Automotive wiring harness information

Automotive wire is also called the low voltage power lines, it has to do with ordinary household electric wires are not the same. Ordinary household electric wires are ChanRui copper wire, there is a certain hardness. The car more than copper wires are a core soft lines, some fine soft wire such as hair, several or even dozens of annealed copper wire wrapped in plastic insulation tube ( Polyvinyl chloride) Inside, soft and not easy to break. Due to the particularity of the auto industry, automotive wiring harness manufacturing process is better than other ordinary wire. The system in manufacturing automotive wiring harness can be divided into two categories: 1. In European and American countries, including China, to control the manufacturing process by using TS16949 system. 2. Give priority to with Japan, such as Toyota, Honda, they have their own system to control the manufacturing process. With the increase of car function, widespread application of electronic control technology, more and more electrical parts, wires will be more and more, the heavier wire also becomes thicker. The car that is so advanced introduces CAN bus configuration, the multiplex system. Compared with the traditional wiring harness, multi-channel device greatly reduces the wire and the number of plug-ins, make the wiring more easily. Much on modern cars, automotive wiring harness, electronic control system has close relationship with wiring harness. Someone once made a parable of the image: if the function of the computer, sensors and actuators analogy with the human body, can say computer equivalent of a human brain, sensor of sense organs, executive element is equal to the sport organs, so wiring harness is the nerves and blood vessels. Automotive wiring harness is the network main body of the circuit, connected to the vehicle electrical and electronic components to function, no wiring harness and there is no car circuit. At present, whether senior luxury car or economical ordinary cars, wiring harness plait is basically the same, in the form of are composed of wire, al plug-in and parcel tape, it should not only ensure transmit electrical signals, also want to ensure the reliability of the connection circuit, to supply electrical components as prescribed by the current value, preventing electromagnetic interference of peripheral circuit, and to exclude the electrical short circuit. Automotive wiring harness points from the function, carrier have driven actuators ( Actuator) The electricity power and transmit the signal lines of two input commands. Power line is the thick wire carrying large current, and the fine wires is not carrying power line ( Optical fiber communication) ; For example, the signal circuit using cross-sectional area 0. 3, 0. 5mm2。 In motor, cross-sectional areas of actuators used to 0. 85, 1. Was 25, while the power supply circuit with a cross-sectional area of 2, 3, 5 was; The special circuit ( Starter, alternator, engine ground wire, etc. ) Has 8, 10, 15, 20, was different specifications. The conductor cross-sectional area, the greater the current capacity. Wire choice, in addition to consider the electrical properties, and is restricted by the car when the physical properties, so its range is very wide. For example, the taxi frequently open/close the door and across the body between the wires should be composed of flexural performance good conductor. The parts used in high temperature wire, general use insulation and heat resistance good vinyl chloride, polyethylene coated wire. In recent years, the weak signal circuit, the use of electromagnetic shielding line is also increasing. With the increase of car function, widespread application of electronic control technology, more and more electrical parts, wires will be more and more, the circuit on the car quantity and power consumption increased significantly, the heavier wire also becomes thicker. This is a big problem to be solved, how to make a lot of wiring harness how to be more effective in the limited space reasonable decorate, make the function of auto harness play a more important, has become the auto industry are faced with the problem.
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