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Gasoline direct spray oil sprayer

A gasoline direct injection and fuel injector technology, which is applied to machines/engines, fuel injection devices, engine components, etc., can solve problems such as insufficient fuel injectors, and achieve low processing difficulty, simple structure, and accurate fuel injection timing Effect

Active Publication Date: 2011-04-06
NANYUE FUEL INJECTION SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a gasoline direct injection injector suitable for fuel supply of in-cylinder gasoline direct injection engines (GDI) in view of the lack of fuel injectors used in existing external cylinder injection engines

Method used

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the scope of the described embodiments.

[0019] see figure 1 , the gasoline direct injection injector shown in the figure can be directly inserted into the engine cylinder head and extends into the combustion chamber. The gasoline direct injection injector includes a fuel injector assembly, a needle valve part, and a nozzle assembly. The mesh member 120 is provided with an axial oil inlet hole 111 in the oil filter bracket 110, and the outer wall of the oil filter bracket 110 is provided with a stepped surface 112, and the oil filter member 120 is pressed into the oil filter by interference fit. The axial oil inlet hole 111 of the bracket 110 . An O-ring 130 and a back-up ring 140 are also arranged on the oil filter member 120 to facilitate the connection of the gasoline direct injection injector with the oil...

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Abstract

The invention discloses a gasoline direct spray oil sprayer, which is arranged in a combustion chamber directly. The gasoline direct spray oil sprayer comprises an oil sprayer assembly, a needle valve component and an oil nozzle matching part, wherein the oil sprayer assembly comprises an oil filter component and a solenoid valve component; the needle valve component is arranged in the oil nozzle matching part; the solenoid valve component comprises an iron core, an electromagnet, a spring and a spring upper base, wherein the upper part of the iron core is connected with the oil filter component and the lower part of the iron core is connected with the oil nozzle matching part; the electromagnet is inserted from the small end of the oil nozzle matching part and is connected with the oil filter component; an axial inner bore serving as an oil duct is formed in the iron core; the spring upper base and the spring are arranged in the axial inner bore; the upper end of the spring is butted against the spring upper base, and the lower end of the spring is butted against the needle valve component; and an adjusting cushion block for adjusting the stroke of the needle valve component is arranged between the oil nozzle matching part and the iron core. The gasoline direct spray oil sprayer has good atomizing performance, simple structure, and low machining difficulty, can accurately control the oil spray amount, and is convenient to assembly.

Description

technical field [0001] The invention relates to the technical field of a fuel injection system for a gasoline engine, and is particularly suitable for a gasoline direct injection injector for fuel supply of an in-cylinder gasoline direct injection engine (GDI). Background technique [0002] At present, Audi, Mercedes-Benz, Ford, Volkswagen, Nissan, Mazda, Mitsubishi, Toyota, Honda, Renault and many other foreign companies and research institutions have developed in-cylinder gasoline direct injection (GDI) products and prototypes. According to data, some GDI For the engine, compared with the traditional port injection (PFI), the mixed gas does not need to pass through the throttle valve, so the air resistance caused by the throttle valve to the mixed gas can be reduced, the fuel economy can be increased by about 15%, and the power output can also be increased 10% or so. [0003] Gasoline direct injection machines have been used on a certain scale in Europe and Japan, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M51/06
Inventor 龙美彪李成校涂选举周文华黄民备欧阳玲湘
Owner NANYUE FUEL INJECTION SYST CO LTD
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