Engine controller external connector fault diagnosis tool

Abstract

The utility model discloses an engine controller external connector fault diagnosis frock relates to engine test field, and the existing engine signal detection technical means destroys the technical problem of harness integrity, test cost and technical threshold are high, adapter plate volume is bulky and difficult to satisfy the technical problem of standardization test requirement. It includes the casing, is set up with the connecting groove that engine harness connector connects on the casing, the bottom of casing is equipped with the controller connecting portion that is connected with engine controller, one side of casing is equipped with the extension portion that is electrically connected with external test circuit, engine harness connector is electrically connected with controller connecting portion and extension portion respectively through the connecting module. The utility model keeps the original vehicle electrical system integrity, and can realize the purpose of quick switching of multiple fault modes, is convenient for customer to use, and the use difficulty is low.

Description

Technical Field

[0001] This utility model relates to the field of engine testing, and more specifically, it relates to a fault diagnosis tooling for the external connector of an engine controller. Background Technology

[0002] In the research and development, verification, ship inspection testing, and maintenance diagnosis of traditional diesel engines, frequent simulations of sensor signal anomalies are required to verify the fault response capabilities of the control system. During engine development verification, ship inspection testing, and maintenance operations, it is often necessary to simulate sensor short circuits, open circuits, and other fault states to verify the fault response mechanism of the control system. Currently, the mainstream technical methods can be divided into four categories:

[0003] (1) Harness destruction method: The engine wiring harness is physically destroyed directly, and the fault is simulated by cutting or shorting the sensor transmission line. However, this method is irreversible and destroys the integrity of the wiring harness. Especially in ship inspection scenarios, ship owners usually prohibit destructive operations on ship engine wiring harnesses, which limits the applicability of this method.

[0004] (2) Signal injection method: A multi-functional signal amplifier is used to inject a simulated voltage / current signal from the sensor connector pin. Although it can achieve accurate signal simulation, it requires professional electronic equipment and is complicated to operate, which significantly increases the testing cost and technical threshold.

[0005] (3) Adapter board method: An adapter module is installed between the engine controller and the engine wiring harness, which is indirectly connected to the wiring harness pins through a copper pillar array. Fault simulation is achieved by switching the copper pillars on and off. Although this solution avoids damage to the wiring harness, the adapter board has a complex structure and is bulky. In addition, the copper pillar connection is prone to contact resistance interference, which affects the accuracy of the test. It is difficult to implement in space-constrained scenarios such as ship engine rooms.

[0006] (4) Environmental triggering method: The sensor is placed in a harsh environment to induce a real fault. This method requires the construction of a special test environment and the fault mode is uncontrollable, making it difficult to meet standardized test requirements and has low feasibility under shipboard conditions. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a fault diagnosis tooling for the external connector of the engine controller, which addresses the shortcomings of existing technologies and solves the technical problems of existing engine signal detection techniques, such as damage to the integrity of the wiring harness, high testing costs and technical barriers, bulky adapter boards, and difficulty in meeting standardized testing requirements.

[0008] The engine controller external connector fault diagnosis tooling of this utility model includes a housing, on which a connection groove is provided for connecting to an engine wiring harness connector, the engine wiring harness connector being inserted into the connection groove, a controller connection part for connecting to the engine controller being provided at the bottom of the housing, and an extension part for electrically connecting to an external test circuit being provided on one side of the housing, the engine wiring harness connector being electrically connected to the controller connection part and the extension part respectively through a connection module.

[0009] As a further improvement, the connection module includes a plurality of first connection conductors and a plurality of second connection conductors;

[0010] The connecting groove is provided with multiple conductive cylinders that match the pins of the engine wiring harness connector, and the pins of the engine wiring harness connector are inserted into the conductive cylinders.

[0011] Each of the conductive cylinders is connected to a first connecting conductor at its bottom. One end of the first connecting conductor extends into the controller connection part and is electrically connected to the engine controller through a connecting wire harness.

[0012] A second connecting conductor is fixedly connected to one side of the conductive cylinder. The second connecting conductor extends into the extension and serves as the test end of the extension.

[0013] Furthermore, a first fixing block is fixedly installed on one side of the connecting groove on the upper part of the housing, and the first fixing block is provided with a first anti-loosening structure on the side facing the connecting groove.

[0014] A second fixing block is fixedly installed on the upper part of the housing on the other side of the connecting groove, and the second fixing block has a second anti-loosening structure on the side facing the connecting groove.

[0015] Furthermore, the first anti-loosening structure is a first arc-shaped spring piece, the bottom of which is fixedly mounted on a first fixing block, and a first limiting part is provided between the first arc-shaped spring piece and the engine wiring harness connector.

[0016] Furthermore, the second anti-loosening structure is a second arc-shaped spring piece, the bottom of which is fixedly mounted on the second fixing block, and a second limiting part is provided between the second arc-shaped spring piece and the engine wiring harness connector.

[0017] Furthermore, both the arc-shaped portion of the first arc-shaped spring and the arc-shaped portion of the second arc-shaped spring are provided with a mesh pattern.

[0018] Furthermore, multiple heat sinks are provided on both sides of the housing.

[0019] Beneficial effects

[0020] The advantages of this utility model are:

[0021] This utility model includes a housing with a connection groove for connecting to an engine wiring harness connector. The engine wiring harness connector is inserted into the connection groove. A controller connection part for connecting to an engine controller is provided at the bottom of the housing. An extension part for electrical connection to an external test circuit is provided on one side of the housing. The engine wiring harness connector is electrically connected to the controller connection part through a first connecting conductor, and the engine wiring harness connector is electrically connected to the extension part through a second connecting conductor. This design maintains the integrity of the original vehicle electrical system and enables rapid switching between multiple fault modes, making it convenient for customers to use and easy to operate. Attached Figure Description

[0022] Figure 1 This is a front structural diagram of the connection between the engine wiring harness connector and the fault diagnosis tooling of this utility model.

[0023] Figure 2 This is a top view of the fault diagnosis tooling of this utility model.

[0024] Wherein: 1-Engine wiring harness connector, 2-Housing, 3-Connecting groove, 4-Extension part, 5-Controller connection part, 6-First fixing block, 7-Second fixing block, 8-First arc-shaped spring, 9-First limiting part, 10-Second arc-shaped spring, 11-Second limiting part, 12-Heat sink, 13-Conductive cylinder, 14-First connecting conductor, 15-Second connecting conductor. Detailed Implementation

[0025] The present invention will be further described below with reference to embodiments, but this does not constitute any limitation on the present invention. Any limited modifications made by any person within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0026] See Figures 1-2 The present invention relates to a fault diagnosis tooling for an external connector of an engine controller. It includes a housing 2, on which a connecting groove 3 is provided for connecting to an engine wiring harness connector 1. The engine wiring harness connector 1 is inserted into the connecting groove 3. The bottom of the housing 2 is provided with a controller connection part 5 for connecting to the engine controller. An extension part 4 for electrically connecting to an external test circuit is provided on one side of the housing 2. The engine wiring harness connector 1 is electrically connected to the controller connection part 5 through multiple first connecting conductors 15. The engine wiring harness connector 1 is electrically connected to the controller connection part 5 and the extension part 4 respectively through a connecting module.

[0027] like Figure 2As shown, the connection module includes multiple first connecting conductors 14 and multiple second connecting conductors 15. Multiple conductive cylinders 13, matching the pins of the engine wiring harness connector 1, are provided in the connection slot 3. The pins of the engine wiring harness connector 1 are inserted into the conductive cylinders 13. Each conductive cylinder 13 has a first connecting conductor 14 connected to its lower end. One end of the first connecting conductor 14 extends into the controller connection part 5 and is electrically connected to the engine controller via the connecting harness. A second connecting conductor 15 is fixedly connected to one side of the conductive cylinder 13, extending into the extension part 4 and serving as the test end of the extension part 4. This connection module ensures that the signals output to the controller connection part 5 and the extension part 4 are consistent.

[0028] A first fixing block 6 is fixedly installed on one side of the connecting groove 3 above the housing 2. The first fixing block 6 is provided with a first anti-loosening structure on the side facing the connecting groove 3.

[0029] A second fixing block 7 is fixedly installed on the upper part of the housing 2 on the other side of the connecting groove 3. The second fixing block 7 has a second anti-loosening structure on the side facing the connecting groove 3. The first anti-loosening structure and the second anti-loosening structure play a role in preventing the engine wiring harness connector 1 inserted into the connecting groove 3 from loosening.

[0030] The first anti-loosening structure is a first arc-shaped spring piece 8. The bottom of the first arc-shaped spring piece 8 is fixedly installed on the first fixing block 6. A first limiting part 9 is provided between the first arc-shaped spring piece 8 and the engine wiring harness connector 1.

[0031] The second anti-loosening structure is a second arc-shaped spring piece 10. The bottom of the second arc-shaped spring piece 10 is fixedly installed on the second fixing block 7. A second limiting part 11 is provided between the second arc-shaped spring piece 10 and the engine wiring harness connector 1.

[0032] After the pins of the engine wiring harness connector 1 are inserted into the corresponding first socket 13 and second socket 14, the first arc-shaped spring 8 and the second arc-shaped spring 10 press and limit the outer side of the engine wiring harness connector 1 to prevent the engine wiring harness connector 1 from loosening during operation.

[0033] Both the arc-shaped portion of the first arc-shaped spring 8 and the arc-shaped portion of the second arc-shaped spring 10 are provided with a mesh pattern. The mesh pattern is used to increase the friction between the first arc-shaped spring 8 and the engine wiring harness connector 1, and between the second arc-shaped spring 10 and the engine wiring harness connector 1, so as to further prevent the engine wiring harness connector 1 from loosening.

[0034] Multiple heat sinks 12 are provided on both sides of the housing 2. The heat sinks 12 are used to dissipate heat from the housing 2 during operation.

[0035] The external test circuit and engine controller in this invention are existing technologies, and this invention does not improve upon them.

[0036] The working principle of this utility model is as follows:

[0037] After the pins of the engine wiring harness connector 1 are inserted into the corresponding first socket 13 and second socket 14, the first arc-shaped spring 8 and the second arc-shaped spring 10 press and limit the outer side of the engine wiring harness connector 1 to prevent the engine wiring harness connector 1 from loosening during operation.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. An engine controller external connector fault diagnostic tool, characterized by, It includes a housing (2), on which a connection groove (3) is provided for connecting to an engine wiring harness connector (1), the engine wiring harness connector (1) is inserted into the connection groove (3), the bottom of the housing (2) is provided with a controller connection part (5) for connecting to an engine controller, and one side of the housing (2) is provided with an extension part (4) for electrically connecting to an external test circuit. The engine wiring harness connector (1) is electrically connected to the controller connection part (5) and the extension part (4) respectively through a connection module.

2. The fault diagnosis tooling for the external connector of the engine controller according to claim 1, characterized in that, The connection module includes a plurality of first connection conductors (14) and a plurality of second connection conductors (15); The connecting groove (3) is provided with a plurality of conductive cylinders (13) that match the pins of the engine wiring harness connector (1), and the pins of the engine wiring harness connector (1) are inserted into the conductive cylinders (13). Each of the conductive cylinders (13) is connected to a first connecting conductor (14) at its bottom. One end of the first connecting conductor (14) extends into the controller connection part (5) and is electrically connected to the engine controller through a connecting wire harness. A second connecting conductor (15) is fixedly connected to one side of the conductive cylinder (13). The second connecting conductor (15) extends into the extension (4) and serves as the test end of the extension (4).

3. The engine controller external connection fault diagnostic tool of claim 1, wherein, A first fixing block (6) is fixedly installed on the upper part of the housing (2) on one side of the connecting groove (3), and the first fixing block (6) is provided with a first anti-loosening structure on the side facing the connecting groove (3); A second fixing block (7) is fixedly installed on the upper part of the housing (2) on the other side of the connecting groove (3), and the second fixing block (7) is provided with a second anti-loosening structure on the side facing the connecting groove (3).

4. The engine controller external connection fault diagnostic tool of claim 3, wherein, The first anti-loosening structure is a first arc-shaped spring piece (8), the bottom of the first arc-shaped spring piece (8) is fixedly installed on the first fixing block (6), and a first limiting part (9) is provided between the first arc-shaped spring piece (8) and the engine wiring harness connector (1).

5. The engine controller external connector fault diagnostic tool of claim 4, wherein, The second anti-loosening structure is a second arc-shaped spring (10). The bottom of the second arc-shaped spring (10) is fixedly installed on the second fixing block (7). A second limiting part (11) is provided between the second arc-shaped spring (10) and the engine wiring harness connector (1).

6. The engine controller external connection fault diagnostic tool of claim 5, wherein, Both the arc-shaped portion of the first arc-shaped spring (8) and the arc-shaped portion of the second arc-shaped spring (10) are provided with a mesh pattern.

7. The engine controller off-header fault diagnostic tool of claim 1, wherein, Multiple heat sinks (12) are provided on both sides of the housing (2).

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