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Fuel rail assembly of gasoline engine

A gasoline engine oil and assembly technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as high consistency requirements, injector clogging risk, etc., to achieve improved atomization effect, enhanced turbulence intensity, The effect of increased jet speed

Inactive Publication Date: 2017-04-26
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] If you blindly increase the number of holes and pursue the expected value of SMD, the risk of injector clogging may be greatly increased; at the same time, the processing technology of the orifice plate requires extremely high consistency.

Method used

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  • Fuel rail assembly of gasoline engine
  • Fuel rail assembly of gasoline engine
  • Fuel rail assembly of gasoline engine

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Embodiment Construction

[0027] The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0028] Such as figure 1 , figure 2 The structure of the present invention shown is a gasoline engine oil rail assembly, including an oil inlet 4, an oil passage 12, and an oil passage 13.

[0029] According to the dynamic crushing theory, when the cylindrical jet is ejected from the nozzle hole at high speed, under the combined action of fluid dynamics and ambient gas dynamics, the primary atomization is carried out first, and the continuous liquid column is split into liquid sheets and large droplets, and then the secondary atomization is carried out. Level atomization, gradually broken into a large number of fine droplets. Dur...

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Abstract

The invention discloses a fuel rail assembly of a gasoline engine. The fuel rail assembly comprises an oil inlet (4) and an oil channel. Two heaters are arranged in an oil track (5) and extend into an inner cavity of the oil track (5) from the two ends of the oil track (5). The portions, extending into the inner cavity of the oil track (5), of the heaters are each provided with a heater heating body. The heater heating bodies are located at the oil channel. By the adoption of the technical scheme, gasoline is heated before entering an air channel, the kinematic viscosity of gasoline is reduced due to the temperature increase of the gasoline, flowing resistance is reduced, the Reynolds number is increased, accordingly, the fuel turbulence intensity is improved, and pockets of oil are crushed advantageously; and meanwhile, due to continuous rise of the gasoline temperature, the gasoline expands in size, expansion is stacked with pressure spread by an oil pump for oil pumping, the jet pressure is improved indirectly, the jet speed can be increased advantageously, and the atomization effect is improved.

Description

technical field [0001] The invention belongs to the technical field of engine fuel supply system. More specifically, the present invention relates to a gasoline engine oil rail assembly. Background technique [0002] With the increasingly stringent emission regulations, reducing the generation of HC during the cold start phase has received more and more attention. [0003] The contribution that the fuel rail injector assembly can make to cold start optimization mainly includes the precise design of the injection fuel beam and the continuous improvement of the fuel atomization quality. [0004] At present, the in-cylinder direct injection fuel system researched and developed by major domestic OEMs can effectively improve the injection accuracy and fuel atomization effect, but the cost is extremely high and the development cycle is long; the airway injection technology is also continuously optimized and improved. The geometric structure of the fuel injector is used to improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M55/02F02M31/125
CPCF02M55/025F02M31/125
Inventor 花辰凡俞京
Owner CHERY AUTOMOBILE CO LTD
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