High-pressure fuel pump diaphragm

The rubber hose of the automotive high-pressure fuel pump is a crucial component in the modern internal combustion engine's fuel supply system. It is responsible for delivering fuel to the engine combustion chamber at a certain pressure. The high-pressure fuel pump serves as a bridge connecting the fuel tank and the engine's fuel injector, and its importance is self-evident. The hose is an indispensable part of this system. The high-pressure fuel pump hose is usually made of special materials that are resistant to oil, temperature, and pressure.

Working principle

The rubber hose of the high-pressure oil pump is usually made of metal material, and its surface features a distinctive wave-like design. Its unique wave shape enables elastic deformation when subjected to external compression, thereby absorbing and distributing pressure, ensuring the stability of the pressure inside the oil pump.

In the automotive fuel system, the main task of the high-pressure oil pump is to extract oil from the fuel tank and increase its pressure before delivering it to the combustion chamber of the engine. During this process, the oil pump needs to generate pressures as high as several thousand pascals, which places extremely high demands on all components of the oil pump, especially the connecting pipes. The rubber hose emerged under this circumstance, significantly enhancing the reliability and safety of the fuel system.