Where is the PET telescopic woven mesh pipe network tube used in the high-end automotive wiring harness?

The automobile wiring harness is the Internet behavior subject of the automobile power supply circuit. Without the wiring harness, there will be no automobile power supply circuit. The wire harness refers to the components that are made of cold-extruded copper material, the contact terminal and the cable and wire are riveted, and the outside is re-molded with an insulator or a metal material shell, etc., and the wire harness is used to bind the components to form the connection circuit. The whole industry chain of wire harness includes cables and wires, radio frequency connectors, production equipment, wire harness manufacturing and midstream and downstream application industry chain.

Wire harness is widely used and can be used in automobiles, electrical products, computers and communication equipment, and various electronic devices In terms of instrumentation, etc., the car body wiring harness is connected to the entire car body, and the general shape is H-shaped.

In recent years, in addition to the real estate industry in China, which is the most suitable for our hearts, there is also a car. Every successful man wants to own a new house and a small car. When it comes to cars, PET stretches overseas. In the braided network management industry, the most discussed is the PET telescopic woven mesh pipe network tube for automobiles. This is mainly because the automobile industry itself has changed since the 1970s, mainly due to changes in the cost of gasoline and diesel, the replacement of refrigerants, the shrinking of the engine cover, and the tight arrangement of internal parts, which makes the engine compartment of the car The temperature is greatly increased. In addition to the car itself, environmental protection regulations stipulate that the consumption of gasoline, diesel and refrigerant into the air cannot exceed the required specifications.
(1) Turbocharged PET telescopic woven mesh pipe mesh tube
The use of diesel engines in automobiles is increasing, because the volatile matter of diesel engines is smaller than that of motor gasoline. Diesel engines, and even engines, need to be turbocharged, which requires PET telescopic woven mesh pipe to transport gas. One end of this type of PET telescopic braided mesh pipe generally bears a temperature of 210°C, and the other end is generally 160°C. Therefore, the PET telescopic woven mesh pipe of the supercharger should have excellent heat resistance. The supercharger PET telescopic woven mesh pipe is composed of a silicone lining, a fluorine rubber inner rubber layer, an aromatic fluorobenzene chemical fiber reinforcement layer and a silicone outer rubber layer.
(2) Air-conditioning PET telescopic woven mesh pipe
The change of the air-conditioning PET telescopic woven mesh pipe network pipe is mainly due to the replacement of the refrigerant. The original CFC-12 has been replaced by HFC-134a, and the lubricating fluid used for the refrigerant has been changed to polyalkylene glycol (PAG). In order to better resist heat and refrigerant infiltration, the plastic particles of the inner rubber layer of the air-conditioning PET telescopic woven mesh pipe have been changed from NBR to IIR or HNBR, and some inner rubber layers are lined with a layer of acrylic resin lining.
In the beginning, the PET telescopic woven mesh pipe network pipe of automobile air conditioner was made of thermosetting plastic-polyester 11, but it has been basically replaced now, because the hard polyester will transmit noise and vibration from the refrigeration compressor and automobile engine to the cab of the automobile, while the high-pressure soft Tubes have no downsides.
(3) Fuel PET telescopic woven mesh pipe
The inner rubber layer of fuel PET telescopic woven mesh pipe generally uses NBR, but with the use of oxygen-containing fuel and electronic injection devices, gasoline and diesel PET telescopic woven mesh pipe are required to have lower water permeability, and most of the inner layer is now A composite structure is adopted, with a thin layer of FKM (fluorine rubber) lining the inside of the inner rubber layer, or a thin layer of acrylic resin covering the outer edge of the inner rubber layer, so that the inner rubber layer becomes a double-layer structure.