CN104806406B - The electromechanical combined formula high-pressure oil pump of closed type - Google Patents
The electromechanical combined formula high-pressure oil pump of closed type Download PDFInfo
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- CN104806406B CN104806406B CN201510212719.6A CN201510212719A CN104806406B CN 104806406 B CN104806406 B CN 104806406B CN 201510212719 A CN201510212719 A CN 201510212719A CN 104806406 B CN104806406 B CN 104806406B
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- draining cone
- draining
- spring
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Abstract
It is an object of the invention to provide the electromechanical combined formula high-pressure oil pump of closed type, including roller plunger, closed type fuel regulator valve and delivery valve.Roller plunger is arranged on pump housing bottom, is made up of roller, plunger, plunger spring, gear ring, ratch, fuel feed hole, spill port and plunger cavity, helicla flute is wherein designed with plunger.Closed type fuel regulator valve is arranged on above plunger, including magnetic valve, magnetic valve valve rod, magnetic valve spring, draining cone valve branch sleeve, draining cone valve, draining cone valve valve rod and draining cone valve spring.Closed type fuel regulator valve is closed mode when electric on not, and after upper electricity, draining cone valve opens draining oil circuit.Present invention improves the reliability of the engine hydraulic systems such as high-pressure oil pump, fuel injector, improves the stability that engine is run.The fuel feeding moment, supply time and fuel delivery needs that engine is different under different operating modes, different load can be realized by the size and form that change fuel oil control magnetic valve electromagnetic force.
Description
Technical field
The present invention relates to a kind of fueling injection equipment, specifically engine fueling injection equipment.
Background technology
The problem of today's society mankind face two are serious is energy scarcity and environmental pollution, and engine is due to its power
Greatly, long lifespan and it is widely used in Living Industry the characteristics of good power performance.But conventional art engine is due to its high consumption
Can, maximum discharge the shortcomings that be gradually eliminated, and study it is a kind of consume energy less, the good engine of efficiency high, discharge performance turns into and started
Machine develops inexorable trend.In recent years, the engine technology innovation that develops into of electron controls technology provides technical guarantee, engine
Electric control fuel system turns into the Main Means for solving engine problem.Electrocontrolled high-pressure oil pump is a kind of important technological means,
It is a kind of time-based control fuel injection system that disclosure satisfy that engine emission regulation and cost-effectiveness requirement, has oil spout pressure
The features such as power is high, injection timing is flexible adjustable.
Traditional Electrocontrolled high-pressure oil pump promotes plunger pressurization fuel oil, normally open type magnetic valve control fuel oil draining and confession using roller
The mode of oil.Plunger only completes the work of fuel oil pressurization, and when normally open type magnetic valve is not upper electric, draining oil circuit is in normally opened shape
State, the fuel oil in high-pressure oil pump flow back to fuel tank by draining oil circuit；After electricity on magnetic valve, draining is closed by electromagnetic force
Oil circuit, the fuel oil after plunger pressurization flow to fuel injector through normally open valve.But common open type Electrocontrolled high-pressure oil pump is present as follows not
Foot：First, when the failure magnetic valves such as engine generation power down can not go up electricity, high-pressure oil pump draining oil circuit is in normally open,
High-pressure oil pump can not complete emergent fuel feeding work；Second, when magnetic valve it is stuck in off position when, oil pressure can constantly rise in valve
Height, magnetic valve and fuel injector are had undesirable effect, cause other hydraulic means such as fuel injector to be destroyed；Third, magnetic valve
Any failure of generation but when remaining to fuel feeding, high-pressure oil pump can not complete the regulation to fuel feeding moment and fuel delivery.In a word, tradition electricity
It is poor to control high-pressure oil pump security, does not possess the ability that emergency reaction is made to failure, engine job stability, peace can not be met
The requirement of full property.
The content of the invention
It is an object of the invention to provide high to improve the electromechanical combined formula of the closed type of engine stabilization and reliability
Pressure oil pump.
The object of the present invention is achieved like this：
The electromechanical combined formula high-pressure oil pump of closed type of the present invention, it is characterized in that：Controlled including roller plunger, closed type fuel oil
Valve, delivery valve；Roller plunger includes the pump housing, plunger bushing, housing, plunger, roller, and plunger bushing is arranged in housing, and the pump housing is set
Below housing, the plunger of plunger spring is cased with, its upper part is located in plunger bushing, and its underpart is located in the pump housing, plunger bullet
Spring upper end is withstood on plunger bushing, and plunger spring lower end is withstood in the pump housing, and inner walls set ratch, and plunger bushing outer wall is set and tooth
Plunger cavity is formed between the plunger jacket wall of the gear ring that bar is engaged, plunger and its upper end, fuel feed hole, spill port are set on plunger bushing
And first oil circuit, control plunger cavity and the helicla flute of spill port switching are set in the side wall in its upper end portion；Closed type fuel oil
Control valve includes application valve body, electromagnetic valve body, magnetic valve valve rod, draining cone valve, draining cone valve valve rod, application valve body and magnetic valve
Body is arranged in juxtaposition, and draining cone valve, draining cone valve valve rod are arranged in application valve body, and electromagnetic valve body is connected by magnetic valve valve rod
The first end of draining cone valve, the second end of draining cone valve is tapered end face, and tapered end face coordinates with its other application valve body, draining
Cone valve valve rod first end connects the second end of draining cone valve, and the second end of draining cone valve valve rod withstands in draining cone valve spring, let out
Oily cone valve spring is withstood on its other application valve body, and magnetic valve spring is provided with magnetic valve valve rod, is connected at magnetic valve spring
Spill port, the second oil circuit communicated with the first oil circuit is set in application valve body, and draining cone valve valve rod intersects with the second oil circuit；
Delivery valve includes the high-pressure oil pipe connector and oil outlet valve spring arranged up and down, and the second oil circuit connects high pressure by oil outlet valve spring
Oil pipe connector.
The present invention can also include：
1st, the part intersected on draining cone valve valve rod with the second oil circuit sets the first compression face and the second compression face respectively, the
One compression face and the second compression face are located at the draining cone valve side and draining cone valve spring side of the second oil circuit respectively, first by
The area of pressure surface is not less than 1.2 times of the second compression face area.
Advantage of the invention is that：Tradition Electrocontrolled high-pressure oil pump open in usual closes draining oil by solenoid valve control gate gurgle valve
At the time of road and the time realizes the control to fuel feeding moment and fuel delivery, but it has engine and occurred after the failures such as power down not
The shortcomings that energy normal work.The present apparatus can be good at solving this problem：The fuel regulator valve of the present apparatus is closed type control valve,
When magnetic valve is not upper electric, draining cone valve is closed, at the time of opening draining oil circuit by solenoid valve control draining cone valve
The control to fuel feeding moment and fuel delivery is realized with the time.In normal work, the present apparatus can fast and accurately control combustion
Circulating rate and currency of the oil by fuel regulator valve, can be real by changing solenoid valve control mode and control signal form
Now to the flexible control of fuel feeding moment under different operating modes, different load and fuel delivery.Meanwhile the closed type gate gurgle valve of the present apparatus exists
It is closed in the case of solenoid valve failure, high-pressure oil pump remains able to continue to complete the function of fuel feeding.In solenoid valve failure
When, the present apparatus under ratch effect, pass through the relative position that gear ring pulls revolution sleeve control column plug helicla flute and oil inlet and oil return hole
Put the control realized to fuel feeding moment and fuel delivery.In order to improve the security of fuel regulator valve, the design of present apparatus draining cone valve
There is safeguard measure, when magnetic valve, which breaks down, to go up electricity, or event occurs for the hydraulic means such as fuel injector of connection high-pressure oil pump
During barrier, draining cone valve, which is in normally off, can cause pressure in normally closed solenoid valve constantly to raise, but in the presence of safeguard measure,
Draining cone valve can open draining oil circuit, fuel oil is flowed back to low-pressure reservoir, reduce the fuel pressure in whole system, protect Fuel System
The safety of system.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the roller switch plunger structure diagram of the present invention；
Fig. 3 a are the closed type fuel regulator valve structural representation of the present invention, and Fig. 3 b are Fig. 3 a partial schematic diagram；
Fig. 4 is the delivery valve structure schematic diagram of the present invention.
Embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
With reference to Fig. 1~4, the present apparatus forms including roller plunger 1, closed type fuel regulator valve 2 and delivery valve 3.Roller post
Plug 1 is arranged on the bottom of the pump housing 4, by roller 5, plunger 6, plunger spring 7, gear ring 8, the fuel feed hole 10 of ratch 9, spill port 11 and plunger
Chamber 12 forms.The top of plunger cavity 12 is provided with closed type fuel regulator valve, including magnetic valve 13, magnetic valve valve rod 14, electromagnetism
Valve spring 15, draining cone valve branch sleeve 16, draining cone valve 17, draining cone valve valve rod 18 and draining cone valve spring 19.Delivery valve 5
Installed in the top of the pump housing 1, it is made up of oil outlet valve spring 22 and high-pressure oil pipe connector 23.
During magnetic valve normal work, fuel oil enters plunger cavity 12 by fuel feed hole 10, and cam pushing rolling wheels 5 make plunger 6 up,
After closing fuel feed hole 10, the fuel oil in compression plunger chamber 12, force feed function is completed.Closed type fuel regulator valve 2 includes magnetic valve
13rd, magnetic valve valve rod 14, magnetic valve spring 15, draining cone valve branch sleeve 16, draining cone valve 17, draining cone valve valve rod 18 and let out
Oily cone valve spring 19.Magnetic valve 13 is arranged on the high order end of closed type fuel regulator valve 2, and it passes through magnetic valve valve with draining cone valve 17
Bar 14 is connected with the interference fit of draining cone valve branch sleeve 16 on the top of draining cone valve valve rod 18.Closed type fuel regulator valve 2
When magnetic valve 13 is upper electric, spring force F1 that draining cone valve 17 is transmitted by magnetic valve spring 15 by magnetic valve valve rod 14 is let out
The spring force F2 that oily cone valve spring 19 is acted on draining cone valve valve rod 18, and fuel pressure P.Magnetic valve spring 15 and draining
Cone valve spring 19 is in compressive state, because the pretightning force F1 of magnetic valve spring 15 is more than the pretightning force F2 of draining cone valve spring 19,
That is F1＞ F2, so draining cone valve 17 is landed on the conical surface, the draining oil circuit of closed type fuel regulator valve 2 is in normally off, post
Fuel oil in plug chamber 12 after the compression of plunger 6 flow to delivery valve 3 by oil circuit L2.When fuel pressure P is more than oil outlet valve spring 22
Initial tension of spring when, fuel oil passes through the high-pressure oil pipe that is connected with high-pressure oil pipe interface 23 and enters fuel injector.When on magnetic valve 13
When electric, draining cone valve 17 is by electromagnetic force F3, the spring force F1 of magnetic valve spring 15, draining cone valve spring 19 caused by magnetic valve 13
Spring force F2 and fuel pressure P make a concerted effort, electromagnetic force F3, the spring force F2 of draining cone valve spring 19 make a concerted effort be more than magnetic valve spring
15 spring force F1 to the right, i.e. F3+F2＞ F1, the pulling draining of magnetic valve valve rod 14 cone valve 17, which lifts, opens draining oil circuit L1, fuel oil
Low-pressure reservoir, high-pressure oil pump fuel cut-off are flowed back to through spill port 11 by L1.
Normally off is in when draining cone valve 17 when the failure magnetic valves 13 such as power down can not go up electricity occurs for engine, still can
The effect of fuel feeding is enough continued to complete, the reliability of fuel system can be improved, improves engine job stability.Meanwhile hydraulic oil
Pump can complete the control to fuel feeding by mechanical ratch plunger.When roller 5 promotes plunger 6 to move upwards, the top of plunger 6
Start the fuel oil that pressurizes after the fuel feed hole 10 that edge is closed on plunger guide bush, when plunger 6 continues rise, the helicla flute of plunger 6 is opened back
Oilhole 11, under high pressure fuel oil flow back to fuel tank from plunger cavity 12.By pulling ratch 9, gear ring 8 is set to drive plunger revolution sleeve
Rotary plunger 6, the time that the helicla flute of plunger 6 opens spill port 11 can be changed, and then change fuel feeding finish time, completed to fuel feeding
Time and the regulation of fuel delivery.
When the magnetic valve 13 of closed type fuel regulator valve 2, which breaks down, to work, draining oil circuit can not be opened, fuel oil
Fuel injector is constantly flowed into by oil-feed oil circuit, causes other hydraulic means fuel pressures such as closed type fuel regulator valve and fuel injector
Constantly rise, may be damaged to fuel system and engine.In order to solve this problem, the control of present apparatus closed type fuel oil
Valve 2 is designed with safety guard.The fuel pressure compression face of draining cone valve 17 is made up of compression face 20 and compression face 21.Passing
In the fuel regulator valve open in usual of system, the two compression face areas are identical, and draining cone valve is by the hydraulic coupling balanced.Closed type is fired
Fuel path at the draining conical surface is designed as stairstepping by oil control valve, is increased the area of compression face 20, is made itself and compression face
The area ratio of 21 area is more than 1.2.Pressure F at compression face 2020＞ 1.2F21, when fuel pressure increases to a certain extent
When, F20+F2＞ F21+F1, it will open draining cone valve 17, fuel oil flows back into low-pressure reservoir through draining oil circuit, makes in system
Fuel pressure reduces, and protects the safety of normally close valve and other hydraulic means.
A kind of electromechanical combined formula high-pressure oil pump of closed type of the present invention, including roller plunger 1, the and of closed type fuel regulator valve 2
Delivery valve 3.The electromechanical combined formula high-pressure oil pump of closed type, its bottom of pump housing 4 installation roller plunger 1, by roller 5, plunger 6,
Plunger spring 7, gear ring 8, ratch 9, fuel feed hole 10, spill port 11 and plunger cavity 12 are formed, and helicla flute is wherein designed with plunger.
Installation closed type fuel regulator valve 2 above roller plunger, the top of the pump housing 4 installation delivery valve.Closed type fuel regulator valve 2 can be to height
Pressure oil pump carries out Electromagnetic Control, and when Electromagnetic Control breaks down, roller plunger can carry out Mechanical course to high-pressure oil pump.It is described
Closed type fuel regulator valve, including：Magnetic valve 13, magnetic valve valve rod 14, magnetic valve spring 15, draining cone valve branch sleeve 16,
Draining cone valve 17, draining cone valve valve rod 18 and draining cone valve spring 19.Magnetic valve 13 passes through magnetic valve valve rod with draining cone valve 17
It is connected with the interference fit of draining cone valve branch sleeve 16.It is in normally off when upper electric, it is upper it is electric after by controlling draining to bore
Valve 17 opens draining oil circuit and completes draining.The closed type fuel regulator valve, fuel path is designed as ladder at its draining conical surface
Shape, the area of compression face 20 is increased, the area ratio of itself and the area of compression face 21 is more than 1.2.When fuel pressure is excessive, two
Hold different stress caused by different lifting surface areas to open draining cone valve and complete draining, protect security of system.
Claims (1)
1. the electromechanical combined formula high-pressure oil pump of closed type, it is characterized in that：Including roller plunger, closed type fuel regulator valve, delivery valve；
Roller plunger includes the pump housing, plunger bushing, housing, plunger, roller, and plunger bushing is arranged in housing, and the pump housing is arranged on below housing,
The plunger of plunger spring is cased with, its upper part is located in plunger bushing, and its underpart is located in the pump housing, and plunger spring upper end withstands on post
On plug sleeve, plunger spring lower end is withstood in the pump housing, and inner walls set ratch, and plunger bushing outer wall sets the tooth being engaged with ratch
Circle, plunger cavity is formed between plunger and the plunger jacket wall of its upper end, fuel feed hole, spill port and the first oil are set on plunger bushing
Road, control plunger cavity and the helicla flute of spill port switching are set in the side wall in its upper end portion；Closed type fuel regulator valve includes
Application valve body, electromagnetic valve body, magnetic valve valve rod, draining cone valve, draining cone valve valve rod, application valve body and electromagnetic valve body cloth arranged side by side
Put, draining cone valve, draining cone valve valve rod are arranged in application valve body, and electromagnetic valve body connects draining cone valve by magnetic valve valve rod
First end, the second end of draining cone valve is tapered end face, and tapered end face coordinates with its other application valve body, draining cone valve valve rod
First end connects the second end of draining cone valve, and the second end of draining cone valve valve rod is withstood in draining cone valve spring, draining cone valve bullet
Spring is withstood on its other application valve body, and magnetic valve spring is provided with magnetic valve valve rod, spill port, control are connected at magnetic valve spring
The second oil circuit communicated with the first oil circuit is set in valve body processed, and draining cone valve valve rod intersects with the second oil circuit；Delivery valve bag
The high-pressure oil pipe connector and oil outlet valve spring arranged up and down are included, the second oil circuit connects high-pressure oil pipe by oil outlet valve spring and connected
Mouthful；
The part intersected on draining cone valve valve rod with the second oil circuit sets the first compression face and the second compression face respectively, and first is pressurized
Face and the second compression face are located at the draining cone valve side and draining cone valve spring side of the second oil circuit respectively, the first compression face
Area is not less than 1.2 times of the second compression face area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510212719.6A CN104806406B (en) | 2015-04-30 | 2015-04-30 | The electromechanical combined formula high-pressure oil pump of closed type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510212719.6A CN104806406B (en) | 2015-04-30 | 2015-04-30 | The electromechanical combined formula high-pressure oil pump of closed type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104806406A CN104806406A (en) | 2015-07-29 |
| CN104806406B true CN104806406B (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510212719.6A Active CN104806406B (en) | 2015-04-30 | 2015-04-30 | The electromechanical combined formula high-pressure oil pump of closed type |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351129A (en) * | 2015-11-25 | 2016-02-24 | 哈尔滨工程大学 | Normally-closed type heavy-oil single-valve electronic unit pump |
| CN105332833A (en) * | 2015-11-25 | 2016-02-17 | 哈尔滨工程大学 | Normally-closed bivalve electronic-controlled fuel injection system for heavy oil |
| CN106523228B (en) * | 2016-12-31 | 2022-07-12 | 南岳电控（衡阳）工业技术股份有限公司 | Low-power diesel generator fuel injection electronic unit pump |
| CN111989478B (en) * | 2018-04-26 | 2022-04-05 | 日立安斯泰莫株式会社 | High-pressure fuel supply pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2804415Y (en) * | 2004-12-08 | 2006-08-09 | 成都威特电喷有限责任公司 | Diesel jetting device of electrical controlled combined pump |
| CN101806266A (en) * | 2010-03-04 | 2010-08-18 | 哈尔滨工程大学 | Double-valve fuel injecting device with electric-control monoblock pump and electric-control fuel injector |
| CN104093969A (en) * | 2012-02-27 | 2014-10-08 | 日立汽车系统株式会社 | High-pressure fuel supply pump comprising electromagnetic drive-type suction valve |
| CN204677346U (en) * | 2015-04-30 | 2015-09-30 | 哈尔滨工程大学 | The electromechanical combined formula high pressure oil pump of normal close type |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6598579B2 (en) * | 2001-01-08 | 2003-07-29 | Diesel Technology Company | Fuel injection pump for an internal combustion engine |
-
2015
- 2015-04-30 CN CN201510212719.6A patent/CN104806406B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2804415Y (en) * | 2004-12-08 | 2006-08-09 | 成都威特电喷有限责任公司 | Diesel jetting device of electrical controlled combined pump |
| CN101806266A (en) * | 2010-03-04 | 2010-08-18 | 哈尔滨工程大学 | Double-valve fuel injecting device with electric-control monoblock pump and electric-control fuel injector |
| CN104093969A (en) * | 2012-02-27 | 2014-10-08 | 日立汽车系统株式会社 | High-pressure fuel supply pump comprising electromagnetic drive-type suction valve |
| CN204677346U (en) * | 2015-04-30 | 2015-09-30 | 哈尔滨工程大学 | The electromechanical combined formula high pressure oil pump of normal close type |
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| CN104806406A (en) | 2015-07-29 |
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