A high-reliability lightweight fuel injector valve assembly

Abstract

The utility model relates to fuel injector technical field especially relates to a kind of high-reliability light-weight fuel injector valve assembly, including valve assembly, the valve assembly is by valve stem and valve seat composition, the supporting disc surface is penetrated and is equipped with weight-reducing groove, the valve seat inside is equipped with balance groove;The utility model is by equipping balance groove in valve seat inside, first, the contact area between valve stem and valve seat can be reduced, further reduce the friction between valve stem and valve seat, avoid the jam situation that valve stem appears due to friction problem, make valve stem in the operation process can respond in time, guarantee the reliability of valve stem and valve seat in the operation process, second, because the friction between valve stem and valve seat reduces, the expansion time of valve stem and valve seat friction position can be reduced, avoid fuel from the position where valve stem and valve seat rubs leaks, further guarantee the stability of fuel injector operation, further guarantee the operation reliability of valve assembly.

Description

Technical Field

[0001] This utility model relates to the field of fuel injector technology, and in particular to a highly reliable and lightweight fuel injector valve assembly. Background Technology

[0002] A fuel injector is a precision device used to supply fuel to an engine. Its function is to inject fuel into the combustion chamber at a certain pressure, speed and direction, so that the fuel is atomized into fine particles and properly distributed in the combustion chamber to facilitate the formation and combustion of the air-fuel mixture.

[0003] In the operation of fuel injectors, the valve assembly is one of the most important components. Because the valve stem is typically slender, to prevent bending due to excessive pressure and to ensure operational stability, the valve assembly is usually constructed as a single unit with a solid valve stem. While this ensures strength, it also results in a significant overall weight. Furthermore, the high-frequency reciprocating motion of the valve stem within the valve seat causes wear at the contact area, leading to potential jamming and further impacting its performance. Over time, the wear on the valve stem and seat increases, causing fuel leakage and unstable injection pressure, further reducing the reliability of the valve assembly.

[0004] Therefore, we provide a highly reliable, lightweight injector valve assembly. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a highly reliable and lightweight injector valve assembly, thereby reducing the weight of the valve assembly and improving its operational reliability.

[0006] In view of this, the present invention provides a highly reliable and lightweight injector valve assembly, including a valve assembly consisting of a valve stem and a valve seat. The valve stem has a support plate and a transition connecting plate inside. The surface of the support plate has a weight reduction groove, and the valve seat has a balance groove inside.

[0007] Preferably, one end of the valve stem is inserted into the interior of the valve seat, and the end of the valve stem located inside the valve seat moves within the interior of the valve seat.

[0008] Preferably, there are several balancing grooves, which are equidistantly distributed on the same vertical plane inside the valve seat. The balancing grooves are concentrated at the positions where the valve stem contacts the inner wall of the valve seat the most during the movement of the valve stem.

[0009] Preferably, the valve stem is hollow inside, and there are several transition connecting plates, which are linearly and equidistantly distributed inside the valve stem.

[0010] Preferably, there are several weight-reducing grooves, and the several weight-reducing grooves are arranged in a honeycomb pattern on the surface of the support plate.

[0011] Preferably, the transition connecting plate is X-shaped and is located at the diameter change position of the valve stem.

[0012] Compared with the prior art, this utility model provides a highly reliable and lightweight injector valve assembly, which has the following advantages:

[0013] 1. This utility model, by creating a balance groove inside the valve seat, firstly reduces the contact area between the valve stem and the valve seat, further reducing the friction between them and preventing the valve stem from getting stuck due to friction. This allows the valve stem to respond promptly during operation, ensuring the reliability of the valve stem and valve seat during operation. Secondly, the reduced friction between the valve stem and valve seat shortens the expansion time of the friction point, preventing fuel leakage from the friction point and further ensuring the stability of the injector operation and the reliability of the valve assembly.

[0014] 2. This utility model, through its hollow valve stem and support plate with weight-reducing grooves, further reduces the overall weight of the valve stem compared to the traditional solid structure, thus achieving a lightweight effect. The lightweight valve stem further reduces its inertia during operation, ensuring reliability. Simultaneously, the lightweight valve stem allows for a faster response during operation, further guaranteeing reliability and injector stability. Furthermore, the cooperation of the support plate, transition connecting plate, and weight-reducing grooves ensures that the overall strength of the valve stem is not reduced after achieving lightweight design, further guaranteeing stability and preventing situations where the valve stem's strength is insufficient due to lightweight design, thus further ensuring reliability during operation.

[0015] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a high-reliability lightweight injector valve assembly proposed in this utility model.

[0017] Figure 2This is a schematic diagram of the internal structure of the valve seat of a high-reliability, lightweight injector valve assembly proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the valve stem of a high-reliability, lightweight injector valve assembly proposed in this utility model.

[0019] Figure 4 This is an enlarged structural diagram of point A of a high-reliability, lightweight injector valve assembly proposed in this utility model.

[0020] In the diagram: 1. Valve assembly; 2. Valve stem; 3. Valve seat; 4. Balance groove; 5. Support plate; 6. Transition connecting plate; 7. Weight reduction groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Example: A high-reliability, lightweight injector valve assembly, such as Figures 1-4 As shown, the valve assembly includes a valve assembly 1, which consists of a valve stem 2 and a valve seat 3. The valve stem 2 has a support plate 5 and a transition connecting plate 6 inside. The surface of the support plate 5 has a weight reduction groove 7 through it, and the valve seat 3 has a balance groove 4 inside it.

[0024] One end of the valve stem 2 is inserted into the interior of the valve seat 3, and the end of the valve stem 2 located inside the valve seat 3 moves within the valve seat 3.

[0025] There are several balance grooves 4, which are equidistantly distributed on the same vertical plane inside the valve seat 3. The balance grooves 4 are concentrated at the positions where the valve stem 2 contacts the inner wall of the valve seat 3 the most during its movement.

[0026] During the operation of valve assembly 1, one end of valve stem 2 continuously reciprocates inside valve seat 3. Because a portion of the inner wall of valve seat 3 is always in contact with the outer surface of valve stem 2 during this reciprocating motion, the contact area between the inner wall of valve seat 3 and the outer surface of valve stem 2 is further reduced by the addition of a balance groove 4. This reduces the friction between valve stem 2 and valve seat 3, preventing jamming caused by excessive friction. Simultaneously, the balance groove 4 allows some fuel to be retained inside valve seat 3, providing lubrication between valve seat 3 and valve stem 2, further reducing friction and improving the stability of valve stem 2 during operation. Qualitatively, by creating a balance groove 4 at the position where the valve stem 2 and valve seat 3 have the most contact, the grooving range of the valve seat 3 can be further reduced, thus further ensuring the strength of the valve seat 3. By creating a balance groove 4 inside the valve seat 3, firstly, the contact area between the valve stem 2 and valve seat 3 can be reduced, further reducing the friction between the valve stem 2 and valve seat 3, avoiding the valve stem 2 from getting stuck due to friction, and enabling the valve stem 2 to respond promptly during operation, ensuring the reliability of the valve stem 2 and valve seat 3 during operation. Secondly, because the friction between the valve stem 2 and valve seat 3 is reduced, the expansion time of the friction position between the valve stem 2 and valve seat 3 can be reduced, preventing fuel from leaking from the friction position between the valve stem 2 and valve seat 3, further ensuring the stability of the injector operation, and further ensuring the operational reliability of the valve assembly 1.

[0027] like Figures 1-4 As shown, the valve stem 2 is hollow inside, and there are several transition connecting plates 6, which are linearly and equidistantly distributed inside the valve stem 2.

[0028] There are several weight-reducing grooves 7, and these grooves 7 are arranged in a honeycomb pattern on the surface of the support plate 5.

[0029] The transition connecting plate 6 is X-shaped and is located at the diameter change position of the valve stem 2.

[0030] To fundamentally reduce the weight of valve assembly 1, the valve stem 2 is designed as a hollow shape, optimizing the overall weight of the valve stem 2 from the source and ensuring the lightweight of valve assembly 1. However, due to the reduced wall thickness of the valve stem 2, to ensure the overall strength of the valve stem 2 and prevent the valve stem 2 from bending due to excessive external pressure during operation, a support plate 5 and a transition connecting plate 6 are installed inside the valve stem 2. When the valve stem 2 reciprocates, the valve stem 2 body will be subjected to a certain pressure. With the connection of the support plate 5, it can play a supporting role inside the valve stem 2, further improving the strength of the valve stem 2. At the same time, a honeycomb arrangement of weight-reducing grooves 7 is set, which firstly reduces the weight of the support plate 5, further ensuring the lightweight effect of the valve stem 2. Secondly, by setting the weight-reducing groove 7, the support plate 5 has a buffer area when under force, allowing the support plate 5 to deform to a certain extent. This prevents the valve stem 2 from being directly subjected to excessive force, which could lead to pressure stagnation and bending of the valve stem 2. Because the valve stem 2 adopts a hollow design, the diameter change area of ​​the valve stem 2 becomes a pressure concentration area. By setting the transition connecting plate 6, a protective effect can be formed at the diameter change position of the valve stem 2. The X-shaped transition connecting plate 6 can disperse the pressure in the diameter change area of ​​the valve stem 2, further improving the strength of the valve stem 2 at the diameter change position and preventing damage caused by excessive pressure concentration at the diameter change position of the valve stem 2. This further ensures the stability of the valve stem 2 during operation. The hollow valve stem 2 and the support plate 5 with the weight-reducing groove 7 provide a relatively stable design. Compared to the traditional solid structure, the overall weight of the valve stem 2 can be further reduced, thus achieving a lightweight effect. The lightweight design of the valve stem 2 further reduces its inertia during operation, ensuring its reliability. Simultaneously, the lightweight valve stem 2 allows for a faster response during operation, further guaranteeing its reliability and the stability of the fuel injector. Furthermore, the cooperation of the support plate 5, transition connecting plate 6, and weight-reducing groove 7 ensures that the overall strength of the valve stem 2 is not reduced after achieving lightweighting, further guaranteeing its stability during operation and preventing situations where the valve stem 2's strength is insufficient due to the lightweight design, thus further ensuring its reliability during operation.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-reliability, lightweight fuel injector valve assembly, characterized in that, The valve assembly (1) consists of a valve stem (2) and a valve seat (3). The valve stem (2) has a support plate (5) and a transition connecting plate (6) inside. The support plate (5) has a weight reduction groove (7) through it. The valve seat (3) has a balance groove (4) inside it.

2. The high-reliability lightweight injector valve assembly according to claim 1, characterized in that, One end of the valve stem (2) is inserted into the interior of the valve seat (3), and the end of the valve stem (2) located inside the valve seat (3) moves within the valve seat (3).

3. The high-reliability lightweight injector valve assembly according to claim 1, characterized in that, There are several balance grooves (4), and the several balance grooves (4) are equidistantly distributed on the same vertical plane inside the valve seat (3). The balance grooves (4) are concentrated at the position where the valve stem (2) contacts the inner wall of the valve seat (3) the most during the movement of the valve.

4. The high-reliability lightweight injector valve assembly according to claim 1, characterized in that, The valve stem (2) is hollow inside, and there are several transition connecting plates (6), which are linearly and equidistantly distributed inside the valve stem (2).

5. A high-reliability, lightweight injector valve assembly according to claim 1, characterized in that, There are several weight-reducing grooves (7), and the several weight-reducing grooves (7) are arranged in a honeycomb pattern on the surface of the support plate (5).

6. A high-reliability, lightweight injector valve assembly according to claim 1, characterized in that, The transition connecting plate (6) is X-shaped and is located at the diameter change position of the valve stem (2).

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