Integrally molded continuous variable valve timing fuel control valve

Abstract

The invention discloses an integrally molded continuous variable valve timing fuel control valve, which comprises a valve sleeve component, a rear yoke iron component, a front yoke iron component, an iron core component, an outer yoke sleeve bracket (5), and a winding component (16) consisting of a frame (9), an enameled wire (10) and a plug plate (11), wherein the valve sleeve component consists of a valve sleeve (1), a return spring (2), a valve core (3) and a front ring (4); the rear yoke iron component is formed by riveting rear yoke iron (6) and a guide sleeve (14); the front yoke iron component is formed by riveting the front yoke iron (7) and the guide sleeve (14); and the iron core component is formed by riveting a shaft (12) and an iron core (13). The integrally molded continuous variable valve timing fuel control valve has the advantages that: the control valve meets the requirement of the iron core component on coaxility, the manufacturing cost of the fuel control valve is reduced, the structure of the control valve is simplified, the performance of the control valve is more stable, sand the installation requirements of various complicatedly shaped engines can be met.

Description

technical field [0001] The invention relates to an integrally formed continuously variable valve timing fuel control valve. Background technique [0002] With the continuous development and improvement of modern manufacturing technology, the die forging and steel casting process has also been greatly developed. Parts can be used directly with little or no processing. The mature application of multi-cavity die forging and steel casting technology has significantly improved production efficiency and reduced manufacturing costs. [0003] Since the current process adopts the welding and forming technology of the mounting bracket and the outer yoke sleeve, the high temperature generated during welding will cause the overall heating of the outer yoke sleeve to be uneven, thereby changing the distribution uniformity of the magnetic coercive force of the outer yoke sleeve. The products produced cannot guarantee the stability performance, and the roundness and coaxiality of the two ...

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Problems solved by technology

[0003] Since the current process adopts the welding and forming technology of the mounting bracket and the outer yoke sleeve, the high temperature generated during welding will cause the overall heating of the outer yoke sleeve to be uneven, thereby changing the distribution uniformity of the magnetic coercive force of the outer yoke sleeve. The products produced cannot guarantee the stability performance. In addition, due to the uneven heating of the outer yoke, the roundness and coaxiality of the two ports cannot meet the assembly requirements.

[0004] In order to improve the distribution uniformity of the magnetic coercivity of the outer yoke, the upper magnetic annealing process is generally adopted, which increases the manufacturing cost of the parts. The high temperature of the upper magnetic annealing will also cause the deformation of the outer yoke sleeve port. In order to meet the assembly requirements, the port The shaping process increases manpower and equipment costs

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