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Oil-return-free common-rail oil sprayer

A common rail fuel injector and fuel injector technology, which is applied in the directions of machines/engines, fuel injection devices, engine components, etc., can solve the problem of high maintenance cost of valve components, achieve simple structure, save user costs, and reduce failure rates. Effect

Active Publication Date: 2018-04-13
龙口龙泵柴油喷射高科有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the injector assembly and the valve assembly are vulnerable parts, especially the maintenance cost of the valve assembly is relatively high

Method used

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  • Oil-return-free common-rail oil sprayer
  • Oil-return-free common-rail oil sprayer

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In order to better understand the present invention, the implementation manner of the present invention will be explained in detail below in conjunction with the accompanying drawings.

[0021] combine figure 1 , figure 2 , the present invention relates to a common rail fuel injector without valve assembly and oil return, comprising a solenoid valve component 1, a fuel injector body 6, a solenoid valve tight cap 2, a control valve coupler 3, a tight seat 4, a flow control Plate 5, pressure regulating gasket 7, pressure regulating spring 8, spring seat 9, middle block 10, fuel injector coupler 12, tight cap 11. The solenoid valve part 1 is set on the upper end of the injector body 6, and is fastened to the injector body 6 through the solenoid valve tight cap 2; The upper groove, the pressure regulating gasket 7, the pressure regulating spring 8 and the spring seat 9 are set in the lower groove of the lower end of the injector body 6, the upper end surface of the middl...

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PUM

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Abstract

The invention discloses an oil-return-free common-rail oil sprayer. The oil-return-free common-rail oil sprayer comprises an electromagnetic valve component, an oil sprayer body, an electromagnetic valve locking nut, a control valve matching part, a locking seat, a flow control mechanism, a pressure adjusting gasket, a pressure adjusting spring, a spring seat, a middle block, an oil spray nozzle matching part and a locking nut. The electromagnetic valve component is arranged at the upper end of the oil sprayer body, the control valve matching part, the locking seat and the flow control mechanism are arranged on an upper groove of the oil sprayer body, and the pressure adjusting gasket, the pressure adjusting spring and the spring seat are arranged in a lower groove of the oil sprayer body.The upper end face of the middle block is matched with the lower end face of the oil sprayer body, the lower end face of the middle block is matched with the oil spray nozzle matching part, and the lower portion of the locking seat is matched with the upper portion of the flow control mechanism. The lower portion of the flow control mechanism is matched with the bottom wall of the upper groove ofthe oil sprayer body, and the locking seat is connected with the oil sprayer body. A first inner open hole is formed in the position, between one side of the bottom wall of the upper groove and the lower end face of the oil sprayer body, of the oil sprayer body, and a second inner open hole is formed in the other side, close to the bottom wall, of the oil sprayer body and communicates with a lower oil channel of the locking seat.

Description

technical field [0001] The invention relates to the technical field of fuel injection equipment for diesel engines, in particular to a common rail fuel injector without oil return. Background technique [0002] As emission regulations become more and more stringent, engine fuel injection systems are gradually transitioning to electronically controlled high-pressure common rail systems. The core of common rail products is to realize fully electronically controlled high-pressure injection through common rail injectors. The fuel injector is mainly composed of control valve assembly, valve assembly and fuel injection nozzle assembly and solenoid valve components. The four major components limit the reduction of the length of the injector and also limit the application of the common rail injector. range, so that the existing common rail injectors cannot be arranged on small-power and small-size engines, and changing the structure of the existing common rail injectors is a feasibl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M61/02F02M61/16F02M51/06
CPCF02M51/061F02M61/02F02M61/16
Inventor 房征先栾德杰李贯赵华来郭文华马恺于海
Owner 龙口龙泵柴油喷射高科有限公司
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