Shell deformation fuel injector for engine

Abstract

The invention discloses a shell deformation fuel injector for an engine, which comprises a closed shell and a fuel inlet interface. An inner cavity of the closed shell is provided with a valve body; one end of the valve body is connected with one end of the closed shell; the other end of the closed shell is provided with a valve hole; the other end of the valve body is provided with a valve head;the matching surface of the valve head and the valve hole is a plane, a conical surface or a curved surface; the valve head can seal and close the valve hole and also can open the valve hole; the closed shell is at least provided with one elastic region; the inner cavity of the closed shell is directly or indirectly communicated with the fuel inlet interface; and the fuel inlet interface is communicated with a timing pulse fuel source directly or through a vitta. The shell deformation fuel injector for the engine has simple structure, small volume, low manufacturing cost and rapid injection response.

Description

technical field [0001] The invention relates to the field of engines, in particular to a casing deformation fuel injector for the engine. 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 s...

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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