CN108223353A - Piston pump, particularly for the high-pressure fuel pump of internal combustion engine - Google Patents
Piston pump, particularly for the high-pressure fuel pump of internal combustion engine Download PDFInfo
- Publication number
- CN108223353A CN108223353A CN201711391027.8A CN201711391027A CN108223353A CN 108223353 A CN108223353 A CN 108223353A CN 201711391027 A CN201711391027 A CN 201711391027A CN 108223353 A CN108223353 A CN 108223353A
- Authority
- CN
- China
- Prior art keywords
- pump
- piston
- sealing ring
- pressure sealing
- piston pump
- 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.)
- Pending
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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0448—Sealing means, e.g. for shafts or housings
-
- 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
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/442—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means preventing fuel leakage around pump plunger, e.g. fluid barriers
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0408—Pistons
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0421—Cylinders
-
- 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
- F04B53/02—Packing the free space between cylinders and pistons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Details Of Reciprocating Pumps (AREA)
- Fuel-Injection Apparatus (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
Abstract
The present invention relates to a kind of piston pump (16), particularly for the high-pressure fuel pump of internal combustion engine, including pump case (26), pump piston (28) and one at least also by the conveying chamber (38) of pump case (26) and pump piston (28) gauge.The present invention refers to, there are one relative to the static high-pressure sealing ring (44) of pump case (26), the high-pressure sealing ring is arranged between pump piston (28) and pump case (26) and seals conveying chamber (38) piston pump (16) tool.
Description
Technical field
The present invention relates to a kind of piston pump, in particular for the high-pressure fuel pump of internal combustion engine.
Background technology
10 2,013 226 088 A1 of DE disclose a kind of such piston pump.The piston pump belongs to the fuel system of internal combustion engine
It unites and for fuel to be transported in fuel rail under high pressure.The pump piston being axially movable is set thus in conveying chamber
Middle compressed fuel.Known piston pump have bearing and seal assembly, it is described bearing and seal assembly make conveying chamber seal and
It is fixedly connected with pump piston.
Invention content
The task of the present invention is a kind of piston pump is provided, the piston pump is cheap, has high service life and can
Efficiently to run.
The task is solved by piston pump according to the present invention.The present invention also proposes advantageous extended mode.It is in addition, right
The important feature of the present invention can be below explanation and attached drawing in find.Here, the feature is not only in itself but also different
The present invention can be important in combination.
Piston pump according to the present invention has pump case, pump piston and at least also by pump case and by the defeated of pump piston gauge
Send room.It is referred to according to the present invention, piston pump has relative to the static high-pressure sealing ring of pump case, which is arranged in
Between pump piston and pump case and seal conveying chamber.Therefore, different from the prior art, high-pressure sealing ring not with piston one
Movement is played, but it is static relative to pump case so that pump piston is moved relative to high-pressure sealing ring.
Such high-pressure sealing ring can be manufactured particularly simple, thus reduce component cost.This especially because：It can
Cancel the mechanical processing of high-pressure sealing ring.In the case of preferably, high-pressure sealing ring can be used as sealing ring to implement, the sealing ring
Freely deviate from after the fabrication by injection molding machine.Such high-pressure sealing ring can also be installed simply.It finally reduces in operation
The quality to be moved, thus just enough, when using in motor vehicle driven by the internal combustion engine, this subtracts smaller driving power again
Few hazardous emission and fuel consumption.
One extended mode is characterized in that, the circumferential surface of pump piston at least rubs small in the region contacted with high-pressure sealing ring
Ground and/or reduce abrasively coated.Different from the inner peripheral surface of such as piston bushing, the peripheral surface of pump piston can be very simple
Ground coated.It is possible thereby to significantly reduce the friction between pump piston and high-pressure sealing ring, this significantly reduce abrasional behavior and
Also reduce the wear volume of the high-pressure sealing ring used.In practice, by the solid friction of reduction, abrasional behavior can be compared
Compared with non-coating pump piston with until coefficient 10 improve.Thus also reduce in the running leakage of piston pump, thus improve again
Hydraulic efficiency.
It is advantageous that coating includes harder carbon and/or by physical vapour deposition (PVD) (PVD) or chemical vapor deposition
Product (CVD) applies.The hard and smooth table of pump piston circumferential surface is more specifically realized by common coating process as a result,
Face, it is thus cost-effective.
It is also proposed that the circumferential surface of pump piston is ground.This ensures high dimensional stability and very smooth surface, the surface
It is leaked less with high-pressure sealing ring and abrasion low land works together.
The present invention is particularly advantageous in situations below：Piston pump according to the present invention does not have piston bushing.That is, sealing is straight
It is connected between pump piston and pump case and carries out.Thus it is cost-effective, and piston pump can construct smaller.
Further according to the present invention, piston pump has supporting arrangement, which can axis relative to pump case by pump piston
To movably supporting.It therefore ensures that and reliably receives cross force and torque, thus make high-pressure sealing ring unloading and improve
It leaks behavior.Thus the abrasion on high-pressure sealing ring is also reduced.
Supporting arrangement and high-pressure sealing ring can be integrated.This simplifies installation.
However, instead of this it is also possible that supporting arrangement include at least one component independently of high-pressure sealing ring, and
And preferably, supporting arrangement and high-pressure sealing ring are by different material manufactures, especially the thermoplasticity PEEK plastics variants by being molded
Manufacture.This can be on the one hand supporting arrangement and is on the other hand that high-pressure sealing ring uses corresponding best material.
Also it refers to, piston pump has the holding element of preferably sleeve shaped, is seen by high-pressure sealing ring, the holding element is in height
Laminate seal is fixed on the side of conveying chamber in pump case, and the holding element is square in an axial direction by high-pressure sealing ring
To fixation.This can be realized simply axially fixes high-pressure sealing ring in pump case.
Another advantageous configuration of piston pump according to the present invention is characterized in that high-pressure sealing ring, which has, to be radially positioned at
Internal sealing lip, the sealing lip dynamically with pump piston collective effect, and preferably have be radially positioned at it is external
Sealing lip, the sealing lip statically with pump case collective effect.This is radially positioned at external sealing lip relative to pump case not
Movement so that do not wear.Internal sealing lip is only radially positioned at since pump piston is relative to the opposite of high-pressure sealing ring
Movement and through frayed, but when the circumferential surface of pump piston correspondingly processes (such as be ground and/or coating), the abrasion is especially very
It is small.In order to ensure function of the piston pump during its service life, it is advantageously provided one side high-pressure sealing ring herein and pump is lived
Preload between plug and between another aspect high-pressure sealing ring and pump case.Be radially positioned at internal sealing lip radially to
Interior preload, and be radially positioned at external sealing lip and radially outward pre-tighten.
Description of the drawings
The feasible embodiment of the present invention is described with reference to the drawings later.It is shown in the drawings：
Fig. 1 has the schematical diagram of the fuel system of the high-pressure fuel pump in piston pump form；
The longitudinal section of the piston pump of Fig. 2 Fig. 1；
The enlarged view of the pump piston of the piston pump of Fig. 3 Fig. 1, pump case and high-pressure sealing ring；With
The view being further amplified of the pump piston of the piston pump of Fig. 4 Fig. 1, pump case and high-pressure sealing ring.
Specific embodiment
The fuel system of internal combustion engine carries reference numeral 10 on the whole in Fig. 1.The fuel system is held including fuel
Device 12, electricity send on pump 14 and fuel are transported to the high-pressure fuel pump for being configured to piston pump 16 by the fuel container.The fuel high pressure
Fuel is further conveyed to fuel high pressure rail 18 by pump, and multiple fuel injectors 20 are connected on the fuel high pressure rail, described
Fuel injector is injected fuel into the combustion chamber being not shown of internal combustion engine.
Piston pump 16 includes entering valve 22, dump valve 24 and pump case 26.Pump piston 28 is reciprocally received in
In the pump case.Pump piston 28 is placed in by driving device 30 in movement, wherein, driving device 30 is in Fig. 1 only symbolically
It shows.The driving device 30 can for example be related to camshaft or eccentric shaft.Control valve is configured into valve 22, passes through the amount control
Valve processed can adjust the fuel quantity conveyed by piston pump 16.
The more detailed general structure of piston pump 16 is obtained by Fig. 2, wherein, important parts are only referred to later.It is first
First find out, pump piston 28 is configured to step piston, has the push rod section 32 below Fig. 2, is connected to leading on the push rod section
The end section 36 positioned at end side above section 34 and Fig. 2.The guide section 34 has than push rod section 32 and end region
36 big diameters of section.
The end section 36 and guide section 34 and pump case 26 together gauge conveying chamber 38 of pump piston 28, in fig. 2
Arrangement enters valve 22 and arranges dump valve 24 on the right side of conveying chamber in fig. 2 on the left of conveying chamber.Pump case 26 is to revolve completely
Turn symmetrical component, the pressure vibration dampener 40 that only partially shows be disposed on the end side above Fig. 2 in the pump case,
The pressure pulse being present in the area of low pressure into 22 upstream of valve should be made to decay by the pressure vibration dampener.
Pump piston 28 is received in pump case 26 in stair-stepping blind hole 42 there be.The blind hole
End section above Fig. 2 forms gauge of the pump case 26 to conveying chamber 38.In the guide section 34 of pump piston 28 and blind hole 42
Internal perisporium between arrange high-pressure sealing ring 44.The high-pressure sealing ring carries out close directly between pump piston 28 and pump case 26
Envelope, and thereby make conveying chamber 38 relative to the regional seal for being directly arranged at 44 lower section of high-pressure sealing ring in fig. 2, region category
In above-mentioned area of low pressure.The piston bushing that pump piston 28 is slidably oriented to and seals wherein is significantly not present.High-pressure sealing ring
44 detailed configuration can also be explained in more detail below.
In addition, piston pump 16 has the holding element 46 of sleeve shaped, which is pressed into blind hole 42.By high pressure
Sealing element 44 sees that the holding element 46 is fixed on pump case away from the side of conveying chamber 38 high-pressure sealing ring 44 by being pressed into
In body 26.By the holding element 46, high-pressure sealing ring 44 is in axial direction fixed.In addition, in fig. 2 under holding element 46
Side, the sealing element holder 48 of similary sleeve shaped are pressed into pump case 26.The sealing element holder keeps the low pressure of annular
Sealing element 50, the low pressure seal are dynamically sealed relative to the push rod section 32 of pump piston 28.It is low by low pressure seal 50
Intermediate pressure section is sealed relative to external environment relative to driving device 30 in other words.
As understood as Fig. 3 and 4, the peripheral surface of the guide section 34 of pump piston 28 is equipped with stone and is scheming
In the carbon coating 52 that represents by a dotted line.The carbon coating 52 is current to be applied by physical vapour deposition (PVD) (PVD).Alternatively, institute
Stating carbon coating can also be applied by chemical vapor deposition (CVD).Leading for pump piston 28 has been ground before carbon coating 52 is applied
To the peripheral surface of section 34.In this way realize pump piston 28 guide section 34 peripheral surface on it is extremely smooth, rub
Wipe small and wear-resistant surface.
As described above, currently without the piston bushing set for supporting pump piston 28.Replacing, there are supporting arrangements
54, it is in the annular with the substantially cross section of square or rectangle, the supporting arrangement is similar to 44 ground of high-pressure sealing ring
It is arranged between the inner radial wall of the guide section 34 of pump piston 28 and the blind hole 42 of pump case 26.It is outstanding by the supporting arrangement 54
It receives the cross force being for example applied to by driving device 30 on pump piston 28, also, by the supporting arrangement, relative to pump case
Body 26 supports pump piston 28.
Supporting arrangement 54 integrally constructs in the embodiment shown in present Figure with high-pressure sealing ring 44.However,
In the embodiment being not shown, supporting arrangement and high-pressure sealing ring are configured to mutually independent component.Not only high-pressure sealing ring
44 and supporting arrangement 54 for example can be by the thermoplastic PEEK plastic manufacturings that are molded.
High-pressure sealing ring 44 includes base section 56, and supporting arrangement 54 is molded on the base section.In being radially positioned at
The annular seal lip 58 in portion is upwardly extended from the base section 56 in figure, i.e., extends towards conveying chamber 38, which is responsible for moving
The sealing of state, because of 34 collective effect of guide section of the sealing lip and the pump piston 28 of movement.Guide section 34 is in certain journey
It is the region that pump piston 28 is contacted with high-pressure sealing ring 44 on degree.In order to ensure reliable during the service life of piston pump 16
Sealing, sealing lip 58 radially-inwardly pre-tighten.
It is upwardly extended in figure from base section 56 in addition, being radially positioned at external annular seal lip 60, i.e., again towards defeated
Room 38 is sent to extend, which is responsible for static sealing because the sealing lip with relative to the static pump case of high-pressure sealing ring 44
Body 26, more specifically with the inner wall collective effect of blind hole 42.Herein, sealing lip 60 also radially outward pre-tightens, to ensure
Reliable sealing during the service life of piston pump 16.Especially it can be seen from Fig. 4 that being radially positioned at internal sealing lip 58 from base
Plinth section 56 sets out has smaller axially extending scale compared with being radially positioned at external sealing lip 60.In addition, especially by
Fig. 4 finds out that the external sealing lip 60 that is radially positioned at of high-pressure sealing ring 44 is kept element 46 against stair-stepping blind hole 42
Convex shoulder 62 load.
By using high-pressure sealing ring 44 stated above, with reference to coating 52, reduce on high-pressure sealing ring, especially on edge
It is radially disposed on internal annular seal lip 58 and the abrasion on the circumferential surface of pump piston 28.Furthermore, it is possible to it uses on the whole
The relatively strong component with high service life.Finally, not only high-pressure sealing ring 44 but also supporting arrangement 54 can serve as
Plastic injection piece manufacture at low cost.
Claims (10)
1. a kind of piston pump (16), in particular for the high-pressure fuel pump of internal combustion engine, which there is pump case (26), pump to live
Fill in (28) and at least also by the conveying chamber (38) of the pump case (26) and the pump piston (28) gauge, which is characterized in that
The piston pump has relative to the static high-pressure sealing ring (44) of the pump case (26), and the high-pressure sealing ring is arranged in pump
Between piston (28) and pump case (26) and seal the conveying chamber (38).
2. piston pump (16) described in accordance with the claim 1, which is characterized in that the circumferential surface of the pump piston (28) at least with institute
State the small ground of friction in the region (34) of high-pressure sealing ring (44) contact and/or reduction abrasively coated.
3. piston pump (16) described in accordance with the claim 2, which is characterized in that the coating (52) including harder carbon and/
Or the coating applies by physical vapour deposition (PVD) (PVD) or chemical vapor deposition (CVD).
4. according to the piston pump (16) described in any one of preceding claims, which is characterized in that the week of the pump piston (28)
Face is ground.
5. according to the piston pump (16) described in any one of preceding claims, which is characterized in that the piston pump does not have piston
Bushing.
6. according to the piston pump (16) described in any one of preceding claims, which is characterized in that the piston pump has bearing
Device (54), the supporting arrangement is by the pump piston (28) in a manner of it can be moved axially relative to the pump case (26)
Bearing.
7. according to the piston pump (16) described in claim 6, which is characterized in that the supporting arrangement (54) and the high pressure sealing
Part (44) is integrated.
8. according to the piston pump (16) described in claim 6, which is characterized in that the supporting arrangement (54) is including at least one only
The component of the high-pressure sealing ring (44) is stood on, and preferably, the supporting arrangement (54) and the high-pressure sealing ring (44)
By different material manufactures, especially manufactured by the thermoplasticity PEEK plastics variant being molded.
9. according to the piston pump (16) described in any one of preceding claims, which is characterized in that the piston pump has preferred
The holding element (46) of ground sleeve shaped sees that the holding element is in the high-pressure sealing ring by the high-pressure sealing ring (44)
(44) be fixed on the side of the conveying chamber (38) in the pump case (26) and the holding element will described in
High-pressure sealing ring (44) is in axial direction fixed.
10. according to the piston pump (16) described in any one of preceding claims, which is characterized in that the high-pressure sealing ring (44)
Have
It is radially positioned at internal sealing lip (58), the sealing lip is and excellent dynamically with the pump piston (28) collective effect
Selection of land has
Be radially positioned at external sealing lip (60), the sealing lip statically with the pump case (26) collective effect.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016225922.9A DE102016225922A1 (en) | 2016-12-21 | 2016-12-21 | Piston pump, in particular high-pressure fuel pump for an internal combustion engine |
| DE102016225922.9 | 2016-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108223353A true CN108223353A (en) | 2018-06-29 |
Family
ID=62251771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711391027.8A Pending CN108223353A (en) | 2016-12-21 | 2017-12-21 | Piston pump, particularly for the high-pressure fuel pump of internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20180072576A (en) |
| CN (1) | CN108223353A (en) |
| DE (1) | DE102016225922A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117677547A (en) * | 2021-08-05 | 2024-03-08 | 特瑞堡密封系统德国有限公司 | Transmitter piston, hydraulic vehicle brake and method for producing a transmitter piston |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020214037A1 (en) * | 2020-04-03 | 2021-10-07 | Robert Bosch Gesellschaft mit beschränkter Haftung | High pressure fuel pump |
| DE102020215411A1 (en) * | 2020-12-07 | 2022-06-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | Piston pump, in particular high-pressure fuel pump for an internal combustion engine |
| DE102020215512A1 (en) * | 2020-12-09 | 2022-06-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | High-pressure fuel pump for an internal combustion engine |
| CN114087171A (en) * | 2021-10-15 | 2022-02-25 | 合肥新沪屏蔽泵有限公司 | Pump assembly |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07269443A (en) * | 1994-03-29 | 1995-10-17 | Yamaha Motor Co Ltd | High pressure fuel pump |
| CN2929256Y (en) * | 2006-07-20 | 2007-08-01 | 物理农林机械科技(苏州)有限公司 | High pressure plunger pump |
| CN101678375A (en) * | 2007-05-23 | 2010-03-24 | 杜尔系统有限责任公司 | The piston rod seal that is used for the insulating cylinder of coating apparatus |
| KR20120120870A (en) * | 2011-04-25 | 2012-11-02 | 최인수 | The plunger seal of plunger pump for high pressure homogenizer |
| CN203948281U (en) * | 2014-06-30 | 2014-11-19 | 三一汽车制造有限公司 | A kind of concrete piston sealing body and concrete pump |
| DE102013224832A1 (en) * | 2013-12-04 | 2015-06-11 | Robert Bosch Gmbh | Sealing device, piston pump |
| DE102015202632A1 (en) * | 2015-02-13 | 2016-08-18 | Robert Bosch Gmbh | High pressure pump for a fuel injection system |
| CN107002616A (en) * | 2014-12-09 | 2017-08-01 | 罗伯特·博世有限公司 | High-pressure fuel pump with piston |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2935859B1 (en) | 2012-12-20 | 2016-12-21 | Robert Bosch GmbH | Piston fuel pump for an internal combustion engine |
-
2016
- 2016-12-21 DE DE102016225922.9A patent/DE102016225922A1/en not_active Withdrawn
-
2017
- 2017-12-20 KR KR1020170176153A patent/KR20180072576A/en not_active Application Discontinuation
- 2017-12-21 CN CN201711391027.8A patent/CN108223353A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07269443A (en) * | 1994-03-29 | 1995-10-17 | Yamaha Motor Co Ltd | High pressure fuel pump |
| CN2929256Y (en) * | 2006-07-20 | 2007-08-01 | 物理农林机械科技(苏州)有限公司 | High pressure plunger pump |
| CN101678375A (en) * | 2007-05-23 | 2010-03-24 | 杜尔系统有限责任公司 | The piston rod seal that is used for the insulating cylinder of coating apparatus |
| KR20120120870A (en) * | 2011-04-25 | 2012-11-02 | 최인수 | The plunger seal of plunger pump for high pressure homogenizer |
| DE102013224832A1 (en) * | 2013-12-04 | 2015-06-11 | Robert Bosch Gmbh | Sealing device, piston pump |
| CN203948281U (en) * | 2014-06-30 | 2014-11-19 | 三一汽车制造有限公司 | A kind of concrete piston sealing body and concrete pump |
| CN107002616A (en) * | 2014-12-09 | 2017-08-01 | 罗伯特·博世有限公司 | High-pressure fuel pump with piston |
| DE102015202632A1 (en) * | 2015-02-13 | 2016-08-18 | Robert Bosch Gmbh | High pressure pump for a fuel injection system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117677547A (en) * | 2021-08-05 | 2024-03-08 | 特瑞堡密封系统德国有限公司 | Transmitter piston, hydraulic vehicle brake and method for producing a transmitter piston |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20180072576A (en) | 2018-06-29 |
| DE102016225922A1 (en) | 2018-06-21 |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180629 |
|
| WD01 | Invention patent application deemed withdrawn after publication |