CN106640456A - Pump rail body for fuel injection system of internal combustion engine - Google Patents
Pump rail body for fuel injection system of internal combustion engine Download PDFInfo
- Publication number
- CN106640456A CN106640456A CN201611226165.6A CN201611226165A CN106640456A CN 106640456 A CN106640456 A CN 106640456A CN 201611226165 A CN201611226165 A CN 201611226165A CN 106640456 A CN106640456 A CN 106640456A
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- CN
- China
- Prior art keywords
- rail body
- duct
- pump rail
- storage
- chamber
- 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.)
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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
- F02M59/02—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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to a pump rail body for a fuel injection system of an internal combustion engine. The pump rail body is provided with a plunger compression cavity (101) and a high-pressure storage cavity (102). Therefore, the pump rail body for the fuel injection system of the internal combustion engine, which achieves double functions including fuel compression and storage by using a simple structure, is provided.
Description
Technical field
The present invention relates to pump rail body, more particularly relates to the pump rail body of internal combustion engine fuel injection system.
Background technology
The mechanical single cylinder pump sprayer of existing single cylinder diesel and electronically controlled unit pump device are all single post
Plug compression pump mode, without high pressure storage device, diesel compression pressure depends primarily on the rotating speed of driving cam and cam contour work
The speed of section, it is impossible to take into account demand of the different operating modes to pressure.Especially in middle low speed, it is difficult to which of a relatively high pressure is provided,
Atomization badness, economy and discharge index is caused to deteriorate.
In addition, in existing multi-cylinder engine technology, " condominium technology " is widely adopted.Generally pattern is：By one
The fuel under high pressure that plug-in high pressure pump assembly is produced is sent to the special independence length on IC engine cylinder lid by pipeline
Cast rail, wherein being connected to the pipeline of the electrically controlled injector for leading to each cylinder on type rail.The automatically controlled fuel injection skill of this pressure storage type
Art has substantially met the timing of each operating mode of internal combustion engine, the quantitative, requirement of level pressure.But the prior art to the manufacture of long tube type rail and
Super-pressure static sealing is proposed high requirement.And, multi-cylinder engine that rotating speed high big for power per cylinder, to obtain
The preferable stability of storage fuel in type rail, need continuous increase type rail length and storage cavity volume, cause that engine is cold to be opened
Dynamic difficulty.
If the fuel storage of ram compression can be got up in a part, there is provided needed for each operating mode of internal combustion engine not
Same charge oil pressure, then for single cylinder diesel can significantly improve the quality of diesel combustion, obtain preferable fuel economy
And discharge index；For multi-cylinder engine, the space that independent long tube type rail is set can be saved, improve cooling performance.
The content of the invention
In view of the above problems, the purpose of the present invention aims to provide a kind of compression using simple constitution realization fuel oil and storage
Dual-use function the pump rail body for internal combustion engine fuel injection system.
For this purpose, the present invention includes but is not limited to following proposal.
The present invention provides a kind of pump rail body for internal combustion engine fuel injection system, and the pump rail body has ram compression chamber
With storage of higher pressures chamber.
Preferably, the top of the pump rail body is provided with the flange of fastening installation, and the pump rail body is from below flange face
For the cylindricality being tapered.
Preferably, the position of flange face is provided with one or more side boss on the top of the pump rail body.
Preferably, the side boss have screwed hole for installing pressure sensor or hydraulic oil output device and
Lead to the passage in the storage of higher pressures chamber.
Preferably, the top in the ram compression chamber is disposed radially the first duct connected with fuel oil input area,
First duct is with the inlet valve sealing cone for one-way sealing；In the ram compression chamber and the storage of higher pressures chamber
Between be provided with the second duct, second duct is with the check-valve cone for one-way sealing.
Preferably, the top in the ram compression chamber has been disposed radially first duct and first duct
The cavity volume for installing inlet valve device and the screwed hole for fixing the oil-feed valve gear of connection.
Preferably, between the ram compression chamber and the storage of higher pressures chamber it is axially disposed have second duct,
With the cavity volume for installing oil outlet valve device and the screwed hole for fixing the oil outlet valve device of second hole link,
Second duct connects with the cavity volume for being used to install inlet valve device, for fixing the spiral shell of the oil outlet valve device
Pit is connected with the storage of higher pressures chamber.
Preferably, be disposed radially between the ram compression chamber and the storage of higher pressures chamber second duct,
With the cavity volume for installing oil outlet valve device and the screwed hole for fixing the oil outlet valve device of second hole link,
Second duct connects via the 3rd duct for axially extending with the cavity volume for being used to install inlet valve device, for pacifying
The cavity volume of dress oil outlet valve device is connected via the 4th duct for axially extending with the storage of higher pressures chamber.
Preferably, the upper end of the pump rail body has the screwed hole for installing hydraulic oil output device.
Preferably, the ram compression chamber and the storage of higher pressures chamber are arranged coaxially with each other.
In the pump rail body for internal combustion engine fuel injection system of the present invention, while being provided with ram compression chamber and high pressure
Storage chamber, the fuel oil of ram compression by can the passage of unidirectional blocking feed storage of higher pressures chamber, externally exported by storage of higher pressures chamber.
Therefore, using simple constitution realization fuel oil compression and storage dual-use function, and with being compact, easy to install, high densification
Seal ring section is little, intensity is high, good reliability the advantages of.
Description of the drawings
Multiple embodiments of the present invention are shown in the drawings, and in the following description detailed retouching are carried out to them
State.
Fig. 1 is the profile of the pump rail body for internal combustion engine fuel injection system according to a first embodiment of the present invention；
Fig. 2 is the axonometric drawing of the pump rail body for internal combustion engine fuel injection system shown in Fig. 1；
Fig. 3 is the profile of the pump rail body for internal combustion engine fuel injection system according to a second embodiment of the present invention；
Fig. 4 is the axonometric drawing of the pump rail body for internal combustion engine fuel injection system shown in Fig. 3.
Specific embodiment
The preferred embodiments of the present invention are further detailed with reference to the accompanying drawings.It will be appreciated, however, that these are said
It is bright be only it is exemplary, be not used in restriction the scope of the present invention.
Fig. 1 and Fig. 2 examples go out according to a first embodiment of the present invention for internal combustion engine (such as diesel engine) fuel oil injection be
The pump rail body of system, wherein Fig. 1 is profile, and Fig. 2 is axonometric drawing.
In this manual, if no special instructions, direction (i.e. Fig. 1 and Fig. 3 of the axis parallel to pump rail body is axially referred to
In above-below direction) or be roughly parallel to pump rail body axis direction, radially refer to the direction of the radial direction parallel to pump rail body
(left and right directions i.e. in Fig. 1 and Fig. 3) or be roughly parallel to pump rail body radial direction direction.
As depicted in figs. 1 and 2, pump rail body is generally a cylindrical shape.The top of pump rail body is provided with the method for fastening installation
Blue 401, subtract step by step carefully from the following pump rail body of flange face.In the inside of pump rail body, open up along the axis direction of pump rail body on top
Storage of higher pressures chamber 102, in bottom and storage of higher pressures chamber 102 ram compression chamber 101 has coaxially been opened up.
Coaxially machined what is connected with ram compression chamber 101 with storage of higher pressures chamber 102 from the lower end in storage of higher pressures chamber 102
Second duct 202 and cavity volume 501 and screwed hole 502 for fixing oil outlet valve device for installing oil outlet valve device.With
Connect with storage of higher pressures chamber 102 in the screwed hole 502 of fixed oil outlet valve device.In the close storage of higher pressures chamber in the second duct 202
102 one end is machined with the check-valve cone 301 for one-way sealing.
The screwed hole 503 for installing hydraulic oil output device is machined in the upper end in storage of higher pressures chamber 102.In pump rail body
Top be additionally provided with a side boss 402 higher than the position of flange face.Machined in side boss 402 for installing pressure
The screwed hole 505 of force snesor, the screwed hole 505 is connected by passage (inclined hole 507) with storage of higher pressures chamber 102.
In addition, radially having opened up the first duct 201 for leading to pump rail external body on the top in ram compression chamber 101.
The one end in the close ram compression chamber 101 in the first duct 201 is machined with the inlet valve sealing cone 302 for one-way sealing.With
First duct 201 is coaxially disposed the cavity volume 506 for being installed into fuel tap device and the spiral shell for fixing oil-feed valve gear
Pit 504.Cavity volume 506 for installing inlet valve device is connected with the second duct 202.
Three through holes 403 fixed for screw have been opened up in the flange 401 of fastening installation.Side boss 402 is in pump
Rail body is circumferentially arranged between the position for having opened up through hole 403 of flange 401.
By installing pressure sensor in the screwed hole 505 of side boss 402, install in screwed hole 503 directly with
The hydraulic oil output device of the unshowned Electrocontrolled high-pressure injector connection of internal combustion engine, can use the pump rail body of first embodiment
In single cylinder diesel fuel injection system.
Referring to Fig. 3 and Fig. 4 explanation second embodiment of the present invention.Fig. 3 and Fig. 4 examples go out another for internal combustion engine
The pump rail body of (such as diesel engine) fuel injection system, wherein Fig. 3 is profile, and Fig. 4 is axonometric drawing.In figs. 3 and 4, it is right
In marking identical reference with the same or analogous part of first embodiment, and eliminate to these parts specifically
It is bright.
As shown in Figure 3 and Figure 4, identical with first embodiment, the pump rail body of the present embodiment is generally a cylindrical shape.In pump rail body
Top be provided with fastening installation flange 401, flange 401 opened up for screw fix through hole 403, from flange face
Following pump rail body subtracts step by step carefully.From unlike first embodiment, in the present embodiment, the quantity of the through hole that flange 401 is opened up
It is not three, but two.
It is identical with first embodiment, in the present embodiment, in the inside of pump rail body, top along pump rail body axis direction
Storage of higher pressures chamber 102 is opened up, in bottom and storage of higher pressures chamber 102 ram compression chamber 101 has coaxially been opened up.In ram compression
The top in chamber 101 has radially opened up the first duct 201 for leading to pump rail external body and in the close plunger pressure in the first duct 201
The one end in contracting chamber 101 is machined with the inlet valve sealing cone 302 for one-way sealing, is radially additionally provided with and the first duct
The cavity volume 506 for installing inlet valve device and the screwed hole 504 for fixing oil-feed valve gear of 201 connections.It is real with first
Apply unlike example, the axis in the first duct 201 is not, all the time along radial direction, but to be communicated in one end of fuel oil input area
Relative to being radially orientated, the place side of ram compression chamber 101 is inclined.So arranging the first duct 201 enables pump rail body to provide
Enough spaces are used for being disposed radially the following screwed hole 502 for fixing oil outlet valve device and for installing delivery valve dress
The cavity volume 501 put.
In addition, second embodiment is with first embodiment main difference part, and in the present embodiment, storage of higher pressures chamber 102
The method that transition is led to is employed between ram compression chamber 101.Specifically, in storage of higher pressures chamber 102 and ram compression chamber 101
Between be disposed radially the second duct 202 with check-valve cone 301 and the cavity volume for installing oil outlet valve device
501 and for fixing the screwed hole 502 of oil outlet valve device；Second duct 202 via the 3rd duct 2022 for axially extending with
Cavity volume 506 for installing inlet valve device is connected, for installing the cavity volume 501 of oil outlet valve device via for axially extending
Four ducts 2021 connect with storage of higher pressures chamber 102.Though this frame mode increased a high pressure sealing point and but greatly reduce
Technology difficulty.
In addition, as shown in figure 4, in the present embodiment, the position for being slightly above flange face on the top of pump rail body is provided with two
Individual side boss 402a, 402b.Two side boss 402a, 402b are circumferentially arranged at opening up for flange 401 pump rail body
Between the position of through hole 403.It is machined with respectively for installing hydraulic oil output device and pressure in side boss 402a, 402b
Screwed hole 505a, 505b of sensor.Screwed hole 505a, 505b are respectively by inclined hole 507a, a 507b and storage of higher pressures chamber 102
It is connected.The upper end in storage of higher pressures chamber 102 is machined with the screwed hole 503 of sealing.
Directly sprayed with the unshowned Electrocontrolled high-pressure of internal combustion engine by installing in the screwed hole 505a of side boss 402a
The hydraulic oil output device of emitter connection, in screwed hole 505b pressure sensor is installed, can be by the pump rail of second embodiment
Body is used for single cylinder diesel fuel injection system.
Following modification can also be carried out to the pump rail body of second embodiment：Screwed hole 505a and side in side boss 402a
The high pressure for directly connecting with the unshowned Electrocontrolled high-pressure injector of internal combustion engine is respectively mounted in the screwed hole 505b for putting boss 402b
Oily output device, in screwed hole 503 pressure sensor is installed, such that it is able to the pump rail body of the modification is used for into multi-cylinder engine
Fuel injection system.
Furthermore it is also possible to carry out following modification to the pump rail body of second embodiment：In the screwed hole of side boss 402a
It is respectively mounted in the screwed hole 505b of 505a and side boss 402b and directly connects with the unshowned Electrocontrolled high-pressure injector of internal combustion engine
Logical hydraulic oil output device, pressure sensor is not installed in screwed hole 503 but screwed hole 503 is arranged into real with second
An identical sealing screwed hole is applied, such that it is able to the pump rail body of the modification is used for via the distributor with pressure sensor
It is connected to the multi-cylinder engine fuel injection system of Electrocontrolled high-pressure injector.
Beneficial effects of the present invention are briefly described below.
In the pump rail body for internal combustion engine fuel injection system of the present invention, while being provided with a ram compression chamber
101 and a storage of higher pressures chamber 102, the fuel oil of ram compression by can the passage of unidirectional blocking feed storage of higher pressures chamber 102, by
Storage of higher pressures chamber 102 externally exports.Therefore, using simple constitution realization fuel oil compression and storage dual-use function, and have
It is compact, easy to installation, high pressure sealing link is little, intensity is high, good reliability.
The present invention the pump rail body for internal combustion engine fuel injection system in, ram compression chamber 101 top along footpath
To the first duct 201 for connecting with fuel oil input area is provided with, the first duct 201 seals with the inlet valve for one-way sealing
The conical surface 302, is additionally provided with the second duct 202 between ram compression chamber 101 and storage of higher pressures chamber 102, and the second duct 202 carries
Check-valve cone 301.Therefore, simply realize between ram compression chamber 101 and outside fuel delivery and compression combustion
Contacting between oil and storage of higher pressures chamber 102.
In the pump rail body for internal combustion engine fuel injection system of the present invention, it is provided with (logical with multiple fastening installing holes
Hole 403) fastening installation flange 401.It thus provides pump rail body is securedly mounted to the different choice on internal combustion engine.
It should be appreciated that " high pressure " in " storage of higher pressures chamber ", " hydraulic oil output device " for mentioning in the application etc. is phase
For other areas of low pressure in internal combustion engine or part.Those skilled in the art understand certainly, or are at most reading this
The implication of above-mentioned " high pressure " is can be appreciated that on the basis of the specification of application.
It should be appreciated that embodiments presented above is for illustration only the preferred embodiment of the present invention, restriction is not used in originally
The scope of invention.Those skilled in the art can make various changing to the above embodiment of the present invention under the teachings of the present invention
Become and modification.One or several elements or feature in same embodiment or different embodiments are likely to constitute new beneficial reality
Example is applied, different embodiments can be combined as.
Claims (10)
1. a kind of pump rail body for internal combustion engine fuel injection system, the pump rail body has ram compression chamber (101) and high pressure
Storage chamber (102).
2. pump rail body according to claim 1, it is characterised in that
The top of the pump rail body is provided with the flange (401) of fastening installation, and the pump rail body is from below flange face for gradually
Subtract thin cylindricality.
3. pump rail body according to claim 2, it is characterised in that
The top of the pump rail body higher than the position of flange face be provided with one or more side boss (402,402a,
402b)。
4. pump rail body according to claim 3, it is characterised in that
The side boss (402,402a, 402b) has the screwed hole for installing pressure sensor or hydraulic oil output device
(505,505a, 505b) and lead to the passage (507,507a, 507b) of the storage of higher pressures chamber (102).
5. pump rail body according to any one of claim 1 to 4, it is characterised in that
The first duct (201) connected with fuel oil input area, institute are disposed radially on the top of the ram compression chamber (101)
The first duct (201) is stated with the inlet valve sealing cone (302) for one-way sealing；
It is provided with the second duct (202) between the ram compression chamber (101) and the storage of higher pressures chamber (102), described
Two ducts (202) are with the check-valve cone (301) for one-way sealing.
6. pump rail body according to claim 5, it is characterised in that
First duct (201) and first duct have been disposed radially on the top of the ram compression chamber (101)
(201) cavity volume (506) for installing inlet valve device and the screwed hole for fixing the oil-feed valve gear of connection
(504)。
7. pump rail body according to claim 6, it is characterised in that
It is axially disposed between the ram compression chamber (101) and the storage of higher pressures chamber (102) to have second duct
(202) cavity volume (501) for installing oil outlet valve device that connects with second duct (202) and for going out described in fixed
The screwed hole (502) of fuel tap device,
Second duct (202) connects with the cavity volume (506) for being used to install inlet valve device, described fuel-displaced for fixing
The screwed hole (502) of valve gear is connected with the storage of higher pressures chamber (102).
8. pump rail body according to claim 6, it is characterised in that
Second duct has been disposed radially between the ram compression chamber (101) and the storage of higher pressures chamber (102)
(202) cavity volume (501) for installing oil outlet valve device that connects with second duct (202) and for going out described in fixed
The screwed hole (502) of fuel tap device,
Second duct (202) via the 3rd duct (2022) for axially extending with for installing the described of inlet valve device
Cavity volume (506) is connected, for installing the cavity volume (501) of oil outlet valve device via the 4th duct (2021) for axially extending
Connect with the storage of higher pressures chamber (102).
9. pump rail body according to any one of claim 1 to 4, it is characterised in that the upper end of the pump rail body has to be used
In the screwed hole (503) for installing hydraulic oil output device.
10. pump rail body according to any one of claim 1 to 4, it is characterised in that the ram compression chamber (101) and
The storage of higher pressures chamber (102) is arranged coaxially with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611226165.6A CN106640456B (en) | 2016-12-27 | 2016-12-27 | For the pump rail body of internal combustion engine fuel injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611226165.6A CN106640456B (en) | 2016-12-27 | 2016-12-27 | For the pump rail body of internal combustion engine fuel injection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106640456A true CN106640456A (en) | 2017-05-10 |
| CN106640456B CN106640456B (en) | 2018-05-29 |
Family
ID=58832802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611226165.6A Active CN106640456B (en) | 2016-12-27 | 2016-12-27 | For the pump rail body of internal combustion engine fuel injection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106640456B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020017278A1 (en) * | 1999-11-19 | 2002-02-14 | Crt Common Rail Technologies Ag | High-pressure injection system |
| CN101149032A (en) * | 2006-09-20 | 2008-03-26 | 无锡油泵油嘴研究所 | Common rail system high pressure oil-feeding pump |
| CN102162419A (en) * | 2011-04-01 | 2011-08-24 | 宁波舜田良源油嘴油泵有限公司 | Double-cylinder line-up fuel injection pump for diesel engine |
| CN202012427U (en) * | 2011-03-02 | 2011-10-19 | 无锡威孚高科技集团股份有限公司 | Common-rail high-pressure pump with integrated pump and rail |
| CN103089508A (en) * | 2013-02-06 | 2013-05-08 | 福建省莆田市中涵机动力有限公司 | Coaxial type common rail pump oil inlet and outlet combined valve |
| CN104847554A (en) * | 2015-04-09 | 2015-08-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Electric control unit pump for diesel machine |
| CN205744225U (en) * | 2016-06-18 | 2016-11-30 | 常州博瑞油泵油嘴有限公司 | The common rail pump parts of single cylinder diesel high voltage common rail pump |
-
2016
- 2016-12-27 CN CN201611226165.6A patent/CN106640456B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020017278A1 (en) * | 1999-11-19 | 2002-02-14 | Crt Common Rail Technologies Ag | High-pressure injection system |
| CN101149032A (en) * | 2006-09-20 | 2008-03-26 | 无锡油泵油嘴研究所 | Common rail system high pressure oil-feeding pump |
| CN202012427U (en) * | 2011-03-02 | 2011-10-19 | 无锡威孚高科技集团股份有限公司 | Common-rail high-pressure pump with integrated pump and rail |
| CN102162419A (en) * | 2011-04-01 | 2011-08-24 | 宁波舜田良源油嘴油泵有限公司 | Double-cylinder line-up fuel injection pump for diesel engine |
| CN103089508A (en) * | 2013-02-06 | 2013-05-08 | 福建省莆田市中涵机动力有限公司 | Coaxial type common rail pump oil inlet and outlet combined valve |
| CN104847554A (en) * | 2015-04-09 | 2015-08-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Electric control unit pump for diesel machine |
| CN205744225U (en) * | 2016-06-18 | 2016-11-30 | 常州博瑞油泵油嘴有限公司 | The common rail pump parts of single cylinder diesel high voltage common rail pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106640456B (en) | 2018-05-29 |
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