What are the functions of an automotive wiring harness?

ONE. What are the functions of an automotive wiring harness? In modern automobiles, the electronic control system has a close relationship with the wiring harness. Someone once played a figurative analogy: the microcomputer is equivalent to the human brain, the sensor is equivalent to the sensory organs, the executive element is equivalent to the movement of the tube, then the wiring harness is the nerves and blood vessels. Automotive wiring harness from the function up to points, there are carrying drive the executive element (actuator) power line and the transmission of sensor input instruction signal line two kinds. The power line is a thick wire that carries a large current, while the signal line is a thin wire (optical fiber communication) that does not carry power. In the motor, the executive element with the wire cross-sectional area of 0.85, 1.25mm2, while the power circuit with the wire cross-sectional area of 2, 3, 5mm2; and special circuits (starter, alternator, engine grounding wire, etc.) are 8, 10, 15, 20mm2 different specifications. The choice of wire, in addition to considering the electrical properties, but also by the vehicle when the physical properties of the constraints. For example, the wires between the frequently opened/closed doors and across the body of a rental car should be composed of wires with good flexural properties. The use of electromagnetically shielded wires for weak signal circuits has also been increasing in recent years. With the increase in automobile functions, the universal application of electronic control technology, the number of circuits on the car with a significant increase in power consumption, the wiring harness has become thicker and heavier, how to make a large number of wiring harness in the limited space of the car how to be more effective and reasonable arrangement, so that the automobile wiring harness to play a greater function, has become a problem faced by the automobile manufacturing industry.

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