CN108779766A - High-pressure pump with fluid damper - Google Patents
High-pressure pump with fluid damper Download PDFInfo
- Publication number
- CN108779766A CN108779766A CN201780017487.6A CN201780017487A CN108779766A CN 108779766 A CN108779766 A CN 108779766A CN 201780017487 A CN201780017487 A CN 201780017487A CN 108779766 A CN108779766 A CN 108779766A
- Authority
- CN
- China
- Prior art keywords
- pump
- pressure
- chamber
- pressure pump
- diaphragm
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
- F04B11/0016—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a fluid spring
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
-
- 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
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0041—Means for damping pressure pulsations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of high-pressure pumps, with pump case (2), the pump barrel head (4) with pump barrel (3) is disposed in the pump case, wherein, it is disposed with pump push rod (26) in the pump barrel guide portion (27) of pump barrel (3), the pump push rod and pump working chamber (36) and driving mechanism room (8) collective effect being arranged in pump case (2), wherein, pump working chamber (36) fluidly connects via the solenoid-operated suction valve (6) of energy with driving mechanism room (8), also, high-pressure pump has fluid damper.A kind of high-pressure pump is provided according to the present invention, which is improved in terms of the pressure oscillation of fluid to be conveyed in other words pressure pulse.This is realized in the following manner：Fluid damper is configured at a diaphragm (38a, 38b), which is placed in damper chamber (19), in damper chamber setting to pump case (2).
Description
Technical field
The present invention relates to a kind of high-pressure pumps, have pump case, the pump barrel head with pump barrel is disposed in the pump case,
In, be disposed with pump push rod in the pump barrel guide portion of pump barrel, the pump push rod with by fluid-filled pump working chamber and can be arranged in
Can be by fluid-filled driving mechanism room collective effect in pump case, and wherein, pump working chamber can be via the solenoid-operated pumping of energy
It inhales valve to fluidly connect with driving mechanism room, also, the fluid guide of high-pressure pump has fluid damper.
Background technology
This high-pressure pump is as known to 10 2,013 207 393 Al of DE.The high-pressure pump is the fuel injection system of internal combustion engine
A part.The high-pressure pump has pump case, the pump barrel head with pump barrel is disposed in the pump case, wherein in pump barrel
The pump push rod for conveying fuel is disposed in pump barrel guide portion.For this purpose, it is disposed with pump working chamber with abutting pump barrel guide portion, it can
By the driving mechanism room of high-pressure pump the pump working chamber is supplied fuel to via the solenoid-operated suction valve of energy.In addition, high-pressure pump
With fluid damper, which is arranged in the external pump case of high-pressure pump in the inflow zone of fuel.
Fluid damper is encased in case cover, which is fastened in the outside of pump case in pump case.
Invention content
Task of the invention lies in providing a kind of high-pressure pump, the high-pressure pump fluid to be conveyed pressure oscillation in other words
Improved in terms of the damping of pressure pulse.
The task solves in the following manner：Fluid damper is placed in damper chamber, damper chamber setting to pump case
In body.The configuration is primarily based on following cognition：Pressure oscillation or pressure pulse in high pressure pump area may cause air pocket and/or
Lubricating film tearing between the parts of high-pressure pump.In addition, with the coefficient peripheral equipment of high-pressure pump, especially fluid hose
Road is likely to occur vibration in the region of parts thereon, which causes noise.Under worst case, pipeline is in other words
The parts being installed therein such as filter can be damaged or damage.Hitherto known and in actual use, fluid damper installs additional
Lead to high-pressure pump into pipeline or on the outside of high-pressure pump, this constitutes high construction and expends and be also easy to by dry
It disturbs.In addition, for example due to being installed on high-pressure pump and expanding the locational requirement of high-pressure pump in outside by fluid damper.Pass through root
Fluid damper is encased in the damper chamber being integrated into pump case according to what the present invention designed and avoids aforesaid drawbacks.
In the expansion scheme of the present invention, the fluid damper is diaphragm.Construct to diaphragm annular or cylindricality
And there are two opposite annular end faces for tool, they surround inner membrance piece chamber and can move relative to each other.This diaphragm is in principle
Know and can for example be made of metal material.That is, diaphragm chamber construction is between two opposite end faces and is for example inflated to gas
Body.
In the expansion scheme of the present invention, the diaphragm is damped the Fluid pressure load occupied in device chamber in both sides.By
This makes the ideal operation that can realize diaphragm, mode be：The pressure change process of diaphragm both sides is synchronous.In other words, film
The pressure change process of the medium of the piece both sides and membrane surface of diaphragm is identical and there are p1 (t)=p2 (t).Pass through the root of diaphragm
It is supplied by the inflow channel below diaphragm according to the loading and fluid fuel of the present invention so that put down in other words along longitudinal direction the end face
Row is in end face by pressure-loaded.Thus the function and durability of diaphragm are pro influenced.
The present invention another configuration in, the connector that becomes a mandarin be passed directly to or via service duct lead to driving mechanism room and with
In its damper chamber being directly connected to.Pass through the configuration so that the loading position of diaphragm is arranged to use up fluid damper in other words
It may be close to the root of pressure oscillation pressure pulse in other words.
In another configuration of the present invention, at least two diaphragms are disposed in damper chamber.The configuration can pass through setting
It is easily realized to the damper chamber in pump case, wherein taken in this way as arrangement about the connector that becomes a mandarin is as embodied
To so that diaphragm is arranged along pulse propagation direction and is not arranged transverse to pulse propagation direction as so far.By
This reduction is applied to the load on diaphragm.The service life for the diaphragm installed in this way is which thereby enhanced, thus also improves or extends
The service intervals of the service life of high-pressure pump high-pressure pump in other words.
In another configuration of the present invention, damper chamber is arranged in driving mechanism room and push rod chamber below pump barrel head is attached
Socket part is in other words between push rod chamber.It is directly damped as a result, in two main pulse sources caused by high-pressure pump.In addition, resistance
Buddhist nun's device chamber is directly next to connector and the backflow fittings of becoming a mandarin.This is become a mandarin and is flowed back in the damping side for bringing pulse therein into fluid
Play positive influences in face.
In another configuration of the present invention, at least one diaphragm can be placed in dia-phragm holder, which keeps
Part can be encased in damper chamber.This is preferred configurations, makes it possible to glibly assemble at least one diaphragm
In damper chamber.Herein it is possible that being mounted on high-pressure pump always to the diaphragm that different applications is configured differently
In the damper chamber constructed in the same manner.
In another configuration of the present invention, damper chamber has the fitting opening that can be covered by chamber lid.Fitting opening is arranged
On high-pressure pump so that reach damper chamber in the case where high-pressure pump is equipped with add-on parts completely.It thus can be not
Damper chamber is reached in the case of dismantling high-pressure pump.Chamber lid can be twisted for example in the case where being packed into sealing ring with screw with pump case
Tightly.
The present invention another advantageous configuration in, driving mechanism room connect with damper chamber and they two via connect lead to
Road is connect with the push rod chamber below pump barrel head.The configuration can be advantageously carried out in design and fabrication technology and provide in addition
Following advantages：It is connected directly between the upper pressure oscillation pressure pulse in other words realized in fluid to be conveyed each other by parts
Damping in terms of the advantages of.
In another configuration of the present invention, the high-pressure pump for being configured to high-pressure fuel pump is the fuel injection system of internal combustion engine
A part, wherein the fuel injection system is for example designed as common rail fuel injection system and is configured to fuel, such as bavin
Oil fuel or gasoline are ejected into the combustion chamber of internal combustion engine.
Description of the drawings
Other advantageous configurations of the present invention can be obtained from attached drawing description, and detailed description of the present invention exists in attached drawing description
Embodiment shown in the accompanying drawings.
Attached drawing is shown:
The total view of solid of high-pressure pump constructed according to the invention Fig. 1,
The cross section of the high-pressure pump of Fig. 2 Fig. 1,
The longitudinal section of the high-pressure pump constructed according to the invention of Fig. 3 Fig. 1,
Fig. 4 has the exploded view of the parts of fluid damping device similar to the stereogram of the high-pressure pump of Fig. 1,
The sectional view of the pump case of the high-pressure pump of Fig. 5 Fig. 1,
The diagram for the pressure-loaded of Fig. 6 a diaphragms used in practice so far, and
The pressure-loaded of Fig. 6 b diaphragms realized by configuration according to the present invention.
Specific implementation mode
Fig. 1 shows the stereogram of high-pressure pump, which is configured to the high-pressure fuel pump 1 of fuel injection system.Fuel sprays
System is penetrated on internal combustion engine, also, high-pressure fuel pump is with for example until the discharge pressure of 3000bar will be by fuel low pressure system
The fuel of system supply is transported to the high pressure accumulator being connect via pressure duct with high-pressure fuel pump 1, and fuel injector is from the height
Pressure memory extracts fuel stored therein, for being controllably ejected into the respective combustion chamber of internal combustion engine.The fuel
E.g. diesel fuel, and the internal combustion engine is self triggering internal combustion engine.
High-pressure fuel pump has pump case 2, and the pump barrel head with pump barrel 3 (referring also to Fig. 2) is equipped in the pump case
4.Pump barrel head 4 has high pressure connection 5, for being connect with pressure duct.It electrically-energized can be aspirated in addition, being packed into pump barrel head 4
Valve 6 is later described in detail suction valve referring also to Fig. 2.Suction valve 6 has connection plug 7, for being filled with electronic control
Set electrical connection.
Being provided in pump case 2 can be by the driving mechanism room 8 that Fig. 2 sees, the camshaft 10 with dual cam 9 can revolve
It is supported in the driving mechanism room 8 with turning.In order to which camshaft 10 to be encased in pump case 2, driving mechanism room 8 is by pump case lid
11 close relative to ambient enviroment, and the driving cone 12 of camshaft 10 passes through pump case lid 11 to stretch out.It is for example anti-on driving cone 12
It is set with driving gear with turning round, which is placed in rotary motion when interior combustion engine is run by the drive shaft of such as internal combustion engine
In.Pump case 2 has become a mandarin connector 13 and backflow fittings 14 in addition.Connector 13 become a mandarin for example via measuring body become a mandarin hose and combustion
Expect low-pressure system connection, and backflow fittings 14 are for example connect with fuel tank via return hose.Especially in 13 He of connector that becomes a mandarin
By the side of backflow fittings 14, chamber lid 15 is for example tightened by three screws 17 in the case where being packed into sealing ring 16 (Fig. 2).Chamber lid
15 close the fitting opening 18 that equally can also explain later of damper chamber 19.
Fig. 2 shows the longitudinal sections of the high-pressure fuel pump 1 of Fig. 1, wherein by the diagram it can be seen that the pump barrel of pump barrel head 4
3 extend into the push rod chamber 20 in pump case 2.Roller tappet 21 is placed in the push rod chamber 20 in cylindricality constructed, in camshaft
When 10 rotary motion, the roller tappet with work roller 22 camshaft 10 the dual cam 9 being arranged in driving mechanism room 8
Upper rolling, to which roller tappet 21 translationally moves up and down in push rod chamber 20.In order to roller tappet 21 and work roller 22 with
The dual cam 9 of camshaft 10 is in continuous contact, and push rod spring 23 is disposed in push rod chamber 20, which sandwiches
In pump barrel head 4 and between keeping disk 24, which is arranged in roller tappet 21.Disk 24 is kept to be seated in roller tappet 21
Pump push rod 26 is kept in annular contact surface 25 and simultaneously to be kept against the work roller of roller tappet 21 with pump push rod footing 28
Part 29, the pump push rod can the translational motions in the pump barrel guide portion 27 being arranged in pump barrel 3.
The connector 13 (referring also to Fig. 3) that becomes a mandarin is connect via inflow channel 30 (referring also to Fig. 5) with driving mechanism room 8.Driving
Mechanism chamber 8 itself is connect with damper chamber 19 and driving mechanism room 8 and damper chamber 19 are via interface channel 31a, 31b with pumping
The push rod chamber 20 of 4 lower section of cylinder head connects.There is interface channel 31a continuation 32 (Fig. 2), the continuation 32 to lead to pump case 2
In contact surface 33 for resting against pump barrel head 4.Continuation 32 continues in service duct 34, and pump barrel head is arrived in the setting of service duct 34
It is in connection in 4 and with solenoid-operated suction valve 6.Solenoid-operated suction valve 6 have by the suction valve 6 manipulate into
Enter valve 35, service duct 34 is connect by this with pump working chamber 36 in an open state into valve, which guides in pump barrel
Portion 27 is arranged in the extension above pump push rod 26 in pump barrel head 4.As a result, in the case where entering the opening of valve 35,
When 26 descending motion of pump push rod, it is directed in pump working chamber 36 via the fuel for the supply of connector 13 that becomes a mandarin, and in pump push rod 26
Then when ascending motion, in the case where entering the opening of valve 35, fuel returns to fuel low pressure on identical route by exclusion
In system.If the handoff procedure by solenoid-operated suction valve 6 will be closed into valve 35, established in pump working chamber 36
The pressure and fuel in the pump working chamber 36 is transported to via check-valves 37 in high pressure connection 5.In addition, being shown in FIG. 5
Return flow line 43, the return flow line connect with backflow fittings 14 and are for example used by being arranged in pump case 2 and pump case lid 11
In bearer cams axis 10 bearing by order to it is cooling and lubricate and the fuel guiding that is directed across return to low-pressure system or
It says in fuel tank.
Due to high-pressure fuel pump 1 aforementioned conventional func and also by fuel low-pressure system cause ground, in high-pressure fuel pump 1
It is middle to form pressure pulse to be damped.For this purpose, be provided with fluid damping device in damper chamber 19, later in reference to Fig. 2,3
Fluid damping device is explained with 4.In the illustrated embodiment, there are two diaphragm 38a, 38b, the two films for fluid damping device tool
Piece is placed to the diaphragm for being preferably configured as sheet metal bending part in the case where being packed into such as diaphragm spring 39 made of spring steel
In holder 40.Dia-phragm holder 40 preassembled in this way imported into the neutralization of damper chamber 19 via fitting opening 18 by Fig. 4 and connects
It and tightens in the case where being packed into sealing ring 16 chamber lid 15 with pump case 2 by screw 17.Diaphragm 38a, 38b annular are in other words
Construct to cylindricality and have built-in diaphragm chamber 41, the diaphragm chamber with medium, for example compressible gas charge.If power is distinguished
It acts on two opposite annular end faces 42 of two diaphragms 38a, 38b, then two end faces 42 become inward towards diaphragm chamber 41
Shape.The effect is used to damp the pressure oscillation occupied in high-pressure fuel pump 1 pressure pulse in other words.Pass through diaphragm 38a, 38b
Aforementioned loading and fuel supplied by inflow channel 30 below diaphragm 38a, 38b, these diaphragms as shown in figure 6b
As (be parallel to end face 42) along longitudinal direction with pressure-loaded and and not as good as in traditional diaphragm as reflected in Fig. 6 a that
Sample is transversely with pressure-loaded (on the front of end face 42).
Claims (11)
1. a kind of high-pressure pump has pump case (2), the pump barrel head (4) with pump barrel (3) is disposed in the pump case, wherein
Pump push rod (26), the pump push rod and pump working chamber (36) and arrangement are disposed in the pump barrel guide portion (27) of the pump barrel (3)
Driving mechanism room (8) collective effect in the pump case (2), and wherein, the pump working chamber (36) can be via energy electricity
The suction valve (6) that magnetic manipulates is fluidly connected with the driving mechanism room (8), also, the high-pressure pump has fluid damper,
It is characterized in that, the fluid damper is placed in damper chamber (19), in damper chamber setting to the pump case (2).
2. high-pressure pump according to claim 1,
It is characterized in that, the fluid damper is at least one diaphragm (38a, 38b).
3. high-pressure pump according to claim 2,
It is characterized in that, the diaphragm (38a, 38b) has the inner membrance piece chamber (41) filled with medium.
4. high-pressure pump according to claim 2 or 3,
It is characterized in that, the diaphragm (38a, 38b) passes through the Fluid pressure that is occupied in the damper chamber (19) in both sides
By pressure-loaded.
5. high-pressure pump according to claim 4,
It is characterized in that, the diaphragm (38a, 38b) is parallel to the opposite end face 42 of the diaphragm) by pressure-loaded.
6. the high-pressure pump according to one of claim 2 to 5,
It is characterized in that, waiting for that the connector that becomes a mandarin (13) of the medium conveyed from the high-pressure pump leads to the driving mechanism for supplying
In room (8) and the damper chamber (19), the damper chamber is transitioned into the driving mechanism room.
7. the high-pressure pump according to one of claim 2 to 6,
It is characterized in that, at least two diaphragms (38a, 38b) are placed in parallel to each other in the damper chamber (19).
8. the high-pressure pump according to one of claim 2 to 7, which is characterized in that the diaphragm (38a, 38b) is placed to diaphragm
In holder (40), the dia-phragm holder can be placed in the damper chamber (19).
9. the high-pressure pump according to one of preceding claims,
It is characterized in that, have can be by fitting opening (18) that chamber lid (15) cover for the damper chamber (19).
10. the high-pressure pump according to one of preceding claims, which is characterized in that the driving mechanism room (8) and the resistance
Buddhist nun's device chamber (19) connects, also, the driving mechanism room and the damper chamber via interface channel (31a, 31b) with described
Push rod chamber (20) connection below pump barrel head (4).
11. a kind of fuel injection system has the high-pressure pump for being configured to high-pressure fuel pump (1), which is according to aforementioned power
High-pressure pump described in one of profit requirement.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016204128.2 | 2016-03-14 | ||
| DE102016204128.2A DE102016204128A1 (en) | 2016-03-14 | 2016-03-14 | high pressure pump |
| PCT/EP2017/051651 WO2017157554A1 (en) | 2016-03-14 | 2017-01-26 | High-pressure pump having a fluid damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108779766A true CN108779766A (en) | 2018-11-09 |
| CN108779766B CN108779766B (en) | 2020-07-17 |
Family
ID=57890837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780017487.6A Active CN108779766B (en) | 2016-03-14 | 2017-01-26 | High pressure pump with fluid damper |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3430261B1 (en) |
| KR (1) | KR20180121982A (en) |
| CN (1) | CN108779766B (en) |
| DE (1) | DE102016204128A1 (en) |
| WO (1) | WO2017157554A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017213891B3 (en) | 2017-08-09 | 2019-02-14 | Continental Automotive Gmbh | High-pressure fuel pump for a fuel injection system |
| DE102018001129A1 (en) | 2018-02-12 | 2019-08-14 | Daimler Ag | High-pressure fuel pump for an internal combustion engine of a motor vehicle, in particular of a motor vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135283A (en) * | 2006-08-31 | 2008-03-05 | 株式会社日立制作所 | High-pressure fuel supply pump |
| CN102102612A (en) * | 2009-12-21 | 2011-06-22 | 株式会社电装 | Constant residual pressure valve |
| CN103597199A (en) * | 2010-10-06 | 2014-02-19 | 斯塔纳迪恩公司 | Three element diaphragm damper for fuel pump |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW384358B (en) * | 1997-09-25 | 2000-03-11 | Mitsubishi Electric Corp | High pressure fuel supply pump body for an in-cylinder fuel injection engine |
| EP1411236B1 (en) * | 2002-10-19 | 2012-10-10 | Robert Bosch Gmbh | Device for damping of pressure pulsations in a fluid system, especially in a fuel system of an internal combustion engine |
| JP5628121B2 (en) * | 2011-09-20 | 2014-11-19 | 日立オートモティブシステムズ株式会社 | High pressure fuel supply pump |
| DE102013207393A1 (en) | 2013-04-24 | 2014-10-30 | Robert Bosch Gmbh | Piston pump, in particular high-pressure pump for a fuel system for an internal combustion engine |
-
2016
- 2016-03-14 DE DE102016204128.2A patent/DE102016204128A1/en not_active Withdrawn
-
2017
- 2017-01-26 WO PCT/EP2017/051651 patent/WO2017157554A1/en unknown
- 2017-01-26 EP EP17701506.2A patent/EP3430261B1/en active Active
- 2017-01-26 KR KR1020187029149A patent/KR20180121982A/en not_active Application Discontinuation
- 2017-01-26 CN CN201780017487.6A patent/CN108779766B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135283A (en) * | 2006-08-31 | 2008-03-05 | 株式会社日立制作所 | High-pressure fuel supply pump |
| CN102102612A (en) * | 2009-12-21 | 2011-06-22 | 株式会社电装 | Constant residual pressure valve |
| CN103597199A (en) * | 2010-10-06 | 2014-02-19 | 斯塔纳迪恩公司 | Three element diaphragm damper for fuel pump |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3430261A1 (en) | 2019-01-23 |
| KR20180121982A (en) | 2018-11-09 |
| EP3430261B1 (en) | 2022-01-26 |
| WO2017157554A1 (en) | 2017-09-21 |
| CN108779766B (en) | 2020-07-17 |
| DE102016204128A1 (en) | 2017-09-14 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |