Fuel injection unit for internal combustion engine

Patent metadata

Field	Value
Publication number	US-2017306902-A1
Application number	US-201615362348-A
Country	US
Kind code	A1
Filing date	Nov 28, 2016
Priority date	Apr 20, 2016
Publication date	Oct 26, 2017
Grant date	—

Abstract

The present disclosure provides a fuel injection unit for an internal combustion engine. The fuel injection unit includes: a separator that is disposed in an intake port to supplie air into a combustion chamber formed in an engine head, and that divides a channel for air into an upper channel and a lower channel; a blade disposed ahead of the separator and opening or closing the upper channel or the lower channel by rotating; and a first injector disposed over the intake port. In particular, when the first injector injects fuel, the blade does not interfere with the fuel.

First claim

What is claimed is:

1 . A fuel injection unit for an internal combustion engine, the fuel injection unit comprising:
a separator disposed in an intake port configured to supply air into a combustion chamber formed in an engine head, the separator configured to divide a channel for air into an upper channel and a lower channel; a blade disposed ahead of the separator, and configured to open or close the upper channel or the lower channel by rotating; and a first injector disposed over the intake port, wherein when the first injector injects fuel, the blade does not interfere with the fuel.

2 . The fuel injection unit of claim 1 , wherein a rear end of the separator is positioned behind an end of the first injector.

3 . The fuel injection unit of claim 1 , wherein the separator and the blade is formed in a single module.

4 . The fuel injection unit of claim 1 , wherein the first injector is disposed in the engine head.

5 . The fuel injection unit of claim 1 , wherein a valve angle of the engine head is a predetermined value or less such that the first injector is disposed in the intake port.

6 . The fuel injection unit of claim 1 , wherein a second injector configured to inject fuel directly into the combustion chamber is disposed under the intake port.

7 . The fuel injection unit of claim 1 , wherein an avoiding groove is formed at an end of the separator to avoid interference with the first injector when fuel is injected.

8 . The fuel injection unit of claim 1 , wherein the first injector is in a form of a combined multiple injectors that have smaller capacity than a capacity of the first injector in a form of a single injector.

9 . The fuel injection unit of claim 8 , wherein a plurality of avoiding grooves are formed at an end of the separator to avoid interference with the combined multiple first injectors when fuel is injected.

10 . The fuel injection unit of claim 1 , wherein the blade is configured to rotate about a rotary shaft and the rotary shaft is connected to a driving unit and rotated by the driving unit.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Chu Dong Ho

Classifications

• F02M35/10216

  Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators · CPC title

• F02M35/10177

  Engines having multiple fuel injectors or carburettors per cylinder · CPC title

• F02M35/10281

  Means to remove, re-atomise or redistribute condensed fuel; Means to avoid fuel particles from separating from the mixture (apparatus for re-atomising condensed fuel or homogenising fuel-air mixture F02M29/00; other apparatus for treating combustion-air, fuel or fuel-air mixture F02M33/00) · CPC title

• F02M61/145

  the injection nozzle opening into the air intake conduit · CPC title

• F02M35/10262 Primary

  Flow guides, obstructions, deflectors or the like (for generating a charge motion in the cylinder F02B31/00; for re-atomising condensed fuel or homogenising fuel-air mixture F02M29/00) · CPC title