Proportional electromagnetic valve for electrically controlled high-pressure common-rail fuel injection system of diesel engine

A technology for diesel engines and proportional solenoid valves, applied in engine components, machines/engines, charging systems, etc., can solve problems such as high prices of imported products, achieve simple and practical structure, reduce iron core quality, and be easy to process and manufacture Effect

Inactive Publication Date: 2012-06-20
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For other reasons, the proportional solenoid valve for diesel engine high-pressure common rail fuel injection system currently has no domestic products, mainly relying on imports, but the price of imported products is high, and localization is urgently needed to reduce costs

Method used

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  • Proportional electromagnetic valve for electrically controlled high-pressure common-rail fuel injection system of diesel engine
  • Proportional electromagnetic valve for electrically controlled high-pressure common-rail fuel injection system of diesel engine

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] In the embodiment shown in the accompanying drawings, the cylindrical fixed iron core 8 and the moving iron core 3 are designed to be conical polar surfaces as shown in the figure, and then connected with other parts, including the adjusting screw 9, the guide tube 18, the limiter The position ring 16, the coil spring 15, the gasket 20, the electromagnetic coil assembly 4, the casing 14, the square iron core 19, and the valve body 1 are assembled together to form a proportional solenoid valve.

[0035] In the present invention, the cylindrical fixed iron core and the cylindrical moving iron core are attracted by a special conical pole surface. The two form a special magnetic circuit structure with the shell and the square iron core. When the driving current is input to the electromagnetic coil, The magnetic field in the valve p...

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Abstract

The invention discloses a proportional electromagnetic valve for an electrically controlled high-pressure common-rail fuel injection system of a diesel engine and relates to an electromagnetic valve. A position at which a fixed iron core (8) and a movable iron core (3) of the electromagnetic valve attract each other is a conical polar plane. The fixed iron core (8), the movable iron core (3), a guide pipe (18), a spiral spring (15), an electromagnetic coil (4), a square iron core (19), a shell (14) and a valve body (1) jointly form the electromagnetic valve in an assembling way. When driving current is input into the electromagnetic coil, a magnetic field is generated through a magnetic path in the valve, electromagnetic force with magnitude which is in proportion with the magnitude of the driving current and is not related to a stroke is generated relative to the movable iron core, the movable iron core is enabled to overcome spring force to move, the movable iron core stops moving at a balance point of the two kinds of force and therefore is kept at a stable position, and the movable iron core can proportionally and continuously move according to the magnitude of the driving current to control the opening of the valve. Under complex working conditions under which the diesel engine works, the electromagnetic valve not only can stably control the on/off of a fuel path, but also can accurately and proportionally control the flow of the fuel path according to the driving current.

Description

technical field [0001] The invention relates to a proportional solenoid valve, in particular to a proportional solenoid valve for an electronically controlled high-pressure common rail fuel injection system of a diesel engine. Background technique [0002] The electronically controlled high-pressure common rail fuel injection system for diesel engines is a new concept fuel injection system. This system can not only significantly improve efficiency and reduce fuel consumption, but also greatly reduce the pollution of diesel engines. It is of great significance to energy saving and environmental protection. It is a diesel engine fuel system. direction of development. [0003] The solenoid valve for oil flow control in the high-pressure common rail fuel injection system is a key component of the system. According to the system requirements, the solenoid valve must have a proportional control function, that is, it can control the fuel supply proportionally according to the conti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/06F16K27/02F02M51/06
Inventor 蔡胜年徐承韬秦然梁禹庞宝麟王永斌
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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