Valve sheet deformation fuel injector for engine

Abstract

The invention discloses a valve sheet deformation fuel injector for an engine, which comprises a closed shell and a fuel inlet interface. The inner wall of the closed shell is provided with a supporting table; the supporting table is provided with an elastic valve sheet; the elastic valve sheet is supported by the supporting table; the supporting table is provided with a supporting table sealing surface; the elastic valve sheet is provided with a valve sheet sealing surface; the supporting table sealing surface is matched with the valve sheet sealing surface; the supporting table and / or the elastic valve sheet are / is provided with a channel; the elastic valve sheet and the supporting table are matched to form a sealing region and a communicating region; the closed shell is divided into anupper cavity and a lower cavity by the elastic valve sheet; the lower cavity is a fuel distribution region; the upper cavity is communicated with a timing pulse fuel source through the fuel inlet interface and a vitta; and the wall of the fuel distribution region is provided with a fuel injection hole. The valve deformation fuel injector for the engine has simple structure, low manufacturing costand rapid injection response.

Description

technical field [0001] The invention relates to the field of engines. Background technique [0002] Fuel injection technology is one of the most important technologies to improve engine efficiency and reduce engine emissions. In recent years, in the field of fuel injection technology for diesel engines and gasoline engines, although the fuel injection pressure has been continuously improved, and high-pressure common rail and solenoid valve control injection technologies have been widely used, most of the current fuel injectors have large volume and high manufacturing costs. , fuel injection response is slow and other disadvantages, especially the diesel injector needs to be equipped with oil return system, plunger couple and valve, the structure is complex, which restricts the improvement of engine efficiency and environmental protection performance. Therefore, the applicant invented a fuel injector with simple structure, low manufacturing cost, small volume and fast inject...

AI Technical Summary

Problems solved by technology

In recent years, in the field of fuel injection technology for diesel engines and gasoline engines, although the fuel injection pressure has been continuously improved, and high-pressure common rail and solenoid valve control injection technologies have been widely used, most of the current fuel injectors have large volume and high manufacturing costs. , slow fuel injection response and other shortcomings, especially diesel injectors need to be equipped with an oil return system, plunger couple and valves, and the structure is complex, which restricts the improvement of engine efficiency and environmental protection performance

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