Heavy-duty car engine wire harness

Abstract

The utility model discloses a heavy-duty car engine wire harness, mainly relates to the technical field of car engine wire harnesses, and is used for solving the problems that the engine wire harness in the existing scheme does not comprise an integrated post-processing relay, and in addition, the post-processing wire harness relay branch wire harnesses are complicated, so that the cost is low. When the wiring harness is butted with an existing national V engine wiring harness, the manufacturing cost of the wiring harness is increased, and water enters a post-processing relay. The engine wire harness comprises a wire harness body installed on the periphery of an engine, and the wire harness body comprises a whole vehicle interface branch, an ECU branch, an oil sprayer interface branch and an SCR butt joint interface branch. Wherein the whole vehicle interface branch is connected with the transition line; the ECU branch is connected with an electric control unit mounted on an engine; the oil injector interface branch is connected with the oil injector; and the SCR docking port branch is connected with the post-processing wiring harness relay wiring harness.

Description

Technical Field

[0001] The present application relates to the technical field of automobile engines, and in particular to a wiring harness for a heavy-duty automobile engine. Background Art

[0002] After the existing models complete the powertrain assembly in the final assembly workshop, when the powertrain is assembled with the whole vehicle, the engine wiring harness needs to exchange information with the instrument wiring harness and the engine compartment wiring harness. Therefore, there are many places where the engine wiring harness needs to be plugged in with the wiring harness and sensors on the whole vehicle, which affects the assembly efficiency and is easy to be misinstalled. In addition, the front oxygen sensor, rear oxygen sensor, and engine ECU are all installed in the front panel bracket under the front wall, the lower section of the front pillar inner panel assembly and other parts of the whole vehicle instead of being arranged on the engine. The engine wiring harness must be extended to the relevant parts and plugged in with the corresponding parts. Due to the long distance, it is necessary to consider the proper fixation of each section of the wiring harness.

[0003] Existing public solutions for automobile engine wiring harnesses include: an engine wiring harness, the wiring harness connector is fixed on the engine or the frame, the engine wiring harness connector is provided with a plurality of wiring harness connection terminals, and the wiring harness connection terminals are respectively connected to the engine sensor, actuator, preheating circuit, air conditioning compressor circuit, instrument water temperature sensor, instrument oil pressure sensor, starter and generator control circuit through the connecting wiring harness.

[0004] However, the existing solution involves that the engine wiring harness does not include an integrated post-processing relay. In addition, the branch wiring harness of the post-processing wiring harness relay is complicated. When it is connected with the existing National V engine wiring harness, not only does it increase the wiring harness production cost, but there is also a risk of water entering the post-processing relay. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the present application provides a heavy-duty vehicle engine wiring harness, method and medium to solve the problem that the existing solution involves that the engine wiring harness does not include an integrated post-processing relay. In addition, the branch wiring harness of the post-processing wiring harness relay is complicated. When it is connected with the existing National Five engine wiring harness, not only the wiring harness production cost increases, but also there is a risk of water entering the post-processing relay.

[0006] In the first aspect, the present application provides a heavy-duty vehicle engine wiring harness, the engine wiring harness comprising: a wiring harness body installed on the periphery of the engine, and the wiring harness body comprises: a vehicle interface branch, an ECU branch, an injector interface branch and an SCR interface branch; wherein the vehicle interface branch is connected to the transition line; the ECU branch is connected to the electronic control unit installed on the engine; the injector interface branch is connected to the injector; and the SCR interface branch is connected to the post-processing wiring harness relay harness.

[0007] Furthermore, the post-processing wiring harness relay harness includes: a normal power input terminal, a main relay, a first heating resistor, a second heating resistor, a third heating resistor, a fourth heating resistor, a first relay, a second relay, a third relay, and a fourth relay; wherein, the normal power input terminal is connected to the main relay, the main relay output terminal outputs a 24V voltage, and the main relay output terminal is respectively connected to the first heating resistor, the second heating resistor, the third heating resistor, and the fourth heating resistor, and the first heating resistor, the second heating resistor, the third heating resistor, and the fourth heating resistor are respectively connected to the electronic control unit, and the first heating resistor is connected to the first relay, the second heating resistor is connected to the second relay, the third heating resistor is connected to the third relay, the fourth heating resistor is connected to the fourth relay, and the first relay, the second relay, the third relay, and the fourth relay are respectively output to the ground.

[0008] Furthermore, the normal power input terminal is connected to the SCR interface branch.

[0009] Furthermore, the normal power input terminal is a 24V normal power.

[0010] Furthermore, the wiring harness body also includes an additional branch,

[0011] The additional branches are connected to the sensors and solenoid valves on the engine.

[0012] Furthermore, the vehicle interface branch is connected to the transition line and connected to the front enclosure of the cab through the transition line.

[0013] Furthermore, the injector interface branch is connected to the injector through an in-cylinder line inside the engine.

[0014] Furthermore, the engine wiring harness adopts the National Five system wiring harness.

[0015] Those skilled in the art can understand that the present application has at least the following beneficial effects:

[0016] The utility model realizes the in-cylinder braking function and integrates the post-processing relay on the basis of the traditional National Five engine wiring harness, reduces the complicated plug-in components of the National Five system wiring harness (engine wiring harness and post-processing wiring harness), simplifies the construction process, reduces the production cost, and makes the National Five wiring harness system layout simple and smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Some embodiments of the present disclosure are described below with reference to the accompanying drawings, in which:

[0018] Figure 1 It is a schematic diagram of a heavy-duty vehicle engine wiring harness structure provided in an embodiment of the present application.

[0019] Figure 2It is a schematic diagram of the structure of the post-processing wiring harness relay wiring harness provided in an embodiment of the present application.

[0020] Description of main reference numerals:

[0021] 1. Wire harness body; 2. Vehicle interface branch; 3. ECU branch; 4. Injector interface branch; 5. SCR interface branch; 6. Transition line; 7. Cab front panel; 8. Electronic control unit; 9. Injector; 10. Post-processing harness relay harness; 101. Normal power input terminal; 102. Main relay; 103. First heating resistor; 104. Second heating resistor; 105. Third heating resistor; 106. Fourth heating resistor; 107. First relay; 108. Second relay; 109. Third relay; 1010. Fourth relay; 11. In-cylinder wire. DETAILED DESCRIPTION

[0022] It should be understood by those skilled in the art that the embodiments described below are only preferred embodiments of the present disclosure, and do not mean that the present disclosure can only be implemented through the preferred embodiments. The preferred embodiments are only used to explain the technical principles of the present disclosure, and are not used to limit the protection scope of the present disclosure. Based on the preferred embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present disclosure.

[0023] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0024] The technical solution proposed in the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0025] Figure 1 A heavy-duty vehicle engine wiring harness is provided in an embodiment of the present application. Figure 1As shown, the engine wiring harness provided by the embodiment of the present application includes: a wiring harness body 1 installed on the periphery of the engine, and the wiring harness body 1 includes: a vehicle interface branch 2, an ECU branch 3, an injector interface branch 4 and an SCR interface branch 5; wherein the vehicle interface branch 2 is connected to the transition line 6 (it can be supplemented that the vehicle interface branch 2 is connected to the transition line 6, and then connected to the cab front panel 7 through the transition line 6); the ECU branch 3 is connected to the electronic control unit 8 installed on the engine; the injector interface branch 4 is connected to the injector 9; the SCR interface branch 5 is connected to the post-processing wiring harness relay harness 10 (specifically, the injector interface branch 4 is connected to the injector 9 through the cylinder line 11 inside the engine).

[0026] It should be noted that the engine wiring harness adopts the National Five system wiring harness.

[0027] Among them, Figure 2 As shown, the post-processing harness relay harness 10 includes: a normal power input terminal 101 (the normal power input terminal 101 is 24V normal power), a main relay 102, a first heating resistor 103, a second heating resistor 104, a third heating resistor 105, a fourth heating resistor 106, a first relay 107, a second relay 108, a third relay 109, and a fourth relay 1010; wherein, the normal power input terminal 101 is connected to the main relay 102, the output terminal of the main relay 102 outputs a 24V voltage, and the output terminal of the main relay 102 is respectively connected to the first heating resistor 103, the second heating resistor 104 , the third heating resistor 105, and the fourth heating resistor 106 are connected, and the first heating resistor 103, the second heating resistor 104, the third heating resistor 105, and the fourth heating resistor 106 are respectively connected to the electronic control unit 8, and the first heating resistor 103 is connected to the first relay 107, the second heating resistor 104 is connected to the second relay 108, the third heating resistor 105 is connected to the third relay 109, the fourth heating resistor 106 is connected to the fourth relay 1010, and the first relay 107, the second relay 108, the third relay 109, and the fourth relay 1010 are output to the ground respectively.

[0028] Based on the above description, the SCR interface branch 5 is connected to the post-processing harness relay harness 10 , specifically, it can be connected to the SCR interface branch 5 through the normal power input terminal 101 .

[0029] In addition, the wiring harness body 1 also includes additional branches, which are connected to sensors and solenoid valves on the engine.

[0030] Based on the above description, it can be understood by those skilled in the art that the present application discloses a heavy-duty vehicle engine wiring harness, the wiring harness body 1 is installed on the periphery of the engine, and the wiring harness has four main branches: the vehicle interface branch 2 is connected to the transition line 6, and is connected to the cab front wall 7 through the transition line 6; the ECU branch 3 is connected to the electronic control unit 8 installed on the engine; the injector interface branch 4 is connected to the cylinder line 11 inside the engine; the SCR interface branch 5 is connected to the post-processing wiring harness, and the remaining branches are connected to the sensors and solenoid valves on the engine. The utility model realizes the in-cylinder braking function and integrates the post-processing relay on the basis of the traditional National Five engine wiring harness, reduces the complicated plug-in components of the National Five system wiring harness (engine wiring harness and post-processing wiring harness), simplifies the construction process, reduces the production cost, and makes the layout of the National Five wiring harness system simple and smooth.

[0031] So far, the technical solutions of the present disclosure have been described in combination with the above multiple embodiments, but it is easy for those skilled in the art to understand that the protection scope of the present disclosure is not limited to these specific embodiments. Without departing from the technical principles of the present disclosure, those skilled in the art can split and combine the technical solutions in the above-mentioned various embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principle of the present disclosure will fall within the protection scope of the present disclosure.

Claims

1. A heavy-duty vehicle engine wiring harness, characterized in that: The engine wiring harness comprises: a wiring harness body installed on the periphery of the engine, and the wiring harness body comprises: a vehicle interface branch, an ECU branch, an injector interface branch and an SCR interface branch; Among them, the vehicle interface branch is connected to the transition line; the ECU branch is connected to the electronic control unit installed on the engine; the injector interface branch is connected to the injector; and the SCR interface branch is connected to the post-processing harness relay harness.

2. The heavy-duty vehicle engine wiring harness according to claim 1, characterized in that: The post-processing harness relay harness includes: a normal power input terminal, a main relay, a first heating resistor, a second heating resistor, a third heating resistor, a fourth heating resistor, a first relay, a second relay, a third relay, and a fourth relay; Among them, the normal power supply input end is connected to the main relay, the main relay output end outputs 24V voltage, and the main relay output end is respectively connected to the first heating resistor, the second heating resistor, the third heating resistor, and the fourth heating resistor, and the first heating resistor, the second heating resistor, the third heating resistor, and the fourth heating resistor are respectively connected to the electronic control unit, and the first heating resistor is connected to the first relay, the second heating resistor is connected to the second relay, the third heating resistor is connected to the third relay, the fourth heating resistor is connected to the fourth relay, and the first relay, the second relay, the third relay, and the fourth relay are respectively output to the ground.

3. The heavy-duty vehicle engine wiring harness according to claim 2, characterized in that: The normal power input terminal is connected to the SCR interface branch.

4. The heavy-duty vehicle engine wiring harness according to claim 2, characterized in that: The normal power input terminal is 24V normal power.

5. The heavy-duty vehicle engine wiring harness according to claim 1, characterized in that: The wiring harness body also includes an additional branch, The additional branches are connected to the sensors and solenoid valves on the engine.

6. The heavy-duty vehicle engine wiring harness according to claim 1, characterized in that: The vehicle interface branch is connected to the transition line and connected to the front enclosure of the cab through the transition line.

7. The heavy-duty vehicle engine wiring harness according to claim 1, characterized in that: The injector interface branch is connected to the injector through the in-cylinder line inside the engine.

8. The heavy-duty vehicle engine wiring harness according to claim 1, characterized in that: The engine wiring harness adopts the National Five system wiring harness.

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