CN105464869B - Fuel pump - Google Patents
Fuel pump Download PDFInfo
- Publication number
- CN105464869B CN105464869B CN201510619921.0A CN201510619921A CN105464869B CN 105464869 B CN105464869 B CN 105464869B CN 201510619921 A CN201510619921 A CN 201510619921A CN 105464869 B CN105464869 B CN 105464869B
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- China
- Prior art keywords
- inflow
- slot
- centre
- inflow slot
- fuel pump
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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
- 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
- F04B1/0421—Cylinders
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
Fuel pump, the especially high pressure fuel pump of oil common rail system, it has the pump piston being guided in pumping cylinder, wherein, in pumping cylinder, in the region in gap for wherein guiding pump piston, for for lubricate and when necessary for cooling fuel oil be configured with the top being connected in first pressure level by least one inflow hole inflows slot and by least one tap hole be connected to second pressure it is horizontal on lower section spout, the inflow slot of another centre is wherein configured between inflow slot and the spout of lower section in the region in the gap of pumping cylinder above, the inflow slot is connected in first pressure level by least one inflow hole, wherein, the first guide plate for pump piston is configured between the lower edge of the inflow slot of the top edge and centre of the spout of lower section, and the stream in the top edge of intermediate inflow slot and top Enter the second guide plate being configured between the lower edge of slot for pump piston.
Description
Technical field
The present invention relates to the high pressure fuel pumps of a kind of fuel pump, especially oil common rail system.
Background technique
Fuel pump has pumping cylinder, and wherein pump piston is movably supported or guided in pumping cylinder.Pump piston leads in pumping cylinder
It crosses one or more cams to move up and down, thus fuel oil is sucked and is conveyed to customer by fuel pump, is so for example conveyed to
The injection valve of fuel system.
There are one or more leakage grooves in the region of pumping cylinder from fuel pump known in practice, with export in pumping cylinder and
The leakage fuel oil occurred between pump piston, pump piston are moveably supported in the pumping cylinder.Then particularly, come when with fuel oil
When lubrication and the fuel pump that is cooled down when necessary using fuel oil are used in using fuel system of the heavy oil as fuel oil, due to being used for
Lubrication and when necessary for cool down the heavy oil of fuel pump with it is being used in the region of cam, in pump piston and/or in pumping cylinder
Lubricator work, it is possible to create be known as fouling (Verlackung) deposit, the guidance between pump piston and pumping cylinder
The deposit in region reduces the guide clearance between pump piston and pumping cylinder.Thus it may finally be formed on fuel pump
Piston erosion, so that fuel pump can not rerun.Therefore must avoid as far as possible to a certain extent reduce pump piston with
Such fouling of guide clearance between pumping cylinder.
Leakage grooves of a kind of tool known there are two construction in the region of pumping cylinder from 10 2,007 019 909 A1 of DE
Fuel pump can export the leakage fuel oil occurred between pumping cylinder and pump piston by the leakage grooves, that is, be exported to fuel oil
In system and/or no pressure export in leakage reversed flow portion, will wherein to reduce the fouling on pump piston and/or pumping cylinder
Two leakage grooves are located at the one third of the lower section in the gap of the receiving pump piston of pumping cylinder.
It is known a kind of living with pumping cylinder and the pump being guided in the gap of pumping cylinder from 10 2,006 049 759 A1 of DE
The fuel pump of plug, wherein in order to make fuel oil for lubricating and when necessary for cooling down fuel pump in the sky of the guidance pump piston of pumping cylinder
On the one hand the inflows slot of top and the spout below being on the other hand configured with are configured in the region of gap, wherein in order to lubricate with
Cooling pump piston can provide fuel oil by the inflow slot of top, and can be exported by the spout of lower section for lubricating and
Cooling fuel oil.Here, according to 10 2,006 049 759 A1 of DE, in order to reduce fouling, by opening up the sky in pump piston
Chamber is that slot imports and can be from the cooling pump piston in inside by fuel oil derived from spout by means of flowing into.
Although can have been reduced to a certain extent on pump piston using known fuel pump from the prior art and/or
Fouling on pumping cylinder, but there are still following demands for fuel pump: on the one hand reduce the fouling wind of pump piston and/or pumping cylinder
Danger, and wherein on the other hand guarantee to carry out optimal guidance to the pump piston in the gap of pumping cylinder.
Summary of the invention
Based on this, reducing to form knot in the fuel pump the task of the present invention is a kind of novel fuel pump is provided
The risk of dirt.The present invention proposes a kind of fuel pump thus, has the pump piston being guided in pumping cylinder, wherein in the pump
Cylinder, in the region in gap for wherein guiding the pump piston, for for lubricating and when necessary for cooling fuel oil construction
There is the inflow slot for the top being connected in first pressure level by least one inflow hole and is joined by least one tap hole
It is connected to the spout of the lower section in second pressure level, which is characterized in that in the region in the gap of the pumping cylinder on described
The inflow slot of another centre is configured between inflow slot and the spout of the lower section of side, which is flowed by least one
Enter hole to be connected in first pressure level, wherein in the top edge of the spout of the lower section and the inflow slot of the centre
The first guide plate for the pump piston is configured between lower edge, and in the top edge of the inflow slot of the centre and institute
The second guide plate being configured between the lower edge of the inflow slot of top for the pump piston is stated, wherein the inflow of the centre
Axial direction groove height possessed by slot is greater than the piston stroke of the pump piston, and wherein for the axis for flowing into slot of the centre
Be applicable in for groove height: B > A-C1, wherein A is the piston stroke of the pump piston, and wherein C1 is the stream of the lower section
Axial spacing between the lower edge of the inflow slot of the top edge of slot and the centre out.According to the present invention, in the gap of pumping cylinder
Region in the inflow slot of another centre, the inflow of the centre are configured between inflow slot and the spout of lower section above
Slot is connected in first pressure level by least one inflow hole, wherein in the top edge and centre of the spout of lower section
It flows between the lower edge of slot and is configured with the first guide plate for pump piston, and in the top edge of intermediate inflow slot and upper
The second guide plate for pump piston is configured between the lower edge of the inflow slot of side.A side in fuel pump according to the present invention
Face reduces the fouling risk in the region of pump piston and pumping cylinder, on the other hand ensure that the pump piston inside pumping cylinder into
The optimal guidance of row.
Preferably, the axial groove height B that intermediate inflow slot has is greater than the piston stroke A of pump piston, for centre
Particularly be applicable in for the axial groove height B of inflow slot: B > A-C1, wherein A is the piston stroke of pump piston, and wherein C1 is
Axial spacing between the lower edge of the inflow slot of the top edge and centre of the spout of lower section.In order to reduce fouling risk, in
Between the design scheme of groove height of inflow slot be particularly preferred.
One kind according to the present invention is advantageously improved scheme, in the region in the gap of pumping cylinder under the spout of lower section
Side accommodates scraping element (Abstreifelement) in the slot of pumping cylinder, wherein high for the axial groove of intermediate inflow slot
Particularly be applicable in for degree B: B > A-C1-D, wherein A is the piston stroke of pump piston, and wherein C1 is the top of the spout of lower section
Edge and centre inflow slot lower edge between axial spacing, and wherein D be lower section spout top edge with strike off
Axial spacing between the contact point of element.The groove height permission of intermediate inflow slot reduces fouling wind highly beneficially
Danger.
Preferably, lead to the inflow hole of intermediate inflow slot or lead to each inflow hole of intermediate inflow slot at least partly
Ground has cross section more smaller than each inflow hole of the inflow hole of the inflow slot above leading to or the inflow slot for leading to top, from
And flowing into slot above exists than flowing into feed pressure bigger in slot in intermediate.This is for further decreasing fouling wind
It is advantageous for danger.
Detailed description of the invention
Preferred improvement project of the invention is obtained by following description.The embodiment of the present invention is explained in detail with reference to the accompanying drawings
And it is not limited to this.In the accompanying drawings:
Fig. 1 shows the schematical cross section of fuel pump.
Specific embodiment
The present invention relates to fuel pumps herein, especially the internal combustion engine such as marine diesel oil internal combustion for being run using heavy oil
The high pressure fuel pump of the oil common rail system of machine.
Fig. 1 shows the cross section of fuel pump 10 according to the present invention, and wherein fuel pump 10 has pumping cylinder 11 and in pumping cylinder
The pump piston 13 movably supported in 11 gap 12.Pump piston 13 can move up and down in the gap of pumping cylinder 11 12 or can be past
Multiple movement, i.e., control movement by cam 14.Cam 14 also referred to as drives cam.Pass through pump piston 13 caused by cam 14
Movement reacts on the restoring force as provided by the return spring 15 for being also referred to as driving spring.On the one hand the driving spring 15 props up
It holds on pumping cylinder 11 and another aspect is supported on the supporting member 16 coupled with pump piston 13.
Fuel pump 10 out shown in Fig. 1 is the high pressure fuel pump of oil common rail system, wherein such high-pressure fuel pump
It aspirated from the area of low pressure of oil common rail system, compress fuel oil, and be supplied to the high-pressure area of oil common rail system.Pump piston
13 are used herein to the fuel oil in the gap 12 of compression pumping cylinder 11, wherein compressed in the gap of pumping cylinder 11 12 by pump piston 13
Fuel oil can be conveyed by the pressure hole 32 in pumping cylinder 11 along the direction of the high-pressure area of oil common rail system.
Such fuel pump 10 is lubricated using fuel oil and is cooled down when necessary using fuel oil, so that fuel oil is for lubricating
And when necessary for the cooling pump piston 13 being movably guided in the gap of pumping cylinder 11 12.Then particularly, work as fuel oil
When pump 10 aspirates and compresses the heavy oil as fuel oil, existing risk is: being also used to lubricate the heavy oil of pump piston 13 and in cam
It is being used to lubricate the cam in 14 region and live being diffused into the region around driving spring 15 and then being diffused into pump
Lubricator in the region of the part outstanding of slave pumping cylinder 11 of plug 13 reacts, and intermediate fuel oil and uses in the region of cam 14
The reaction product of lubricator may be deposited in the region of pump piston 13 and/or as pump piston consequently as so-called fouling
The result of 13 stroke motion may be deposited in the region in gap 12 of pumping cylinder 11, and the fouling reduces pump piston 13 and pump
Guide clearance between cylinder 11.Reducing guide clearance may cause the piston erosion of pump piston 13.The present invention relates to now herein
And the details of fuel pump 10, the fouling risk on pump piston 13 and/or pumping cylinder 11 can be reduced by means of the fuel pump, and
It is ensured by means of the fuel pump and optimal guidance is carried out to pumping cylinder 13 in the region in the gap of pumping cylinder 11 12.
As already stated, fuel oil is for lubricating and when necessary for cooling movable in the gap of pumping cylinder 11 12
The pump piston 13 that ground is guided.For for lubricating and when necessary for cooling down pump piston 13 in the region in the gap of pumping cylinder 11 12
Fuel oil be configured with multiple inflow slots 17,18 and a spout 19, i.e. top flows into slot 17, the spout 19 of lower section and fixed
The inflow slot 18 for flowing into the centre between slot 17 and the spout 19 of lower section of position above.Therefore along the axial direction of pump piston 13
In turn along looking in the direction of motion, intermediate inflow slot 18 is located in the spout 19 of the inflow slot 17 and lower section of top in direction
Between.
The inflow slot 17 of top passes through at least one by the inflow slot 18 of the inflow hole 20 above at least one and centre
Intermediate inflow hole 21 is connected in first pressure level, is particularly connected on the area of low pressure of oil common rail system, and under
The spout 19 of side is then connected in second pressure level by least one tap hole 22, is particularly connected to environmental pressure
On.Therefore, pass through inflow hole 20,21 and therefore can be conveyed towards pump piston 13 for lubricating by two inflow slots 17,18
And when necessary for cooling fuel oil, wherein by spout 19 and with the tap hole 22 of 19 mating reaction of spout or with outflow
Each tap hole 22 of 19 mating reaction of slot can will be used to lubricate and be used for cooling fuel oil when necessary and lead from pump piston 13
Out.It is configured between the lower edge 24 of the inflow slot 18 of the top edge 23 and centre of the spout 19 of lower section for pump piston 13
The first guide plate 25, wherein the structure between the lower edge 27 of the inflow slot 17 of the top edge 26 and top of intermediate inflow slot 18
Make another guide plate 28 for pump piston 13.Pass through adjustable two guide plates of groove height B of intermediate inflow slot 18
Axial spacing between 25 and 28.
Preferably, intermediate inflow slot 18 is characterized in that axial groove height B bigger than the piston stroke A of pump piston 13.
Particularly, the adapted relationships formula for the axial groove height B of intermediate inflow slot 18: B > A-C1, wherein A is convex by driving
The piston stroke for the pump piston 13 that wheel 14 determines, and wherein C1 is the inflow of the top edge 23 and centre of the spout 19 of lower section
Axial spacing between the lower edge 24 of slot and be therefore lower section guide plate 25 axial height.
As from Fig. 1 it can be seen that as, in the region in the gap of pumping cylinder 11 12 lower section spout 22 lower section structure
Slot 29 has been made, has accommodated scraping element 30 in the slot 29.It is contained in scraping element 30 in the slot 29 of pumping cylinder 11 preferably
It is to scrape division ring, this is scraped division ring and is sticked on pump piston 31 with certain contact point 31.
Particularly, the adapted relationships formula for the axial groove height B of intermediate inflow slot 18: B > A-C1-D, wherein A be
The piston stroke of pump piston 13, wherein C1 is the top edge 23 of the spout 19 of lower section and the lower edge 24 of intermediate inflow slot 18
Axial spacing, and wherein D be lower section the top edge 23 of spout 19 and the contact point 31 of scraping element 30 between axis
To spacing.
Following situations can be reliably avoided by the above-mentioned design scheme of the axial groove height B of intermediate inflow slot 18:
It will form the fouling for reducing the guide clearance of pump piston 13 in the region of guide plate 28 above, pass through the guidance of the top
Piece separates the inflow slot 17 of top with intermediate inflow slot 18.
As already stated, it is preferably configured to two streams of the fuel pump of the high pressure fuel pump of oil common rail system
Enter the low pressure that slot 17,18 is connected on same stress level by its inflow hole 20,21, is particularly connected to oil common rail system
On the stress level in region, wherein the stress level of area of low pressure is higher than environmental pressure and is adjusted by low-pressure fuel pump.
Due to inside fuel pump the gap of pumping cylinder 11 12, the part and top of fuel oil are compressed by pump piston 13 wherein
It flows into the fuel leakage and the pressure wave that spreads due to the leakage between slot 17 and is depended in inflow slot 17 above
Systematically exist and be higher than in the intermediate pressure flowed into slot 18, thus by guide plate 28 by fuel oil from the inflow slot 17 of top
Start to be transported in intermediate inflow slot 18, the inflow slot 18 for flowing into slot 17 and centre of top is made by the guide plate 28
It separates.
The pressure drop flowed between slot 18 for flowing into slot 17 and centre of top can be improved in the following manner, i.e.,
The inflow hole 20 that the inflow hole 21 for the inflow slot 18 for leading to centre is at least partially the inflow slot 17 than leading to top is smaller
Cross section, that is to say, that the inflow hole 21 for leading to intermediate inflow slot 18 is not throttled.Then it is possible thereby to increase top
The pressure drop of slot 17 and centre flowed between slot 18 is flowed into, and therefore increase will be used to lubricate by the guide plate 28 of top
And be transported to since the inflow slot 17 of top in intermediate inflow slot 18 for cooling fuel oil when necessary, pass through the guidance
Piece 28 separates the inflow slot 17 of intermediate inflow slot 18 and top.
Because being constantly present the pressure in the region less than intermediate inflow slot 18 in the region of the spout 19 of lower section
Level, so by making the region of guide plate 25 that the spout 19 of intermediate inflow slot 18 and lower section separates, lower section total
It is adjustable enough fuel flows.
It can improve in the following manner and be transported to fuel oil since intermediate inflow slot 18 in the spout 19 of lower section,
I.e. as shown in Figure 1, the inflow hole 21 for leading to intermediate inflow slot 18 is imported into the region of the lower section of intermediate inflow slot 18, more
Exactly, it is imported into directly adjacent to one another or with flushing with the guide plate 25 of lower section in intermediate inflow slot 18, the guide plate
25 separate the spout 19 of intermediate inflow slot 18 and lower section.
Due to the above-mentioned design scheme of fuel pump 10 according to the present invention, the region in pump piston 13 and pumping cylinder 11 is reduced
Interior fouling risk.It is always to ensure that due to being formed by pressure drop for lubricating and when necessary for cold by guide plate 25 and 28
But the sufficient fuel oil of fuel oil conveys.It is ensured by the axial groove height B scale cun to intermediate inflow slot 18, although pump
Piston 13 has carried out stroke motion and has used the lubricant in the region of cam 14 that will not reach the inflow slot 17 so that top
In the region of guide plate 28 separated with intermediate inflow slot 18, top.Therefore in the region of guide plate 28 above
There is no fouling risks.The area of guide plate 25 separated in the spout 19 of the guiding groove 18 and lower section that make centre, lower section
In domain, although used lubricant can reach the region of cam 14 in a manner of depending on the stroke motion of pump piston 13
It is interior, but can be passed through in a manner of depending on the high pressure difference between intermediate inflow slot 18 and the spout 19 of lower section
There is so high fuel flow in the guide plate 25 of lower section, the high fuel flow prevents in the region of the guide plate 25 of lower section
Interior formation fouling.
In order to which pump piston 13 ensures length of lead by two guide plates 25,28 along its stroke motion, the guidance is long
Degree further reduced the risk of piston erosion.Length of lead of the pump piston 13 in its stroke motion depends on two guide plates
25,28 spacing and therefore the axial groove depth B depending on intermediate inflow slot 18.
The radial groove depth of intermediate inflow slot 18 can be used for as needed to influence reversed process.Then can
To adjust the inflow among increasing fuel flow when lesser radial groove depth and therefore reducing at intermediate inflow slot 18
Fouling risk in the region of slot 18.It is although improved in the area when the radial groove depth of intermediate inflow slot 18 is larger
Fouling risk, but layer of scale will not be more before the guide clearance in the region for being expected to be obviously reduced intermediate inflow slot 18
It is thick.
Two guide plates 25,28 have relatively short axial length, to reduce fouling risk in the area.Pass through
So that two guide plates 25,28 have relatively short axial length, even if will be on pump piston 13 and/or in guide plate 25,28
The upper operability that fouling occurs and also maintains fuel pump 10, that is because pump piston 13 is on the guide plate 25,28 of facet shape
Adhesive force is smaller than the restoring force of driving spring 15.It is therefore preferable that the face of guide plate 25,28 is so assigned, so that pump piston 13 exists
The adhesive force in face that is on the guide plate 25,28, being formed in fouling and depending on guide plate 25,28 is less than driving spring
15 restoring force.By multiple guide plates 25,28, there are axial spacings to each other, ensure for pump piston 13 biggish
Axially directed length and it is ensured that pump piston carry out it is optimal guidance, particularly compress or convey fuel oil when draw
It leads.In general, using the present invention can with fouling risk, and therefore reduce fuel oil lubrication fuel pump, particularly be used as
Piston on these fuel pumps of the high pressure fuel pump of the oil common rail system of the marine diesel engine run using heavy oil
The risk of corrosion.Therefore in general, have compared to known fuel pump fuel pump according to the present invention from the prior art
Longer service life.
Reference list
10 fuel pumps
11 pumping cylinders
12 gaps
13 pump pistons
14 driving cams
15 driving springs
16 supporting members
17 flow into slot
18 flow into slot
19 spouts
20 inflow holes
21 inflow holes
22 tap holes
23 edges
24 edges
25 guide plates
26 edges
27 edges
28 guide plate, 29 slot
30 scraping elements
31 contact points
32 pressure holes
Claims (10)
1. a kind of fuel pump (10) has the pump piston (13) being guided in pumping cylinder (11), wherein in the pumping cylinder (11)
, in the region of gap (12) that guide the pump piston (13) wherein, for for lubricating and when necessary for cooling combustion
Structure for oil has the inflow slot (17) for the top being connected in first pressure level by least one inflow hole (20) and by extremely
A few tap hole (22) is connected to the spout (19) of the lower section in second pressure level, which is characterized in that in the pumping cylinder
(11) it is configured between the inflow slot (17) of the top and the spout (19) of the lower section in the region in gap (12)
The inflow slot (18) of another centre, the inflow slot (18) are connected in first pressure level by least one inflow hole (21),
Wherein, the lower section spout (19) top edge (23) and the centre inflow slot (18) lower edge (24) between
It is configured with the first guide plate (25) for the pump piston (13), and the top edge of the inflow slot (18) in the centre
(26) the second guidance for the pump piston (13) is configured between the lower edge (27) of the inflow slot (17) of the top
Piece (28), wherein axial direction groove height B possessed by the inflow slot (18) of the centre is greater than the piston row of the pump piston (13)
Journey A, and be wherein applicable in for the axial groove height B of the inflow slot (18) of the centre: B > A-C1-D, wherein C1 is institute
Between axial direction between the lower edge (24) of the inflow slot (18) of the top edge (23) and the centre of spout (19) below stating
Away from, and wherein D is the top edge (23) of the spout (19) of the lower section and the contact point (31) of the scraping element (30)
Between axial spacing.
2. fuel pump according to claim 1, which is characterized in that in the region in the gap (12) of the pumping cylinder (11)
The lower section of the spout (19) of the lower section accommodates scraping element (30) in the slot (29) of the pumping cylinder (11).
3. fuel pump according to claim 2, which is characterized in that high for the axial groove of the inflow slot (18) of the centre
It is applicable in for degree B: B > A-C1.
4. fuel pump according to any one of claim 1 to 3, which is characterized in that lead to the inflow slot of the centre
(18) inflow hole (21) or each inflow hole (21) of inflow slot (18) for leading to the centre are at least partially than logical
To the inflow slot (17) of the top inflow hole (20) or lead to the top inflow slot (17) each inflow hole (20)
Smaller cross section, so that there are bigger than in the inflow slot (18) of the centre in the inflow slot (17) of the top
Feed pressure.
5. fuel pump according to any one of claim 1 to 3, which is characterized in that lead to the inflow slot of the centre
(18) inflow hole (21) or lead to the centre inflow slot (18) each inflow hole (21) and the centre inflow slot
(18) lower edge (24) is adjacent in the inflow slot (18) for being imported into the centre.
6. fuel pump according to claim 5, which is characterized in that lead to the inflow hole of the inflow slot (18) of the centre
(21) or lead to the centre inflow slot (18) each inflow hole (21) and the centre inflow slot (18) lower edge
(24) it flushes and is imported into the inflow slot of the centre.
7. fuel pump according to any one of claim 1 to 3, which is characterized in that the inflow slot (17,18) passes through institute
Stating inflow hole (20,21) may be connected on the area of low pressure of the oil common rail system.
8. fuel pump according to any one of claim 1 to 3, which is characterized in that the spout (19) passes through described
Tap hole (22) or each tap hole (22) may be connected to the oil common rail system, in the region that wherein there is environmental pressure
On.
9. fuel pump according to any one of claim 1 to 3, which is characterized in that be so assigned the guide plate (25,
28), so that the pump piston (13) it is on the guide plate (25,28), in fouling when formed and depend on the guidance
The adhesive force in the face of piece (25,28) is less than the restoring force of driving spring (15).
10. fuel pump according to claim 1, which is characterized in that the fuel pump (10) is the height of oil common rail system
Compression ignition oil pump.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014014475.5 | 2014-09-27 | ||
| DE102014014475.5A DE102014014475A1 (en) | 2014-09-27 | 2014-09-27 | Fuel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105464869A CN105464869A (en) | 2016-04-06 |
| CN105464869B true CN105464869B (en) | 2019-11-05 |
Family
ID=54238269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510619921.0A Active CN105464869B (en) | 2014-09-27 | 2015-09-25 | Fuel pump |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3001026B1 (en) |
| JP (1) | JP6605274B2 (en) |
| KR (1) | KR102252934B1 (en) |
| CN (1) | CN105464869B (en) |
| DE (1) | DE102014014475A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2554731B (en) * | 2016-10-07 | 2019-04-03 | Caterpillar Motoren Gmbh & Co | Piston pump having push rod assembly and stopping assembly |
| DE102019116353B4 (en) * | 2019-06-17 | 2020-12-24 | Man Energy Solutions Se | Fuel pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129883A (en) * | 1982-11-05 | 1984-05-23 | Lucas Ind Plc | Liquid fuel injection pump |
| WO2002063158A1 (en) * | 2001-02-08 | 2002-08-15 | Robert Bosch Gmbh | Fuel system, method for operating the fuel system, computer programme and control device and/or regulator for controlling said system |
| EP1323919A2 (en) * | 2001-12-28 | 2003-07-02 | Nissan Motor Co., Ltd. | Fuel pump |
| EP1355059A2 (en) * | 2002-04-19 | 2003-10-22 | Nissan Motor Co., Ltd. | Fuel pump |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006049759B4 (en) | 2006-10-21 | 2018-08-09 | Man Diesel & Turbo Se | Fuel pump |
| DE102007019909B4 (en) | 2007-04-27 | 2019-07-11 | Man Energy Solutions Se | Fuel pump with leakage grooves |
| EP2339166A1 (en) * | 2009-12-23 | 2011-06-29 | Caterpillar Motoren GmbH & Co. KG | Purging method and system with scraper or wiper ring for preventing formation of deposits inside fuel pump |
-
2014
- 2014-09-27 DE DE102014014475.5A patent/DE102014014475A1/en not_active Withdrawn
-
2015
- 2015-09-22 KR KR1020150133968A patent/KR102252934B1/en active IP Right Grant
- 2015-09-25 EP EP15186842.9A patent/EP3001026B1/en active Active
- 2015-09-25 CN CN201510619921.0A patent/CN105464869B/en active Active
- 2015-09-25 JP JP2015188188A patent/JP6605274B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129883A (en) * | 1982-11-05 | 1984-05-23 | Lucas Ind Plc | Liquid fuel injection pump |
| WO2002063158A1 (en) * | 2001-02-08 | 2002-08-15 | Robert Bosch Gmbh | Fuel system, method for operating the fuel system, computer programme and control device and/or regulator for controlling said system |
| EP1323919A2 (en) * | 2001-12-28 | 2003-07-02 | Nissan Motor Co., Ltd. | Fuel pump |
| EP1355059A2 (en) * | 2002-04-19 | 2003-10-22 | Nissan Motor Co., Ltd. | Fuel pump |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3001026B1 (en) | 2017-12-06 |
| CN105464869A (en) | 2016-04-06 |
| DE102014014475A1 (en) | 2016-03-31 |
| KR20160037772A (en) | 2016-04-06 |
| JP6605274B2 (en) | 2019-11-13 |
| KR102252934B1 (en) | 2021-05-18 |
| JP2016070277A (en) | 2016-05-09 |
| EP3001026A1 (en) | 2016-03-30 |
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