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      3. Design process and manufacturing process of automotive wiring harness Release time:2018/9/25 19:23:23    Views:

        The function of automobile wiring harness in the whole vehicle is to transmit or exchange the power signal or data signal of the electrical system to realize the function and requirement of the electrical system. It is the main body of the automobile circuit, and there is no automobile circuit without wiring harness. The design and manufacture process of automotive wiring harness is very complicated. The engineer of wiring harness is required to be careful and meticulous. If the wiring harness is not well designed and the functions of each part can not be combined organically, the wiring harness may become a frequent link of automobile faults. Next, I briefly talk about the specific process of design and manufacture of automobile wiring harness.

        Firstly, the electrical layout engineer will provide the function, electrical load and related special requirements of the vehicle electrical system. The state of the electrical apparatus, the installation position, the wiring form of wiring harness and electrical appliances.

        Secondly, according to the electrical functions and requirements provided by the electrical layout engineer, the whole vehicle electrical schematic diagram and circuit diagram can be drawn.

        Thirdly, according to the electrical principle coil, each electrical subsystem and circuit is allocated energy, including the power supply line, and the distribution of grounding points.

        Fourth, according to the distribution of electrical components in each subsystem, determine the wiring form of the harness, the electrical components connected by each harness and the direction on the car; determine the external protection form of the harness and the through-hole protection; determine the fuse or circuit breaker according to the electrical load; and then determine the wire diameter according to the amount of the fuse or circuit breaker; According to the function of the electrical appliance, the wire color of the conductor is determined according to the relevant standards; according to the connector of the electrical appliance itself, the types of terminals and sheaths butted with the conductor harness are determined.

        Five, draw two dimensional wiring harness and 3D wiring harness layout.

        Sixth, according to the approved three-dimensional wiring harness layout map, check the two-dimensional wiring harness map, two-dimensional wiring harness map is accurate before the map can be issued, approved, according to the wiring harness map trial production.

        The above six processes are too general, the design of automotive wiring harness in the specific process, will encounter a lot of such problems, need the wiring harness designer calm and quiet analysis, to ensure the rationality and reliability of wiring harness design, to ensure the smooth progress of the entire vehicle circuit design.


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