Automotive Wiring Harness Design Principles

How to improve the comprehensive performance of automobile wiring harness has become the focus of attention, and it has become an inevitable trend to increase the joint development with automobile OEMs. Automotive wiring harness is the main network of automotive circuits. Without wiring harness, there would be no automotive circuit. With the improvement of people's requirements for the safety, comfort, economy and emission of automobiles, there are more and more electrical configurations and functions on automobiles, so the wiring harness connecting various electrical components is becoming more and more complex, which has become a frequent link of contemporary automobile failures, and therefore has attracted more and more attention in automobile design and manufacturing. Design of automobile wire harness The function of wire harness in the whole vehicle is to transmit or exchange power signals or data signals of the electrical system to realize the functions and requirements of the electrical system.

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Design process and manufacturing process of wire harness (1) The electrical layout engineer provides the functions, electrical loads and related special requirements of the electrical system of the whole vehicle. The state of the electrical device, the installation position, and the connection form between the wiring harness and the electrical device. (2) According to the electrical functions and requirements, draw the electrical schematic diagram and wiring diagram of the whole vehicle. (3) Distribute energy to each electrical subsystem and circuit according to the electrical principle coil, including the ground wire of power supply and the distribution of ground points. (4) According to the distribution of electrical components of each subsystem, determine the wiring form of the wiring harness, the electrical components connected by each wiring harness and their direction on the automobile; Determine the external protection form of the wiring harness and the protection of the via; Determine the fuse or circuit breaker according to the electrical load; Recoloring; According to the connector of the electrical device itself, determine the model of the terminal and sheath connected to it on the wiring harness.

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