Tool for removing fuel injectors

Abstract

Tool for removing injectors, which is designed to secure the injector (1) for carrying out a disassembly operation, wherein the tool (10) has a base body (10) with a first claw (11), a second claw (12) and a support section (13), wherein the first claw (11) and the second claw (12) are arranged at opposite ends of the support section (13) along a Z-axis and extend in an X-axis, such that the first claw (11), the second claw (12) and the support section (13) together form a receiving space (14) in which the injection nozzle (1) can be fixed, the X-axis being perpendicular to the Z-axis; and - wherein the end face of the first claw (11) has a first groove (111) and the end face of the second claw (12) has a second groove (121), and wherein the first groove (111) and the second groove (121) are designed to engage the injector nozzle (1) at different positions.

Description

[0001] The present invention relates to a dismantling tool and in particular to a tool for removing fuel injectors.

[0002] In current technology, fuel injectors are primarily removed using impact techniques. A special puller is employed, which gradually extracts the injector from its installation position through repeated hammering. However, since fuel injectors are typically embedded approximately 20 cm deep into the engine block, carbon deposits, resin buildup, and moisture exposure create a tight bond between the injector and the engine after prolonged operation, significantly hindering simple removal.

[0003] The known methods therefore require a considerable amount of time. Often, several hours of hammering are necessary to gradually loosen the injector and separate it from the engine structure, which significantly delays the repair process. Attempting to forcibly remove the injector with increased mechanical force carries the risk of damaging or even breaking the injector, leaving part of it inside the engine.

[0004] Furthermore, improper handling when using the known methods can also lead to damage to the engine itself.

[0005] The invention is based on the objective of creating a tool for removing fuel injectors that overcomes the low efficiency of conventional removal methods and simultaneously reduces the risk of damage to the fuel injector.

[0006] This problem is solved according to the invention by a tool for removing fuel injectors, which has the features specified in claim 1. Further advantageous embodiments of the invention will become apparent from the features of the dependent claims.

[0007] According to the invention, a tool for removing fuel injectors is provided, which serves to secure a fuel injector for a disassembly operation. The tool has a base body comprising a first claw, a second claw, and a support section. The first claw and the second claw are arranged at opposite ends of the support section along a Z-axis and extend along an X-axis, such that the first claw, the second claw, and the support section together form a receiving space for fixing the fuel injector, with the X-axis being perpendicular to the Z-axis.

[0008] The advantage gained from this lies in providing a stable and effective tool for removing fuel injectors. The injector is reliably gripped by the receiving area formed by the first claw, the second claw, and the support section. When removing the injector from the engine, the risk of damage to the injector or the engine is reduced, removal efficiency is increased, and the time required for maintenance work is shortened.

[0009] The invention and its embodiments are explained in more detail below with reference to the drawing. The drawing shows: Fig. 1 A perspective view of the tool according to the invention for removing injection nozzles.; Fig. 2 a front view according to Fig. 1; Fig. 3 a side view according to Fig. 1; Fig. 4 a sectional view showing the tool for removing injectors when fixing an injector; and Fig. 5 a front view showing the second claw gripping the injector nozzle.

[0010] With reference to the Fig. 1 to Fig. Reference 5 discloses a tool for removing fuel injectors, which serves to secure a fuel injector 1 for a disassembly operation. This tool 10 for removing fuel injectors comprises a first claw 11, a second claw 12, and a support section 13. The first claw 11 and the second claw 12 are arranged either perpendicularly or at an angle at the two ends of the support section 13 along a Z-axis. Furthermore, the first claw 11 and the second claw 12 extend along an X-axis, such that the first claw 11, the second claw 12, and the support section 13 together form a receiving space 14 in which the fuel injector 1 can be fixed. The X-axis is perpendicular to the Z-axis.

[0011] With further reference to Fig. 1 has a free end F of the first claw 11 or the second claw 12, each with an arc-shaped surface. The arc-shaped surface prevents the user from injuring themselves on sharp edges when handling the base body 10, and also reduces the risk of scratching or abrasion damage to the surface of the injection nozzle 1 during assembly and disassembly.

[0012] With reference to the Fig. 1 to Fig. 3 The support section 13 has a one-piece design and forms an upper first support section 131 and a second support section 132 arranged below it. In one embodiment, the width of the first support section 131 in the Y direction is greater than the width of the second support section 132. The wider first support section 131 increases the structural strength of the support section 13, while the narrower second support section 132 facilitates the attachment of the support section 13 to a motor [not shown].

[0013] With reference to the Fig. 1 to Fig. In one embodiment, figure 3 provides that a first rounded edge 151 is formed on both sides of the transition areas between the first support section 131 and the second support section 132. The formation of the first rounded edge 151 reduces stress concentration in the support section 13 in this area, thereby reducing the risk of cracking or deformation of the support section 13 during prolonged use or under load. This improves the durability of the base body 10.

[0014] With reference to the Fig. 1 to Fig. In section 3, the first support section 131 is connected to the first claw 11, while the second support section 132 is connected to the second claw 12. A second rounding 152 is provided at the transition area between the first claw 11 and the support section 13, and a third rounding 153 is formed at the transition area between the second claw 12 and the support section 13. The second rounding 152 and the third rounding 153 reduce stress peaks and thereby reduce the risk of fractures or damage in the area of ​​the connection points between the first claw 11 or the second claw 12 and the support section 13.

[0015] With reference to the Fig. 1 to Fig. Figure 3 shows that the end face of the first claw 11 has a first groove 111 and the end face of the second claw 12 has a second groove 121. In one embodiment, an imaginary connecting line between the first groove 111 and the second groove 121 can be defined as a virtual axis L. The virtual axis L is at a distance H from the adjacent wall surface of the support section 13. In other words, the first groove 111 and the second groove 121 are each arranged at a distance H from the adjacent wall surface of the support section 13 and engage the injector nozzle 1 at different positions. The provided distance H makes it easier for the user, when pulling out the injector nozzle 1 after it has been connected to the base body 10, to insert their hand into the receiving space 14, to securely grip the support section 13, and to exert a pulling force on the base body 10.

[0016] With reference to Fig. In one embodiment, the side wall length gradually increases along the X-axis from the first support section 131 to the second support section 132. In other words, the side wall continuously widens from the first support section 131 towards the second support section 132, so that the second support section 132 has a greater length in the X-direction than the first support section 131. This widening side wall structure of the support section 13 provides additional mechanical stability when the injection nozzle 1 is withdrawn, thus distributing the applied withdrawal force more effectively.In this way, despite the fact that the width in the Y direction of the second support section 132 is smaller than the width of the first support section 131, the structural strength of the second support section 132 can be effectively increased by the extended side wall, which in turn reduces the risk of damage to the injector nozzle 1 or to the engine.

[0017] With reference to the Fig. 4 and Fig.In one embodiment, the first claw 11 and the second claw 12 can be aligned with the side wall of the injector nozzle 1 and clamped in place, so that the base body 10 is firmly connected to the injector nozzle 1. It should also be noted that in certain embodiments, the injector nozzle 1 can additionally be provided with a screw-locking structure 20 at its upper end, which facilitates the attachment and fixing of the tool according to the invention. In the initial phase of the disassembly process, the operator should apply a slight pulling force to the upper end of the injector nozzle 1 to initiate the removal process. The design of the first claw 11 and the second claw 12 not only ensures reliable clamping of the injector nozzle 1, but also ensures that the initial force applied at their upper end is distributed evenly across the side wall of the injector nozzle 1.This avoids excessive force concentration at a single point and effectively reduces the risk of the injector nozzle 1 breaking during the removal process. Thus, the tool according to the invention helps to protect both the injector nozzle 1 and the engine from damage during removal from the engine, increases disassembly efficiency, shortens repair time, and simultaneously protects the injector nozzle 1 and the associated components.

[0018] In summary, the following advantages, for example, can be achieved with the tool according to the invention: 1. Stable clamping and increased disassembly efficiency: The receiving space 14 formed by the first claw 11, the second claw 12, and the support section 13 allows the injector nozzle 1 to be reliably secured. This ensures that the tensile force acting on the injector nozzle 1 during removal is evenly distributed, effectively reducing the risk of damage to the injector nozzle 1 or the engine during the disassembly process. At the same time, this increases the efficiency of removing the injector nozzle 1. 2. Support section with high strength and weight-optimized design: The support section 13 has a first support section 131 and a second support section 132 arranged one above the other. The wider first support section 131 increases structural strength, while the narrower second support section 132 facilitates attachment to the engine. This improves stability during disassembly and simplifies handling. 3. Rounding off to reduce stress concentrations: The formation of the first rounded section 151 reduces stress concentrations in the support section 13, thereby decreasing the risk of cracking or deformation during prolonged use or under load. Furthermore, the second rounded section 152 and the third rounded section 153 contribute significantly to reducing stress concentrations at the connection points between the first claw 11 and the second claw 12, respectively, and the support section 13. This minimizes the risk of fractures or damage and increases the overall service life of the tool used for removing injection nozzles.

Claims

[1] Tool for removing injectors, which is designed to hold the injector (1) in place for carrying out a disassembly operation, wherein the tool (10) has a base body (10) with a first claw (11), a second claw (12) and a support section (13), wherein the first claw (11) and the second claw (12) are arranged at opposite ends of the support section (13) along a Z-axis and extend in an X-axis, such that the first claw (11), the second claw (12) and the support section (13) together form a receiving space (14) in which the injection nozzle (1) can be fixed, the X-axis being perpendicular to the Z-axis; and - wherein the end face of the first claw (11) has a first groove (111) and the end face of the second claw (12) has a second groove (121), and wherein the first groove (111) and the second groove (121) are designed to engage the injector nozzle (1) at different positions. [2] Tool for removing injectors according to claim 1, characterized by , that the support section (13) is formed in one piece and has an upper first support section (131) and a second support section (132) arranged below it, wherein the first support section (131) is connected to the first claw (11) and the second support section (132) is connected to the second claw (12), and wherein the width of the first support section (131) in the Y direction is greater than the width of the second support section (132). [3] Tool for removing injectors according to claim 2, characterized by, that a first rounding (151) is provided on both sides at the transition areas between the first support section (131) and the second support section (132). [4] Tool for removing injectors according to claim 3, characterized by , that a second rounding (152) is formed at the transition area between the first claw (11) and the support section (13) and a third rounding (153) is formed at the transition area between the second claw (12) and the support section (13). [5] Tool for removing injectors according to claim 4, characterized by , that a free end (F) of the first claw (11) or of the second claw (12) is each curved. [6] Tool for removing injectors according to claim 1, characterized by , that the first groove (111) and the second groove (121) are each arranged at a distance (H) from an adjacent wall surface of the support section (13). [7] Tool for removing injectors according to claim 2, characterized by , that the side wall length gradually increases from the first support section (131) to the second support section (132) along the X-axis.

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