What is automobile high pressure oil pipe


The high-pressure fuel pipe of a car has many parts, wh […]

The high-pressure fuel pipe of a car has many parts, which can be summarized as the steering system, the brake system, and the air-conditioning system. Each system is required to have good quality, can withstand a certain high pressure strength, and anti-corrosion.
Common materials
High pressure steel wire braided hose, large diameter high pressure hose, high pressure steel wire wound hose, steel wire or fiber reinforced nylon elastomer resin tube, steel wire reinforced hose, high temperature resistant hose, polyurethane hose, etc.
1. The high-pressure oil pipe is composed of a steel wire wound frame layer, internal and external oil-resistant rubber, corrosion-resistant synthetic rubber, weather-resistant special rubber, and special metal materials.
2. In addition to its own characteristics, there are also higher requirements for the liquid (oil) fluid in the pipeline. Otherwise, the transmission of "energy" will be "destroyed": if the boiling point of the oil is too low, the production of vapor bubbles will be reduced. Braking effect, etc. Therefore, the oil product should first meet certain viscosity standards, because the viscosity change of the oil is directly related to the hydraulic action, transmission efficiency and transmission accuracy; in addition, it is also required that the viscosity-temperature performance and shear stability of the oil should meet the requirements of different applications. need.
High-pressure oil pipes are more commonly used in industries such as automobiles, excavators or loaders, rollover trucks, hydraulic boosters, hydraulic supports, cement pipes, agricultural irrigation hoses, hydraulic oil pipes for construction machinery, special vehicles, subsea gas transportation and petroleum transportation.

Application in car
(1) Braking system
The brake system mostly uses metal pipes. Because metal has no elasticity, it will not expand at any time due to the increase in liquid pressure, which can fully ensure the transmission of braking force. The main feature is: a "medium" that uses liquid (oil) pressure to transmit the braking energy of the hydraulic system, and plays the role of energy transmission, system lubrication, anti-corrosion, rust prevention, and cooling in the hydraulic system. Therefore, the requirements for this "high-pressure" pipeline for transferring energy are very strict. It is not a common material that can be replaced. Nowadays, metal materials are mostly used, but there are more wire-like wraps when it comes to the brake disc (disc). The reason for the rubber tubing is determined by the steering changes of the tires and the flexibility of the components to follow.
(2) Directional boost high-pressure pipe:
Most of them are mechanical or electronic power-assisted systems. When the power-assisted pump is working (mechanical non-stop working, electronic working under the control of the control unit in time), it is driven by the kinetic energy of the engine (mechanical) or an independent drive motor Drive (electronic) to drive the oil pressure in the electronic hydraulic pump to output in a high-pressure state to make the hydraulic system piston move in a certain direction, thereby reducing the intensity of "manual" operation and achieving the purpose of "saving labor". For this kind of oil pipe, it is also a special oil pipe that requires multiple functions such as pressure resistance, temperature resistance, lubrication, anti-corrosion, rust prevention, and cooling.
(3) Air-conditioning high-pressure pipe
The "liquid" (freon) of the air-conditioning system flows and forms high-pressure gas after vaporization (atomization).
Unlike household air conditioners, both cold and heat need to be obtained through compressor work. The car’s air conditioner design requires compressor work when cooling, and the hot air state can be provided by the engine part. When refrigerating, the high-temperature and high-pressure gas from the compressor is cooled by the unique structure inside the condenser to form a liquid state, and then flows through the throttle valve to reach the control pressure, adjust the pressure and enter the evaporating box.....It can be seen that The high-temperature and high-pressure gas (or liquid) flow direction needs to be "undertaken" by pipelines that can withstand high pressure. Therefore, the air-conditioning high-pressure pipe plays a very important role. Model design

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