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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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Example Embodiment

[0047] All the fastening joint surfaces in the present invention must be tightly sealed. Therefore, the present invention adopts the following embodiments:

[0048] The sensor bushing 2 is fastened to the fuel rail body 1, the fuel injector pod 3 is fastened to the fuel rail body 1, and the high-pressure swirl injector 12 is fastened to the fuel injector pod 3 Connection, fastening connection between oil rail end cover 5 and oil rail body 1, fastening connection between oil inlet pipe bushing 4 and oil rail body 1, oil rail end bracket 6 and oil rail intermediate bracket 7 and oil rail body 1 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, the sensor bushing 2, the four injector silo 3, the oil inlet pipe bushing 4, the four brackets and other components, and finally assemble and weld the components according to their respec...

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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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