科天纬油泵油嘴股份有限公司 | Hydraulic-drive tappet body return high pressure common rail pump |
| CN204140250U (en) * | 2014-09-29 | 2015-02-04 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of high voltage common rail pump of hydraulic driving tappet body return |
| US20160215663A1 (en) * | 2015-01-22 | 2016-07-28 | Denso Corporation | Lubricating device for internal combustion engine |
| CN106121888A (en) * | 2016-08-26 | 2016-11-16 | 龙口龙泵燃油喷射有限公司 | Single cylinder high pressure co-rail diesel pump assembly for common rail system |
| CN106121889A (en) * | 2016-08-30 | 2016-11-16 | 重庆红江机械有限责任公司 | High Enhanced diesel engine constant-pressure oil injection pump |
| CN206545556U (en) * | 2017-03-21 | 2017-10-10 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of high pressure fuel pump of oil lubricating |
-
2017
- 2017-03-21 CN CN201710169951.5A patent/CN106762273B/en active Active
Patent Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB296073A (en) * | 1927-08-25 | 1928-09-27 | Tecalemit Ltd | Improvements relating to internal combustion or explosion engines |
| US5567134A (en) * | 1994-06-24 | 1996-10-22 | Nippondenso Co., Ltd. | High-pressure fuel-feed pump |
| US6047682A (en) * | 1996-07-17 | 2000-04-11 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Accumulating type fuel injection control |
| EP0972936A2 (en) * | 1998-07-14 | 2000-01-19 | LUCAS INDUSTRIES public limited company | Positive displacement pumps |
| US6192864B1 (en) * | 1999-06-15 | 2001-02-27 | Isuzu Motors Limited | Common-rail fuel-injection system |
| US20020157643A1 (en) * | 2000-04-20 | 2002-10-31 | Bosch Rexroth Corporation | Suction controlled pump for HEUI systems |
| CN2440949Y (en) * | 2000-09-08 | 2001-08-01 | 无锡威孚集团有限公司 | Oil jetting pump |
| US7025044B1 (en) * | 2003-07-16 | 2006-04-11 | R. H. Sheppard Co., Inc. | Pump assembly and method |
| CN1746471A (en) * | 2005-09-30 | 2006-03-15 | 无锡开普动力有限公司 | Air-cooled diesel engine |
| US20090288639A1 (en) * | 2008-04-25 | 2009-11-26 | Hitachi, Ltd. | Mechanism for Restraining Fuel Pressure Pulsation and High Pessure Fuel Supply Pump of Internal Combustion Engine with Such Mechanism |
| US20100024779A1 (en) * | 2008-08-01 | 2010-02-04 | Denso Corporation | Fuel supply pump |
| KR20100064890A (en) * | 2008-12-05 | 2010-06-15 | 현대자동차주식회사 | Fuel pump lubrication apparatus driven by cam |
| US20120199103A1 (en) * | 2009-10-06 | 2012-08-09 | Hitachi Automotive Systems Ltd | High-Pressure Fuel Pump |
| CN201606123U (en) * | 2009-10-22 | 2010-10-13 | 柳州五菱柳机动力有限公司 | Camshaft bearing cap of minicar engine |
| US20120312278A1 (en) * | 2010-02-26 | 2012-12-13 | Hitachi Automotive Systems, Ltd. | High-pressure fuel supply pump |
| US20110303195A1 (en) * | 2010-06-10 | 2011-12-15 | Robert Lucas | Single piston pump with dual return springs |
| CN201818411U (en) * | 2010-10-27 | 2011-05-04 | 博世汽车柴油系统股份有限公司 | Fuel injection pump |
| US20120145131A1 (en) * | 2010-12-10 | 2012-06-14 | Denso Corporation | Fuel supply pump |
| JP2012145061A (en) * | 2011-01-14 | 2012-08-02 | Hitachi Automotive Systems Ltd | High-pressure fuel supply pump |
| US20140102417A1 (en) * | 2011-06-02 | 2014-04-17 | DELPHI TECHNOLOGIES HOLDING S.a.r.I. | Fuel pump assembly |
| CN202301001U (en) * | 2011-07-30 | 2012-07-04 | 郑国璋 | Sealing and lubricating structure of plunger of ultrahigh-pressure plunger pump |
| JP2013151933A (en) * | 2011-12-28 | 2013-08-08 | Akasaka Tekkosho:Kk | Fuel injection auxiliary device and fuel injection pump having fuel injection auxiliary device |
| CN202468118U (en) * | 2012-03-13 | 2012-10-03 | 山东鑫亚工业股份有限公司 | Flange of fuel injection system |
| CN103089507A (en) * | 2013-01-09 | 2013-05-08 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Double-row six-cylinder radial type common-rail oil feed pump |
| CN104265531A (en) * | 2014-09-29 | 2015-01-07 | 北京亚新科天纬油泵油嘴股份有限公司 | Hydraulic-drive tappet body return high pressure common rail pump |
| CN204140250U (en) * | 2014-09-29 | 2015-02-04 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of high voltage common rail pump of hydraulic driving tappet body return |
| US20160215663A1 (en) * | 2015-01-22 | 2016-07-28 | Denso Corporation | Lubricating device for internal combustion engine |
| CN106121888A (en) * | 2016-08-26 | 2016-11-16 | 龙口龙泵燃油喷射有限公司 | Single cylinder high pressure co-rail diesel pump assembly for common rail system |
| CN106121889A (en) * | 2016-08-30 | 2016-11-16 | 重庆红江机械有限责任公司 | High Enhanced diesel engine constant-pressure oil injection pump |
| CN206545556U (en) * | 2017-03-21 | 2017-10-10 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of high pressure fuel pump of oil lubricating |
Non-Patent Citations (2)
| Title |
|---|
| 刘普: "民航发动机燃油泵测试台中的关键技术研究", 《中国民航大学》 * |
| 张文明: "燃油泵滑动轴承试验台测控系统的研究", 《合肥工业大学》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106762273B (en) | 2022-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206035700U (en) | A single cylinder high pressure common rail firewood fuel pump assembly for rail system | |
| JPH0212299Y2 (en) | ||
| CN110748446B (en) | Common rail high-pressure oil inlet and outlet valve assembly and common rail high-pressure oil feed pump | |
| CN106121888A (en) | Single cylinder high pressure co-rail diesel pump assembly for common rail system | |
| CN105134440B (en) | Use for diesel engine improves the high-pressure fuel injection pump assembly of structure single cylinder | |
| JP2004132378A (en) | High pressure pump suitable particularly for common injection device | |
| CN204283693U (en) | A kind of common rail system monomer-type Electrocontrolled high-pressure oil pump | |
| CN206545556U (en) | A kind of high pressure fuel pump of oil lubricating | |
| CN102121561A (en) | Displacement-variable gear oil pump | |
| CN101943038A (en) | Installation of diesel engine camshaft and lubrication structure | |
| CN102287367B (en) | Sealing lubrication structure for plunger of ultrahigh pressure plunger pump | |
| JPH034780Y2 (en) | ||
| CN106762273A (en) | A kind of high pressure fuel pump of oil lubricating | |
| CN109268181B (en) | Four-cylinder radially arranged electric control high-pressure common rail oil feed pump | |
| CN109838326B (en) | Improved fuel injection pump for preventing diesel oil of diesel engine from blackening | |
| CN201818412U (en) | Low pressure difference hydraulic sealing high pressure co-rail fuel pump | |
| CN201810358U (en) | Mounting and lubricating structure of diesel engine camshaft | |
| CN204921227U (en) | Diesel engine is with improving structure single cylinder high -pressure oil pump assembly | |
| CN207634124U (en) | A kind of promotion vacuum pump pressure oil channel structures | |
| CN215292737U (en) | Split type automatically controlled monoblock pump | |
| CN201246204Y (en) | Lubricating system of diesel engine | |
| CN104487699B (en) | High-pressure pump | |
| CN210087520U (en) | Improved structure fuel injection pump for preventing diesel oil of diesel engine from blackening | |
| CN210858849U (en) | Lubricating system of engine rocker arm assembly | |
| CN209704737U (en) | High pressure fuel pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180724 Address after: 300000 2 Yulong Road, automobile industrial park, Wuqing District, Tianjin Applicant after: North oil electronic control fuel injection system (Tianjin) Co., Ltd. Address before: No. 3, Cheng Zhuang Road, Fengtai District, Beijing Applicant before: Beijing Yaxin Ketianwei Oil Pume Nozzle Tip Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |