CN115306612A - Fuel high-pressure pump - Google Patents
Fuel high-pressure pump Download PDFInfo
- Publication number
- CN115306612A CN115306612A CN202210225201.6A CN202210225201A CN115306612A CN 115306612 A CN115306612 A CN 115306612A CN 202210225201 A CN202210225201 A CN 202210225201A CN 115306612 A CN115306612 A CN 115306612A
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- China
- Prior art keywords
- assembly
- oil
- pressure
- oil inlet
- valve
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 20
- 238000013016 damping Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 7
- 230000035945 sensitivity Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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- 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
-
- 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
Abstract
The invention discloses a high-pressure fuel pump, which belongs to the technical field of high-pressure pumps and comprises a pump body, and an oil inlet assembly, a pressure damping assembly, a pressurizing assembly and an oil outlet assembly which are hermetically arranged on the pump body; a pressurizing cavity is arranged in the pump body; the oil inlet assembly comprises an oil inlet valve assembly and a solenoid valve assembly; and the oil inlet valve component is internally provided with an ejector pin arranged along the central axis of the oil inlet valve component and an armature integrally formed with one end of the ejector pin. According to the invention, the ejector pin and the armature are integrally formed, when the ejector pin moves along with the armature, the ejector pin and the armature move completely synchronously, the ejector pin does not shake relative to the armature during movement, the risk of breakage is greatly reduced, and the service life of the whole high-pressure pump is further prolonged.
Description
Technical Field
The invention belongs to the technical field of high-pressure pumps, and particularly relates to a fuel high-pressure pump.
Background
The high-pressure fuel pump is a high-pressure pump for use in internal combustion engine systems of motor vehicles, and patent publication No. CN102472258A discloses a high-pressure pump, in particular a radial piston pump or a crankshaft piston pump for fuel injection devices of internal combustion engines for the self-ignition of compressed air, having a pump assembly and a drive shaft. The drive shaft has at least one cam assigned to the pump assembly. The pump assembly also has a pump piston, a roller that runs on the cam surface of the cam, and a roller pusher that receives the roller. The roller tappet is thereby limited in its tilting about a main axis of the pump assembly by the interaction of the roller tappet and the pump piston, along which the pump piston can be actuated, since the roller tappet formed in a web-like manner is supported radially in the housing bore.
The problem of pressurization part intensity in the high-pressure pump has been solved to above-mentioned patent, but does not solve the intensity problem of oil feed part, refer to fig. 1 and 2, current high-pressure pump, thimble and armature in the oil feed valve subassembly are the shaping of making alone, use after the equipment, there is the space at the two connection position, when the thimble moves along with armature, there is relative motion between the two, the thimble can rock in the gap of two connections promptly, the cracked risk ratio of thimble is higher, influences the holistic life of high-pressure pump.
Disclosure of Invention
The object of the present invention is to provide a high-pressure fuel pump that solves the problems of the prior art during use.
In order to achieve the purpose, the invention provides the following technical scheme: a high-pressure fuel pump comprises a pump body, and an oil inlet assembly, a pressure damping assembly, a pressurizing assembly and an oil outlet assembly which are hermetically arranged on the pump body;
a pressurizing cavity is arranged in the pump body;
the oil inlet assembly comprises an oil inlet valve assembly and a solenoid valve assembly;
and the oil inlet valve component is internally provided with an ejector pin arranged along the central axis of the oil inlet valve component and an armature integrally formed with one end of the ejector pin.
Preferably, the cross section of the armature has an outer diameter of 7.5cm-8cm.
Preferably, the oil inlet valve assembly comprises an oil inlet valve seat, and an oil inlet valve cover and an oil inlet valve body which are respectively positioned on two sides of the oil inlet valve seat.
Preferably, the pump body is in be equipped with the oil feed passageway between pressure damping subassembly and the oil feed disk seat, the oil feed valve is covered circumference and is provided with a plurality of oil-outs and the thimble is keeping away from armature one end is provided with right the sealed pad that the oil-out carries out the shutoff.
Preferably, the oil outlet assembly comprises an oil outlet valve assembly and an oil outlet seat, an oil outlet channel I is arranged between the oil outlet valve assembly and the pressurizing cavity, and an oil outlet pipeline II is arranged between the oil outlet valve assembly and the oil outlet seat.
Preferably, the oil outlet valve assembly is a ball valve.
Preferably, the pressurizing assembly includes a spring-loaded plunger and a seal assembly and valve housing for use with the plunger and mounted to the pump body.
Preferably, the pump body is provided with a first pressure relief channel between the first pressure relief valve assembly and the pressurizing cavity, and a second pressure relief channel between the second pressure relief valve assembly and the pressure damping assembly.
Preferably, the pressure relief valve assembly is a ball valve.
Preferably, a central axis of the pressure relief valve assembly and a central axis of the pressurizing chamber are parallel.
Compared with the prior art, the invention has the beneficial effects that:
1. because thimble and armature integrated into one piece, when the thimble follows armature and moves, the motion of the two is synchronous completely, and the thimble can not take place to rock relative to armature when moving, greatly reduced cracked risk, and then improved the holistic life of high-pressure pump.
2. Through reducing the specification of armature, increased the ratio of thimble cross-section diameter and armature cross-section external diameter on the one hand, improved the joint strength of the two hookup location, further reduced the cracked risk of thimble, on the other hand, reduced the recoil of armature when the motion, reduced motion wearing and tearing and motion noise.
3. Through choosing the ball valve as the delivery valve subassembly, utilize the characteristics that the ball valve leakproofness is strong and reaction rate is fast, can improve the holistic sealing performance of high-pressure pump and the sensitivity of action.
Drawings
FIG. 1 is a schematic view of a prior art high pressure pump of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is a top view of the present invention;
FIG. 5 isbase:Sub>A first cross-sectional view A-A of FIG. 4;
FIG. 6 isbase:Sub>A second sectional view taken along line A-A of FIG. 4;
fig. 7 is a sectional view B-B of fig. 4.
In the figure: 1. an oil inlet assembly; 10. an oil inlet valve assembly; 100. an oil inlet valve seat; 101. an oil inlet valve cover; 101a, an oil outlet; 102. an oil inlet valve body; 103. a thimble; 104. a gasket; 105. an armature; 11. a solenoid valve assembly; 2. a pressure damping assembly; 3. an oil outlet assembly; 30. an oil outlet valve assembly; 31. an oil outlet seat; 4. a pressurizing assembly; 40. a plunger; 41. a seal assembly; 42. a valve housing; 5. a pressure relief valve assembly; 6. a pump body; 60. an oil inlet channel; 61. a pressurizing chamber; 62a, a first oil outlet channel; 62b and a second oil outlet channel; 63a, a first pressure relief channel; 63b and a second pressure relief channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 3-7, the present invention provides a technical solution: a fuel high-pressure pump (hereinafter referred to as high-pressure pump for short) is composed of a pump body 6, an oil inlet component 1, a pressure damping component 2, an oil outlet component 3 and a pressurizing component 4, wherein the oil inlet component 1 is hermetically mounted on the pump body 6, when the high-pressure pump works, the oil inlet component 1 is opened, the oil inlet component 1 is communicated with a pressurizing cavity 61 in the pump body 6, external low-pressure oil enters the oil inlet component 1 through the pressure damping component 2, flows through the oil inlet component 1 and enters the pressurizing cavity 61, and under the action of the pressurizing component 4, the low-pressure oil is changed into high-pressure oil and flows out through an oil outlet valve component 30 and enters a high-pressure system.
The oil inlet assembly 1 comprises an oil inlet valve assembly 10 and an electromagnetic valve assembly 11, the action of the oil inlet valve assembly 10 is controlled through the electromagnetic valve assembly 11, and then whether the oil inlet assembly 1 is communicated with the pressurization cavity 61 is controlled, wherein the oil inlet valve assembly 10 comprises an oil inlet valve seat 100, and an oil inlet valve cover 101 and an oil inlet valve body 102 which are respectively positioned on two sides of the oil inlet valve seat 100, an oil inlet channel 60 is arranged between the pressure damping assembly 2 and the oil inlet valve seat 100 on the pump body 6, a plurality of oil outlets 101a are arranged on the oil inlet valve cover 101, the oil outlets (101 a) are circumferentially distributed, and low-pressure oil enters a cavity in the oil inlet valve seat 100 through the oil inlet channel 60 and enters the pressurization cavity 61 through the oil outlet 101a on the oil inlet valve cover 101.
An ejector pin 103 arranged along the central axis of the oil inlet valve assembly 10, sealing gaskets 104 respectively positioned at two ends of the ejector pin 103 and an armature 105 are arranged in the oil inlet valve assembly 10, the sealing gaskets 104 can seal an oil outlet 101a on the oil inlet valve cover 101, the armature 105 is loaded by a spring and can perform linear motion along the central axis of the oil inlet valve assembly 10 under the action of the electromagnetic valve assembly 11, the ejector pin 103, the sealing gaskets 104 and the armature 105 move synchronously, and the movement of the sealing gaskets 104 is controlled through the electromagnetic valve assembly 11 and the spring load, so that the opening and closing of the oil outlet 101a can be controlled, and further the operation of the high-pressure pump is controlled; meanwhile, the sealing gasket 104 is in contact with the oil inlet valve seat 100, and can function as a check valve, so that high-pressure oil in the pressurizing cavity 61 can be effectively prevented from flowing back.
Furthermore, the thimble 103 and the armature 105 are integrally formed, no gap exists at the contact position of the thimble 103 and the armature 105, when the thimble 103 moves along with the armature 105, the thimble 103 and the armature 105 move completely synchronously, relative movement does not exist between the thimble 103 and the armature 105, and the thimble 103 does not shake, so that the possibility of breakage of the thimble 103 is reduced, the service life of the thimble 103 is prolonged, and the whole service life of the high-pressure pump is prolonged.
Furthermore, the outer diameter of the cross section of the armature 105 is 7.5cm-8cm, preferably 7.8cm, compared with the existing high-pressure pump, the outer diameter of the cross section of the armature 105 is smaller, and the ratio of the outer diameter of the cross section of the thimble 103 to the outer diameter of the cross section of the armature 105 is larger at the moment, so that the connection strength of the armature 105 and the thimble 103 is improved, the risk of breakage of the thimble 103 is further reduced, meanwhile, the specification of the armature 105 is reduced through reduction of the outer diameter of the cross section of the armature 105, the recoil force of the armature 105 during movement is reduced, and accordingly, the movement abrasion of the armature 105 and noise generated during movement are reduced.
The pressurizing assembly 4 comprises a spring-loaded plunger 40, a sealing assembly 41 and a valve sleeve 42, wherein the sealing assembly 41 and the valve sleeve 42 are matched with the plunger 40 and are arranged on the pump body 6, the central axis of the plunger 40 is coincident with the central axis of the pressurizing cavity 61, the plunger 40 can linearly move along the length direction of the pressurizing cavity 61, and the plunger 40 is driven to repeatedly move by external acting force and spring load, so that low-pressure oil in the pressurizing cavity 61 is pressurized to be high-pressure oil.
The oil outlet assembly 3 comprises an oil outlet valve assembly 30 and an oil outlet seat 31, wherein an oil outlet channel I62 a is arranged between the oil outlet valve assembly 30 and the pressurizing cavity 61 of the pump body 6, an oil outlet channel II is arranged between the oil outlet valve assembly 30 and the oil outlet seat 31, and high-pressure oil which is subjected to pressurization treatment in the pressurizing cavity 61 flows through the oil outlet channel I62 a and then enters a high-pressure system.
Further, the oil outlet valve assembly 30 is a ball valve, and the ball valve is used as the oil outlet valve assembly 30, so that the overall air tightness of the high-pressure pump can be improved, and meanwhile, the action of the ball valve is quicker, and the overall sensitivity of the device can be improved.
This high-pressure pump is still including installing relief valve subassembly 5 in the pump body 6, the axis of relief valve subassembly 5 is parallel with the axis in pressurization chamber 61, and the pump body 6 is equipped with a pressure release passageway 63a between relief valve subassembly 5 and pressurization chamber 61 and at relief valve subassembly 5 with two 63b of 2 pressure release passageways of pressure damping subassembly, when the fuel pressure in pressurization chamber 61 is greater than the setting value, relief valve subassembly 5 opens, the high-pressure oil in the pressurization chamber 61 flows through pressure release passageway 63a, during the valve subassembly and the second reentrant pressure damping subassembly 2 of discharge pipe, accomplish the pressure release operation of high-pressure pump, thereby guarantee the security of high-pressure pump operation.
Further, relief valve subassembly 5 is the ball valve, uses the ball valve as relief valve subassembly 5, utilizes the advantage that the ball valve gas tightness is good and the reaction is sensitive, can improve relief valve subassembly's gas tightness, reduces the leakage, and the faster discharge of high-pressure oil can be guaranteed to higher sensitivity simultaneously, and then the security when guaranteeing the high-pressure pump operation.
The operation flow of the high-pressure pump is as follows:
when the high-pressure pump is in a working state, the electromagnetic valve assembly 11 is opened, the armature 105 drives the thimble 103 and the sealing gasket 104 to move under the action of the electromagnetic valve, the oil outlet 101a on the oil inlet valve cover 101 is opened, low-pressure oil in a low-pressure system flows into a cavity in the oil inlet valve body 102 through the pressure damping assembly 2 and the oil inlet channel 60 and then flows into the pressurizing cavity 61 in the pump body 6 through the oil outlet 101a on the oil inlet valve cover 101, the plunger 40 in the pressurizing assembly 4 moves back and forth in the pressurizing cavity 61 under the action of external force and spring load so as to pressurize the low-pressure oil, and the pressurized high-pressure oil flows into the oil outlet valve assembly 30 through the oil outlet channel II and the oil outlet seat 31 and then flows into the high-pressure system through the oil outlet pipe II and the oil outlet seat 31.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A high-pressure fuel pump, characterized by: comprises that
The pump comprises a pump body (6), and an oil inlet assembly (1), a pressure damping assembly (2), a pressurizing assembly (4) and an oil outlet assembly (3) which are hermetically arranged on the pump body (6);
a pressurizing cavity (61) is arranged in the pump body (6);
the oil inlet assembly (1) comprises an oil inlet valve assembly (10) and an electromagnetic valve assembly (11);
the oil inlet valve assembly (10) is internally provided with an ejector pin (103) arranged along the central axis of the oil inlet valve assembly (10) and an armature (105) integrally formed with one end of the ejector pin (103).
2. A high-pressure fuel pump according to claim 1, characterized in that: the outer diameter of the cross section of the armature (105) is 7.5cm-8cm.
3. A high-pressure fuel pump according to claim 1, characterized in that: the oil inlet valve assembly (10) comprises an oil inlet valve seat (100), and an oil inlet valve cover (101) and an oil inlet valve body (102) which are respectively positioned on two sides of the oil inlet valve seat (100).
4. A high-pressure fuel pump according to claim 3, characterized in that: the pump body (6) be in pressure damping subassembly (2) with be equipped with oil feed passageway (60) between oil feed valve seat (100), oil feed valve lid (101) go up circumference and be provided with a plurality of oil-outs (101 a) and thimble (103) are keeping away from armature (105) one end is provided with right oil-out (101 a) carry out the sealed pad (104) of shutoff.
5. A high-pressure fuel pump according to claim 1, characterized in that: the oil outlet assembly (3) comprises an oil outlet valve assembly (30) and an oil outlet seat (31), the pump body (6) is arranged between the oil outlet valve assembly (30) and the pressurizing cavity (61) and is provided with an oil outlet channel I (62 a), and the pump body (6) is arranged between the oil outlet valve assembly (30) and the oil outlet seat (31) and is provided with an oil outlet pipeline II (62 b).
6. A high-pressure fuel pump according to claim 5, characterized in that: the oil outlet valve assembly (30) is a ball valve.
7. A high-pressure fuel pump according to claim 1, characterized in that: the pressurizing assembly (4) comprises a plunger (40) loaded by a spring, a sealing assembly (41) matched with the plunger (40) and arranged on the pump body (6), and a valve sleeve (42).
8. A high-pressure fuel pump according to claim 1, characterized in that: still including installing pressure release valve subassembly (5) in the pump body (6), the pump body (6) be in pressure release valve subassembly (5) with be provided with pressure release channel (63 a) between pressurization chamber (61), just pump body (6) are in pressure release valve subassembly (5) with be provided with pressure release channel two (63 b) between pressure damping subassembly (2).
9. A high-pressure fuel pump according to claim 8, characterized in that: the pressure relief valve assembly (5) is a ball valve.
10. A high-pressure fuel pump according to claim 8 or 9, characterized in that: the central axis of the pressure relief valve assembly (5) is parallel to the central axis of the pressurization cavity (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210225201.6A CN115306612A (en) | 2022-03-09 | 2022-03-09 | Fuel high-pressure pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210225201.6A CN115306612A (en) | 2022-03-09 | 2022-03-09 | Fuel high-pressure pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115306612A true CN115306612A (en) | 2022-11-08 |
Family
ID=83854689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210225201.6A Pending CN115306612A (en) | 2022-03-09 | 2022-03-09 | Fuel high-pressure pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115306612A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014722A (en) * | 2016-05-25 | 2016-10-12 | 中国第汽车股份有限公司无锡油泵油嘴研究所 | Electronic control fuel pump |
| CN206309514U (en) * | 2016-12-28 | 2017-07-07 | 浙江翱腾汽车配件有限公司 | A kind of high pressure fuel supply pump with relief valve |
| CN107429650A (en) * | 2015-03-25 | 2017-12-01 | 罗伯特·博世有限公司 | Solenoid-operated control valve, the conveying capacity particularly for controlling high-pressure fuel pump |
| CN110678642A (en) * | 2017-05-31 | 2020-01-10 | 日立汽车系统株式会社 | High-pressure fuel supply pump |
-
2022
- 2022-03-09 CN CN202210225201.6A patent/CN115306612A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429650A (en) * | 2015-03-25 | 2017-12-01 | 罗伯特·博世有限公司 | Solenoid-operated control valve, the conveying capacity particularly for controlling high-pressure fuel pump |
| CN106014722A (en) * | 2016-05-25 | 2016-10-12 | 中国第汽车股份有限公司无锡油泵油嘴研究所 | Electronic control fuel pump |
| CN206309514U (en) * | 2016-12-28 | 2017-07-07 | 浙江翱腾汽车配件有限公司 | A kind of high pressure fuel supply pump with relief valve |
| CN110678642A (en) * | 2017-05-31 | 2020-01-10 | 日立汽车系统株式会社 | High-pressure fuel supply pump |
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