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Gasoline engine high pressure oil rail

A gasoline engine and oil rail technology, applied in mechanical equipment, engine components, machines/engines, etc., to improve performance and efficiency, simple and reliable structure, and promote full combustion

Active Publication Date: 2008-10-01
CHERY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, there is no mature technology that can solve this problem

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  • Gasoline engine high pressure oil rail
  • Gasoline engine high pressure oil rail
  • Gasoline engine high pressure oil rail

Examples

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Embodiment approach

[0048] The fastened connection between the sensor bushing 2 and the fuel rail body 1, the fastened connection between the fuel injector hanger 3 and the fuel rail body 1, and the fastening of the high-pressure swirl injector 12 and the fuel injector hanger 3 connection, the fastening connection between the oil rail end cover 5 and the oil rail body 1, the fastening connection between the oil inlet pipe bushing 4 and the oil rail body 1, the support 6 at both ends of the oil rail and the middle support 7 of the oil rail and the oil rail body 1 The fastening connections are all welded connections. The welding method is brazing.

[0049] Determine the size of each key component according to the design requirements, and then process the oil rail body 1, sensor bushing 2, four injector hangers 3, oil inlet pipe bushing 4, four brackets and other components, and finally assemble and weld them according to their respective positions .

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Abstract

The invention discloses a high pressure gasoline rail of a gasoline engine, comprising a long cylindrical gasoline rail body (1), a gasoline inlet pipe (9) and a high pressure swirl injector (12) connected with the cylinder of the gasoline engine, the gasoline rail body (1) is equipped with a gasoline pressure sensor (11) communicated with the gasoline rail body (1), the high pressure gasoline rail is equipped with a sensor sleeve (2), the gasoline pressure sensor (11) is fixedly connected with the gasoline rail body (1) by the sensor sleeve (2). By using the technical scheme, the invention greatly increases the injection pressure of gasoline, facilities the complete combustion of the gasoline, and improves the engine performance and efficiency. The high pressure gasoline rail has good sealing property, high safety, simple and reliable structure, adapts to high gasoline pressure, and is suitable for gasoline direct injection engines.

Description

technical field [0001] The invention belongs to the technical field of automobile engines, and relates to a fuel injection structure of an automobile engine. More specifically, the invention particularly relates to a high-pressure oil rail of a gasoline engine adopting in-cylinder direct injection. Background technique [0002] Since the gasoline engine fuel supply system has been developed from carburetor to electronically controlled fuel injection, it is intake port injection at first, and the fuel injection pressure in the fuel rail is usually below 10bar. With the development of engine technology, there has been an EFI gasoline engine with in-cylinder fuel direct injection (Gasoline Direct Injection, GDI technology), and the fuel pressure in the fuel rail is as high as 100bar or more. The oil rail of ordinary EFI gasoline is generally a stainless steel pipe, on which the oil inlet pipe and the fuel injector hanger are welded. This type of oil rail bears low pressure, an...

Claims

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Application Information

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IPC IPC(8): F02M47/02
Inventor 张志福
Owner CHERY AUTOMOBILE CO LTD
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