CN110360041A - A kind of novel fuel pump for preventing oil sealing from leaking and detecting oil seal failure - Google Patents
A kind of novel fuel pump for preventing oil sealing from leaking and detecting oil seal failure Download PDFInfo
- Publication number
- CN110360041A CN110360041A CN201910729274.7A CN201910729274A CN110360041A CN 110360041 A CN110360041 A CN 110360041A CN 201910729274 A CN201910729274 A CN 201910729274A CN 110360041 A CN110360041 A CN 110360041A
- Authority
- CN
- China
- Prior art keywords
- check valve
- oil
- valve body
- cracking pressure
- spring
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 30
- 239000000446 fuel Substances 0.000 title claims abstract description 8
- 239000003921 oil Substances 0.000 claims abstract description 38
- 238000005336 cracking Methods 0.000 claims abstract description 37
- 239000000295 fuel oil Substances 0.000 claims abstract description 25
- 239000010721 machine oil Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 238000005056 compaction Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 abstract description 2
- 238000010304 firing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
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
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- 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
-
- 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
- F02M59/46—Valves
- F02M59/462—Delivery valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A kind of novel fuel pump for preventing oil sealing from leaking and detecting oil seal failure, the present invention apply to prevent oil sealing Micro blazed-grating in diesel engine fuel-firing lubrication high-pressure pump and can effectively detect whether oil sealing fails.The present invention is by support plate, camshaft, machine oil envelope, fuel oil envelope, leak detection channel, low cracking pressure check valve and its forms confined space and forms.The machine oil envelope, fuel oil envelope are installed in support plate；Camshaft is installed on machine oil envelope and fuel oil envelope is internal；Leak detection channel is support plate inner passage；Low cracking pressure check valve is installed in leak detection channel；The low cracking pressure check valve includes compaction plug, check valve body, spring base, spring, steel ball.The present invention, which has, realizes the technical characterstics such as No leakage and detection oil sealing inner excess pressure.
Description
Technical field
The present invention relates to diesel engine high-pressure co-rail fuel oil pump technical field, specifically one kind prevents oil sealing from leaking and visiting
Survey the novel fuel pump of oil seal failure.
Background technique
As increasingly maturation, requirement of the market to engine of diesel engine industry are higher and higher.According to atmosphere dirt
The requirement of anti-therapy is contaminated, from January 1st, 2019, whole nation major part provinces and cities executed six discharge standard of diesel vehicle state, to starting
The emission request of machine further increases.Engine motor oil, which mixes, will lead to the deterioration for starting discharge in fuel oil, while fuel oil mixes
Also oil lubricating is influenced in machine oil.Therefore fuel oil lubrication high-pressure pump design in be all made of double oil seal design, guarantee machine oil and
Fuel oil is effectively sealed, and is prevented mutually mixed.There are detection channels among two oil sealings for needs simultaneously, can find oil in time
The failure of envelope.But oil sealing can only accomplish theoretical zero leakage, there is always a certain proportion of Micro blazed-gratings in practice.Therefore two
A small amount of oil droplet is often had in detection channels among a oil sealing to drip along channel, leads to the pollution of engine appearance.Therefore it sets
It counts one kind effectively prevention oil sealing Micro blazed-grating simultaneously and the design that can detect oil seal failure is very important.
Summary of the invention
The present invention be it is a kind of prevent oil sealing leak and detection oil seal failure novel fuel pump, including support plate, camshaft,
Machine oil seals, fuel oil seals, the confined space in leak detection channel and low cracking pressure check valve and its composition；The machine oil envelope, combustion
Oil sealing is installed in support plate；The camshaft is installed on machine oil envelope and fuel oil envelope is internal；The leak detection channel is support
Intralamellar part channel；The low cracking pressure check valve is installed in leak detection channel.
Further, the low cracking pressure check valve includes compaction plug, check valve body, spring base, spring, steel ball；Institute
It states compaction plug and is installed on check valve body oral area, when installing low cracking pressure check valve, by between compaction plug and check valve body
Magnitude of interference makes check valve body extend out deformation, so that check valve body and support plate is inlayed fixation, and guarantee outside low cracking pressure check valve
The sealing of diameter and support plate；The spring base is installed on individual event valve inner, by transition fit and the dual fixation of riveting, prevents
The two loosens；The spring and steel ball are located among spring base and check valve body, and steel ball contacts close with check valve body sealing cone
Envelope, spring acts on steel ball, since the effect steel ball of spring force is contacted with check valve body sealing cone always, when pressure is less than bullet
When spring active force, low cracking pressure check valve is constantly in closed state, the low cracking pressure when pressure is greater than acting force of the spring
Check valve is in the open state.
The machine oil envelope and fuel oil, which are enclosed in when high-pressure pump works normally, can effectively seal machine oil and fuel oil；When machine oil envelope or
Fuel oil is sealed up for safekeeping in Micro blazed-grating, and the pressure that will lead to confined space slightly rises, to make oil is more difficult to leak out, simultaneously
The pressure of confined space is lower than the cracking pressure of low cracking pressure check valve, therefore low cracking pressure check valve cannot be turned on, because
The oil of this leakage can not be flowed to outside oil pump due to the effect of low cracking pressure check valve.But machine oil envelope or the raw mistake of fuel oil seal
When effect, has a large amount of oil and revealed from oil sealing, while pressure is greater than the cracking pressure of low cracking pressure check valve, the oil of leakage
It can be flowed out from low cracking pressure check valve, so as to be detected easily.Therefore while achievable No leakage of the invention again
Oil seal failure can be detected.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the low cracking pressure one-way valve structures schematic diagram of the present invention.
Specific embodiment
With reference to Fig. 1 and 2；It is a kind of to prevent oil sealing from leaking and the novel fuel pump of detection oil seal failure including support plate 1, convex
Wheel shaft 2, machine oil envelope 3, fuel oil seal 4, leak detection channel 5, low cracking pressure check valve 6；The machine oil envelope 3,4 installation of fuel oil envelope
In support plate 1；The camshaft 2 is installed on inside machine oil envelope 3 and fuel oil envelope 4, and is passed through in machine oil envelope 3 and fuel oil envelope 4
Between；The leak detection channel 5 is 1 inner passage of support plate；The low cracking pressure check valve 6 is installed on leak detection channel
In 5；The low cracking pressure check valve 6 includes compaction plug 7, check valve body 8, spring base 9, spring 10, steel ball 11.
The low cracking pressure check valve 6 includes compaction plug 7, check valve body 8, spring base 9, spring 10, steel ball 11；It is described
Compaction plug 7 is installed on 8 oral area of check valve body, when installing low cracking pressure check valve 6, by between compaction plug 7 and check valve body 8
Magnitude of interference so that check valve body 8 is extended out deformation, make check valve body 8 and support plate 1 inlay fixation, and guarantee that low cracking pressure is unidirectional
The sealing of valve 6 outer diameter and support plate 1；The spring base 9 is installed on inside individual event valve body 8, dual by transition fit and riveting
It is fixed, prevent the two from loosening；The spring 10 and steel ball 11 are located among spring base 9 and check valve body 8, steel ball 11 and check valve
The contact sealing of 8 sealing cone of body, spring 10 acts on steel ball 11, due to spring force effect steel ball 11 always with check valve body 8
Sealing cone contact, when pressure is less than 10 active force of spring, low cracking pressure check valve 6 is constantly in closed state, works as pressure
Low cracking pressure check valve 6 is in the open state when power is greater than 10 active force of spring.
The support plate 1, camshaft 2, machine oil envelope 3, fuel oil envelope 4, leakage path 5 and the formation of low cracking pressure check valve 6
Confined space；When machine oil envelope 3 or fuel oil envelope 4 are there are when Micro blazed-grating, the pressure that will lead to confined space slightly rises, to make
Oil is not easy to leak out again, while the pressure of confined space is lower than 10 active force of spring in check valve 6, therefore low cracking pressure list
It cannot be turned on to valve 6, therefore the oil leaked is since the effect of low cracking pressure check valve 6 can not flow to outside oil pump.But
When machine oil envelope 3 or fuel oil envelope 4 fail, has and revealed at a large amount of oily slave oil sealing 3 or fuel oil envelope 4, while pressure is greater than
10 active force of spring in check valve 6, causes steel ball 11 to be lifted, and separates with 8 sealing cone of check valve body, therefore the oily meeting revealed
It is flowed out from low cracking pressure check valve 6, so as to be detected easily.
Claims (2)
1. a kind of prevent oil sealing from leaking and the novel fuel pump of detection oil seal failure, it is characterised in that: including support plate (1), convex
Wheel shaft (2), machine oil envelope (3), fuel oil seal the close of (4), leak detection channel (5) and low cracking pressure check valve (6) and its composition
Close space；The machine oil envelope (3), fuel oil envelope (4) are installed in support plate (1)；The camshaft (2) is installed on machine oil envelope (3)
It is internal with fuel oil envelope (4)；The leak detection channel (5) is support plate inner passage；Low cracking pressure check valve (6) peace
Loaded in leak detection channel.
2. a kind of novel fuel pump for preventing oil sealing from leaking and detecting oil seal failure according to claim 1, feature exist
In: the low cracking pressure check valve (6) includes compaction plug (7), check valve body (8), spring base (9), spring (10), steel ball
(11)；The compaction plug (7) is installed on check valve body (8) oral area and passes through compaction plug when installing low cracking pressure check valve (6)
(7) magnitude of interference between check valve body (8) makes check valve body (8) extend out deformation, inlays check valve body (8) and support plate (1)
Build-in is fixed, and guarantees the sealing of low cracking pressure check valve (6) outer diameter and support plate (1)；The spring base (9) is installed on individual event
Valve body (8) is internal, by transition fit and the dual fixation of riveting, prevents the two from loosening；The spring (10) and steel ball (11) position
Intermediate in spring base (9) and check valve body (8), steel ball (11) contacts sealing with check valve body (8) sealing cone, and spring (10) is made
For steel ball (11), since the effect steel ball (11) of spring force is contacted with check valve body (8) sealing cone always, when pressure is less than
When spring (10) active force, low cracking pressure check valve (6) is constantly in closed state, when pressure is greater than spring (10) active force
When low cracking pressure check valve (6) it is in the open state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729274.7A CN110360041A (en) | 2019-08-08 | 2019-08-08 | A kind of novel fuel pump for preventing oil sealing from leaking and detecting oil seal failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729274.7A CN110360041A (en) | 2019-08-08 | 2019-08-08 | A kind of novel fuel pump for preventing oil sealing from leaking and detecting oil seal failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110360041A true CN110360041A (en) | 2019-10-22 |
Family
ID=68222368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910729274.7A Pending CN110360041A (en) | 2019-08-08 | 2019-08-08 | A kind of novel fuel pump for preventing oil sealing from leaking and detecting oil seal failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110360041A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8602943D0 (en) * | 1985-02-22 | 1986-03-12 | Diesel Kiki Co | Fuel injection pump |
| CN201013504Y (en) * | 2006-12-07 | 2008-01-30 | 亚新科南岳（衡阳）有限公司 | Diesel engine fuel injection electric control unit pump |
| CN102003319A (en) * | 2010-11-19 | 2011-04-06 | 亚新科南岳（衡阳）有限公司 | High-pressure fuel feed pump for high-pressure common-rail fuel injection system |
| CN202348506U (en) * | 2011-12-13 | 2012-07-25 | 湖南机油泵股份有限公司 | Fuel oil feeding pump with check valve and safety valve |
| CN203374412U (en) * | 2013-08-14 | 2014-01-01 | 北京亚新科天纬油泵油嘴股份有限公司 | Fuel return system of high pressure common rail pump |
| CN205955982U (en) * | 2016-08-09 | 2017-02-15 | 成都威特电喷有限责任公司 | String seal structure is prevented to diesel engine petroleum pump assembly machine diesel oil |
| CN206440439U (en) * | 2017-02-08 | 2017-08-25 | 思达耐精密机电（常熟）有限公司 | A kind of trace detection mechanism of high voltage common rail pump shaft end fuel blow |
| CN208295126U (en) * | 2018-04-19 | 2018-12-28 | 宝沃汽车（中国）有限公司 | Oil-sealing arrangement and engine |
| CN210948962U (en) * | 2019-08-08 | 2020-07-07 | 思达耐精密机电（常熟）有限公司 | Novel fuel pump for preventing oil seal leakage and detecting failure of oil seal |
-
2019
- 2019-08-08 CN CN201910729274.7A patent/CN110360041A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8602943D0 (en) * | 1985-02-22 | 1986-03-12 | Diesel Kiki Co | Fuel injection pump |
| CN201013504Y (en) * | 2006-12-07 | 2008-01-30 | 亚新科南岳（衡阳）有限公司 | Diesel engine fuel injection electric control unit pump |
| CN102003319A (en) * | 2010-11-19 | 2011-04-06 | 亚新科南岳（衡阳）有限公司 | High-pressure fuel feed pump for high-pressure common-rail fuel injection system |
| CN202348506U (en) * | 2011-12-13 | 2012-07-25 | 湖南机油泵股份有限公司 | Fuel oil feeding pump with check valve and safety valve |
| CN203374412U (en) * | 2013-08-14 | 2014-01-01 | 北京亚新科天纬油泵油嘴股份有限公司 | Fuel return system of high pressure common rail pump |
| CN205955982U (en) * | 2016-08-09 | 2017-02-15 | 成都威特电喷有限责任公司 | String seal structure is prevented to diesel engine petroleum pump assembly machine diesel oil |
| CN206440439U (en) * | 2017-02-08 | 2017-08-25 | 思达耐精密机电（常熟）有限公司 | A kind of trace detection mechanism of high voltage common rail pump shaft end fuel blow |
| CN208295126U (en) * | 2018-04-19 | 2018-12-28 | 宝沃汽车（中国）有限公司 | Oil-sealing arrangement and engine |
| CN210948962U (en) * | 2019-08-08 | 2020-07-07 | 思达耐精密机电（常熟）有限公司 | Novel fuel pump for preventing oil seal leakage and detecting failure of oil seal |
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