Continuously variable valve timing fuel control valve with filter screens

Abstract

The invention discloses a continuously variable valve timing fuel control valve with filter screens, which comprises a front yoke iron assembly, a rear yoke iron assembly, an iron core assembly, a valve sleeve assembly, an external yoke sleeve support (5), an inlet angle fuel port (12), a winding assembly (13), filter screens (18) and a lag angle fuel port (20), wherein the winding assembly (13), wherein the back yoke iron assembly and a rear ring (8) are arranged on the rear end of the external yoke sleeve support (5), and the rear end is fixed by riveting; the iron core assembly, the valve sleeve assembly, the front yoke iron assembly and a front ring (19) are arranged on the front end of the external yoke sleeve support (5), and the front end is fixed by riveting; the filter screens (18) are respectively installed in the inlet angle fuel port (12) and the lag angle fuel port (20) on a valve sleeve (1), and the valve sleeve is sheathed with an external ring (17). By applying the invention, foreign matter can be effectively prevented from entering the fuel control valve, the clamping stagnation of the fuel control valve is reduced, the working reliability of the valve timing system is ensured, and the service life of the fuel control valve is prolonged.

Description

technical field [0001] The invention relates to a continuously variable valve timing fuel control valve, in particular to a continuously variable valve timing fuel control valve with a filter screen. Background technique [0002] The fuel control valve is an important part of the valve timing system in the engine. It is a high-precision control valve that requires high internal cleanliness. Foreign matter should be controlled within 0.3 mm in size and 2 mg in weight. [0003] During the processing and installation of the engine, it is difficult to ensure the cleanliness of the internal pipeline of the engine, there will be some tiny burrs and impurities; the engine still has carbon deposits in actual use, which will pollute the lubricating oil of the engine and wear between matching parts The resulting debris can also contaminate the lubricating oil, creating gum impurities. The entry of these tiny burrs and impurities into the fuel control valve may cause the control valve...

AI Technical Summary

Problems solved by technology

[0003] During the processing and installation of the engine, it is difficult to ensure the cleanliness of the internal pipeline of the engine, and there will be some tiny burrs and impurities; the engine still has carbon deposits in actual use, which will pollute the lubricating oil of the engine and wear between matching parts The resulting debris can also contaminate the lubricating oil, resulting in colloidal impurities

The entry of these tiny burrs and impurities into the fuel control valve may cause the control valve to stick, which affects the reliability of the valve timing system and reduces the service life of the engine.

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