Nozzle for lpi injector

A technology of injectors and nozzles, applied in the direction of fuel injection devices, machines/engines, mechanical equipment, etc., to prevent the engine from starting

Active Publication Date: 2010-06-23
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the related art, the LPI injector having the above-mentioned structure has a problem that when high-pressure fuel is repeatedly injected through the fuel injection hole 1a of the injector 1, the Teflon tube 7 of the nozzle 4 increases with the number of times. increase and gradually move down, and the upper end of the Teflon tube 7 does not keep in contact with the lower end of the injector 1, and is separated from the lower end, thereby forming a gap C1

Method used

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  • Nozzle for lpi injector
  • Nozzle for lpi injector
  • Nozzle for lpi injector

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Embodiment Construction

[0022] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it will be understood that that description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalent constructions and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

[0023] according to figure 2 In the shown LPI injector, the injector 1 is inserted into the casing 2 and fixed by the protective cover 3 , and the nozzle 4 is covered in the lower part of the casing 2 by the engine fixing part 5 .

[0024] The nozzle 4 comprises: a Teflon tube 7 made of plastic material and having a hole 6 connected to ...

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Abstract

The invention relates to a nozzle for an LPI injector, wherein, even the injecting pressure of a fuel injected by a fuel injecting hole of the injector is continuously applied on the upper end of a Teflon pipe, because the elastic force of a spring member is greater than the injecting pressure of the fuel at the upper end of the Teflon pipe, the spring member powerfully supports the lower end of the Teflon pipe, thereby the upper end of the Teflon pipe continuously contacts with the lower end of the injector, and no gap is formed between the lower end of the injector and the upper end of the Teflon pipe. Therefore, the hole is prevented from being blocked by the tar adhered in the hole and located at the upper end of the Teflon pipe. In addition, the poor engine starting, vehicle shake and the stop of the engine in the running process can be prevented.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2008-0121953 filed on December 3, 2008, the entire contents of which are hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to a nozzle for an LPI injector, which prevents an injection hole of the injector from being blocked by tar deposits by removing a gap between a lower end of the injector and an upper end of a Teflon tube. Background technique [0004] Generally, an LPI (LPI, LPG Injection) injector is installed in a fuel system of an LPG vehicle, and injects liquid fuel pressurized by a fuel pump. [0005] according to figure 1 In the shown LPI injector, the injector 1 is inserted into the casing 2 and fixed by the protective cover 3 , and the nozzle 4 is covered in the lower part of the casing 2 by the engine fixing part 5 . [0006] The nozzle 4 comprises: a Teflon tube 7 made of plast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M21/02
CPCY02T10/32Y02T10/30F02M21/0248F02M61/168F02M61/18
Inventor 李志雄
Owner HYUNDAI MOTOR CO LTD
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