Direct control type shell deformation fluid injector for novel engine

Abstract

The invention discloses a direct control type shell deformation fluid injector for an engine, which comprises a closed shell and a fluid leading-in interface, wherein a valve is arranged in an inner cavity of the closed shell, the valve consists of a valve tail, a valve rod and a valve head, the valve head is designed as an inner open valve head or an outer open valve head, the valve tail is directly or indirectly connected with one part of the closed shell, another part of the closed shell is provided with a valve opening, the valve head is arranged in a matching mode with the valve opening, the valve head can close the valve opening airtightly and can also open the valve opening, at least one deformation area is arranged between the joint of the closed shell and the valve tail and the valve opening, the inner cavity is communicated with the fluid leading-in interface, the fluid leading-in interface is communicated with a high-pressure fluid source, and the deformation area is directly or indirectly controlled by a control mechanism. The direct control type shell deformation fluid injector for the engine has the advantages of simple structure, small volume 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, high-pressure common rail and solenoid valve control injection technologies have been widely used, but most of the current fluid injectors have large volumes 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. For this reason, the applicant has disclosed a casing deformation fuel injector (patent application number is 200910136036....

AI Technical Summary

Problems solved by technology

In the existing injection technology and in the shell deformation fuel injector for the engine disclosed by the inventor, a timing pulse fuel source is required, and this structure is to make the injection valve or The housing is displaced or deformed to complete fuel injection, so the accuracy and injection response of fuel injection are considerably limited

Moreover, due to the higher sealing requirements of high-temperature and high-pressure gas or water vapor, and poorer lubricity, the current fuel injection system cannot be applied to the injection of high-temperature and high-pressure gas or water vapor.

Images