Common rail tube

Abstract

The invention discloses a common rail pipe. The common rail pipe is characterized in that a throttling filter is arranged in an inner hole of an oil port of an oil inlet or / and an oil outlet of the common rail pipe, the throttling filter comprises an oil inlet end cylindrical section, an oil inlet end circular truncated cone section, an oil outlet end circular truncated cone section and an oil outlet end cylindrical section which are sequentially arranged in the axial direction, the oil inlet end cylindrical section and the oil outlet end cylindrical section are in tight fit with the inner hole of the oil port, gaps are reserved between the oil inlet end circular truncated cone section as well as the oil outlet end circular truncated cone section and the inner hole of the oil port, an oilinlet groove and an oil outlet groove which extend in the axial direction and are arranged at intervals are arranged on the surface of the throttling filter, the oil inlet groove starts from the oil inlet end cylindrical section and stops at the oil outlet end circular truncated cone section, and the oil outlet groove starts from the oil outlet end cylindrical section and stops at the oil inlet end circular truncated cone section. According to the common rail pipe, the throttling function and the filtering function on high-pressure fuel oil are achieved, so that the blockage failure rate, caused by particle impurities, of an oil atomizer is effectively reduced, and a prominent contribution is made to normal operation of an engine.

Description

technical field [0001] The invention relates to the technical field of engine components, in particular to a common rail pipe. Background technique [0002] High-pressure common rail EFI technology refers to a fuel supply method that completely separates the generation of injection pressure from the injection process in a closed-loop system composed of a high-pressure oil pump, a pressure sensor and an electronic control unit (ECU). The high-pressure common rail system includes high-pressure oil pumps, common rail pipes and high-pressure oil pipes, fuel injectors, electronic control units, various sensors and actuators, etc. The fuel supply pump pumps fuel from the fuel tank into the fuel inlet of the high-pressure fuel pump, and the high-pressure fuel pump driven by the engine pressurizes the fuel and sends it into the common rail cavity, and then the solenoid valve controls the fuel injectors of each cylinder to inject fuel at the corresponding time. [0003] Among them, ...

AI Technical Summary

Problems solved by technology

[0005] The throttle valve 20 with the above structure only has a single throttling function and does not have the function of filtering fuel. If there are large particles of impurities in the fuel, it is very easy to cause the flow channel inside the throttle valve or / and the fuel injector to be stuck. , affecting the normal operation of the engine

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