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Electronic control diesel engine fuel injector with control valve

A technology of fuel injectors and control valves, which is applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problems of difficult processing of hemispherical valves and the inability to guarantee the consistency of hemispherical valve body processing, etc. The effect of small preload

Active Publication Date: 2013-05-15
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing of the hemispherical valve in this invention is quite difficult, and the processing consistency of the hemispherical valve body cannot be guaranteed.

Method used

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  • Electronic control diesel engine fuel injector with control valve
  • Electronic control diesel engine fuel injector with control valve
  • Electronic control diesel engine fuel injector with control valve

Examples

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0021] As shown in the figure: the electronically controlled diesel engine injector with control valve in the embodiment is mainly composed of armature 1, control valve seat 2, sealing ball seat 5, control valve 9, steel ball 13, connecting sleeve 15, throttle sealing plate 18. Control piston 25, armature return spring 27, electromagnetic driver 28, injector body 29 and other components.

[0022] Such as figure 1 As shown, the control valve is arranged in the inner cavity of the injector body 29, and the control valve is mainly composed of an armature 1, a control valve seat 2, a sealing fitting and a throttling sealing plate 18, and the throttling sealing plate 18 is placed on the installation end surface of the inner cavity of the injector body 29, the control valve seat 2 is placed on the throttling sealing plate 18, and the control valve seat 2 is threade...

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Abstract

The invention relates to an electronic control diesel engine fuel injector with a control valve. The electronic control diesel engine fuel injector with the control valve comprises a fuel injector body and the control valve which is arranged in an inner cavity of the fuel injector body. The electronic control diesel engine fuel injector with the control valve is characterized in that the control valve comprises an armature, a control valve base, a sealing matching member and a throttle sealing board. The throttle sealing board is placed on an installation end face of the inner cavity of the fuel injector body. The control valve base is placed on the throttle sealing board and is installed with the fuel injector body in a connected mode. The control valve base generates downward press force through installing torque to be pressed on the upper end face of the throttle sealing board, so that the lower end face of the throttle sealing board is tightly pressed on the installation end face of the inner cavity of the fuel injector body. The control valve is ingenious in structure, electronic control diesel engine fuel injector with the control valve applied is applicable to occasions with high pressure, pretightening force of a return spring of the armature of the common-rail fuel injector is greatly reduced, even though only small spring pretightening force is used, a pressure control cavity can be completely sealed, and highest pressure of a common-rail system can be improved to above 200 MPa.

Description

technical field [0001] The invention relates to an electronically controlled diesel engine fuel injector with a control valve, which belongs to the technical field of design and manufacture of internal combustion engine equipment. Background technique [0002] Electronically controlled common rail system is a fuel system applied to self-ignition internal combustion engines. The electronically controlled fuel injector is an important part responsible for atomizing fuel and injecting a certain amount of atomized fuel into the cylinder of the internal combustion engine. With the improvement of emission requirements, internal combustion engines put forward higher requirements on the atomization level of fuel. The atomization level of fuel is closely related to the working pressure of the fuel system, the higher the pressure, the better the atomization level of fuel. Therefore, the current electronically controlled common rail system puts forward a high pressure requirement of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M51/06
Inventor 胡林峰庄福如俞建达王凌云蔡珍辉
Owner CHINA FIRST AUTOMOBILE
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