Diesel injector suitable for various fuels

A technology of fuel injector and diesel engine, which is applied in the direction of fuel injection device, machine/engine, charging system, etc., to achieve the effect of reducing processing cost, compact structure and simplifying processing technology

Inactive Publication Date: 2011-03-16
CHANGZHOU YITONG FUEL EJECTOR MFG
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The object of the present invention is to provide a diesel fuel injector suitable for various fuels, which can ideally solve the problem of lubrication between the needle valve body and the needle valve in the fuel injector coupler, and prevent the gap between the needle valve body and the needle valve. The phenomenon of seizure due to lack of lubrication can also be used in common with the existing P-type injectors of the same type

Method used

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  • Diesel injector suitable for various fuels
  • Diesel injector suitable for various fuels
  • Diesel injector suitable for various fuels

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Embodiment 1

[0020] Embodiment 1: the diesel fuel injector applicable to multiple fuels, such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 As shown, it consists of fuel injector coupler 1, coupler fixing nut 2, transition plate 3, needle valve top seat 4, spring 5, pressure adjustment plate 6, fuel injector body 7, high-pressure oil pipe part 8 and oil return pipe 9 Composition: fuel liquid inlet 71, filter element hole 72, fuel upper passage 73, upper lubricating oil passage 74, oil inlet pipe seat hole 75, oil return pipe seat hole 76, spring hole 77 and oil return hole are arranged on the injector body 7 78, the fuel liquid inlet 71, the filter element hole 72 and the fuel upper passage 73 are connected, the upper lubricating oil passage 74 is connected with the oil inlet pipe seat hole 75, and the high pressure oil pipe part 8 is fixedly installed in the oil inlet pipe seat hole 75; the oil return pipe The seat hole 76 communicates with the oil return hole 78, and t...

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Abstract

The invention relates to a diesel injector suitable for various fuels. The diesel injector comprises an injector couple, a couple fixing nut, a transition plate, a needle valve top seat, a spring, a pressure adjustment plate and an injector body, wherein the injector body, the transition plate and the needle valve body are provided with liquid fuel channels and lubricating oil channels; the lubricating oil channels are used to provide lubricating oil for the needle valve and the guide fitting surface of the needle valve body; by arranging the transition plate, the processing difficulties of the fuel channels and the lubricating oil channels are improved and the integral structure becomes more compact; as an oil-storing groove is arranged on the guide section of the needle valve, the axial length of the oil-storing groove between the needle valve and the needle valve body is increased, the lubrication effect of the two parts is optimized, the processing technology of forced lubrication is simplified and the processing cost is reduced; the oil-storing groove is suitable for the injection of organic fuels such as dimethyl ether, methanol and ethanol; the blocking phenomenon between the needle valve and the needle valve body can not be caused by the lack of lubricating oil; and the diesel injector has the same appearance and mounting dimension of the existing P-type injector, thus the diesel injector is more beneficial for popularization.

Description

Technical field: [0001] The invention relates to a fuel injector for a diesel engine, in particular to a fuel injector for a diesel engine suitable for various fuels such as dimethyl ether, methanol and ethanol. Background technique: [0002] The fuel injector is the most critical component in the combustion system of a diesel engine. It directly affects the emission index of the diesel engine. With the improvement of environmental requirements, the emission index of the diesel engine continues to increase. Now diesel engines are required to meet the emission requirements of Euro II and Euro III. At the same time, due to the continuous expansion of the application range of diesel engines, the social ownership of diesel engines is increasing, and the consumption of diesel is increasing year by year. Due to the limited oil resources in the world, countries all over the world are looking for alternative fuels for diesel. The dimethyl ether produced is recognized as a clean fuel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M61/10F02M61/16
Inventor 黄达保高留金
Owner CHANGZHOU YITONG FUEL EJECTOR MFG
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