CN215672514U - Oil outlet valve of single-cylinder air-cooled diesel engine and oil injection pump thereof - Google Patents
Oil outlet valve of single-cylinder air-cooled diesel engine and oil injection pump thereof Download PDFInfo
- Publication number
- CN215672514U CN215672514U CN202121683834.9U CN202121683834U CN215672514U CN 215672514 U CN215672514 U CN 215672514U CN 202121683834 U CN202121683834 U CN 202121683834U CN 215672514 U CN215672514 U CN 215672514U
- Authority
- CN
- China
- Prior art keywords
- valve
- oil outlet
- channel
- valve core
- diesel engine
- 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.)
- Active
Links
Images
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model provides an oil outlet valve of a single-cylinder air-cooled diesel engine and an oil injection pump thereof, wherein the oil outlet valve comprises: the valve seat is provided with an oil outlet channel and an installation channel, the upper port of the installation channel is communicated with the lower port of the oil outlet channel, and the diameter of the lower port of the oil outlet channel in the direction towards the installation channel is gradually increased; the valve body is arranged in the installation channel and comprises a first valve core, a second valve core and a valve ball, the first valve core is provided with an oil injection channel, the valve ball is arranged between the first valve core and the second valve core, the valve ball can be sealed at one end of the oil injection channel, and the first valve core is movably arranged between the second valve core and the oil outlet channel; the diameter of the lower port of the oil outlet channel in the direction towards the installation channel is gradually increased, so that high-pressure fuel oil flowing to the oil outlet channel is guided through the guide section, and the stability of oil outlet quantity and oil outlet pressure is ensured.
Description
Technical Field
The utility model relates to an oil outlet valve of a single-cylinder air-cooled diesel engine and an oil injection pump thereof.
Background
The fuel injection pump comprises a plunger assembly and an oil outlet valve, the plunger assembly is provided with a plunger sleeve and a plunger core, the upper end of the plunger sleeve is connected with the oil outlet valve, high-pressure fuel enters the plunger sleeve through an oil inlet pipe, the plunger core in the plunger sleeve moves up and down to enable the high-pressure fuel in the plunger sleeve to enter the oil outlet valve, and the high-pressure fuel in the oil outlet valve is quantitatively and regularly supplied to the engine through an oil outlet channel to meet the working requirements of the engine.
However, because the high-pressure fuel in the plunger sleeve enters the installation channel of the oil outlet valve firstly, when the pressure in the installation channel reaches the set pressure, the oil pressure jacks up the valve core in the oil outlet valve, so that the high-pressure fuel in the installation channel flows out through the oil outlet channel, and a limiting end face for limiting the supporting spring exists between the installation channel and the oil outlet channel, so that when the high-pressure fuel in the installation channel flows to the oil outlet channel, the limiting end face can block the high-pressure fuel, and the pressure and the stability of oil injection of the oil outlet valve are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an oil outlet valve of a single-cylinder air-cooled diesel engine, which is used for ensuring the stability of oil outlet quantity.
The above object of the present invention can be achieved by the following technical solutions:
the utility model provides an oil outlet valve of a single-cylinder air-cooled diesel engine, which comprises:
the oil outlet valve comprises a valve seat, wherein an oil outlet channel and an installation channel are arranged on the valve seat, the upper port of the installation channel is communicated with the lower port of the oil outlet channel, and the diameter of the lower port of the oil outlet channel in the direction towards the installation channel is gradually increased;
the valve body is arranged in the installation channel and comprises a first valve core, a second valve core and a valve ball, an oil injection channel is arranged on the first valve core, the valve ball is arranged between the first valve core and the second valve core and can be sealed at one end of the oil injection channel, and the first valve core is movably arranged between the second valve core and the oil outlet channel;
the first valve core is provided with a first sealing end face, the first valve core is provided with a second sealing end face, the first sealing end face is connected with the second sealing end face in a sealing mode, and an overflowing gap is formed between the first valve core and the inner surface of the installation channel.
In some embodiments of the present invention, the valve body further includes a mounting sleeve, the mounting sleeve is connected in the mounting channel in a sealing manner, the mounting sleeve is provided with a mounting hole, an upper end surface of the mounting sleeve defines the first sealing end surface, the second valve core is arranged in the mounting hole, and a flow channel which can be communicated with the flow gap is defined between the second valve core and an inner surface of the mounting hole.
In some embodiments of the present invention, a mounting groove is formed on an inner surface of the mounting hole, and a positioning protrusion is formed on the second spool, and the positioning protrusion is disposed in the mounting groove.
In some embodiments of the present invention, an adjusting bolt is threadedly connected to the positioning protrusion, and one end of the adjusting bolt abuts against the bottom surface of the mounting groove.
In some embodiments of the present invention, the first valve element has a plurality of flow grooves spaced apart from each other on a side of the second sealing end surface adjacent to the mounting sleeve, and a pressurizing passage is defined between each of the flow grooves and an inner surface of the mounting hole.
In some embodiments of the present invention, a plurality of guiding protrusions are spaced on an inner surface of the mounting hole, the guiding protrusions are slidably disposed in the flow channels in a one-to-one correspondence, and a cross-sectional area of the guiding protrusions is smaller than a width of the flow channels.
In some embodiments of the utility model, the lower end of the mounting sleeve is provided with a seal between the valve seat and a plunger sleeve that is threadedly attached to the valve seat.
In some embodiments of the present invention, the valve body further includes a first support spring, one end of which is supported on the first valve spool, and the other end of which is supported on the lower port of the oil outlet passage.
In some embodiments of the present invention, the valve body further comprises a second support spring, one end of which is supported at a lower end of the second valve spool, and the other end of which is adapted to be supported at the plunger core.
The utility model also provides an oil injection pump which comprises the oil outlet valve of the single-cylinder air-cooled diesel engine.
The oil outlet valve of the single-cylinder air-cooled diesel engine has the characteristics and advantages that:
1. the diameter of the lower port of the oil outlet channel in the direction towards the installation channel is gradually increased, so that high-pressure fuel oil flowing to the oil outlet channel is guided through the guide section, and the stability of oil outlet quantity and oil outlet pressure is ensured.
2. Through set up the installation cover in the installation passageway to be convenient for carry out the finish machining to the up end of installation cover, with the roughness of guaranteeing first seal end face, reduce the processing degree of difficulty.
3. The sectional area of the guide protrusion is smaller than the width of the circulation groove, so that the volume in the circulation groove can be reduced, the pressure of high-pressure fuel passing through the circulation groove is improved, the first valve core is jacked up, and the circulation of the high-pressure fuel is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a cross-sectional view of an injection pump according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of a delivery valve according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the outlet valve at the second spool according to the embodiment of the present invention;
fig. 4 is a sectional view of the drain valve at the first spool according to the embodiment of the present invention.
The reference numbers illustrate:
1. a valve seat; 11. an oil outlet channel; 111. a guide section; 12. installing a channel; 121. a first sealing end face;
2. a valve body; 21. a first valve spool; 211. an oil injection channel; 212. a second sealing end face; 213. a circulation tank; 22. a second valve core; 221. positioning protrusions; 222. adjusting the bolt; 23. a valve ball; 24. an over-current gap; 25. installing a sleeve; 251. mounting holes; 252. a flow-through channel; 253. mounting grooves; 254. a guide projection; 255. a sealing part; 26. a first support spring; 27. a second support spring;
3. a plunger core;
4. a plunger sleeve;
5. an oil inlet pipe.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 4, the present invention provides an oil outlet valve of a single-cylinder air-cooled diesel engine, comprising: the oil outlet valve comprises a valve seat 1, wherein an oil outlet channel 11 and an installation channel 12 are arranged on the valve seat 1, an upper end opening of the installation channel 12 is communicated with a lower end opening of the oil outlet channel 11, and the diameter of the lower end opening of the oil outlet channel 11 in the direction towards the installation channel 12 is gradually increased; the valve body 2 is arranged in the installation channel 12, the valve body 2 comprises a first valve core 21, a second valve core 22 and a valve ball 23, an oil injection channel 211 is arranged on the first valve core 21, the valve ball 23 is arranged between the first valve core 21 and the second valve core 22, the valve ball 23 can be sealed at one end of the oil injection channel 211, and the first valve core 21 is movably arranged between the second valve core 22 and the oil outlet channel 11; the installation channel 12 is provided with a first sealing end surface 121, the first valve element 21 is provided with a second sealing end surface 212, the first sealing end surface 121 is connected to the second sealing end surface 212 in a sealing manner, and a flow passing gap 24 is formed between the first valve element 21 and the inner surface of the installation channel 12.
It can be understood that, when the plunger core 3 of the fuel injection pump reciprocates in the plunger sleeve 4, the outlet of the fuel inlet pipe 5 is opened or closed, so that when the outlet of the fuel inlet pipe 5 is opened, the high-pressure fuel in the fuel inlet pipe 5 firstly enters the plunger sleeve 4, the high-pressure fuel in the plunger sleeve 4 enters the installation channel 12, under the pressure of the high-pressure fuel, the first valve core 21 is pushed to move towards the fuel outlet channel 11, so that a part of the high-pressure fuel flows to the fuel outlet channel 11 through the fuel injection channel 211 of the first valve core 21, and a part of the high-pressure fuel enters the fuel outlet channel 11 through the overflowing gap 24, thereby ensuring that the high-pressure fuel flowing out from the fuel outlet channel 11 can be supplied to the engine in a fixed amount and fixed time, and meeting the working requirements of the engine.
The diameter of the lower port of the oil outlet channel 11 in the direction towards the mounting channel 12 is gradually increased, even if the oil outlet channel 11 is close to the guide section 111 of the mounting channel 12 and is of a horn-shaped structure, the high-pressure fuel flowing to the oil outlet channel 11 is guided through the guide section 111, the pressure of the high-pressure fuel flowing to the oil outlet channel 11 is prevented from being reduced by the plane, and the stability of the oil outlet amount and the oil outlet pressure is ensured.
In some embodiments of the present invention, the valve body 2 further includes a first supporting spring 26, one end of the first supporting spring 26 is supported on the first valve element 21, and the other end of the first supporting spring 26 is supported on the lower port of the oil outlet passage 11.
It can be understood that the elastic support of the first valve spool 21 is facilitated by supporting the first support spring 26 at the lower port of the first valve spool 21 and the oil outlet passage 11, so that when oil injection is not required, the second sealing end surface 212 of the first valve spool 21 is supported on the first sealing end surface 121 by the elastic force of the first support spring 26 after the oil pressure in the installation passage 12 is reduced, and the sealing performance is ensured.
In some embodiments of the present invention, the valve body 2 further includes a mounting sleeve 25, the mounting sleeve 25 is sealingly connected in the mounting channel 12, a mounting hole 251 is formed on the mounting sleeve 25, an upper end surface of the mounting sleeve 25 defines the first sealing end surface 121, the second valve core 22 is disposed in the mounting hole 251, and a flow channel 252 capable of communicating with the flow gap 24 is defined between the second valve core 22 and an inner surface of the mounting hole 251.
It can be understood that, by arranging the mounting sleeve 25 in the mounting channel 12, the upper end face of the mounting sleeve 25 is conveniently subjected to finish machining, so that the flatness of the first sealing end face 121 is ensured, and the machining difficulty is reduced.
In some embodiments of the present invention, a mounting groove 253 is formed on an inner surface of the mounting hole 251, and a positioning protrusion 221 is formed on the second spool 22, and the positioning protrusion 221 is disposed in the mounting groove 253.
It is understood that the positioning protrusion 221 may be inserted into the mounting groove 253 when the second spool 22 is mounted, thereby facilitating the positioning of the second spool 22 in the mounting hole 251 to achieve the positioning of the second spool 22.
In some embodiments of the present invention, an adjusting bolt 222 is threadedly connected to the positioning protrusion 221, and one end of the adjusting bolt 222 abuts against the bottom surface of the mounting groove 253.
It can be understood that the position of the second valve spool 22 in the mounting hole 251 is adjusted by rotating the adjusting bolt 222 on the positioning projection 221 to adjust the distance between the end of the adjusting bolt 222 and the top end of the positioning projection 221, so as to adjust the position of the positioning projection 221 in the mounting groove 253, and thus to adjust the elastic force of the second supporting spring 27, which will be described later.
In some embodiments of the present invention, the first valve element 21 is spaced apart from the first valve element by a plurality of flow grooves 213, the plurality of flow grooves 213 are located on a side of the second sealing end surface 212 adjacent to the mounting sleeve 25, and a pressurizing passage is defined between each of the flow grooves 213 and an inner surface of the mounting hole 251.
It can be understood that, by providing a plurality of flow grooves 213 on the first valve element 21, the high-pressure fuel can directly exert a force on the first valve element 21 through a plurality of pressure-increasing passages, so as to push the first valve element 21 to rise, and ensure that the first sealing end surface 121 and the second sealing end surface 212 are separated, thereby ensuring that the high-pressure fuel flows from the flow gap 24 to the oil outlet passage 11.
In some embodiments of the present invention, a plurality of guide protrusions 254 are spaced apart from each other on the inner surface of the mounting hole 251, the plurality of guide protrusions 254 are slidably disposed in the plurality of flow channels 213 in a one-to-one correspondence, and the cross-sectional area of the guide protrusions 254 is smaller than the width of the flow channels 213.
It will be appreciated that by slidably disposing the guide protrusions 254 in the corresponding flow grooves 213, it is possible to achieve guidance for movement of the first valve element 21, and to reduce the rotation angle of the first valve element 21 in the mounting passage 12, thereby reducing the relative displacement between the first seal end surface 121 and the second seal end surface 212, and ensuring the sealing property between the first seal end surface 121 and the second seal end surface 212.
Meanwhile, the sectional area of the guide protrusion 254 is made smaller than the width of the circulation groove 213, so that the volume of the inside of the circulation groove 213 can be reduced, the pressure of the high-pressure fuel passing through the circulation groove 213 can be increased, the first valve body 21 can be lifted, and the circulation of the high-pressure fuel can be ensured.
In some embodiments of the present invention, the lower end of the mounting sleeve 25 is provided with a sealing portion 255, the sealing portion 255 is located between the valve seat 1 and the plunger sleeve 4, and the plunger sleeve 4 is screwed to the valve seat 1. It can be understood that, through clamping the sealing part 255 between the valve seat 1 and the plunger sleeve 4, a sealing ring can be arranged between the sealing part 255 and the plunger sleeve 4, so that on one hand, the positioning of the mounting sleeve 25 is realized, on the other hand, the sealing between the mounting sleeve 25 and the valve seat 1 is realized, and the high-pressure fuel in the mounting channel 12 is prevented from flowing out from the gap between the mounting sleeve 25 and the valve seat 1.
In some embodiments of the present invention, the valve body 2 further comprises a second supporting spring 27, one end of the second supporting spring 27 is supported on the lower end of the second valve core 22, and the other end of the second supporting spring 27 is adapted to be supported on the plunger core 3.
It can be understood that the positioning of the second valve spool 22 is achieved by supporting the second supporting spring 27 between the plunger spool 3 and the second valve spool 22 so that the upper end of the second valve spool 22 can be stably supported on the bottom surface of the mounting groove 253 by the adjusting bolt 222 under the elastic support of the second supporting spring 27.
The utility model also provides an oil injection pump which comprises the oil outlet valve of the single-cylinder air-cooled diesel engine.
According to the fuel injection pump of the embodiment of the utility model, when the plunger core 3 of the fuel injection pump reciprocates in the plunger sleeve 4, the outlet of the fuel inlet pipe 5 is opened or closed, so that when the outlet of the fuel inlet pipe 5 is opened, high-pressure fuel in the fuel inlet pipe 5 firstly enters the plunger sleeve 4, high-pressure fuel in the plunger sleeve 4 enters the installation channel 12, the first valve core 21 is pushed to move towards the fuel outlet channel 11 under the pressure of the high-pressure fuel, so that a part of the high-pressure fuel flows to the fuel outlet channel 11 through the fuel injection channel 211 of the first valve core 21, and a part of the high-pressure fuel enters the fuel outlet channel 11 through the overflowing gap 24, thereby ensuring that the high-pressure fuel flowing out of the fuel outlet channel 11 can be supplied to an engine in a fixed amount and at fixed time, and meeting the working requirements of the engine.
The diameter of the lower port of the oil outlet channel 11 in the direction towards the mounting channel 12 is gradually increased, even if the oil outlet channel 11 is close to the guide section 111 of the mounting channel 12 and is of a horn-shaped structure, the high-pressure fuel flowing to the oil outlet channel 11 is guided through the guide section 111, the pressure of the high-pressure fuel flowing to the oil outlet channel 11 is prevented from being reduced by the plane, and the stability of the oil outlet amount and the oil outlet pressure is ensured.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides an oil outlet valve of single cylinder air-cooled diesel engine which characterized in that includes:
the oil outlet valve comprises a valve seat, wherein an oil outlet channel and an installation channel are arranged on the valve seat, the upper port of the installation channel is communicated with the lower port of the oil outlet channel, and the diameter of the lower port of the oil outlet channel in the direction towards the installation channel is gradually increased;
the valve body is arranged in the installation channel and comprises a first valve core, a second valve core and a valve ball, an oil injection channel is arranged on the first valve core, the valve ball is arranged between the first valve core and the second valve core and can be sealed at one end of the oil injection channel, and the first valve core is movably arranged between the second valve core and the oil outlet channel;
the first valve core is provided with a first sealing end face, the first valve core is provided with a second sealing end face, the first sealing end face is connected with the second sealing end face in a sealing mode, and an overflowing gap is formed between the first valve core and the inner surface of the installation channel.
2. The oil outlet valve of the single-cylinder air-cooled diesel engine as claimed in claim 1, wherein the valve body further comprises a mounting sleeve, the mounting sleeve is hermetically connected in the mounting channel, a mounting hole is formed in the mounting sleeve, the upper end surface of the mounting sleeve defines the first sealing end surface, the second valve core is arranged in the mounting hole, and a flow channel which can be communicated with the flow gap is defined between the second valve core and the inner surface of the mounting hole.
3. The oil outlet valve of the single cylinder air-cooled diesel engine as claimed in claim 2, wherein the inner surface of the mounting hole is provided with a mounting groove, the second valve core is provided with a positioning protrusion, and the positioning protrusion is arranged in the mounting groove.
4. The oil outlet valve of the single-cylinder air-cooled diesel engine as claimed in claim 3, wherein the positioning protrusion is threadedly connected with an adjusting bolt, and one end of the adjusting bolt is stopped against the bottom surface of the mounting groove.
5. The oil outlet valve of the single-cylinder air-cooled diesel engine as claimed in claim 2, wherein a plurality of flow grooves are spaced on the first valve core, the plurality of flow grooves are located on the side of the second sealing end surface close to the mounting sleeve, and a pressurizing passage is defined between each flow groove and the inner surface of the mounting hole.
6. The oil outlet valve of the single-cylinder air-cooled diesel engine as claimed in claim 5, wherein a plurality of guiding protrusions are arranged on the inner surface of the mounting hole at intervals, the guiding protrusions are slidably arranged in the circulation grooves in a one-to-one correspondence manner, and the cross-sectional area of the guiding protrusions is smaller than the width of the circulation grooves.
7. The oil outlet valve of the single-cylinder air-cooled diesel engine as claimed in claim 2, wherein the lower end of the mounting sleeve is provided with a sealing part, the sealing part is positioned between the valve seat and a plunger sleeve, and the plunger sleeve is in threaded connection with the valve seat.
8. The oil outlet valve of the single-cylinder air-cooled diesel engine as claimed in claim 1, wherein the valve body further comprises a first supporting spring, one end of the first supporting spring is supported on the first valve core, and the other end of the first supporting spring is supported on the lower port of the oil outlet channel.
9. The oil outlet valve of the single cylinder air-cooled diesel engine as claimed in claim 1, wherein the valve body further comprises a second supporting spring, one end of the second supporting spring is supported on the lower end of the second valve core, and the other end of the second supporting spring is adapted to be supported on the plunger core.
10. An oil injection pump comprising the delivery valve of the single cylinder air-cooled diesel engine of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121683834.9U CN215672514U (en) | 2021-07-22 | 2021-07-22 | Oil outlet valve of single-cylinder air-cooled diesel engine and oil injection pump thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121683834.9U CN215672514U (en) | 2021-07-22 | 2021-07-22 | Oil outlet valve of single-cylinder air-cooled diesel engine and oil injection pump thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672514U true CN215672514U (en) | 2022-01-28 |
Family
ID=79981201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121683834.9U Active CN215672514U (en) | 2021-07-22 | 2021-07-22 | Oil outlet valve of single-cylinder air-cooled diesel engine and oil injection pump thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215672514U (en) |
-
2021
- 2021-07-22 CN CN202121683834.9U patent/CN215672514U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8240634B2 (en) | High-pressure valve assembly | |
| KR20130085039A (en) | Electrically-operated valva | |
| CN111734621A (en) | Emulsion plunger pump and pump head assembly thereof | |
| CN215672514U (en) | Oil outlet valve of single-cylinder air-cooled diesel engine and oil injection pump thereof | |
| EP3301535B1 (en) | Pressure reduction valve device | |
| KR20200085874A (en) | Jet pump unit with metering valve to control the gaseous medium | |
| CN215110651U (en) | Hydraulic control valve | |
| KR102406046B1 (en) | High-pressure valve | |
| US20230045640A1 (en) | Fuel injection valve for internal combustion engines | |
| WO2019065973A1 (en) | High-pressure pump | |
| CN111247330A (en) | High pressure pump | |
| CN111656001A (en) | Fuel pump | |
| CN212716804U (en) | Engine and check valve thereof | |
| KR100367037B1 (en) | High - pressure fuel pump | |
| WO2019065998A1 (en) | High-pressure pump | |
| CN211737622U (en) | Hydraulic throttle valve | |
| CN115263707A (en) | Backflow type leakage-free plunger metering pump | |
| RU2699294C1 (en) | Sealing structure | |
| CN115030846B (en) | High-pressure fuel pump | |
| CN212656967U (en) | Emulsion plunger pump and pump head assembly thereof | |
| CN215672509U (en) | Plunger and barrel assembly of fuel injection pump and fuel injection pump thereof | |
| KR102406047B1 (en) | High-pressure valve | |
| CN111164299A (en) | High pressure pump | |
| EP4133949A1 (en) | Check valve on sub-machine of soda fountain | |
| CN216381672U (en) | Oil inlet and outlet mechanism for high-pressure oil supply pump, pump oil system and common rail oil supply pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |