Shell deformation fuel injector for novel engine

Abstract

The present invention discloses a shell deformation fuel injector for an engine, which comprises a closed shell and a fuel feeding interface, wherein a valve is arranged in an inner cavity of the closed shell, the valve consists of an inner open valve head, a valve rod and a valve tail, the valve tail is directly or indirectly connected with one part of the closed shell, another part of the closed shell is provided with an inner open valve opening, the inner open valve head can close the inner open valve opening airtightly and can also open the inner open valve opening, at least one deformation area is arranged between the joint of the closed shell and the valve tail and the inner open valve opening, the end part of the deformation area at the valve tail side is provided or not provided with a deformation control device, the inner cavity is directly or indirectly communicated with the fuel feeding interface, and the fuel feeding interface is communicated with a timing pulse fuel source through a fuel pipe or the fuel pipe and then a control valve. The shell deformation fuel injector for an engine has the advantages of simple structure, small volume, low manufacturing cost, and quick 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. , slow fuel injection response, etc., especially diesel injectors need to be equipped with high-precision plunger parts, the manufacturing process is complicated, and because the plunger parts are not self-compensating, no matter how high-precision they are, there will be fuel leakage, which requires There is an oil return system, so the existing fuel injection technology and injectors restrict the impro...

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, etc., especially diesel injectors need to be equipped with high-precision plunger parts, the manufacturing process is complicated, and because the plunger parts are not self-compensating, no matter how high-precision they are, there will be fuel leakage, which requires There is an oil return system, so the existing fuel injection technology and injectors restrict the improvement of engine efficiency and environmental performance

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