Directly controlled shell body deformation fluid ejector for engine

Abstract

The invention discloses a directly controlled shell body deformation fluid ejector for an engine, which comprises a closed shell body and a fluid guide-in interface. The internal cavity of the closed shell body is internally provided with a valve body which consists of a valve tail, a valve stem and a valve head. The valve head is designed as a swing-in valve head or a swing-out valve head. The valve tail is connected with one part of the close shell body, another part of the close shell body is provided with valve holes. The valve head is installed with the valve holes in a matching manner, can seal and close the valve holes, and can also open the valve holes. At least one elastic area is arranged on the connecting part between the closed shell body and the valve tail and between the valve holes. The internal cavity is communicated with the fluid guide-in interface, while the fluid guide-in interface is communicated with a high-voltage fluid source. The connecting part between the closed shell body and the valve tail is controlled by a controller. The directly controlled shell body deformation fluid ejector for the engine has simple structure, small size and quick ejection response.

Description

technical field [0001] The invention relates to the field of engines, in particular to a direct-control casing deformation fluid 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, 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 dis...

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.

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