Arrangement structure of engine integrated wiring harness

Abstract

The present invention discloses a layout structure of an engine integrated wiring harness, which relates to the field of engine assembly and solves the technical problem that the wiring harness layout on the current engine is messy and irregular. It includes a battery connection harness, a first bus harness and a transition harness; the battery terminal is connected to the starter B terminal through the battery connection harness, and the starter B terminal is respectively connected to the generator B+ terminal and the intake preheating relay; one end of the first bus harness is respectively connected to the generator D+ terminal and the air conditioning compressor connector, and the other end of the first bus harness is connected to a first plug connector; one end of the transition harness is connected to the port of the engine ECU, and the other end of the transition harness is connected to two second plug connectors. The present invention can optimize the layout and length of the wiring harness on the engine, thereby improving the appearance of the engine and reducing the safety hazards of the wiring harness layout.

Description

Technical Field

[0001] The present invention relates to engine assembly, and more particularly to a layout structure of an engine integrated wiring harness. Background Art

[0002] When the electronically controlled engine is installed on the vehicle, many wiring harness sockets on the engine need to be connected to the wiring harness on the vehicle. The existing connectors for connecting the engine to the vehicle end are arranged at different positions of the engine, such as Figure 1 As shown, the starter B terminal 1 is connected to the vehicle battery; the engine ECU 2 is connected to the corresponding connector of the vehicle wiring harness ( Figure 1 The engine ECU2 in the system has 4 connectors); the air conditioning compressor connector 3 is connected to the vehicle wiring harness; the generator B+ terminal 4 is connected to the vehicle battery; the generator D+ terminal 5 is connected to the corresponding connector of the vehicle wiring harness; the intake air preheating relay 6 is connected to the vehicle battery. Since there are many interfaces on the engine, when wiring the vehicle, many wiring harness branches need to be made at the vehicle wiring harness end to connect with each wiring harness interface on the engine. For example, the starter B terminal 1, the generator B+ terminal 4, and the intake air preheating relay 6 are all connected to the battery wiring terminal through separate wiring harnesses; the 4 plug interfaces of the engine ECU2 lead out at least 4 groups of wiring harnesses, and then are connected to the corresponding plug terminals on the vehicle. Such a layout will lead to problems such as too many wiring harnesses, messy wiring harness layout, and irregular wiring harness layout, which is prone to safety hazards. In addition, the positions of various electrical connectors on different engines will also be different, resulting in a wide variety of vehicle wiring harness states in the vehicle manufacturer, exacerbating the problems in the wiring harness layout. Summary of the invention

[0003] The technical problem to be solved by the present invention is to address the deficiencies of the prior art and to provide a layout structure for an engine integrated wiring harness, thereby solving the problem of the current disorderly and irregular layout of the wiring harness on the engine.

[0004] To achieve the above-mentioned purpose, the present invention provides an arrangement structure of an engine integrated wiring harness, including a battery connection harness, a first bus harness and a transition harness; one end of the battery connection harness is connected to the battery terminal, the other end of the battery connection harness is connected to the starter B terminal, and the starter B terminal is respectively connected to the generator B+ terminal and the intake preheating relay through the second bus harness; one end of the first bus harness is respectively connected to the generator D+ terminal and the air-conditioning compressor connector, and the other end of the first bus harness is connected to a first plug connector; one end of the transition harness is connected to the port of the engine ECU, and the other end of the transition harness is connected to at least two second plug connectors.

[0005] As a further improvement, it also includes a fuse box; the fuse box is fixedly mounted on the engine body through a first mounting base, the generator B+ terminal is connected to an input terminal of the fuse box through a first branch wiring harness, the intake preheating relay is connected to another input terminal of the fuse box through a second branch wiring harness, and the output terminal of the fuse box is connected to one end of the second bus harness.

[0006] Furthermore, the first plug connector is a 4-pin square plug connector.

[0007] Furthermore, two second plug connectors are connected to the end of the transition harness.

[0008] Furthermore, the second plug connector is a 48-pin circular plug connector.

[0009] Furthermore, it also includes a second mounting seat; the second mounting seat is installed on the engine flywheel housing, and the first plug connector and the second plug connector are both installed on the second mounting seat.

[0010] Beneficial Effects

[0011] The advantages of the present invention are: through the battery connection harness, two bus harnesses and transition harnesses, the six positions on the engine connected to the whole vehicle are integrated into two positions and four connection ends, which facilitates the wiring of the whole vehicle and the production of the whole vehicle harness. In addition, since the position of the engine connecting to the whole vehicle is fixed, the layout and length of the harness on the engine can be optimized, thereby improving the appearance of the engine and reducing the safety hazards of the harness layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the distribution of the wiring terminals of the engine in the prior art;

[0013] Figure 2 It is a structural schematic diagram of the present invention.

[0014] Among them: 1-starter B terminal, 2-engine ECU, 3-air conditioning compressor connector, 4-generator B+ terminal, 5-generator D+ terminal, 6-intake preheating relay, 7-fuse box, 8-second branch wiring harness, 9-first branch wiring harness, 10-second bus harness, 11-transition wiring harness, 12-first bus harness, 13-second plug connector, 14-first plug connector, 15-second mounting seat. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the embodiments, but it does not constitute any limitation to the present invention. Any limited number of modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0016] See also Figure 1-Figure 2The layout structure of an engine integrated wiring harness of the present invention includes a battery connection wiring harness, a first bus harness 12 and a transition harness 11. The existing engine electrical part is generally divided into a strong current part and a weak current part. The strong current part mainly includes components such as a generator, a starter and an intake preheating relay 6, which are characterized by large working current and high rated power. The weak current part mainly includes components such as an engine ECU2 and an air conditioning compressor, which have low working current and rated power.

[0017] Regarding the wiring of the strong current part. One end of the battery connection harness is connected to the battery terminal, and the other end of the battery connection harness is connected to the starter B terminal 1. The starter B terminal 1 is respectively connected to the generator B+ terminal 4 and the intake preheating relay 6 through the second bus harness 10. After the generator B+ terminal 4 and the intake preheating relay 6 are connected to the starter B terminal 1, the starter B terminal 1 is connected to the battery through a bus harness, thereby integrating the harness connected to the battery, optimizing the layout of the harness, and avoiding the problem of each terminal in the prior art being connected to the battery through an independent harness, resulting in messy and irregular wiring.

[0018] Preferably, the arrangement structure also includes a fuse box 7. The fuse box 7 is fixedly mounted on the engine body through a first mounting seat. The generator B+ terminal 4 is connected to an input terminal of the fuse box 7 through a first branch wiring harness 9, the intake preheating relay 6 is connected to another input terminal of the fuse box 7 through a second branch wiring harness 8, and the output terminal of the fuse box 7 is connected to one end of a second bus harness 10. The fuse box 7 is connected between the generator B+ terminal 4, the intake preheating relay 6 and the starter B terminal 1. The fuse box 7 protects the generator, the intake preheating relay 6, the starter and the battery, thereby preventing the generator or the starter from having excessive instantaneous current and damaging the battery or the intake preheating relay 6.

[0019] Regarding the wiring of the weak current part. One end of the first bus bundle 12 is connected to the generator D+ terminal 5 and the air-conditioning compressor connector 3 respectively, and the other end of the first bus bundle 12 is connected to the first plug connector 14. That is, the generator D+ terminal 5 and the air-conditioning compressor connector 3 are led out through the first bus bundle 12 equipped with the first plug connector 14. When the generator D+ terminal 5 and the air-conditioning compressor connector 3 are connected to the vehicle line, it is only necessary to connect the corresponding line in the vehicle to the first plug connector 14, which is simple and convenient.

[0020] One end of the transition harness 11 is connected to the port of the engine ECU2, and the other end of the transition harness 11 is connected to at least two second plug connectors 13. Specifically, two second plug connectors 13 are connected to the end of the transition harness 11. One end of the transition harness 11 connected to the engine ECU2 is provided with four branch harnesses, and the ends of the four branch harnesses are all equipped with plug connectors matching the plug interface of the engine ECU2. The four plug interfaces of the engine ECU2 are led out through the transition harness 11. When the engine ECU2 is connected to the corresponding lines of the whole vehicle, it is only necessary to connect the corresponding lines in the whole vehicle to the second plug connectors 13.

[0021] The arrangement structure of this embodiment also includes a second mounting seat 15. The second mounting seat 15 is mounted on the rear suspension bracket on the engine flywheel housing, and the first plug connector 14 and the second plug connector 13 are both mounted on the second mounting seat 15. That is, the position on the engine that is docked with the whole vehicle is fixed, which can facilitate the arrangement of the wiring harness on the engine and the whole vehicle, and also facilitate the connection of the wiring harness on the engine with the wiring harness on the whole vehicle. Specifically, the second mounting seat 15 is a bending part, and a first bending plate connected to the rear suspension bracket on the engine flywheel housing is bent at the bottom, and a second bending plate is bent at the top, and a preset mounting hole is provided on the second bending plate. A plurality of mounting holes that are compatible with the first plug connector 14 and the second plug connector 13 are provided on the main board between the two bending plates, and the plurality of mounting holes are arranged in a horizontal arrangement. Such a structure not only improves the operability of wiring, but also reduces the risk of wiring errors, and is practical and convenient.

[0022] Preferably, the first plug connector 14 is a 4-pin square plug connector, and the second plug connector 13 is a 48-pin round plug connector. The two plug connectors are arranged in different shapes for easy distinction, which can further avoid the risk of wiring errors.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. An arrangement structure of an engine integrated wiring harness, characterized in that: The invention comprises a battery connection harness, a first bus harness (12) and a transition harness (11); one end of the battery connection harness is connected to the battery terminal, the other end of the battery connection harness is connected to the starter B terminal (1), and the starter B terminal (1) is respectively connected to the generator B+ terminal (4) and the intake air preheating relay (6) through the second bus harness (10); one end of the first bus harness (12) is respectively connected to the generator D+ terminal (5) and the air conditioning compressor connector (3), and the other end of the first bus harness (12) is connected to a first plug connector (14); one end of the transition harness (11) is connected to a port of an engine ECU (2), and the other end of the transition harness (11) is connected to at least two second plug connectors (13); It also includes a fuse box (7); the fuse box (7) is fixedly mounted on the engine body via a first mounting seat, the generator B+ terminal (4) is connected to an input terminal of the fuse box (7) via a first branch wiring harness (9), the intake air preheating relay (6) is connected to another input terminal of the fuse box (7) via a second branch wiring harness (8), and the output terminal of the fuse box (7) is connected to one end of a second bus harness (10); Two second plug connectors (13) are connected to the end of the transition harness (11); It also includes a second mounting seat (15); the second mounting seat (15) is mounted on the engine flywheel housing, and the first plug connector (14) and the second plug connector (13) are both mounted on the second mounting seat (15); The second mounting seat (15) is a bent part, with a first bent plate bent below and connected to the rear suspension bracket on the engine flywheel housing, and a second bent plate bent above, and the second bent plate is provided with a pre-set mounting hole; a plurality of mounting holes compatible with the first plug connector (14) and the second plug connector (13) are provided on the main board between the two bent plates, and the plurality of mounting holes are arranged in a transverse arrangement.

2. The layout structure of an engine integrated wiring harness according to claim 1, characterized in that: The first plug connector (14) is a 4-pin square plug connector.

3. The layout structure of an engine integrated wiring harness according to claim 1, characterized in that: The second plug connector (13) is a 48-pin circular plug connector.

Images