CN101903639A - High-pressure fuel pump - Google Patents
High-pressure fuel pump Download PDFInfo
- Publication number
- CN101903639A CN101903639A CN2008801222844A CN200880122284A CN101903639A CN 101903639 A CN101903639 A CN 101903639A CN 2008801222844 A CN2008801222844 A CN 2008801222844A CN 200880122284 A CN200880122284 A CN 200880122284A CN 101903639 A CN101903639 A CN 101903639A
- Authority
- CN
- China
- Prior art keywords
- pump
- high pressure
- low
- pressure fuel
- fuel
- 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
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Images
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
- F02M59/02—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
- F02M59/04—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
- F02M59/06—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
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- 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
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- 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
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- 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
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 invention relates to a high-pressure fuel pump for operating an internal combustion engine, comprising a pump housing (1) and two pump cylinder heads (2a, 2b) attached thereto, in which a pump piston (3a, 3b) for compressing fuel under low pressure is guided from a low-pressure inlet (6a, 6b) into a pressure chamber (8a, 8b) at high pressure and for delivery of the fuel to a high-pressure connection (13a, 13b) of a high-pressure storage, wherein the two pump pistons (3a, 3b) can be operated via a common polygonal configuration (4) of a pump cam shaft (5), wherein the two pump cylinder heads (2a, 2b) are further attached on the pump housing (1) such that the two pump pistons (3a, 3b) are positioned at an angle of 120 DEG to each other.
Description
Technical field
The present invention relates to be used for the high pressure fuel pump of internal combustion engine, it is made up of a pump case and two pumping cylinder heads that are assemblied on this pump case, in these pumping cylinder heads, respectively guide a pump piston so that will be from fuel under the low pressure is compressed to high pressure and fuel is transported to high pressure accumulator in each hyperbaric chamber each high voltage interface that is in of each low pressure input channel, wherein, two pump pistons can drive by the common polygonal configuration of a pump camshaft.
Background technique
By DE 196 35 164 A1 known a kind of high pressure fuel pump like this, it is made up of the pump case of a split, three pump pistons that are directed to drive by one of the pump camshaft common polygonal in pump case.Here pump piston is respectively arranged with mutual 120 ° angle, and moving by pump piston and by being pressed into of pump camshaft makes the fuel from the low pressure input channel be compressed into high pressure in the pressure chamber that respectively is located at above the pump piston.This fuel that is under the high pressure is transported to a high pressure accumulator by pressure duct in addition.A kind of like this high pressure fuel pump is applicable to the work of the internal-combustion engine with 6 cylinders when the rotating speed of pump camshaft equals the rotating speed of engine crankshaft.
The shortcoming of this known technology is, when using this high pressure fuel pump to be used to have the internal-combustion engine of 4 cylinders, will use two pump pistons, another kind of pump case for the viewpoint of economy thus, and wherein two pump pistons will be on the spot centering on the pump cam shaft arrangement.And use another kind of pump case will cause the raising of manufacture cost, because compare the essential other mfg. moulding die that uses with the situation of the pump case of three cylinder high pressure fuel pumps.
Summary of the invention
Therefore task of the present invention is that propose a kind of high pressure fuel pump, wherein the different pump piston numbers for high pressure fuel pump can use a kind of pump case.
This task solves like this according to the present invention: two pumping cylinder heads are fixed on the pump case in this wise, and promptly two pump pistons are arranged with one 120 ° angle mutually.Therefore can use the pump case of high pressure fuel pump to reach the structure of the pump case alone that can save the high pressure fuel pump that is used for two pump pistons thus and the expense of manufacturing with three pump pistons.
In a further configuration of the present invention, be provided with a batching unit that is used for relative two pump pistons are become two pump piston low pressure input channel fuelings of hexagonal angle.Setting in this zone is owing to the good realizability of existing structure space and two low pressure input channels has advantage.
In another configuration of the present invention, the driving rotating speed of this high pressure fuel pump is 2/3 of an internal-combustion engine rotational speed.The synchronous requirement of part that can realize the high pressure accumulator of the relative internal-combustion engine of pump by this measure reaches the work that guarantees internal-combustion engine thus.
In a further configuration of the present invention, batching unit is combined in the low briquetting, and this low pressure is packaged to be fitted on the pump case and be provided with a groove on mating face, and two low pressure input channels converge in this groove with the angle greater than 90 °.Combination by batching unit can obtain a compact structure, and the setting by groove and two low pressure input channels can guarantee the reliable supply of fuel to the pumping cylinder head simultaneously.
In another configuration of the present invention, in low briquetting, be provided with the low-voltage interface that a relative batching unit is spent at an angle of 90.At this advantageously, the fuel input part that is used for batching unit also is arranged on high pressure fuel pump very compactly.
Other corrective measure of the present invention will jointly illustrate by the description of reference accompanying drawing to a preferred embodiment of the invention following.
Description of drawings
Unique accompanying drawing is represented a sectional view in the plane of arrangement of pump piston according to high pressure fuel pump of the present invention.
Embodiment
This high pressure fuel pump comprises a pump case 1, arranges two pumping cylinder head 2a and 2b with mutual 120 ° angle on this pump case.Each guiding pump piston 3a and 3b in these two pumping cylinder head 2a and 2b, these pump pistons form with one of pump camshaft 5 common polygonal configuration 4 at the center of pump case 1 and contact.Suction valve 7a and 7b supply with the fuel that is under the low pressure by low pressure input channel 6a and 6b to corresponding pump piston 3a and 3b among this external pumping cylinder head 2a and the 2b.Suction valve 7a and 7b inject fuel to being arranged in pump piston 3a and the 8a of pressure chamber above the 3b and 8b again.Low pressure input channel 6a and 6b are connected with the groove 9 of a low briquetting 10 on opposite side.In the zone of groove 9, be provided with a batching unit 11, this batching unit is supplied with the fuel that is under the low pressure by a low-voltage interface 12 by a unshowned transfer pump and decide dosage of fuel on the operation point of internal-combustion engine, and this batching unit reaches lead thus low pressure input channel 6a and 6b with fuel guiding groove 9 again.Respectively be provided with a high voltage interface 13a and 13b in the 8a of pressure chamber of this external pump piston 3a and 3b and the zone of 8b, these high voltage interfaces form with a unshowned high pressure accumulator and are connected.
When internal combustion engine, produce the translational motion of pump piston 3a and 3b by rotatablely moving of pump camshaft and polygonal configuration 4, this causes: fuel supplies among 8a of pressure chamber and the 8b by low pressure input channel 6a and 6b and suction valve 7a and 7b, and is compressed to high pressure here and is transported to high voltage interface 13a and 13b.
Claims (5)
1. the high pressure fuel pump that is used for operation of combustion engine, by a pump case (1) and two pumping cylinder head (2a that are assemblied on this pump case, 2b) form, in these pumping cylinder heads, respectively guide a pump piston (3a, 3b), being used for will be from each low pressure input channel (6a, 6b) be in fuel under the low pressure at each (8a of pressure chamber, be compressed to high pressure 8b) and fuel be transported to each high voltage interface (13a of a high pressure accumulator, 13b), wherein, (3a 3b) can drive by common polygonal configuration (4) by of pump camshaft (5) these two pump pistons, it is characterized in that: described two pumping cylinder head (2a, 2b) be fixed in this wise on the described pump case (1), (3a 3b) is in one 120 ° angle to make described two pump pistons.
2. according to the high pressure fuel pump of claim 1, it is characterized in that: be provided with a batching unit (11), be used for relative two pump pistons (3a, 3b) described two low pressure input channels (6a, 6b) fuelings of one-tenth hexagonal angle.
3. according to the high pressure fuel pump of claim 1 or 2, it is characterized in that: the driving rotating speed of this high pressure fuel pump be described internal-combustion engine rotating speed 2/3.
4. according to the high pressure fuel pump of claim 2, it is characterized in that: described batching unit (11) is combined in the low briquetting (10), the packaged described pump case (1) that fits over of this low pressure goes up and is provided with a groove (9) on mating face, (6a 6b) converges in this groove with the angle greater than 90 ° described two low pressure input channels.
5. according to the high pressure fuel pump of claim 4, it is characterized in that: in described low briquetting (10), be provided with a described relatively batching unit (11) low-voltage interface (12) at an angle of 90.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007062181.9 | 2007-12-21 | ||
| DE102007062181A DE102007062181A1 (en) | 2007-12-21 | 2007-12-21 | High pressure fuel pump |
| PCT/EP2008/066048 WO2009080425A1 (en) | 2007-12-21 | 2008-11-24 | High-pressure fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101903639A true CN101903639A (en) | 2010-12-01 |
Family
ID=40261020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801222844A Pending CN101903639A (en) | 2007-12-21 | 2008-11-24 | High-pressure fuel pump |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2235353B1 (en) |
| CN (1) | CN101903639A (en) |
| AT (1) | ATE526500T1 (en) |
| DE (1) | DE102007062181A1 (en) |
| WO (1) | WO2009080425A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103703247A (en) * | 2011-06-02 | 2014-04-02 | 德尔福技术控股有限公司 | Improvements to fuel pumps |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018108406A1 (en) * | 2017-06-22 | 2018-12-27 | Denso Corporation | High pressure fuel pump and fuel supply system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB460327A (en) * | 1935-11-27 | 1937-01-26 | Bristol Aeroplane Co Ltd | Improvements in or relating to fuel-injection pumps for internal-combustion engines |
| US2902989A (en) * | 1957-02-04 | 1959-09-08 | Gen Motors Corp | Charge forming means |
| DE19635164A1 (en) | 1996-08-30 | 1998-03-05 | Bosch Gmbh Robert | Piston pump |
| DE102004017049A1 (en) * | 2004-04-07 | 2005-10-27 | Robert Bosch Gmbh | Pump for use in braking system, has two pumping units between which feeder line with increased diameter is provided, so that additional absorption volume is made available, where cylinder bore of one unit is similar to that of other unit |
| JP4650629B2 (en) * | 2004-11-16 | 2011-03-16 | 株式会社アドヴィックス | Radial plunger pump |
| DE102006017301B4 (en) | 2006-04-12 | 2008-03-06 | Siemens Ag | pump |
-
2007
- 2007-12-21 DE DE102007062181A patent/DE102007062181A1/en not_active Withdrawn
-
2008
- 2008-11-24 EP EP08864925A patent/EP2235353B1/en not_active Not-in-force
- 2008-11-24 WO PCT/EP2008/066048 patent/WO2009080425A1/en active Application Filing
- 2008-11-24 CN CN2008801222844A patent/CN101903639A/en active Pending
- 2008-11-24 AT AT08864925T patent/ATE526500T1/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703247A (en) * | 2011-06-02 | 2014-04-02 | 德尔福技术控股有限公司 | Improvements to fuel pumps |
| US9291132B2 (en) | 2011-06-02 | 2016-03-22 | Delphi International Operations Luxembourg S.A.R.L. | Fuel pump assembly |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2235353B1 (en) | 2011-09-28 |
| ATE526500T1 (en) | 2011-10-15 |
| EP2235353A1 (en) | 2010-10-06 |
| DE102007062181A1 (en) | 2009-06-25 |
| WO2009080425A1 (en) | 2009-07-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101201 |