CN219711705U - Static oil return-free oil sprayer - Google Patents
Static oil return-free oil sprayer Download PDFInfo
- Publication number
- CN219711705U CN219711705U CN202321331854.9U CN202321331854U CN219711705U CN 219711705 U CN219711705 U CN 219711705U CN 202321331854 U CN202321331854 U CN 202321331854U CN 219711705 U CN219711705 U CN 219711705U
- Authority
- CN
- China
- Prior art keywords
- oil
- valve body
- cavity
- opening
- needle 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.)
- Active
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 36
- 239000007924 injection Substances 0.000 claims abstract description 36
- 238000004891 communication Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 description 11
- 239000000446 fuel Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model relates to a static oil return-free oil sprayer, and relates to the technical field of oil sprayers; the oil injection valve comprises an oil injection valve body, a connecting seat and a needle valve seat, wherein a control needle valve is arranged in the oil injection valve body, a valve body cavity for placing the control needle valve is formed in the oil injection valve body, an oil injection port is formed in the bottom end of the needle valve seat, the oil injection port is communicated with the valve body cavity, an oil inlet channel is formed in the connecting seat, the control needle valve is in sliding connection with the inner wall of the valve body cavity, the control needle valve comprises an oil inlet body and a needle valve body, the bottom end of the oil inlet body is connected with the top end of the needle valve body, an oil inlet groove is formed in the top end of the oil inlet body, the top end of the oil inlet groove is communicated with the oil inlet channel, an opening and closing piece is further arranged at the lower end of the needle valve body, the oil inlet body slides downwards through the oil inlet groove and the valve body cavity, and the opening and closing piece is driven to open the oil injection port. The utility model has the following effects: the process of oil inlet can be unidirectional oil inlet, and small part of oil liquid blocked can continue to circulate downwards along with most of oil liquid.
Description
Technical Field
The utility model relates to the technical field of fuel injectors, in particular to a fuel injector without static return oil.
Background
The oil sprayer is a precise device with very high machining precision, and has the advantages of large dynamic flow range, strong anti-blocking and anti-pollution capabilities and good atomization performance when being used as a part for controlling oil quantity and oil spraying actions in a diesel engine.
There is a sprayer among the prior art, and it includes the sprayer body and sets up the control needle valve in the sprayer body, and the cavity has been seted up vertically in the sprayer body, and the top of the sprayer body is provided with the connecting seat, and the cavity has been seted up on the top of connecting seat, and the bottom of the sprayer body is provided with the needle disk seat, and the cavity has been seted up on the top of needle disk seat. The control needle valve comprises an upper end body and a lower end body, and the bottom end of the upper end body is connected with the top end of the lower end body. The diameter of the upper end body is larger than that of the lower end body, and the bottom end of the lower end body is pointed. The top of the upper end body extends into the connecting seat, a reset spring is sleeved on the top of the upper end body, and two ends of the reset spring are respectively connected with the upper end body and the inner top wall of the connecting seat. The control needle valve is positioned in the cavity of the oil sprayer body and is in sliding connection with the oil sprayer body, the upper end body is matched with the cavity in the oil sprayer body, the bottom end of the lower end body extends into the needle valve seat, the bottom end of the needle valve seat is provided with an oil injection port, and the bottom end of the lower end body can block the oil injection port. And an oil inlet pipeline is further arranged in the oil sprayer body, and one end of the oil inlet pipeline is communicated with the cavity in the oil sprayer body and is positioned below the upper end body. When the oil sprayer is used, oil is introduced into the oil inlet pipeline, the oil is introduced into the cavity of the oil sprayer body through the oil inlet pipeline, at the moment, the oil cannot be discharged because the oil injection port is blocked by the control needle valve, and therefore the oil can be abutted against the bottom wall of the lower end body to push the control needle valve to move upwards, at the moment, the reset spring is compressed, the oil injection port is opened by the control needle valve, and the oil is sprayed out from the oil injection port.
With respect to the related art, the inventor found that, due to the gap between the upper end body and the internal chamber of the oil injector body, after the oil pushes the upper end body to move upwards, a part of the oil flows upwards through the gap between the upper end body and the internal chamber of the oil injector body, and a static backflow phenomenon exists, so that a part of the oil enters the chamber in the connecting seat, and the flow of the oil sprayed out through the oil spraying port is reduced.
Disclosure of Invention
In order to reduce the probability of oil flowing upwards through a gap between a control needle valve and an internal cavity of an oil sprayer body, the utility model provides an oil sprayer without static oil return.
The utility model provides a static oil return-free oil sprayer, which adopts the following technical scheme:
the utility model provides a there is not sprayer of static oil return, includes oil spout valve body, connecting seat and needle disk seat, be provided with the control needle valve in the oil spout valve body, the internal confession that has offered of oil spout valve body the valve cavity that the control needle valve was placed, the oil spout has been seted up to the needle disk seat bottom, the oil spout with valve body cavity's inner wall sliding connection, the control needle valve includes oil feed body and needle valve body, the bottom of oil feed body with the top of needle valve body is connected, the oil feed groove has been seted up on the top of oil feed body, the top of oil feed groove with oil feed channel intercommunication, the lower extreme of needle valve body still is provided with the piece of opening and close, the oil feed body is through self downwardly sliding, control the oil feed groove with valve body cavity is located oil feed body below position intercommunication, and drive the piece of opening and closing the oil spout.
By adopting the technical scheme, when oil is required to be filled into the oil sprayer, oil flows into the oil inlet groove through the oil inlet channel, the oil inlet body is pushed to slide downwards, the displacement of the downward movement of the oil inlet body is controlled by controlling the quantity of oil input, when the oil inlet body moves downwards to a given position, the oil inlet groove is communicated with the position, below the oil inlet body, of the valve body cavity, at the moment, the oil flows into the position, below the oil inlet body, of the valve body cavity through the oil inlet groove, meanwhile, the opening and closing part opens the oil spraying port along with the movement of the control needle valve, and the oil is sprayed out through the oil spraying port; the oil inlet groove is arranged on the top end of the control needle valve, so that the introduced oil can circulate to the position of the valve body cavity below the oil inlet body through the oil inlet groove after the control needle valve slides, and is sprayed out through the oil spraying port, so that the oil inlet process is unidirectional oil inlet, small parts of the blocked oil can continue to circulate downwards along with most of the oil, the probability that the oil flows upwards through a gap between the control needle valve and the inner wall of the valve body cavity is reduced, and the probability that the oil flows out of the oil spraying port due to oil backflow is reduced.
Preferably, the needle valve seat is further provided with an opening and closing cavity, the opening and closing cavity is communicated with the valve body cavity, the opening and closing cavity is located above the oil injection port and is communicated with the oil injection port, the opening and closing member comprises an opening and closing ball, the opening and closing ball is connected with the bottom end of the needle valve body, the opening and closing ball is located in the opening and closing cavity, and the opening and closing ball can prop against the inner top wall of the opening and closing cavity to block the top end of the opening and closing cavity.
By adopting the technical scheme, when the opening and closing ball moves downwards along with the control needle valve, the opening and closing ball is in a state of being attached to the top wall of the opening and closing cavity, so that the top end of the opening and closing cavity is unblocked, the opening and closing cavity is communicated with the valve body cavity, and oil flows into the oil spraying port through the opening and closing cavity and is sprayed out from the oil spraying port; the opening and closing cavity and the opening and closing ball are arranged, so that the opening and closing ball can move together with the control needle valve, and the opening and closing of the oil injection port is realized.
Preferably, the oil inlet body is provided with a sliding block, the sliding block is matched with the valve body cavity and is attached to the inner wall of the valve body cavity, the oil injection valve body is internally provided with a communication cavity, the communication cavity is positioned below the oil inlet body and is communicated with the valve body cavity, and the sliding block slides into the communication cavity to realize that the oil inlet groove is communicated with the communication cavity.
By adopting the technical scheme, when oil liquid passes into the oil inlet groove, the needle valve is controlled to slide downwards under the pushing of the oil liquid, at the moment, the needle valve is controlled to drive the sliding block to slide and gradually slide into the communicating cavity, at the moment, the oil inlet groove is communicated with the communicating cavity, and the oil liquid reaches the communicating cavity through the oil inlet groove and passes into the part of the valve body cavity below the oil inlet body; the limiting block and the communicating cavity are arranged, so that the control needle valve can slide downwards to realize the communication between the oil inlet groove and the part of the valve body cavity below the oil inlet body.
Preferably, a limiting block is further arranged on the side wall of the communication cavity, the limiting block is located on the sliding path of the sliding block, and the top end of the limiting block can abut against the bottom wall of the sliding block.
Through adopting above-mentioned technical scheme, to the setting of stopper for thereby the stopper can offset with the bottom of sliding block realizes the spacing to the sliding block, thereby reduces because the sliding block slides too much and leads to the sliding block to block up the probability in valve body groove again.
Preferably, a reset spring is further sleeved on the needle valve body, one end of the reset spring is connected with the bottom wall of the limiting block, and the bottom end of the reset spring is connected with the inner wall of the valve body cavity.
Through adopting above-mentioned technical scheme, setting up reset spring can make the control valve body get back to initial position when not receiving fluid to drive the sliding block and open and close the ball and get back to initial position, realize the reclosing to the oil spout.
Preferably, a sealing ring is further arranged on the outer side wall of the sliding block.
Through adopting above-mentioned technical scheme, to the setting of sealing washer, can increase the leakproofness between sliding block and the valve body intracavity to reduce because the leakproofness between valve body cavity and the sliding block reduces and lead to controlling the probability that the needle valve is slided the volume too little.
Preferably, a guide surface is further arranged on the inner top wall of the opening and closing cavity.
Through adopting above-mentioned technical scheme, setting to the guide surface, can reduce and open and close the interior roof in chamber and open and close the mouth because of the collision, and the impaired probability of chamber and opening and close the mouth is opened and close to the normal operating of sprayer has effectively been guaranteed.
Preferably, a guide rod is further arranged at the top end of the oil inlet body, extends into the connecting seat and is in sliding connection with the inner wall of the connecting seat.
Through adopting above-mentioned technical scheme, setting to the guide bar, can play the guide effect to the slip of control needle valve, the existence of guide bar simultaneously can also reduce the control needle valve and break away from the probability of sliding the track, has effectively guaranteed the normal operating of sprayer.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. the oil inlet groove is arranged on the top end of the control needle valve, so that the introduced oil can circulate to the part of the valve body cavity below the oil inlet body through the oil inlet groove after the control needle valve slides, and is sprayed out through the oil spraying port, the oil inlet process is one-way oil inlet, a small part of blocked oil can continue to circulate downwards along with most of oil, the probability that the oil flows upwards through a gap between the control needle valve and the inner wall of the valve body cavity is reduced, and the probability that the flow of the oil sprayed out through the oil spraying port is reduced due to oil backflow is reduced;
2. the opening and closing cavity and the opening and closing ball are arranged, so that when the opening and closing ball moves downwards along with the control needle valve, the opening and closing ball is released from a state of being attached to the top wall of the opening and closing cavity initially and slides downwards, thereby releasing the blockage of the top end of the opening and closing cavity, enabling the opening and closing cavity to be communicated with the valve body cavity, enabling oil to circulate into an oil injection port through the opening and closing cavity, and then being sprayed out from the oil injection port, and realizing the opening and closing of the oil injection port;
3. the limiting block and the communicating cavity are arranged, so that the control needle valve can slide downwards to realize the communication between the oil inlet groove and the part of the valve body cavity below the oil inlet body.
Drawings
FIG. 1 is a schematic diagram of an overall fuel injector for implementing static-free return in an embodiment of the utility model.
Fig. 2 is a schematic view of a control needle valve according to an embodiment of the present utility model.
Reference numerals illustrate: 1. a fuel injection valve body; 11. a valve body cavity; 12. a communication chamber; 2. a connecting seat; 21. an oil inlet passage; 3. a needle valve seat; 31. an oil spraying port; 32. a connecting cavity; 33. opening and closing the cavity; 4. controlling a needle valve; 41. an oil inlet body; 411. an oil inlet groove; 42. a needle valve body; 43. an opening and closing member; 431. opening and closing the ball; 44. a guide rod; 45. a sliding block; 5. a seal ring; 6. a limiting block; 7. a return spring; 8. a connecting frame; 9. a guide surface.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-2.
The embodiment of the utility model discloses a static oil return-free oil sprayer. Referring to fig. 1 and 2, the static oil return-free oil injector comprises an oil injection valve body 1, a connecting seat 2 and a needle valve seat 3. The bottom of connecting seat 2 and the top fixed connection of oil spout valve body 1, the top of needle disk seat 3 and the bottom fixed connection of connecting seat 2, oil feed passageway 21 has been seted up on the top of connecting seat 2. The oil injection valve body 1 is internally provided with a control needle valve 4, the oil injection valve body 1 is internally provided with a valve body cavity 11 for placing the control needle valve 4, the valve body cavity 11 is vertically arranged, the bottom end of the needle valve seat 3 is provided with an oil injection port 31, the oil injection port 31 is communicated with the outside, and the oil injection port 31 is communicated with the valve body cavity 11. The control needle valve 4 is in sliding connection with the inner wall of the valve cavity 11, the control needle valve 4 comprises an oil inlet body 41 and a needle valve body 42, the bottom end of the oil inlet body 41 is fixedly connected with the top end of the needle valve body 42 through integral forming, an oil inlet groove 411 is formed in the top end of the oil inlet body 41, the top end of the oil inlet groove 411 is communicated with the oil inlet channel 21, an opening and closing piece 43 is further arranged at the lower end of the needle valve body 42, the oil inlet body 41 slides downwards through the control needle valve body 41, the oil inlet groove 411 is communicated with the position, below the oil inlet body 41, of the valve body cavity 11, and the opening and closing piece 43 is driven to open the oil injection port 31.
Referring to fig. 1 and 2, the top end of the oil inlet body 41 is further provided with a guide rod 44, the bottom end of the guide rod 44 is fixedly connected with the top end of the oil inlet body 41, and the top end of the guide rod 44 extends into the connecting seat 2 and is slidably connected with the connecting seat 2. The number of the oil inlet channels 21 is two, and the two oil inlet channels are respectively positioned at two sides of the guide rod 44, the oil inlet channels 21 are communicated with the valve body cavity 11, and the top ends of the oil inlet channels 21 are communicated with the outside of the connecting seat 2 so as to be filled with oil. The number of the oil inlet grooves 411 is three, the oil inlet grooves 411 are through grooves, and the oil inlet grooves 411 are arranged at equal angles along the circumference of the axis of the oil inlet body 41.
Referring to fig. 1 and 2, a communication cavity 12 is further formed in the oil injection valve body 1, the communication cavity 12 is located below the oil inlet body 41 in an initial state, the communication cavity 12 is a cylindrical cavity, the inner diameter of the communication cavity 12 is larger than the outer diameter of the valve body groove, the communication cavity 12 and the valve body cavity 11 are coaxially arranged, and the communication cavity 12 is communicated with the valve body cavity 11. The oil inlet body 41 is also provided with a sliding block 45, the sliding block 45 is fixedly sleeved with a sealing ring 5, the sealing ring 5 is fixedly sleeved on the side wall of the sliding block 45 through gluing, and the inner side wall of the sealing cavity is clung to the outer side wall of the sealing ring 5 to form sealing. When the sliding block 45 slides into the communication cavity 12, the seal ring 5 releases the seal of the valve body cavity 11, and the oil continues to circulate downwards through the communication cavity 12.
Referring to fig. 1 and 2, the inner bottom wall of the communication cavity 12 is further provided with four limiting blocks 6, preferably, the number of the limiting blocks 6 is four, the limiting blocks 6 are arranged at equal angles along the circumference of the axis of the communication cavity 12, the bottom wall of the limiting block 6 is fixedly connected with the inner bottom wall of the communication cavity 12 through welding, the limiting blocks 6 are located on the sliding path of the sliding block 45, and when the sliding block 45 slides downwards, the bottom wall of the sliding block 45 abuts against the top wall of the limiting block 6, so that limiting and locking of the sliding block 45 are achieved.
Referring to fig. 1 and 2, a return spring 7 and a connecting frame 8 are further arranged below the sliding block 45, the return spring 7 is sleeved on the needle valve body 42, the top end of the return spring 7 abuts against the top wall of the sliding block 45, the bottom end of the return spring 7 abuts against the top end of the connecting frame 8, and the shaft end of the connecting frame 8 is fixedly connected with the inner wall of the valve body cavity 11 through integral forming.
Referring to fig. 1 and 2, the top end of the needle valve seat 3 is further provided with a connecting cavity 32, the connecting cavity 32 is communicated with the valve cavity 11, the needle valve seat 3 is further internally provided with an opening and closing cavity 33, the opening and closing cavity 33 is positioned between the connecting cavity 32 and the oil injection port 31, the oil injection port 31 and the connecting cavity 32 are both communicated with the opening and closing cavity 33, and the top end of the opening and closing cavity 33 is provided with a guide surface 9. The bottom end of the needle valve body 42 extends into the opening and closing cavity 33 through the connecting cavity 32, the opening and closing member 43 comprises an opening and closing ball 431, the top end of the opening and closing ball 431 is fixedly connected with the bottom end of the needle valve body 42 through welding, and when the needle valve 4 is controlled to be in an initial state, the top end of the opening and closing ball 431 is attached to the inner top wall of the opening and closing cavity 33. When the opening and closing ball 431 moves downwards along with the control of the needle valve 4, the blockage of the top end of the opening and closing cavity 33 is removed, so that the opening and closing cavity 33 is communicated with the connecting cavity 32, and oil flows into the oil injection port 31 through the opening and closing cavity 33 and is sprayed out from the oil injection port 31.
The implementation principle of the static oil return-free oil sprayer provided by the embodiment of the utility model is as follows: when the oil inlet channel 21 is used, oil is input to the top end of the valve body cavity 11, at the moment, the oil pushes the control needle valve 4 to move downwards, at the moment, the opening and closing ball 431 is used for unblocking the opening and closing cavity 33, the sliding block 45 and the opening and closing ball 431 move downwards, and when the sliding block 45 slides into the communicating cavity 12, the oil flows to the oil injection port 31 through the oil inlet groove 411, the communicating cavity 12, the connecting cavity 32 and the opening and closing cavity 33 in sequence and is sprayed out from the oil injection port 31.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. The utility model provides a there is not sprayer of static oil return, includes oil spout valve body (1), connecting seat (2) and needle disk seat (3), be provided with control needle valve (4) in oil spout valve body (1), offer in oil spout valve body (1) valve body cavity (11) that control needle valve (4) placed, oil spout mouth (31) have been seted up to needle disk seat (3) bottom, oil spout mouth (31) with valve body cavity (11) intercommunication, its characterized in that: the oil inlet channel (21) has been seted up in connecting seat (2), control needle valve (4) with the inner wall sliding connection of valve body chamber (11), control needle valve (4) include oil feed body (41) and needle valve body (42), the bottom of oil feed body (41) with the top of needle valve body (42) is connected, oil feed groove (411) have been seted up on the top of oil feed body (41), the top of oil feed groove (411) with oil feed channel (21) intercommunication, the lower extreme of needle valve body (42) still is provided with headstock gear (43), oil feed body (41) are through self downwardly sliding, control oil feed groove (411) with valve body chamber (11) are located oil feed body (41) below position intercommunication, and drive headstock gear (43) open oil spout (31).
2. A static-free return-oil injector as claimed in claim 1, wherein: the needle valve seat (3) is internally provided with an opening and closing cavity (33), the opening and closing cavity (33) is communicated with the valve body cavity (11), the opening and closing cavity (33) is positioned above the oil injection port (31) and is communicated with the oil injection port (31), the opening and closing piece (43) comprises an opening and closing ball (431), the opening and closing ball (431) is connected with the bottom end of the needle valve body (42), the opening and closing ball (431) is positioned in the opening and closing cavity (33), and the opening and closing ball (431) can prop against the inner top wall of the opening and closing cavity (33) to block the top end of the opening and closing cavity (33).
3. A static-free return-oil injector as claimed in claim 2, wherein: be provided with sliding block (45) on advance oil body (41), sliding block (45) with valve body cavity (11) cooperate and with the inner wall in valve body cavity (11) pastes mutually, still seted up intercommunication chamber (12) in oil spout valve body (1), intercommunication chamber (12) are located advance the below of oil body (41), intercommunication chamber (12) with valve body cavity (11) intercommunication, sliding block (45) are through sliding to in intercommunication chamber (12), realize advance oil groove (411) with intercommunication chamber (12) communicates with each other.
4. A static-free return-oil injector as claimed in claim 3, wherein: the limiting block (6) is further arranged on the inner side wall of the communication cavity (12), the limiting block (6) is located on the sliding path of the sliding block (45), and the top end of the limiting block (6) can abut against the bottom wall of the sliding block (45).
5. A static-free return-oil injector as claimed in claim 3, wherein: the needle valve body (42) is further sleeved with a reset spring (7), one end of the reset spring (7) is connected with the bottom wall of the sliding block (45), and the bottom end of the reset spring (7) is connected with the inner wall of the valve body cavity (11).
6. A static-free return-oil injector as claimed in claim 3, wherein: and a sealing ring (5) is further arranged on the outer side wall of the sliding block (45).
7. A static-free return-oil injector as claimed in claim 2, wherein: the inner top wall of the opening and closing cavity (33) is also provided with a guide surface (9).
8. A static-free return-oil injector as claimed in claim 1, wherein: the top of the oil inlet body (41) is also provided with a guide rod (44), and the guide rod (44) extends into the connecting seat (2) and is in sliding connection with the connecting seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321331854.9U CN219711705U (en) | 2023-05-29 | 2023-05-29 | Static oil return-free oil sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321331854.9U CN219711705U (en) | 2023-05-29 | 2023-05-29 | Static oil return-free oil sprayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219711705U true CN219711705U (en) | 2023-09-19 |
Family
ID=87995994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321331854.9U Active CN219711705U (en) | 2023-05-29 | 2023-05-29 | Static oil return-free oil sprayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219711705U (en) |
-
2023
- 2023-05-29 CN CN202321331854.9U patent/CN219711705U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103237985B (en) | For measuring the ratio radiacmeter of the auxiliary liquid entered in main liquid | |
| CN104018964B (en) | Pressure accumulation current-limiting type piezoelectric control fuel injector | |
| CN104018966A (en) | Pressure accumulation flow-limiting type electromagnetic control oil sprayer | |
| CN105673282B (en) | Pressure balance valve type common-rail injector | |
| CN104481767A (en) | Novel common-rail oil injector | |
| CN102066740A (en) | A fuel injector with an improved valve control arrangement | |
| CN104265534A (en) | Oil injecting speed-variable common rail system oil injector | |
| US5094397A (en) | Unit fuel injector with injection chamber spill valve | |
| CN219711705U (en) | Static oil return-free oil sprayer | |
| CN101251067B (en) | Tappet rod type high pressure co-rail electric-controlled oil ejector | |
| CN203175733U (en) | Control jet flat valve structure of electronic control fuel injector | |
| CN203892092U (en) | Pressure accumulating and flow limiting electromagnetic control oil atomizer | |
| CZ20011397A3 (en) | Injector for common rail fuel injection system | |
| CN104775954B (en) | Oil-return-free common-rail injector controlled by electromagnetic valve | |
| WO2020098179A1 (en) | Plunger fuel injector and internal combustion engine | |
| CN110017230A (en) | A kind of electro-hydraulic joint control rapid response type high pressure common rail injector | |
| CN108506130B (en) | Fuel injector capable of reducing dynamic leakage of high-pressure common rail fuel | |
| CN102996309A (en) | High-pressure common rail oil sprayer | |
| CN212318196U (en) | Control valve sleeve with quick switching function | |
| CN104265533A (en) | Novel common rail oil injector | |
| CN208040600U (en) | A kind of common-rail injector | |
| CN203925839U (en) | Pressure accumulation current-limiting type piezoelectric control fuel injector | |
| CN204610114U (en) | Without static leakage oil sprayer | |
| CN209067392U (en) | A kind of plunger fuel injector and internal combustion engine | |
| CN206917788U (en) | A kind of oil nozzle couple, fuel injector and automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |