CN202545082U - Hydraulic control valve - Google Patents
Hydraulic control valve Download PDFInfo
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- CN202545082U CN202545082U CN2011205529066U CN201120552906U CN202545082U CN 202545082 U CN202545082 U CN 202545082U CN 2011205529066 U CN2011205529066 U CN 2011205529066U CN 201120552906 U CN201120552906 U CN 201120552906U CN 202545082 U CN202545082 U CN 202545082U
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Abstract
The utility model discloses a hydraulic control valve, in particular relates to application of a high pressure fuel supply pump of gasoline direct injection. The hydraulic control valve comprises a fuel supplying part 3, a fuel safety part 4, a fuel supply channel 5, a fuel safety channel 6 and the like, and is characterized in that the fuel safety part 4 is arranged in the fuel safety channel 6; the fuel supplying part 3 is arranged in the fuel supply channel 5; and the fuel supplying part 3 is arranged in the fuel safety part 4. By the hydraulic control valve, the fuel safety part is ingeniously combined with the fuel supplying part, so that the safety problem of the fuel system under high pressure is solved, the aim of directly returning fuel oil to a pressurizing cavity at abnormal temperature is fulfilled, and the separately-designed fuel safety channel is not needed; and therefore, the high pressure fuel supply pump has a compact and simple structure, and is convenient to design and maintain.
Description
Technical field
The present invention relates to a kind of fluid-controlled valve, particularly relate to a kind of fluid-controlled valve of using on the high-pressure fuel feed pump of direct spray petrol engine in cylinder of being used for.
Background technique
Because environmental pollution is serious day by day; Energy crisis grows in intensity; Thereby use that low to pollute energy-saving engine be national governments and professional person's target always, people when pursuing vehicle gasoline engine good dynamics property to the fuel economy and the more and more high requirement of discharging proposition of petrol engine.The fast development of electron controls technology and measuring technology; Make the high performance petrol engine of exploitation become possibility; Direct spray petrol engine in cylinder (GDI; Gasoline Direct Injection) motor combines the advantage of compression ignition engine and spark-ignition engine; Modes such as air motion through in the inner cylinder direct injection of fuel oil, variable injection timing and the control cylinder have realized the lean combustion in the cylinder, make motor still all show bigger potentiality at aspects such as reducing discharging at fuel economy, become crucial developing direction of vehicle gasoline engine.
Wherein, thereby in order to make oil sprayer oil spout particle diameter reduce to reach the promotion fuel combustion, realize the purpose of low oil consumption and low emission, we need seek the method for fuel high pressureization.In jet pressure raising process gradually, oil-fired system safety problem under high pressure is badly in need of solving; Solution commonly used is to be specifically designed to the safety valve that reduces pressure under the abnormal pressure situation in setting on fuel oil track or the high-pressure service pump.On fuel rail, be provided with in the mode of safety valve, the high pressure fuel of discharge is directly got back to the low pressure oil circuit, with causing more energy loss.A kind of high-pressure fuel feed pump is disclosed in the TOHKEMY JP2003343395 communique; On the pump case of high-pressure fuel feed pump, be provided with the fuel security path of the low-pressure fuel path at the high pressure fuel passage that connects the injection valve downstream and the suction valve upper reaches, have as only being permitted the safety valve that fuel leads to from high pressure fuel passage one side direction low-pressure fuel path one effluent in the set inside of this fuel security path.Though this scheme has solved the energy loss problem that high pressure fuel is directly got back to the low pressure oil circuit, the safety valve that is provided with need increase a whole set of component and realize corresponding function, has increased the structural complexity of whole high-pressure fuel feed pump; Simultaneously, in the original just compact pump housing, design a fuel escape way again and also have very big design difficulty; Newly-increased fuel security path has increased the high pressure volume of oil-fired system, can cause the compression efficiency of high-pressure fuel feed pump to reduce.
Summary of the invention
The objective of the invention is to above-mentioned existing technology present situation; A kind of fluid-controlled valve is provided; Fuel safety component and fuel are confessed parts to combine cleverly; Both can solve oil-fired system safety problem under high pressure, again the abnormal pressure fuel oil directly returned pressurizing chamber, and need not design independent fuel escape way.
The technological scheme that the present invention adopted provides a kind of fluid-controlled valve; Be installed in the pump housing 1 of high-pressure fuel feed pump; Comprise that fuel confesses parts 3, fuel safety component 4, fuel and confess passage 5 and fuel escape way 6 etc.; Described fuel safety component 4 is arranged in the described fuel escape way 6, and described fuel is confessed parts 3 and is arranged on described fuel and confesses in the passage 5, and fuel is confessed parts 3 and is arranged on fuel safety component 4 inside.
Can carry out favourable further optimization and improvement to the fluid-controlled valve that aforementioned schemes provides through following measure.Wherein:
According to a kind of favourable structure, be arranged on the operating pressure of the described fuel safety component 4 on the described fuel escape way 6, be configured to be higher than and be arranged on described fuel and confess the operating pressure that described fuel on the passage 5 is confessed parts 3.
According to the favourable structure of another kind; Described fuel safety component 4 is provided with the internal cavities that communicates with oil circuit; Described internal cavities is installed with moving direction and confesses the consistent described fuel of direction with fuel and confess parts 3, and the moving direction of described fuel safety component 4 and fuel are confessed in the opposite direction.
The technological scheme that the present invention adopted and the difference of existing technology are: fluid-controlled valve of the present invention is confessed parts with fuel, and to be arranged on the fuel safety component dexterously inner, solved need on the pump housing of compact dimensions, design fuel and confess the difficulty with two oil ducts of fuel safety return-flow; Fluid-controlled valve of the present invention is confessed parts with fuel safety component and fuel and is become one, and becomes a multipurpose multifunctional operating system, thereby has reduced the number of spare parts of high-pressure fuel feed pump; Fluid-controlled valve of the present invention is provided with pressure and regulates part, fuel can be set flexibly confess pressure and fuel safety return-flow pressure.
The present invention compares the beneficial effect that is had with existing technology: fluid-controlled valve provided by the present invention; Solved oil-fired system safety problem under high pressure; Both reach the purpose that the abnormal pressure fuel oil directly returns pressurizing chamber, need not design independent fuel escape way again, thereby made fuel supply pump structure in plateau compact more, simple; Design conveniently, keep in repair easier.
Description of drawings
Fig. 1 is to use the longitudinal section of the high-pressure fuel feed pump of fluid-controlled valve of the present invention.
Fig. 2 is the detail drawing of fluid-controlled valve of the present invention.
Fig. 3 is the longitudinal section that the fuel of fluid-controlled valve of the present invention is confessed parts.
Fig. 4 is the longitudinal section of fuel safety component when opening state of fluid-controlled valve of the present invention.
Fig. 5 is the three-dimensional view of the Safety valve body of fluid-controlled valve of the present invention.
Fig. 6 is that the fuel of fluid-controlled valve of the present invention is confessed the longitudinal section of parts when opening state.
Fig. 7 is the three-dimensional view that the fuel of fluid-controlled valve of the present invention is confessed spool.
Label declaration: 1. the pump housing, 2. the fuel pressure-producing part, 3. fuel confess parts, 4. the fuel safety component, 5. fuel confess passage, 6. the fuel escape way, 7. the adjustment pad, 8. pressurizing chamber, 9. fuel for export, 301. confess that valve seat, 302. fuel are confessed spool, 303. fuel are confessed spring, the tight seat of 401. valves, 402. emergency valve seats, 403. Safety valve bodies, 403a. pilot seal part, the fastening bounding means of 403b., 403c. insertion depth, 404. safety springs.
Embodiment
Can carry out favourable further optimization and improvement to the fluid-controlled valve that aforementioned schemes provides through following mode of execution.Wherein:
According to a kind of favourable structure, described fuel safety component 4 comprises: the tight seat 401 of valve, and the tight seat of this valve 401 1 ends are connected with the pump housing 1, the other end is connected with high-pressure oil pipe, and the tight seat 401 of this valve is formed with the fluid valve inner chamber tightly wherein of flowing through; Be formed at the emergency valve seat 402 on the tight seat of the valve inner chamber peripheral wall; Be arranged in the Safety valve body 403 of the tight seat of valve inner chamber; This Safety valve body 403 is removable between the primary importance and the second place; Safety valve body 403 closely contacts so that close described fuel escape way 6 with emergency valve seat 402 on this primary importance, and Safety valve body 403 is confessed direction against fuel and left emergency valve seat 402 so that open described fuel escape way 6 on this second place; Safety spring 404, axial clamp are pressed between the described pump housing 1 and the described Safety valve body 403, also press to emergency valve seat 402 to described Safety valve body 403.
According to the favourable structure of another kind, described fuel is confessed parts 3 and comprised: described Safety valve body 403, this Safety valve body 403 are formed with the fluid Safety valve body inner chamber wherein of flowing through; Be formed at and confess valve seat 301 on the Safety valve body inner chamber peripheral wall; The fuel that is arranged in the Safety valve body inner chamber is confessed spool 302; It is removable between the primary importance and the second place that this fuel is confessed spool 302; Fuel is confessed spool 302 and is closely contacted so that close described fuel and confess passage 5 with confessing valve seat 301 on this primary importance, and fuel is confessed spool 302 and confessed direction along fuel and leave and confess valve seat 301 and confess passage 5 so that open described fuel on this second place; Fuel is confessed spring 303, and axial clamp is pressed on described Safety valve body 403 and described fuel and confesses between the spool 302, and confesses spool 302 to described fuel and press to and confess valve seat 301.
According to the favourable structure of another kind; Described Safety valve body 403 is described fuel safety component 4 opening states when the described second place, and the bypass gap δ that limits between the tight seat of bypass gap γ, this Safety valve body 403 and the valve that limits between this Safety valve body 403 and the emergency valve seat 402 inner chamber, the tight seat of valve inner chamber remaining part form fuel escape way 6.
According to the favourable structure of another kind; It is that described fuel is confessed parts 5 opening states in the described second place that described fuel is confessed spool 302, and this fuel is confessed spool 302 and confessed between the valve seat 301 bypass gap α, this fuel of limiting and confess the bypass gap β, the Safety valve body inner chamber remaining part that limit between spool 302 and the Safety valve body inner chamber and form fuel and confess passage 5.
According to the favourable structure of another kind, the operating pressure of described fuel safety component 4 can be set through the thickness of the adjustment pad 7 of setting between the tight seat 401 of adjustment valve and the pump housing 1.
According to the favourable structure of another kind, described Safety valve body 403 comprises pilot seal part 403a and fastening bounding means 403b; Described fuel is confessed the operating pressure of parts 3, can set through the degree of depth 403c that adjusts the boss insertion pilot seal part on the fastening bounding means.
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
In Fig. 1, show the high-pressure fuel feed pump that uses fluid-controlled valve of the present invention with longitudinal section; In Fig. 2, show an embodiment of fluid-controlled valve of the present invention with the vertical profile enlarged view of part.This fluid-controlled valve is particularly related to and relates to a kind of fluid-controlled valve of using on the high-pressure fuel feed pump of direct spray petrol engine in cylinder of being used for.
At first, in conjunction with the formation and the function of the overall structure illustrative system of high-pressure fuel feed pump shown in Figure 1.
Fuel in the fuel tank extracts up through the low pressure oil transfer pump, is admitted to the pressurizing chamber 8 in the pump housing.When the plunger in the high-pressure fuel feed pump pressure-producing part 2 moves downward when promptly being in the oil suction operating mode, the volume of pressurizing chamber 8 increases, and the fuel pressure in the pressurizing chamber 8 descends, and fuel-flow control this moment solenoid valve is in open mode, and fuel gets into and also is full of pressurizing chamber 8.
Plunger is accomplished the oil suction operating mode; When getting into the compression operating mode; Begin to move upward, the volume of pressurizing chamber 8 is accompanied by the compression movement of plunger and reduces, if fuel-flow control this moment solenoid valve still stays open state; Fuel can pass through quantity control valve and the low pressure chamber returned, so the pressure of pressurizing chamber 8 can not rise.This operating mode is called the pretravel operating mode.
Under this state, if the fuel-flow control closed electromagnetic valve, then fuel suction port is closed, and the fuel pressures in this moment pressurizing chamber 8 rise along with moving upward of plunger together.Confess more than the operating pressure of parts 3 if reach fuel, then the fuel under high pressure in pressurizing chamber 8 is confessed parts 3 via fuel, is fed in the fuel common rail pipe.This operating mode is called as effective fuel feeding operating mode.So the compression operating mode of plunger (the rising operating mode between from the lower dead center to the top dead center) is made up of pretravel operating mode and effective fuel feeding operating mode.
And, through changing the close moment of fuel-flow control solenoid valve, can control the amount of the fuel under high pressure of confessing.If the fuel-flow control closed electromagnetic valve shifts to an earlier date constantly, the ratio of then compressing pretravel operating mode in the operating mode is little, and the ratio of effective delivery stroke is big.The fuel that promptly returns low pressure chamber tails off, and it is many that the fuel that high pressure is confessed becomes.On the other hand, if the fuel-flow control closed electromagnetic valve is postponed constantly, the ratio of then compressing pretravel operating mode in the operating mode is big, and the ratio of effective delivery stroke is little.The fuel that promptly returns low pressure chamber becomes many, and the fuel that high pressure is confessed tails off.The close moment of fuel-flow control solenoid valve is to control according to ECU.
Through above structure, through changing the close moment of fuel-flow control solenoid valve, the amount of the fuel that can high pressure be confessed is controlled to be the needed amount of internal-combustion engine.
Be provided with fuel in the outlet of pressurizing chamber 8 and confess parts 3.Fuel is confessed parts 3 and is had that the valve seat of confessing 301, fuel are confessed spool 302, fuel is confessed spring 303; 9 do not have under the state of fuel pressure difference for export at pressurizing chamber 8 and fuel, fuel is confessed spool 302 and is confessed at fuel to be pressed towards under the effect of spring 303 and confess valve seat 301 and be in closed condition.Become greater than fuel for export during 9 fuel pressure in the fuel pressure of pressurizing chamber 8; Fuel is confessed spool 302 and is begun to overcome fuel and confess the effect of spring 303 and open; Fuel in the pressurizing chamber 8 get into the fuel common rail pipe through fuel for export 9 and confess with high pressure.
On the fuel common rail pipe oil sprayer is installed, pressure transducer etc.Oil sprayer is decided according to the cylinder number of internal-combustion engine, under control unit of engine (ECU) control signal, fuel is sprayed in the cylinder.
On the pump housing 1 of high-pressure fuel feed pump, be provided with fuel escape way 6, in this escape way 6, be provided with fuel safety component 4, its fuel limitation flow can only be from fuel for export 9 flow to pressurizing chamber 8 direction.Fuel safety component 4 has emergency valve seat 402, Safety valve body 403, safety spring 404; Safety valve body 403 is pressed towards emergency valve seat 402 and is in closed condition under the effect of safety spring 404; If fuel for export 9 and the pressure difference of insurance between the passage 6 reach more than the authorized pressure; Then Safety valve body 403 leaves from emergency valve seat 402, thereby opens.
Because the failure and other reasons of oil sprayer; When fuel common rail pipe etc. has produced abnormal pressure; If the pressure reduction of insurance passage and pressurizing chamber reaches more than the fuel safety component operating pressure; Then the fuel safety component is opened, and the fuel that becomes abnormal pressure returns pressurizing chamber from the fuel escape way, reaches the purpose of high pressure parts such as protection fuel common rail pipe.
Below, in conjunction with the formation and the function of Fig. 2 to Fig. 7 further explain fluid-controlled valve.
Fluid-controlled valve of the present invention has fuel and confesses passage 5 and fuel escape way 6, and fuel is confessed passage 5 and is arranged on fuel escape way 6 inside; Fuel confess on passage 5 and the fuel escape way 6 relative set fuel confess parts 3 and fuel safety component 4, fuel is confessed in the internal cavities that parts 3 are installed in fuel safety component 4; Open for preventing to open by mistake simultaneously, the operating pressure of fuel safety component 4 is configured to be higher than the operating pressure that fuel is confessed parts 3; It is in the opposite direction that the moving direction of fuel safety component 4 and fuel are confessed parts 3; Wherein fuel is confessed parts 3 moving direction and fuel to confess direction consistent---towards fuel for export 9, the moving direction of fuel safety component 4 and fuel are confessed in the opposite direction by pressurizing chamber 8---by fuel for export 9 towards pressurizing chamber 8.
Fuel confesses that parts 3 comprise Safety valve body 403, confess valve seat 301, spool 302 confessed by fuel and fuel is confessed spring 303.Wherein Safety valve body 403 acts as a fuel and confesses the frame of parts 3, and this Safety valve body 403 runs through in central authorities and has inner periphery, and is formed with the fluid Safety valve body inner chamber wherein of flowing through.In Safety valve body 403, its inner chamber has formed near the peripheral wall of pressurizing chamber 8 and has confessed valve seat 301.The fuel that is roughly the ladder-type tubular is confessed spool 302 and is arranged in the Safety valve body inner chamber with the mode of inserting, and this fuel is confessed spool 302 and between the primary importance and the second place, can be moved axially; Fuel is confessed spool 302 and is confessed passage 5 with confessing valve seat 301 tight contacts so that close described fuel on this primary importance, and closely the mode of contact seal can be plane sealing, conical surface seal or ball face sealing; And fuel is confessed spool 302 and is confessed direction along fuel and leave and confess valve seat 301 and confess passage 5 so that open described fuel on this second place.Fuel is confessed spring 303, and axial clamp is pressed on described Safety valve body 403 and described fuel and confesses between the spool 302, and confesses spool 302 to described fuel and press to and confess valve seat 301.
In the oil-fired system misoperation; When the fuel-flow control solenoid valve breaks down (being a large amount of fuel feeding) or oil sprayer break down (being that ejection function stops); Oil sprayer can not in time spray into cylinder with the fuel of delivering to the fuel common-rail pipe; Then fuel accumulates in oil sprayer and the fuel common rail pipe, and fuel pressure becomes abnormal pressure fuel.When fuel pressure becomes when being equal to or greater than predetermined fuel safety component 4 operating pressures; Safety component 4 open be Safety valve body 403 along the tight seat of valve lumen shaft to moving towards the second place; Axially define axial bypass gap γ between Safety valve body 403 and the emergency valve seat 402; Radially define radially bypass gap δ between the tight seat of Safety valve body 403 and the valve inner chamber; The tight seat of this two-part gap and valve inner chamber remaining part forms fuel escape way 6, and abnormal pressure fuel returns pressurizing chamber 8 along fuel escape way 6, thereby plays the effect of high voltage parts such as protection oil sprayer, fuel common rail pipe.
Normally in service in oil-fired system; When the pressure of pressurizing chamber 8 is equal to, or greater than predetermined fuel and confesses parts 3 operating pressure values; Fuel confess parts 3 open be fuel confess spool 302 along the Safety valve body lumen shaft to moving towards the second place, fuel is confessed spool 302 and is confessed and axially defines axial bypass gap α between the valve seat 301, fuel is confessed and is radially defined radially bypass gap β between spool 302 and the Safety valve body inner chamber; This two-part gap and Safety valve body inner chamber remaining part form fuel and confess passage 5; Fuel in the pressurizing chamber 8 are confessed passage 5 along fuel, through fuel for export 9 and confess with high pressure, get into the fuel common rail pipe.
Of preamble, Safety valve body 403 is crushed on the emergency valve seat 402 under the pressing force of safety spring 404, so the operating pressure of fuel safety component 4 is to be confirmed by the pressing force that safety spring 404 produces.The operating pressure of fuel safety component 4 can be set through the thickness of the adjustment pad 7 of setting between the tight seat 401 of adjustment valve and the pump housing 1, promptly adjusts the pretightening force of safety spring 404 through adjustment safety spring 404 working spaces.In the practical set process, the tight seat 401 of adjustment pad 7, safety spring 404, Safety valve body 403 and valve of in the pump housing 1, packing in order utilizes the external screw thread of the tight seat of valve 401 1 ends to be screwed into the female thread of the pump housing 1, compresses until adjusting pad 7.
As shown in Figure 2, Safety valve body 403 comprises pilot seal part 403a and fastening bounding means 403b.In practical set, in pilot seal part 403a, insert fuel in order in order and confess spring 303 and confess spool 302 with fuel, insert fastening bounding means 403b then; Carry out fastening connection between fastening bounding means 403b and the pilot seal part 403a, can adopt modes such as interference fit, welding, bonding and riveted joint.Safety valve body 403 acts as a fuel and confesses the frame of parts 3, confesses spool 302 and fuel with fuel and confesses the fuel that spring 303 finally formed blocking and confess parts 3.Fuel safety spool 302 is confessed under the pressing force of spring 303 at fuel, be crushed on and confess on the valve seat 301, so the fuel operating pressure of confessing parts 3 is to have fuel to confess the pressing force that spring 303 produces to confirm.Fuel is confessed the operating pressure of parts 3, can insert the degree of depth 403c of pilot seal part and sets through adjusting lug boss position on the fastening bounding means, and the working space of promptly confessing spring 303 through adjustment fuel is adjusted the pretightening force that fuel is confessed spring 303.
In sum; Fluid-controlled valve of the present invention is confessed parts with fuel safety component and fuel and is combined cleverly, has solved oil-fired system safety problem under high pressure, has both reached the purpose that the abnormal pressure fuel oil directly returns pressurizing chamber; Need not design independent fuel escape way again; Thereby make fuel supply pump structure in plateau compact more, simple, design conveniently, keep in repair easier.
Undoubtedly, the present invention is not limited to above-mentioned embodiment, and fluid-controlled valve of the present invention can also have other malformations, the scheme of especially characteristic of above-mentioned various embodiments being omitted, being exchanged or combine.As long as fuel is confessed parts and the fuel safety component becomes one by the method for pointing out among the present invention, similar scheme all drops within protection scope of the present invention.In a word, protection scope of the present invention should comprise that those are conspicuous conversion to those skilled in the art or substitute and remodeling.
Claims (9)
1. fluid-controlled valve; Be installed in the pump housing (1) of high-pressure fuel feed pump; Comprise that fuel confesses parts (3), fuel safety component (4), fuel and confess passage (5) and fuel escape way (6) etc.; It is characterized in that: described fuel safety component (4) is arranged in the described fuel escape way (6), and described fuel is confessed parts (3) and is arranged on described fuel and confesses in the passage (5), and fuel is confessed parts (3) and is arranged on fuel safety component (4) inside.
2. a kind of fluid-controlled valve as claimed in claim 1; It is characterized in that: be arranged on the operating pressure of the described fuel safety component (4) on the described fuel escape way (6), be configured to be higher than and be arranged on described fuel and confess the operating pressure that described fuel on the passage (5) is confessed parts (3).
3. a kind of fluid-controlled valve as claimed in claim 1; It is characterized in that: described fuel safety component (4) is provided with the internal cavities that communicates with oil circuit; Described internal cavities is installed with moving direction and confesses the consistent described fuel of direction with fuel and confess parts (3), and the moving direction and the fuel of described fuel safety component (4) are confessed in the opposite direction.
4. like claim 1 or 3 described a kind of fluid-controlled valves, it is characterized in that: described fuel safety component (4) comprises
The tight seat of valve (401), the tight seat of this valve (401) one ends are connected with the pump housing (1), the other end is connected with high-pressure oil pipe, and the tight seat of this valve (401) is formed with the fluid valve inner chamber tightly wherein of flowing through; Be formed at the emergency valve seat (402) on the tight seat of the valve inner chamber peripheral wall;
Be arranged in the Safety valve body (403) of the tight seat of valve inner chamber; This Safety valve body (403) is removable between the primary importance and the second place; Safety valve body on this primary importance (403) closely contacts so that close described fuel escape way (6) with emergency valve seat (402), and Safety valve body (403) is confessed direction against fuel and left emergency valve seat (402) so that open described fuel escape way (6) on this second place;
Safety spring (404), axial clamp are pressed between the described pump housing (1) and the described Safety valve body (403), also press to emergency valve seat (402) to described Safety valve body (403).
5. like claim 1 or 3 described a kind of fluid-controlled valves, it is characterized in that: described fuel is confessed parts (3) and being comprised:
Safety valve body (403), this Safety valve body (403) are formed with the fluid Safety valve body inner chamber wherein of flowing through;
Be formed at and confess valve seat (301) on the Safety valve body inner chamber peripheral wall;
The fuel that is arranged in the Safety valve body inner chamber is confessed spool (302); It is removable between the primary importance and the second place that this fuel is confessed spool (302); Fuel is confessed spool (302) and is closely contacted so that close described fuel and confess passage (5) with confessing valve seat (301) on this primary importance, and fuel is confessed spool (302) and confessed direction along fuel and leave and confess valve seat (301) and confess passage (5) so that open described fuel on this second place;
Fuel is confessed spring (303), and axial clamp is pressed on described Safety valve body (403) and described fuel and confesses between the spool (302), and confesses spool (302) to described fuel and press to and confess valve seat (301).
6. a kind of fluid-controlled valve as claimed in claim 4; It is characterized in that: described Safety valve body (403) is described fuel safety component (4) opening state when the described second place, and the bypass gap (δ) that limits between the tight seat of bypass gap (γ), this Safety valve body (403) and the valve that limits between this Safety valve body (403) and the emergency valve seat (402) inner chamber, the tight seat of valve inner chamber remaining part form fuel escape way (6).
7. a kind of fluid-controlled valve as claimed in claim 5; It is characterized in that: it is that described fuel is confessed parts (5) opening state in the described second place that described fuel is confessed spool (302), and this fuel is confessed spool (302) and confessed between the valve seat (301) bypass gap (α), this fuel of limiting and confess the bypass gap (β), the Safety valve body inner chamber remaining part that limit between spool (302) and the Safety valve body inner chamber and form fuel and confess passage (5).
8. a kind of fluid-controlled valve as claimed in claim 4 is characterized in that: the operating pressure of described fuel safety component (4), can set through the thickness of the adjustment pad (7) of setting between the adjustment tight seat of valve (401) and the pump housing (1).
9. a kind of fluid-controlled valve as claimed in claim 5 is characterized in that: described Safety valve body (403) comprises pilot seal part (403a) and fastening bounding means (403b); Described fuel is confessed the operating pressure of parts (3), can insert the degree of depth (403c) of pilot seal part through the boss on the fastening bounding means of adjustment and set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205529066U CN202545082U (en) | 2011-12-14 | 2011-12-14 | Hydraulic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205529066U CN202545082U (en) | 2011-12-14 | 2011-12-14 | Hydraulic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545082U true CN202545082U (en) | 2012-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205529066U Expired - Fee Related CN202545082U (en) | 2011-12-14 | 2011-12-14 | Hydraulic control valve |
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| Country | Link |
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| CN (1) | CN202545082U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982349A (en) * | 2014-05-25 | 2014-08-13 | 辽宁新风企业集团有限公司 | Common rail safety valve |
| CN111794887A (en) * | 2019-04-08 | 2020-10-20 | 纬湃汽车电子(长春)有限公司 | High pressure pump |
-
2011
- 2011-12-14 CN CN2011205529066U patent/CN202545082U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982349A (en) * | 2014-05-25 | 2014-08-13 | 辽宁新风企业集团有限公司 | Common rail safety valve |
| CN111794887A (en) * | 2019-04-08 | 2020-10-20 | 纬湃汽车电子(长春)有限公司 | High pressure pump |
| CN111794887B (en) * | 2019-04-08 | 2022-04-12 | 纬湃汽车电子(长春)有限公司 | High pressure pump |
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Effective date of registration: 20170719 Address after: 214063 Jiangsu city of Wuxi province Qian Rong Lu No. 15 Patentee after: China FAW Group Corporation Address before: 214063 Jiangsu city of Wuxi province Qian Rong Lu No. 15 Patentee before: Wuxi Oil Pump Nozzle Institute of First Automobile Works |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20201214 |