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Liquid phase injection tip icing prevention

A fuel injector, liquefied gas technology, applied in fuel injection devices, charging systems, combustion engines, etc., can solve problems such as increasing ice formation

Active Publication Date: 2015-04-01
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the likelihood of ice formation along the length of the injector assembly is increased

Method used

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  • Liquid phase injection tip icing prevention
  • Liquid phase injection tip icing prevention
  • Liquid phase injection tip icing prevention

Examples

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Embodiment Construction

[0012] Example fuel injector assemblies and systems are provided herein. An example fuel injector assembly may include an insulated transfer conduit in fluid communication with a fuel tank, a conductive housing at least partially surrounding the transfer conduit, and a seal disposed between the transfer conduit and the conductive housing Thereby exerting axial and radial forces on the outer surface of the delivery conduit and the inner surface of the conductive housing and on the outlet of the fuel injector body. The seal reduces expansion volume in the fuel injector assembly, thereby reducing temperature loss of fuel traveling through the injector assembly. Especially in fuel injectors injecting liquefied gas, such as liquefied petroleum gas (LPG), temperature losses can be problematic due to the large pressure drop across the fuel injector due to the pressurization of the liquefied gas. Thus, the seals and insulated delivery piping work together to reduce the likelihood of ...

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Abstract

A fuel injector assembly is provided herein. The fuel injector assembly includes an insulated delivery conduit in fluidic communication with a fuel pump and a conductive enclosure at least partially surrounding the insulated delivery conduit. The fuel injector assembly further includes a seal positioned between the insulated delivery conduit, conductive enclosure, and the fuel injector outlet with radial and axial forces against an exterior surface of the insulated delivery conduit, interior surface of the conductive enclosure, and the exterior surface of fuel injector outlet.

Description

Background technique [0001] Fuel injectors may be positioned in the intake manifold of the engine to provide port fuel injection. However, port fuel injectors experience low temperatures due to the expansion of fuel in the fuel injector assembly and the low temperature intake air flowing through the intake manifold. Specifically, engines with fuel injectors configured to inject liquefied gas, such as liquefied petroleum gas (LPG), experience large temperatures within the fuel injector assembly due to the rapid depressurization of the liquefied gas in the fuel injector assembly reduce. As a result, ice particles may form on the tips of the fuel injector assemblies during some operating conditions. Specifically, moisture in the incoming intake air can condense and freeze on the tips of the injector assemblies. Additionally, some components of the fuel may freeze on the tip of the injector assembly. For example, butane in LPG will remain in a liquid state after injection due ...

Claims

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Application Information

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IPC IPC(8): F02M61/00F02M61/16F02M63/00
CPCF02M21/0212F02M21/026F02M21/0278F02M21/0281F02M21/0287F02M21/0296F02M61/145Y02T10/30F02M61/16F02M63/00
Inventor S·R·赖安B·J·巴特尔
Owner FORD GLOBAL TECH LLC