Diesel fuel and natural gas double-fuel integrated injector

A technology of natural gas and injectors, which is applied in fuel injection devices, charging systems, machines/engines, etc. It can solve problems such as complex structures and unsmooth fuel switching, and achieve the effects of simple structure, reduced fuel consumption, and convenient installation

Active Publication Date: 2015-11-04
无锡市长庆化工防腐设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of complex structure and unsmooth switching between fuels of existing dual-fuel injectors, an embodiment of the present invention provides a diesel and natural gas dual-fuel integrated injector

Method used

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  • Diesel fuel and natural gas double-fuel integrated injector
  • Diesel fuel and natural gas double-fuel integrated injector
  • Diesel fuel and natural gas double-fuel integrated injector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment one: if figure 1 As shown, a diesel and natural gas dual-fuel integrated injector includes an injector body, and the injector body is provided with:

[0023] The diesel fuel inlet 11 is used to connect with the high-pressure oil pipe;

[0024] The natural gas fuel inlet 12 is used to connect with the natural gas fuel supply pipeline;

[0025] Fuel injection port 2;

[0026] The first passage communicates with the diesel fuel inlet 11 and the fuel injection port 2, and the first passage is provided with a first valve chamber 30, a first pressure chamber 31, and a second pressure chamber 32 which communicate with each other sequentially from top to bottom; The diesel fuel inlet 11 communicates with the first pressure chamber 31 and the second pressure chamber 32; the second pressure chamber 32 communicates with the fuel injection port 2;

[0027] The second passage communicates with the natural gas fuel inlet 12 and the fuel injection port 2, and a second va...

Embodiment 2

[0050] Embodiment 2: The difference from Embodiment 1 is that the natural gas fuel inlet 12 is provided with a quick connector conveniently connected to the natural gas fuel supply pipeline. The connection part 122, the locking fitting part 123 provided with threads on the outer circumference below the tapered insertion part 122, and a nut 124 which is arranged on the natural gas fuel supply pipeline and can cooperate with the locking fitting part 123, wherein, the An annular groove 125 is provided between the tapered insertion portion 122 and the locking fitting portion 123 .

Embodiment 3

[0051] Embodiment 3: The difference from Embodiment 1 is that the natural gas fuel inlet 12 is provided with a ferrule type joint conveniently connected with the natural gas fuel supply pipeline, and the ferrule type joint includes a locking threaded outer circumference. The fitting part 126, the nut 127 that is arranged on the natural gas fuel supply pipeline and can cooperate with the locking fitting part 126, and the through hole that is arranged between the locking fitting part 126 and the nut 127 and has a cone that gradually becomes smaller Shaped piece 128 and annular gasket 129.

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Abstract

The embodiment of the invention discloses a diesel fuel and natural gas double-fuel integrated injector. The diesel fuel and natural gas double-fuel integrated injector comprises an injector main body. The injector main body is provided with a diesel fuel inlet, a natural gas fuel inlet, a fuel injection opening, a first channel, a second channel, an oil return opening, an oil return control valve, a diesel oil fuel injection control needle valve for controlling communication and cut-off between a second pressure chamber and the fuel injection opening according to mutual effects among the second pressure chamber, a first elastic component and a first pressure chamber, and a natural gas fuel injection control valve for controlling communication or cut-off between a second valve cavity and the fuel injection opening. According to the embodiment of the invention, the diesel fuel and natural gas double-fuel integrated injector is simple in structure and convenient to install, can realize injection control of a diesel fuel through cooperation between the oil return control valve and the diesel oil fuel injection control needle valve, or realizes injection control of a natural gas fuel through the natural gas fuel injection control valve. Besides, different fuels can be smoothly switched.

Description

Technical field: [0001] The invention relates to a dual-fuel electronically controlled injector, in particular to a diesel and natural gas dual-fuel integrated injector. Background technique: [0002] With the focus on vehicle economy and alternative fuel economy and environmental protection, automakers and refitting markets turn to more economical and environmentally friendly vehicles in order to improve efficiency and energy conservation and environmental protection, so the effective use of alternative fuels or dual-purpose fuels or multiple fuels use, requires a unique configuration of traditionally fueled engine components. [0003] In order to adapt to the mixed use of multiple fuels or the selective switching of use, dual-fuel or multi-fuel economical and environmentally friendly vehicles that are refitted or produced are generally based on the original vehicle, and the intake manifold is refitted with new fuel connected to the intake manifold. The injector, the origi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M43/04F02M51/06
Inventor 胡松平孙霞林
Owner 无锡市长庆化工防腐设备有限公司
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