CN106499558A - A kind of plunger matching parts of anti-leak oil-stain-preventing and apply its injection pump - Google Patents
A kind of plunger matching parts of anti-leak oil-stain-preventing and apply its injection pump Download PDFInfo
- Publication number
- CN106499558A CN106499558A CN201710003450.XA CN201710003450A CN106499558A CN 106499558 A CN106499558 A CN 106499558A CN 201710003450 A CN201710003450 A CN 201710003450A CN 106499558 A CN106499558 A CN 106499558A
- Authority
- CN
- China
- Prior art keywords
- plunger
- oil
- matching parts
- bushing
- endoporus
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
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- 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 discloses a kind of plunger matching parts of anti-leak oil-stain-preventing and applying its injection pump, the plunger matching parts includes plunger bushing and plunger, endoporus is offered in the middle part of the plunger bushing, the plunger is assemblied in the endoporus of plunger bushing, the plunger is together with being additionally provided with the mating surface of plunger bushing bottom or two seals oil sealing, in the cannelure that the hermetic oil seal is opened up on the lower sides of the plunger bushing endoporus, the hermetic oil seal is worked in coordination and is constituted by an exterior seal ring and an interior oil-scraping ring in the cannelure together.The plunger matching parts good airproof performance, effectively can prevent internal hemorrhage due to trauma, improve lubricating condition, it is ensured that good structural behaviour, apply the injection pump of above-mentioned plunger matching parts, with excellent performance, the advantage of life-span length.
Description
Technical field
The present invention relates to diesel oil fuel system with high injection pressure field, more particularly to a kind of plunger idol of anti-leak oil-stain-preventing
Part and apply its injection pump.
Background technology
Plunger matching parts is the secondary precision pair in injection pump, due to there is radial clearance between plunger and plunger bushing, passes
Often there is the leakage of high pressure fuel in the course of the work in system plunger matching parts.As shown in figure 1, the fuel oil of high pressure chest 5 through plunger bushing 1 with
Gap between plunger 2, returns to low pressure oil pocket all the way along direction shown in arrow, separately has fraction fuel oil to continue traveling downwardly along plunger 2,
Lubricant reservoir is leaked to, fuel oil internal hemorrhage due to trauma is caused.Fuel oil internal hemorrhage due to trauma easily causes lubricating oil dilution affects the lubricant effect of diesel engine, sternly
Movement parts ablation is caused during weight.Also, there is a problem in that when traditional structure is actually used and shortcoming：1 rigid seal structure
With the continuous improvement of high-pressure fuel oil system pressure, amount of leakage can increase；2 rigid seal structures with the increase of use time,
The abrasion aggravation of plunger pair, fit clearance are increased, and leakage rate increases, and internal hemorrhage due to trauma increases；Can be by lubricating oil during 3 plunger motions
The soil such as aluminium skimmings bring plunger intracavity into and cause plunger stuck.
Content of the invention
It is an object of the invention to provide a kind of plunger matching parts good airproof performance of anti-leak oil-stain-preventing, effectively can prevent interior
Leakage, improves lubricating condition, it is ensured that good structural behaviour, so as to overcome existing traditional plunger matching parts to be easy to internal hemorrhage due to trauma, shadow
Lubrication is rung, and the stuck deficiency of plunger easily occurs.
A further object of the present invention is to provide the injection pump for applying above-mentioned plunger matching parts, with excellent performance, life-span length
Advantage.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of plunger matching parts of anti-leak oil-stain-preventing, including plunger bushing and plunger, offers endoporus in the middle part of the plunger bushing,
The plunger is assemblied in the endoporus of plunger bushing, and the plunger is together with being additionally provided with the mating surface of plunger bushing bottom or twice are close
Oil sealing is sealed, in the cannelure that the hermetic oil seal is opened up on the lower sides of the plunger bushing endoporus, described close together
Oil sealing envelope is worked in coordination and is constituted by an exterior seal ring and an interior oil-scraping ring in the cannelure.
A kind of injection pump, using the plunger matching parts of described anti-leak oil-stain-preventing.
At least there is advantages below due to adopting above-mentioned technical proposal, the present invention：
As in the plunger, together with being provided with the mating surface of plunger bushing bottom or two seals oil sealing, the present invention is adopted
Oil seal structure solves leakage (internal hemorrhage due to trauma) problem of plunger matching parts, while bringing lubrication during avoiding the occurrence of plunger motion into
The soil such as the aluminium skimmings in oil cause the stuck problem of plunger.
Description of the drawings
Above-mentioned be only technical solution of the present invention general introduction, in order to better understand the present invention technological means, below
In conjunction with accompanying drawing, the present invention is described in further detail with specific embodiment.
Fig. 1 is that the oil circuit of traditional plunger matching parts reveals schematic diagram.
Fig. 2 is the structural representation of the plunger matching parts of anti-leak oil-stain-preventing of the present invention.
Fig. 3 is the structural representation of two seals oil sealing.
Specific embodiment
The invention provides a kind of plunger matching parts of anti-leak oil-stain-preventing and applying its injection pump.Such as Fig. 2 and Fig. 3 institutes
Show, the plunger matching parts includes plunger bushing 1 and plunger 2, offers endoporus in the middle part of the plunger bushing 1, and the plunger 2 is assemblied in post
In the endoporus (i.e. plunger cavity) of plug sleeve 1, the plunger 2 is together with being additionally provided with 1 bottom mating surface of plunger bushing or two seals
Oil sealing 3, in the cannelure that the hermetic oil seal 3 is opened up on the lower sides of 1 endoporus of the plunger bushing, described close together
Oil sealing envelope 3 is worked in coordination and is constituted by an exterior seal ring 31 and an interior oil-scraping ring 32 in the cannelure.
Said structure provides sealing and arranges there is provided a kind of plunger matching parts of anti-internal hemorrhage due to trauma oil-stain-preventing.Two seals oil sealing can root
Used according to one of only selection or twice are needed simultaneously.As shown in Fig. 2,3, two seals oil sealing is used simultaneously.In post during enforcement
Upper and lower twice cannelure is dug in 1 bottom of plug sleeve, in the cannelure installs sealing ring 31 and oil-scraping ring 32, the sealing ring 31
Elastomeric material is adopted with oil-scrapping sheet 32.Wherein, sealing ring 31 is fitted and seals with plunger bushing 1 and oil-scraping ring 32, frizing
Ring 32 coordinates to play with plunger 2 in 2 motor process of plunger, to be prevented fuel oil from revealing and stops that the pollutant in lubricating oil enter post
The effect in plug chamber.Therefore, structure shown in figure is equivalent to defining in one upper diesel oil hermetic oil seal profit together with
Oil seal oil sealing.
When plunger 2 is up, the soil such as lubricating oil and aluminium skimmings on plunger 2 are sticked in seal oil oil sealing
Blocked under effect in outside, it is impossible to go successively to plunger cavity, it is to avoid plunger 2 is because of the entrance of soil stuck.High pressure
The fuel oil in chamber 5 is leaked to the drain pan on plunger bushing 1 through the gap of plunger matching parts, returns to low pressure chamber through drain pan, and diesel oil is sealed
Oil sealing is arranged to the seal pressure for bearing below 50Mpa, so as to effectively prevent fuel oil to be leaked to the lubricant reservoir of lower section.
To sum up, the present invention solves the problems, such as the internal hemorrhage due to trauma of plunger matching parts by hermetic oil seal structure, while avoid there is post
The soil such as the aluminium skimmings that brings in lubricating oil in plug motor process cause the stuck problem of plunger.Due to adopting above-mentioned technical side
Case, the plunger matching parts good airproof performance of the present invention, effectively can prevent internal hemorrhage due to trauma, improve lubricating condition, it is ensured that good structural behaviour,
The injection pump of above-mentioned plunger matching parts is applied, with excellent performance, the advantage of life-span length.
The above, is only presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention, this
Art personnel make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all fall within this
In bright protection domain.
Claims (2)
1. a kind of plunger matching parts of anti-leak oil-stain-preventing, including plunger bushing and plunger, offers endoporus, institute in the middle part of the plunger bushing
State plunger to be assemblied in the endoporus of plunger bushing, it is characterised in that in the plunger and plunger bushing bottom mating surface, be additionally provided with one
Road or two seals oil sealing, in the cannelure that the hermetic oil seal is opened up on the lower sides of the plunger bushing endoporus,
The hermetic oil seal is worked in coordination and is constituted by an exterior seal ring and an interior oil-scraping ring in the cannelure together.
2. a kind of injection pump, it is characterised in that using the plunger matching parts of the anti-leak oil-stain-preventing described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003450.XA CN106499558A (en) | 2017-01-04 | 2017-01-04 | A kind of plunger matching parts of anti-leak oil-stain-preventing and apply its injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003450.XA CN106499558A (en) | 2017-01-04 | 2017-01-04 | A kind of plunger matching parts of anti-leak oil-stain-preventing and apply its injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106499558A true CN106499558A (en) | 2017-03-15 |
Family
ID=58344966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710003450.XA Pending CN106499558A (en) | 2017-01-04 | 2017-01-04 | A kind of plunger matching parts of anti-leak oil-stain-preventing and apply its injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106499558A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852708A (en) * | 2020-08-10 | 2020-10-30 | 上海夏雪科技有限公司 | Fuel injection pumps, injectors, fuel injection systems and internal combustion engines |
| CN113659780A (en) * | 2021-10-19 | 2021-11-16 | 浙江零跑科技股份有限公司 | Oil-cooled motor capable of preventing bearing from electric corrosion |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10039974A1 (en) * | 1999-08-19 | 2001-02-22 | Scania Cv Ab | Fuel pump for diesel engines comprises a piston sealing unit provided with a channel which is joined to the fuel return line |
| EP1323919A2 (en) * | 2001-12-28 | 2003-07-02 | Nissan Motor Co., Ltd. | Fuel pump |
| CN1513095A (en) * | 2001-06-04 | 2004-07-14 | Nok株式会社 | Sealing means |
| CN102979652A (en) * | 2012-12-20 | 2013-03-20 | 余姚市舒春机械有限公司 | Marine plunger matching part |
| DE102014214294A1 (en) * | 2014-07-22 | 2016-01-28 | Robert Bosch Gmbh | High-pressure fuel pump, in particular plug-in pump |
| CN105422346A (en) * | 2015-12-11 | 2016-03-23 | 中国北方发动机研究所(天津) | Plunger and barrel assembly for high-flow high-rotation speed rotor type high pressure common rail variable pump |
| CN206309510U (en) * | 2017-01-04 | 2017-07-07 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of plunger matching parts of anti-leak oil-stain-preventing and apply its injection pump |
-
2017
- 2017-01-04 CN CN201710003450.XA patent/CN106499558A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10039974A1 (en) * | 1999-08-19 | 2001-02-22 | Scania Cv Ab | Fuel pump for diesel engines comprises a piston sealing unit provided with a channel which is joined to the fuel return line |
| CN1513095A (en) * | 2001-06-04 | 2004-07-14 | Nok株式会社 | Sealing means |
| EP1323919A2 (en) * | 2001-12-28 | 2003-07-02 | Nissan Motor Co., Ltd. | Fuel pump |
| CN102979652A (en) * | 2012-12-20 | 2013-03-20 | 余姚市舒春机械有限公司 | Marine plunger matching part |
| DE102014214294A1 (en) * | 2014-07-22 | 2016-01-28 | Robert Bosch Gmbh | High-pressure fuel pump, in particular plug-in pump |
| CN105422346A (en) * | 2015-12-11 | 2016-03-23 | 中国北方发动机研究所(天津) | Plunger and barrel assembly for high-flow high-rotation speed rotor type high pressure common rail variable pump |
| CN206309510U (en) * | 2017-01-04 | 2017-07-07 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of plunger matching parts of anti-leak oil-stain-preventing and apply its injection pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852708A (en) * | 2020-08-10 | 2020-10-30 | 上海夏雪科技有限公司 | Fuel injection pumps, injectors, fuel injection systems and internal combustion engines |
| CN113659780A (en) * | 2021-10-19 | 2021-11-16 | 浙江零跑科技股份有限公司 | Oil-cooled motor capable of preventing bearing from electric corrosion |
| CN113659780B (en) * | 2021-10-19 | 2022-01-14 | 浙江零跑科技股份有限公司 | Oil-cooled motor capable of preventing bearing from electric corrosion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180720 Address after: 300000 2 Yulong Road, automobile industrial park, Wuqing District, Tianjin Applicant after: North oil electronic control fuel injection system (Tianjin) Co., Ltd. Address before: No. 3, Cheng Zhuang Road, Fengtai District, Beijing Applicant before: Beijing Yaxin Ketianwei Oil Pume Nozzle Tip Co., Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170315 |