CN112431699A - Matching parts high pressure flow measuring device of long needle valve fuel sprayer - Google Patents
Matching parts high pressure flow measuring device of long needle valve fuel sprayer Download PDFInfo
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- CN112431699A CN112431699A CN202011263855.5A CN202011263855A CN112431699A CN 112431699 A CN112431699 A CN 112431699A CN 202011263855 A CN202011263855 A CN 202011263855A CN 112431699 A CN112431699 A CN 112431699A
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- Prior art keywords
- needle valve
- long needle
- oil
- accommodating cavity
- pressure flow
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
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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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
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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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/001—Measuring fuel delivery of a fuel injector
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to the technical field of flow measurement of an internal combustion engine fuel injector, and discloses a matching part high-pressure flow measurement device of a long needle valve fuel injection nozzle, which comprises: a clamp body; the first end of the clamp body extends into the accommodating cavity and is detachably connected with the fuel injector body, and a boss is arranged in the accommodating cavity; the adjusting ring is arranged in the accommodating cavity and clamped between the boss and the clamp body; the long needle valve is arranged in the accommodating cavity, and high-pressure fuel oil is introduced into the accommodating cavity to drive the long needle valve to move towards the direction close to the clamp body; the needle valve body is provided with a central cavity, the needle valve body is connected to one end, far away from the clamp body, of the fuel injector body in a sealing mode, and one end, far away from the clamp body, of the long needle valve is inserted into the central cavity. The adjusting ring with the proper thickness can be selected according to the lift of the long needle valve, the clamp body and the fuel injector body do not need to be replaced, and the universality is high; and the structure is compact, the requirement on the environment is low, and the application range of the device is wider.
Description
Technical Field
The invention relates to the technical field of flow measurement of an internal combustion engine fuel injector, in particular to a matching part high-pressure flow measurement device of a long needle valve fuel injection nozzle.
Background
In the process of developing an internal combustion engine, the high-pressure flow of a matching part of an oil nozzle of a long needle valve needs to be measured, the high-pressure flow of the matching part of the oil nozzle of the long needle valve is estimated and examined by measuring the flow of a valve body of the needle valve in the traditional mode, the flow of the matching part cannot be accurately and directly measured by the technology, and certain measurement errors exist. Meanwhile, the high-pressure flow measuring device of the middle oil inlet type oil nozzle matching part can only measure the flow value of the matching part under the maximum lift range and cannot measure the high-pressure flow of the matching part under various lift ranges.
In order to solve the problems, the Chinese patent discloses a long needle valve fuel sprayer matching part high-pressure flow measuring device (CN109882331A), which comprises a clamp body, a clamping sleeve, a fine adjustment knob, a supporting measuring head and a flow measuring device, and is characterized in that: the clamp body is connected with the clamping sleeve through a connecting piece, the rear end of the clamping sleeve is connected with the locking sleeve through threads, and the rear end of the locking sleeve is connected with the sealing joint through threads; a long needle valve capable of sliding back and forth is arranged in the clamping sleeve, the front end of the long needle valve is connected with an oil nozzle, the oil nozzle is embedded in a supporting measuring head, the supporting measuring head is embedded in a screwing sleeve, and the screwing sleeve is connected to the clamp body through threads; the front end of the supporting measuring head is connected with the flow measuring device, and the supporting measuring head is provided with an oil injection channel communicated with the flow measuring device and an oil injection nozzle; the fine adjustment knob is connected with the sealing joint through threads, the front end of the fine adjustment knob is contacted with the rear end face of the long needle valve, and the rear end of the fine adjustment knob is connected with the displacement sensor. The measuring device can measure the high-pressure flow of the long needle valve oil nozzle matching part under different lift ranges, so that the flow stability and consistency of the long needle valve oil nozzle matching part can be independently checked.
However, this kind of high pressure flow measuring device is applicable to the higher equipment of degree of automation, and the structure is complicated, and the manufacturing degree of difficulty is big, and the dress presss from both sides the cover and needs the independent design according to the long needle valve of different grade type, and the suitability is poor, leads to the test cost height.
Therefore, a high pressure flow measuring device for a coupler of a fuel injection nozzle of a long needle valve is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a matching part high-pressure flow measuring device of a long needle valve oil nozzle, which has the advantages of strong universality, compact structure, lower requirement on environment and wider application range.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a couple high pressure flow measuring device of valve oil nozzle of spike, includes:
a clamp body;
the first end of the clamp body extends into the accommodating cavity and is detachably connected with the fuel injector body, and a boss is arranged in the accommodating cavity;
the adjusting ring is arranged in the accommodating cavity and clamped between the boss and the clamp body;
the long needle valve is arranged in the accommodating cavity, and high-pressure fuel oil is introduced into the accommodating cavity to drive the long needle valve to move towards the direction close to the clamp body;
the needle valve body is provided with a central cavity, the needle valve body is connected to one end, far away from the clamp body, of the oil sprayer body in a sealing mode, and one end, far away from the clamp body, of the long needle valve is inserted into the central cavity.
As a preferred technical scheme of the matching part high-pressure flow measuring device of the long needle valve oil nozzle, the matching part high-pressure flow measuring device further comprises a sealing orifice plate which is arranged in the accommodating cavity, and the sealing orifice plate is located between the clamp body and the adjusting ring.
As an optimal technical scheme of a matching part high-pressure flow measuring device of a long needle valve oil nozzle, a first oil return hole is formed in the clamp body, a second oil return hole communicated with the first oil return hole is formed in the sealing orifice plate, an oil inlet of the second oil return hole is located in the axis of the sealing orifice plate, and high-pressure fuel oil introduced into the containing cavity can drive the long needle valve to move towards the direction of the sealing orifice plate.
As an optimal technical scheme of a matching part high-pressure flow measuring device of a long needle valve oil nozzle, a first oil inlet hole is formed in the clamp body, a second oil inlet hole communicated with the first oil inlet hole is formed in the sealing hole plate, an oil outlet of the second oil inlet hole is located on one side of an oil inlet of the second oil return hole, and high-pressure fuel oil can be injected into the containing cavity through the first oil inlet hole and the second oil inlet hole.
As a preferable technical scheme of the matching part high-pressure flow measuring device of the long needle valve oil nozzle, the oil outlet of the second oil inlet hole is at least partially positioned on the inner side of the adjusting ring.
The matching part high-pressure flow measuring device of the long needle valve oil nozzle also comprises an elastic part which is arranged in the accommodating cavity and is used for driving the long needle valve to move towards the direction far away from the sealing orifice plate; high-pressure fuel oil introduced into the accommodating cavity can drive the long needle valve to overcome the elastic force of the elastic piece (8) and move towards the direction of the sealing pore plate.
As an optimal technical scheme of a matching part high-pressure flow measuring device of a long needle valve oil nozzle, the matching part high-pressure flow measuring device further comprises a guide sealing sleeve, the guide sealing sleeve is sleeved on one end, close to the clamp body, of the long needle valve, and two ends of the elastic part are respectively abutted to one end, far away from the clamp body, of the guide sealing sleeve and a shaft shoulder of the long needle valve.
As an optimal technical scheme of a matching part high-pressure flow measuring device of a long needle valve oil nozzle, the matching part high-pressure flow measuring device further comprises a gasket, wherein the gasket is sleeved on the long needle valve and is positioned between the elastic part and the shaft shoulder.
As a preferred technical scheme of the matching part high-pressure flow measuring device of the long needle valve oil nozzle, the matching part high-pressure flow measuring device further comprises a fastening cap which is sleeved on the needle valve body and fixed on the oil injector body, wherein one end of the fastening cap is inwards convexly provided with a stopping bulge, and the stopping bulge is abutted against the needle valve body.
As a preferred technical scheme of the matching part high-pressure flow measuring device of the long needle valve oil nozzle, the clamp body is in threaded connection with the oil injector body.
The invention has the beneficial effects that:
the measuring device can realize the flow test of the long needle valve matching parts under high pressure and even ultrahigh pressure, and the high-pressure flow consistency of the batch of long needle valve matching parts can be obtained through the test result so as to ensure the consistency of the ejectors; the adjusting ring with proper thickness can be selected according to the lift of the long needle valve, and the clamp body and the fuel injector body do not need to be replaced, so that the measuring device has stronger universality; the measuring device has the advantages of compact structure, low requirement on environment, wider application range, simple structure and low manufacturing cost.
Moreover, the accumulated oil in the guide sealing sleeve can be discharged in time, so that the measurement can be carried out for a long time and for many times without time limitation.
Drawings
FIG. 1 is a schematic structural diagram of a high-pressure flow measuring device for a matching part of an oil nozzle of a long needle valve provided by the invention.
In the figure: 1. a clamp body; 101. a first oil inlet hole; 102. a first oil return hole; 103. an annular groove; 2. a fuel injector body; 3. an adjustment ring; 4. a long needle valve; 5. a needle valve body; 501. an oil spray hole; 6. sealing the orifice plate; 601. a second oil inlet hole; 602. a second oil return hole; 8. an elastic member; 9. a guide sealing sleeve; 10. a gasket; 11. a fastening cap; 1101. a stop protrusion.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. 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 also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
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.
As shown in fig. 1, the present embodiment discloses a matching part high pressure flow measuring device of a long needle valve injection nozzle, which includes a fixture body 1, an injector body 2, an adjusting ring 3, a long needle valve 4 and a sealing orifice plate 6.
The sprayer body 2 is provided with and holds the chamber, holds the chamber and is both ends open-ended cavity. The accommodating cavity is internally provided with a boss, the top end of the accommodating cavity is in a step shape, and the step surface of the accommodating cavity is provided with the boss. The first end of the fixture body 1 extends into the accommodating cavity and is detachably connected with the fuel injector body 2, and the first end and the second end are in threaded connection. Specifically, the first end of the clamp body 1 is provided with an external thread, and an internal thread is arranged on the inner wall of the top end of the accommodating cavity.
Adjusting ring 3 and sealed orifice plate 6 all set up and are holding the intracavity, and adjusting ring 3 is by the centre gripping between boss and the anchor clamps body 1, and sealed orifice plate 6 is located between anchor clamps body 1 and adjusting ring 3. The boss is in plane seal with the lower surface of the adjusting ring 3, the upper surface of the adjusting ring 3 is in plane seal with the lower surface of the sealing orifice plate 6, and the end face of the first end of the clamp body 1 is in plane seal with the upper surface of the sealing orifice plate 6.
The long needle valve 4 is arranged in the accommodating cavity, and high-pressure fuel oil is introduced into the accommodating cavity to drive the long needle valve 4 to move towards the direction close to the clamp body 1.
The fixture body 1 is provided with a first oil return hole 102, the sealing orifice plate 6 is provided with a second oil return hole 602 communicated with the first oil return hole 102, an oil inlet of the second oil return hole 602 is located at the axis of the sealing orifice plate 6, and an oil inlet of the first oil return hole 102 is located at the axis of the fixture body 1. The high-pressure fuel introduced into the accommodating cavity can drive the long needle valve 4 to move towards the direction close to the clamp body 1.
The fixture body 1 is provided with a first oil inlet hole 101, the sealing hole plate 6 is provided with a second oil inlet hole 601 communicated with the first oil inlet hole 101, the end face of the first end of the fixture body 1 is provided with an annular groove 103, and an oil outlet of the first oil inlet hole 101 is located at the bottom of the annular groove 103. An oil outlet of the second oil inlet hole 601 is located on one side of an oil inlet of the second oil return hole 602, and the oil inlet is arranged right opposite to the annular groove 103 so as to communicate the first oil inlet hole 101 and the second oil inlet hole 601. The annular groove 103 is formed in the first end surface of the fixture body 1, so that the first oil inlet hole 101 and the second oil inlet hole 601 can be communicated without fixing and adjusting the position of the second oil inlet hole 601 in advance. High-pressure fuel can enter the accommodating cavity through the first oil inlet hole 101 and the second oil inlet hole 601. The oil outlet of the second oil inlet hole 601 is at least partially located in the adjusting ring 3, most of the oil outlet is located in the adjusting ring 3 in the embodiment, and the oil outlet does not have a portion located outside the adjusting ring 3, so that the high-pressure fuel can be ensured to enter the accommodating cavity.
Preferably, the matching part high-pressure flow measuring device of the long needle valve oil nozzle further comprises an elastic part 8, a guide sealing sleeve 9 and a gasket 10, wherein the guide sealing sleeve 9 is sleeved at one end, close to the clamp body 1, of the long needle valve 4, and the top end of the guide sealing sleeve is in plane sealing with the sealing orifice plate 6. The elastic piece 8 is arranged in the accommodating cavity and is used for driving the long needle valve 4 to move away from the clamp body 1. The elastic member 8 is preferably a coil spring, which is fitted over the long needle valve 4. Two ends of the elastic part 8 are respectively abutted against one end of the guide sealing sleeve 9 far away from the clamp body 1 and a shaft shoulder of the long needle valve 4. The gasket 10 is sleeved on the long needle valve 4 and located between the elastic element 8 and the shaft shoulder, and the gasket 10 can prevent the elastic element 8 from directly contacting the shaft shoulder, so that the elastic element 8 is prevented from damaging the shaft shoulder.
Preferably, the matching parts high pressure flow measuring device of the long needle valve oil nozzle further comprises a needle valve body 5 and a fastening cap 11, a central cavity is arranged on the needle valve body 5, and the needle valve body 5 is connected to one end, far away from the clamp body 1, of the oil injector body 2 in a sealing mode, and specifically, the needle valve body 5 and the end are in plane contact and plane sealing. One end of the long needle valve 4 far away from the clamp body 1 is inserted into the central cavity. An oil injection hole 501 is arranged at one end of the needle valve body 5 far away from the oil injector body 2. The fastening cap 11 is sleeved on the needle valve body 5 and fixed on the fuel injector body 2, one end of the fastening cap 11 is provided with a stop protrusion 1101 in an inward protruding manner, the stop protrusion 1101 abuts against the needle valve body 5, and the fastening cap 11 can drive the needle valve body 5 to abut against the fuel injector body 2 so that the needle valve body 5 and the fuel injector body are tightly attached.
And selecting an adjusting ring 3 with proper thickness according to the lift of the long needle valve 4, and installing the adjusting ring 3 between the clamp body 1 and the boss. Then, high-pressure fuel is introduced into the accommodating cavity through the first oil inlet hole 101 and the second oil inlet hole 601, the high-pressure fuel drives the long needle valve 4 to move upwards against the elastic force of the elastic element 8, and the fuel enters the flowmeter after being injected and records a flow value. After the test is finished, high-pressure fuel is not conveyed to the first oil inlet hole 101 and the second oil inlet hole 601, the elastic piece 8 drives the long needle valve 4 to be not abutted to the sealing orifice plate 6 and to be seated, fuel at the gap between the guide sealing sleeve 9 and the long needle valve 4 enters the cavity of the guide sealing sleeve 9, and when the high-pressure fuel is introduced next time to drive the long needle valve 4 to be abutted to the sealing orifice plate 6, the fuel in the guide sealing sleeve 9 is discharged through the second oil return hole 602 and the first oil return hole 102, so that the problem of inaccurate measurement result caused by the fact that the guide sealing sleeve 9 cannot move in place due to oil accumulation after a period of test can be effectively solved.
The measuring device can realize the flow test of the long needle valve matching parts under high pressure and even ultrahigh pressure, and the high-pressure flow consistency of the batch of long needle valve matching parts can be obtained through the test result so as to ensure the consistency of the ejectors; the adjusting ring 3 with proper thickness can be selected according to the lift of the long needle valve 4, and the clamp body 1, the fuel injector body 2 and the sealing orifice plate 6 do not need to be replaced, so that the measuring device has stronger universality; the measuring device has compact structure and lower requirement on environment, so that the application range of the measuring device is wider; the accumulated oil in the guide sealing sleeve 9 can be discharged in time, and the measurement can be carried out for a long time and for many times without time limitation.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a idol high pressure flow measurement device of valve oil nozzle which comprises:
a clamp body (1);
the fuel injector comprises a fuel injector body (2) which is provided with an accommodating cavity, wherein a first end of the clamp body (1) extends into the accommodating cavity and is detachably connected with the fuel injector body (2), and a boss is arranged in the accommodating cavity;
the adjusting ring (3) is arranged in the accommodating cavity, and the adjusting ring (3) is clamped between the boss and the clamp body (1);
the long needle valve (4) is arranged in the accommodating cavity, and high-pressure fuel oil is introduced into the accommodating cavity to drive the long needle valve (4) to move towards the direction close to the clamp body (1);
needle valve body (5), it is provided with the central cavity, needle valve body (5) sealing connection in sprayer body (2) is kept away from the one end of anchor clamps body (1), long needle valve (4) are kept away from the one end of anchor clamps body (1) insert in the central cavity.
2. The coupler high-pressure flow measuring device of the oil nozzle of the long needle valve is characterized by further comprising a sealing orifice plate (6) arranged in the accommodating cavity, wherein the sealing orifice plate (6) is positioned between the clamp body (1) and the adjusting ring (3).
3. The matching part high-pressure flow measuring device of the long needle valve oil nozzle is characterized in that a first oil return hole (102) is formed in the fixture body (1), a second oil return hole (602) communicated with the first oil return hole (102) is formed in the sealing orifice plate (6), an oil inlet of the second oil return hole (602) is located at the axis of the sealing orifice plate (6), and high-pressure fuel oil introduced into the accommodating cavity can drive the long needle valve (4) to move towards the direction of the sealing orifice plate (6).
4. The matching part high-pressure flow measuring device of the long needle valve oil nozzle is characterized in that a first oil inlet hole (101) is formed in the fixture body (1), a second oil inlet hole (601) communicated with the first oil inlet hole (101) is formed in the sealing orifice plate (6), an oil outlet of the second oil inlet hole (601) is located on one side of an oil inlet of the second oil return hole (602), and high-pressure fuel oil can be injected into the accommodating cavity through the first oil inlet hole (101) and the second oil inlet hole (601).
5. The coupler high-pressure flow measuring device of the oil nozzle of the long needle valve is characterized in that an oil outlet of the second oil inlet hole (601) is at least partially positioned on the inner side of the adjusting ring (3).
6. The pair of high-pressure flow measuring devices of the long needle valve oil nozzle is characterized by further comprising an elastic member (8) which is arranged in the accommodating cavity and is used for driving the long needle valve (4) to move away from the sealing orifice plate (6); high-pressure fuel oil introduced into the accommodating cavity can drive the long needle valve (4) to overcome the elastic force of the elastic piece (8) and move towards the direction of the sealing orifice plate (6).
7. The matching part high-pressure flow measuring device of the long needle valve oil nozzle is characterized by further comprising a guide sealing sleeve (9) which is sleeved at one end, close to the clamp body (1), of the long needle valve (4), and two ends of the elastic part (8) are respectively abutted to one end, far away from the clamp body (1), of the guide sealing sleeve (9) and a shaft shoulder of the long needle valve (4).
8. The matching part high-pressure flow measuring device of the long needle valve oil nozzle of claim 7 is characterized by further comprising a gasket (10) which is sleeved on the long needle valve (4) and is positioned between the elastic part (8) and the shaft shoulder.
9. The pair of high-pressure flow measuring devices for the oil nozzle of the long needle valve according to claim 1, further comprising a fastening cap (11) sleeved on the needle valve body (5) and fixed on the oil injector body (2), wherein one end of the fastening cap (11) is provided with a stop protrusion (1101) in an inward protruding manner, and the stop protrusion (1101) abuts against the needle valve body (5).
10. The matching high-pressure flow measuring device of a long needle valve injection nozzle according to claim 1, characterized in that the clamp body (1) is screwed to the injector body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011263855.5A CN112431699B (en) | 2020-11-12 | 2020-11-12 | Matching parts high pressure flow measuring device of long needle valve fuel sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011263855.5A CN112431699B (en) | 2020-11-12 | 2020-11-12 | Matching parts high pressure flow measuring device of long needle valve fuel sprayer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112431699A true CN112431699A (en) | 2021-03-02 |
| CN112431699B CN112431699B (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011263855.5A Active CN112431699B (en) | 2020-11-12 | 2020-11-12 | Matching parts high pressure flow measuring device of long needle valve fuel sprayer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943501A (en) * | 2021-04-28 | 2021-06-11 | 一汽解放汽车有限公司 | Flow testing device and method for oil nozzle matching parts |
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| CN109882331A (en) * | 2019-02-28 | 2019-06-14 | 一汽解放汽车有限公司 | A kind of long needle valve spray nozzle coupler high pressure flow measuring device |
| CN210152815U (en) * | 2019-02-02 | 2020-03-17 | 北京利达瑞斯科技有限公司 | Adjusting mechanism for lift of matching parts |
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2020
- 2020-11-12 CN CN202011263855.5A patent/CN112431699B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10241462A1 (en) * | 2002-09-06 | 2004-03-18 | Robert Bosch Gmbh | Fuel injector for internal combustion engines has end face of nozzle needle and/or stop face of shut-off component interacting with it constructed so that in open position of nozzle needle point-form contact face is formed between them |
| DE102004020550A1 (en) * | 2004-04-27 | 2005-11-24 | Robert Bosch Gmbh | injection |
| CN109578186A (en) * | 2018-11-29 | 2019-04-05 | 汽解放汽车有限公司 | A kind of low oil return high pressure common rail injector |
| CN210152815U (en) * | 2019-02-02 | 2020-03-17 | 北京利达瑞斯科技有限公司 | Adjusting mechanism for lift of matching parts |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943501A (en) * | 2021-04-28 | 2021-06-11 | 一汽解放汽车有限公司 | Flow testing device and method for oil nozzle matching parts |
| CN112943501B (en) * | 2021-04-28 | 2022-03-08 | 一汽解放汽车有限公司 | Flow testing device and method for oil nozzle matching parts |
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| CN112431699B (en) | 2021-12-24 |
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