In automotive there are a lot of car wiring harnesses, and the electronic control system is closely related to the wire harness. As the protector of the wire harness, braided cable sleeve is necessary.
Someone once used an image metaphor. If the functions of the microcomputer, the sensor and the actuator are compared to the human body. It can be said that the microcomputer is equivalent to the human brain, the sensor is equivalent to the sensory organ, and the actuator is equivalent to the moving organ. Then the harness is the nerve, and PET braided cable sleeve is blood vessels.
The automotive wiring harness is the main body of the automobile circuit, which connects the electrical and electronic components. And wire harness allows the various parts of the car to function and operate well.
So cable management is important. The choice of wire sleeve is a problem that must be considered. Since wire harness must ensure the transmission of electrical signals and the connection of circuits. Reliability, supply specified current values to electrical and electronic components, prevent electromagnetic interference to surrounding circuits, and eliminate electrical short circuits.
The braided cable sleeve made of polyester (PET) monofilament of free halogen. Polyester sleeving is able to expand up to 2 times its normal size, good flexibility, heat dissipation.
The automotive wiring harness is functionally divided into a power line carrying electric power for driving an actuator (actuator) and a signal line for transmitting a sensor input command.
The power line is a thick electric wire that carries a large current, usually we use a self closing cable wrap to protect it. A the signal line is a thin electric wire (optical fiber communication) that does not carry electric power; for example, the cross-sectional area of a wire for a signal circuit is 0.3, 0.5 mm2. So we use PET braided cable sleeve, 20-100mm of the flat width can be selected.
The cross-sectional area of the wire for the motor and the actuator is 0.85 and 1.25 mm2, and the cross-sectional area of the power supply circuit is 2, 3, and 5 mm2; and the special circuit (starter, alternator, engine grounding wire, etc.) has 8. 10, 15, 20mm2 different specifications. The larger the cross-sectional area of the wire, the larger the current capacity. Pipes requiring high flame retardancy, heat insulation and wear resistance. Therefore metal wave tubes can be used.
The choice of wires, in addition to considering the electrical performance, is also subject to the physical properties of the vehicle, so the choice is very wide. Therefore selection of the corresponding cable cover has also increased. So cable sleeve has been used more widely in automotive wire harenss.
For example, frequent on/off doors on a taxi and wires that span the body should be made up of wires with good flexing properties. The flexibility and wear resistance of expandable polyester sleeving are reflected. Wires used in places where the temperature is high are generally made of vinyl chloride or polyethylene coated with good insulation and heat resistance. Polyester sleeving Melting point: +240°C, Working temperature range: -50°C — +150°C, Flammability : VW-1. In recent years, electromagnetic shielding wire used in weak signal circuits have also increased.
With the increase of the functions of automobiles, the universal application of electronic control technology. More and more electrical components and wires, the number of circuits and the amount of electricity used in automobiles have increased significantly. Therefore the wire harness has become thicker and heavier. The expandable braided polyester sleeving is Lightweight, so it replaces the wave pipe.
This is a big problem that needs to be solved. How to make a large number of wire harnesses more efficiently and reasonably arranged in a limited car space, and make the car wire harness play a greater function. Therefore automotive braided sleeving will solve it.
If you’re interesting in braided cable sleeve, please contact us.