Fuel injector performance detection clamp

Abstract

The utility model relates to a fuel injector performance detection clamp which is used for a fuel injector, the fuel injector comprises a rod body and a fuel inlet pipe joint arranged on the side face of the rod body, and a first included angle is formed between the fuel inlet pipe joint and the axis of the rod body. The performance detection clamp comprises a support, the front end of the support is provided with an inclined plate, a second included angle is formed between the inclined plate and the horizontal plane, and the first included angle is equal to the second included angle; wherein the rod body is vertically clamped with the inclined plate, and the lower surface of the pedestal abuts against the upper surface of the inclined plate, so that the oil inlet pipe joint is vertically connected with an external nozzle, the positioning requirement during performance detection of the oil injector is met, the oil injector is convenient to take and place, and the performance detection efficiency of the oil injector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injectors, in particular to a fuel injector performance detection fixture. Background Art

[0002] When testing the performance of an injector, the nozzle must be connected to the fuel inlet connector on the side of the injector. A fuel injector performance test fixture typically consists of a bracket with a horizontal plate mounted on top, into which the injector is clipped. This type of fixture is only suitable for injectors where the fuel inlet connector is coaxial with the rod body and is not suitable for injectors where the fuel inlet connector and rod body are not coaxial.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content

[0004] In view of the shortcomings of the prior art, the embodiment of the present utility model discloses a fuel injector performance testing fixture suitable for fuel injectors whose fuel inlet pipe joint and rod body are not coaxial.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] An injector performance testing fixture is used for a fuel injector, wherein the injector includes a rod body and an oil inlet pipe joint arranged on the side of the rod body, a first angle is formed between the oil inlet pipe joint and the axis of the rod body, and the rod body includes a pedestal arranged on the outside of the rod body, and the outer diameter of the pedestal is larger than the rod body; the performance testing fixture includes: a bracket, a slanted plate is provided at the front end, a second angle is formed between the slanted plate and the horizontal plane, and the first angle and the second angle are equal; wherein the rod body is vertically clamped to the slanted plate, and the lower surface of the pedestal is against the upper surface of the slanted plate, so that the oil inlet pipe joint is vertically connected to the external nozzle.

[0007] A further technical solution is that the inclined plate includes a notch provided at the front end of the inclined plate; wherein the rod body is inserted into the notch, and the lower surface of the pedestal is against the upper surface of the inclined plate.

[0008] A further technical solution is that the bracket includes: a bottom plate; a vertical plate, which is vertically arranged on the rear side of the upper end of the bottom plate; and an inclined plate, which is vertically arranged on the upper end of the front side of the vertical plate.

[0009] A further technical solution is that the performance testing fixture includes: a stop block, which is arranged parallel to the surface of the inclined plate and has a side surface in contact with the side surface of the base.

[0010] A further technical solution is that the stop block is square and is screwed to the inclined plate.

[0011] A further technical solution is that the bottom plate includes: a waist-shaped hole that passes through the bottom plate.

[0012] A further technical solution is that the bottom plate, vertical plate and inclined plate are integrally formed.

[0013] A further technical solution is that the notch includes a square groove opened on the outer side of the inclined plate and a semicircular groove opened on the inner side of the square groove.

[0014] The beneficial effects of the embodiments of the present utility model are as follows:

[0015] (1) The present invention provides a fuel injector performance testing fixture for use with a fuel injector. The fuel injector includes a rod body and an oil inlet pipe joint disposed on the side of the rod body, with a first angle formed between the oil inlet pipe joint and the axis of the rod body. The performance testing fixture includes a bracket, a slanted plate disposed at the front end of the bracket, and a second angle formed between the slanted plate and a horizontal plane, the first angle and the second angle being equal. The rod body is vertically engaged with a notch at the front end of the slanted plate, with the lower surface of the base abutting against the upper surface of the slanted plate, so that the oil inlet pipe joint is vertically connected to an external nozzle. This meets the positioning requirements for fuel injector performance testing, facilitates the removal and placement of the fuel injector, and improves the efficiency of fuel injector performance testing.

[0016] (2) Furthermore, the stop block is arranged parallel to the surface of the inclined plate, and its side surface contacts the side surface of the base, thereby limiting the rotation of the injector and improving the stability and accuracy of the injector performance test.

[0017] (3) Furthermore, the bottom plate includes a waist-shaped hole, which is opened through the bottom plate to facilitate adjustment of the position between the performance testing fixture and the external workbench to ensure that the nozzle and the oil inlet pipe joint are coaxial. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an axonometric drawing of the injector performance testing fixture of the present invention from the first perspective.

[0019] Figure 2 This is a front view structural diagram of the fuel injector performance testing fixture of the present utility model.

[0020] Figure 3 This is an axonometric view of the bracket in the injector performance testing fixture of the present utility model.

[0021] Figure 4 This is an axonometric drawing of the injector performance testing fixture of the present invention from a second perspective.

[0022] In the picture:

[0023] 1. Injector; 11. Rod body; 12. Base; 13. Oil inlet pipe joint; 2. Bracket; 21. Base plate; 211. Waist-shaped hole; 22. Vertical plate; 23. Inclined plate; 24. Notch; 241. Square groove; 242. Semicircular groove; 25. Stop block. DETAILED DESCRIPTION

[0024] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the device proposed in the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0026] Example:

[0027] This embodiment discloses a fuel injector performance testing fixture.

[0028] like Figure 1 and Figure 2 As shown, the performance testing fixture is used for a fuel injector 1. The fuel injector 1 includes a rod 11 and an oil inlet pipe joint 13 disposed on the side of the rod 11. The oil inlet pipe joint 13 forms a first angle α with the axis of the rod 11. The rod 11 includes a base 12, which is disposed outside the rod 11 and has an outer diameter larger than the rod 11. Specifically, the base 12 is circumscribed in a rhombus shape with chamfered edges, which serves to secure the rod 11 of the fuel injector 1.

[0029] like Figure 1 and Figure 2 As shown, the performance testing fixture includes a bracket 2, with an inclined plate 23 provided at the front end of the bracket 2. The inclined plate 23 forms a second angle β with the horizontal plane, and the first angle α and the second angle β are equal. Exemplarily, the bracket 2 includes a base plate 21, a vertical plate 22, and an inclined plate 23. The base plate 21 is placed horizontally, the vertical plate 22 is vertically arranged at the rear side of the upper end of the base plate 21, and the inclined plate 23 is vertically arranged at the upper end of the front side of the vertical plate 22. The base plate 21, the vertical plate 22, and the inclined plate 23 are integrally formed.

[0030] The rod body 11 is vertically clamped to the inclined plate 23 so that the oil inlet pipe joint 13 is vertically connected to the external nozzle. The inclined plate 23 includes a notch 24, and the notch 24 is opened at the front end of the inclined plate 23. The rod body 11 is clamped into the notch 24, and the lower surface of the base 12 is against the upper surface of the inclined plate 23. There is a third angle γ between the axis of the oil inlet pipe joint 13 and the inclined plate 23. Because the rod body 11 is vertically clamped to the inclined plate 23, the first angle α and the third angle γ are complementary, so the second angle β is also complementary to the third angle γ, and the oil inlet pipe joint 13 is perpendicular to the horizontal plane. Figure 3 As shown, the notch 24 preferably includes a square groove 241 formed on the outside of the inclined plate 23 and a semicircular groove 242 formed on the inside of the square groove 241. The rod 11 is inserted into the semicircular groove 242 through the square groove 241, thereby increasing the contact area between the base 12 and the inclined plate 23, improving the stability of the injector 1, and allowing the injector 1 to extend into the bracket 2, saving space.

[0031] like Figure 1 、 Figure 2 and Figure 4 As shown, the performance test fixture further includes a stop block 25, which is arranged parallel to the surface of the inclined plate 23 and contacts the side surface of the base 12 to limit the rotation of the injector 1. For example, the stop block 25 is square and is screwed to the inclined plate 23.

[0032] like Figure 1 、 Figure 2 and Figure 3 As shown, further, the bottom plate 21 includes a waist-shaped hole 211, which is opened through the bottom plate 21 to facilitate adjustment of the position between the performance testing fixture and the external workbench to ensure that the nozzle and the oil inlet pipe joint 13 are coaxial.

[0033] In this embodiment, the second angle is formed between the swash plate 23 and the horizontal plane, and the first angle is formed between the fuel inlet pipe connector 13 and the axis of the rod body 11. The first angle and the second angle are equal. The rod body 11 vertically engages the notch 24 at the front end of the swash plate 23, and the lower surface of the base 12 abuts the upper surface of the swash plate 23, so that the fuel inlet pipe connector 13 is vertically connected to the external nozzle. This meets the positioning requirements for the performance testing of the injector 1, facilitates the removal and placement of the injector 1, and improves the efficiency of the performance testing of the injector 1.

[0034] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. The fuel injector performance testing fixture is characterized by: Used for a fuel injector (1), the fuel injector (1) comprising a rod body (11) and an oil inlet pipe joint (13) arranged on a side of the rod body (11), a first angle being formed between the oil inlet pipe joint (13) and the axis of the rod body (11), the rod body (11) comprising a pedestal (12) arranged on the outside of the rod body (11), the outer diameter of the pedestal (12) being larger than that of the rod body (11); The performance testing fixture comprises: The bracket (2) has an inclined plate (23) at its front end, wherein a second angle is formed between the inclined plate (23) and a horizontal plane, and the first angle and the second angle are equal; The rod body (11) is vertically clamped to the inclined plate (23), and the lower surface of the base (12) abuts against the upper surface of the inclined plate (23), so that the oil inlet pipe joint (13) is vertically connected to the external nozzle.

2. The fuel injector performance testing fixture according to claim 1, characterized in that: The inclined plate (23) comprises: a notch (24) formed at the front end of the inclined plate (23); Wherein, the rod body (11) is inserted into the notch (24).

3. The fuel injector performance testing fixture according to claim 2, characterized in that: The support (2) comprises: Bottom plate (21); A vertical plate (22) is vertically arranged on the rear side of the upper end of the bottom plate (21); The inclined plate (23) is vertically arranged on the upper end of the front side of the vertical plate (22).

4. The fuel injector performance testing fixture according to claim 3, characterized in that: The performance testing fixture comprises: The stop block (25) is arranged parallel to the surface of the inclined plate (23), and its side surface is in contact with the side surface of the pedestal (12).

5. The fuel injector performance testing fixture according to claim 4, characterized in that: The stop block (25) is square and is screw-connected to the inclined plate (23).

6. The fuel injector performance testing fixture according to claim 3, characterized in that: The bottom plate (21) comprises: A waist-shaped hole (211) is formed through the bottom plate (21).

7. The fuel injector performance testing fixture according to claim 3, characterized in that: The bottom plate (21), the vertical plate (22) and the inclined plate (23) are integrally formed.

8. The fuel injector performance testing fixture according to claim 2, characterized in that: The notch (24) comprises a square groove (241) opened on the outside of the inclined plate (23), and a semicircular groove (242) opened on the inside of the square groove (241).

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