The harness is the connection part in the circuit to connect all electrical equipment, which is composed of insulating sheath, terminal blocks, wire and insulation dressing materials. In modern cars, there are many automotive wiring harnesses. The electronic control system is closely related to the automotive wire harness. Someone once played a vivid metaphor: if describe the computer, sensors and actuators as the body, the computer can be said to be equivalent of the human brain, the sensor is equivalent to the sensory organs, the actuator is equivalent to the motion tube, then the harness is nerve and blood vessels.
Function of automotive wiring harness
The automotive wiring harness is the main network body of the car circuit, connecting the car's electrical and electronic components and fully exerting their function. There are no automotive circuits if the harness does not exist. At present, whether it is ordinary senior luxury car or economy car, harness woven form is basically the same, which is composed by the wires, associated plug-ins and parcel tape. It has to ensure to transmit electrical signals, but also ensure the reliability of the connection circuit, supplying predetermined current value to electrical and electronic components, to prevent the electromagnetic interference to the surrounding circuitry, which also needs to exclude the short-circuit of electrical equipment.
Classification of automotive wiring harness
Divided by function, the automotive wiring harness is available for the electricity power line carrying drive actuator (actuating) and the signal line passing the sensor inputs instruction. The power line is coarse wire carrying large current while the signal line is thin wires not carrying electricity (optical fiber communication); for example, the cross-sectional area of signal circuits is 0.3, 0.5 mm2.
The problem faced by the automobile manufacturing industry
With the increase of the car features and the universal application of the electronic control technology, the electrical parts are more and more, the wire will be more and more. The circuit quantity in the car and electricity consumption is significantly increasing, the harness will become coarser and heavier, which is the big problem need to be solved by electrical cable manufacturer. How to make a lot of harness to be more effectively and reasonably laid in the limited space in the car and how to make the automotive wiring harness to play a greater function has become the problem facing by the automobile manufacturing industry.
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