Automotive wiring harness design principles

Automotive wiring harness is the main network of automotive circuit, there is no automotive circuit without wiring harness. As people on car safety, comfort, economy and emission requirement, car appliances configuration, function more and more, so a connect the electrical wiring harness is becoming more and more complex, become a link with contemporary car trouble, and therefore in car design and manufacturing is more and more attention. How to improve the comprehensive performance of automobile wiring harness has become the focus of attention. It has become an inevitable trend to increase the joint development with automobile main engine factory.

The function of wire harness in the whole vehicle is to transfer or exchange the power signal or data signal of the electrical system to realize the functions and requirements of the electrical system.

Wiring harness design and manufacturing process

(1) the electrical layout engineer shall provide the functions of the electrical system, electrical load and related special requirements. The state of electrical parts, installation position, wiring harness and electrical parts butt joint form.

(2) according to the electrical functions and requirements, draw the electrical schematic diagram and circuit diagram of the vehicle.

(3) energy distribution for each electrical subsystem and loop according to the electric principle circle, including the tie wire of the power supply and the distribution of the connecting point.

(4) according to the distribution of electrical parts of each subsystem, determine the wiring form of wire harness, the electrical parts connected by each wire harness and the direction of the car; Determine the outer protection form of wire harness and the protection through hole; Determine the fuse or circuit breaker according to the electrical load; Again the color; Determine the type of terminal and sheath on the wire harness according to the connector of the appliance itself.